CN117488538A - A pretreatment method for nylon 6DTY raw materials with good air permeability - Google Patents

A pretreatment method for nylon 6DTY raw materials with good air permeability Download PDF

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Publication number
CN117488538A
CN117488538A CN202311458223.8A CN202311458223A CN117488538A CN 117488538 A CN117488538 A CN 117488538A CN 202311458223 A CN202311458223 A CN 202311458223A CN 117488538 A CN117488538 A CN 117488538A
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CN
China
Prior art keywords
raw material
6dty
nylon
nylon 6dty
minutes
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CN202311458223.8A
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Inventor
吕晶晶
田青
王蓉
刘志宏
邓勇军
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Nantong Jinyu Spinning Plastic Co ltd
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Nantong Jinyu Spinning Plastic Co ltd
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Priority to CN202311458223.8A priority Critical patent/CN117488538A/en
Publication of CN117488538A publication Critical patent/CN117488538A/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
    • D06L1/00—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods
    • D06L1/12—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods using aqueous solvents
    • D06L1/16—Multi-step processes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
    • D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
    • D06L4/20—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen
    • D06L4/22—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen using inorganic agents
    • D06L4/23—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen using inorganic agents using hypohalogenites
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
    • D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
    • D06L4/70—Multi-step processes
    • D06L4/75—Multi-step processes combined with cleaning or washing

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

The invention discloses a pretreatment method of a nylon 6DTY raw material with good air permeability, which relates to the technical field of pretreatment methods of nylon 6DTY raw material, and comprises the following steps: soaking, cleaning, acid washing, alkali washing, bleaching, softening treatment, heat setting and drying, the invention submerges the soaked nylon 6DTY raw material in 9 liters of warm water at 35 ℃, then adds 130 grams of laundry detergent, fully soaks the nylon 6DTY raw material for 10 minutes, then lightly stirs the nylon 6DTY raw material clockwise for 5 minutes and lightly stirs the nylon 6DTY raw material anticlockwise for 5 minutes by a pounding rod, finally drags the nylon 6DTY raw material out of the warm water, fully washes the nylon 6DTY raw material by using a water gun, so that grease and insoluble impurities attached to the surface of the nylon 6DTY raw material are cleaned, meanwhile, the bleaching step further removes substances remained by acid washing and alkali washing, and the pore space of the nylon 6DTY raw material is increased by using a physical method in the heat setting treatment, thereby improving the air permeability of the nylon 6DTY raw material.

Description

Pretreatment method of nylon 6DTY raw material with good air permeability
Technical Field
The invention relates to the technical field of pretreatment methods of nylon 6DTY raw materials, in particular to a pretreatment method of nylon 6DTY raw materials with good air permeability.
Background
The pretreatment method of the nylon 6DTY raw material is a method for cleaning and treating the nylon 6DTY raw material before the nylon 6DTY raw material is put into production and used, the nylon 6DTY raw material DTY is a polyester fiber, the nylon 6DTY raw material DTY is prepared from terephthalic acid, hexanediol and other raw materials through polymerization reaction, the pretreatment method of the nylon 6DTY raw material ensures that the surface of the nylon 6DTY raw material is free of dirt and grease, the whole is clean and tidy, and the purity of the raw material is ensured, so that the effect and the product quality of subsequent processing are improved, and good conditions are provided for subsequent processing and production.
The existing pretreatment method of the chinlon 6DTY raw material has the defects that:
1. in JP7042664B2, a fiber pretreatment method is disclosed, and the above publication does not consider the problem of removing grease from the surface of the fiber by two steps of soaking and washing, reducing the air permeability of the fiber;
2. in EP0685589A3, a natural fiber pretreatment method is disclosed, and the above publication does not consider the problem that the fiber improves the wettability of the fiber by acid washing, reducing the hydrophilicity of the fiber;
3. in JP1993125661a, a pretreatment method of a fibrous material is disclosed, and the above publication does not consider the problem that the fibrous material is not elastic and has low air permeability by heat setting treatment, and the performance of the fibrous material is lowered;
4. in patent document CN102634986a, a method of pretreatment of fibers is disclosed, and the above publication does not consider that alkali washing and softening treatment are performed on the fibers to thereby change the surface smoothness and softness of the fibers, and the softness and fuzzing and pilling resistance of the fibers are reduced.
Disclosure of Invention
The invention aims to provide a pretreatment method of nylon 6DTY raw materials with good air permeability, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: a pretreatment method of nylon 6DTY raw materials with good air permeability comprises the following steps:
(1) Soaking;
(2) Cleaning;
(3) Acid washing;
(4) Alkali washing;
(5) Bleaching;
(6) Softening treatment;
(7) Heat setting;
(8) Drying;
the cleaning is used for further removing grease and insoluble impurities remained on the surface of the nylon 6DTY raw material after soaking, and preventing the grease and insoluble impurities from blocking the pores of the nylon 6DTY raw material, so that the air permeability of the nylon 6DTY raw material is improved.
Preferably, the pretreatment method of the chinlon 6DTY raw material comprises the following steps:
step S1, soaking: the nylon 6DTY raw material is placed in clear water at 60 ℃ for soaking for 40 minutes, so that grease and insoluble impurities attached to the surface of the nylon 6DTY raw material are separated from the nylon 6DTY raw material, and the later cleaning is facilitated;
step S2, cleaning: putting the soaked nylon 6DTY raw material into a washing tank with the length, the width and the depth of 3m and the depth of 2m, adding 9 liters of warm water with the water temperature of 35 ℃ into the washing tank to enable the nylon 6DTY raw material to be completely immersed by the warm water, simultaneously adding 130 grams of laundry detergent, fully soaking the nylon 6DTY raw material and the aqueous solution of the laundry detergent for 10 minutes, slightly stirring the nylon 6DTY raw material clockwise for 5 minutes by using a tamping rod, slightly stirring the nylon 6DTY raw material anticlockwise for 5 minutes, fishing out the nylon 6DTY raw material from the warm water, flushing the nylon 6DTY raw material for 10 minutes by using a high-pressure water gun, and ensuring to remove impurities, grease, dirt and residual laundry detergent on the surface, thereby improving the air permeability of the nylon 6DTY raw material, and finally, centrifugally dehydrating the nylon 6DTY raw material by using a centrifuge to quickly and effectively remove most of water;
preferably, the pretreatment method of the chinlon 6DTY raw material comprises the following steps:
step S3, acid cleaning: placing the dehydrated nylon 6DTY raw material into a pickling tank, uniformly stirring the nylon 6DTY raw material and a 2% dilute sulfuric acid solution, keeping the temperature at 20 ℃, controlling the pickling time at 10 minutes, and pickling to increase the carboxyl content on the surface of the nylon 6DTY raw material, so that the hydrophilicity of the nylon 6DTY raw material fiber is enhanced, the wettability of the nylon 6DTY raw material fiber is improved, and then fully flushing the dilute sulfuric acid in the pickled nylon 6DTY raw material by a high-pressure water gun.
Preferably, the pretreatment method of the chinlon 6DTY raw material further comprises the following steps:
step S4, alkali washing: the nylon 6DTY raw material which is completely washed after pickling is placed into an alkaline washing tank, so that the nylon 6DTY raw material and a 2% sodium hydroxide solution are uniformly stirred, the temperature is kept at 40 ℃, the alkaline washing time is controlled to be 15 minutes, the residues of acidic substances are completely neutralized, and finally the nylon 6DTY raw material is fished out of the alkaline washing tank, so that the smoothness of the fiber surface is improved, friction among fibers can be reduced, the risk of fuzzing and pilling is reduced, and then the nylon 6DTY raw material is sufficiently washed again for 20 minutes by a high-pressure water gun, so that the sodium hydroxide solution is washed cleanly.
Preferably, the pretreatment method of the chinlon 6DTY raw material further comprises the following steps:
step S5, bleaching: the nylon 6DTY raw material after alkaline washing is put into a bleaching tank, and sodium hypochlorite bleaching agent with the concentration of 3% is required to be added, wherein the mass formula is as follows:
M＝m×C
wherein M is the mass of sodium hypochlorite; m is the mass of the nylon 6DTY raw material; c is sodium hypochlorite concentration
The bleaching agent and the nylon-6 DTY raw material are uniformly stirred, the temperature is kept at 60 ℃, the bleaching time is controlled to be 40 minutes, the bleached nylon-6 DTY raw material is fished out of the bleaching tank, and then the nylon-6 DTY raw material is fully washed by using a high-pressure water gun to remove the bleaching agent residues, so that the bleaching agent is used for removing messy redundant pigment and residual dirt, and simultaneously reducing the adhesion of impurities to the surface of the nylon-6 DTY raw material, and the air permeability of the nylon-6 DTY raw material is further improved.
Preferably, the pretreatment method of the chinlon 6DTY raw material further comprises the following steps:
step S6, softening: placing the bleached nylon 6DTY raw material into a softening treatment tank, adding a softener accounting for 3% of the weight of the nylon 6DTY raw material into the softening treatment tank, uniformly stirring the softener and the nylon 6DTY raw material, keeping the temperature at about 23 ℃, controlling the softening treatment time to be 30 minutes, enabling the softener to soften the nylon 6DTY raw material, improving the softness of the nylon 6DTY raw material, and then fully flushing the nylon 6DTY raw material by using a high-pressure water gun through clear water to remove softener residues.
Preferably, the pretreatment method of the chinlon 6DTY raw material further comprises the following steps:
step S7, heat setting: heating the nylon 6DTY raw material subjected to softening treatment to 200 ℃ for 10 minutes, then placing the heated nylon 6DTY raw material on a biaxial stretching device, applying tension to enable the nylon 6DTY raw material to be simultaneously biaxially stretched in the horizontal and vertical directions, then placing the stretched nylon 6DTY raw material in cold water for cooling to fix the structure of the nylon 6DTY raw material, wherein the cold water temperature is 0 ℃ and the cooling time is 10 minutes, and after cooling is completed, enabling the molecular structure of the nylon 6DTY raw material to be fixed again after stretching adjustment to increase the performance, thereby improving the elasticity and the ductility of the fiber;
step S8, drying: drying the cooled nylon 6DTY raw material to remove residual moisture for later dyeing and sewing.
Preferably, in the step S2, the method further includes the following steps:
the calculation formula of the washing tank in the step S21 is as follows:
V＝LxWxD
wherein,
v represents the volume; l represents a length; w represents width; d represents depth;
the high-pressure water gun with the nozzle of 4.0 is selected, the pressure value of the high-pressure water gun is 4000 pounds per square inch according to the nozzle of 4.0, the flow of the high-pressure water gun is 8 gallons per minute at the moment, the high-pressure water gun is sequentially adjusted by a worker to be 40 degrees, 25 degrees, 15 degrees and 0 degrees respectively, the 0 degrees are suitable for cleaning stubborn stains, the 15 degrees are suitable for cleaning stubborn stains, the 25 degrees are suitable for cleaning the stains easily, the 40 degrees are suitable for cleaning the stains easily with large area, the worker uses the high-pressure water gun to rinse for 3 minutes, 2 minutes and 2 minutes, and the 0 degree is rinsed for 2 minutes, so that the high-pressure water gun can rinse the nylon 6DTY raw materials for 10 minutes in total.
Preferably, in the step S3, the method further includes the following steps:
in the step S31, the volume formula of the dilute sulfuric acid solution is as follows:
volume of dilute sulfuric acid solution = W x 0.02/C
Wherein W represents the weight of the chinlon 6DTY raw material;
c represents the concentration of the dilute sulfuric acid solution;
preferably, in the step S4, the method further includes the following steps:
in step S41, the volume calculation formula of the sodium hydroxide solution is as follows:
V＝m/C
wherein the concentration (C) is 2%, i.e., 0.02; m represents the weight of the chinlon 6DTY raw material.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the soaked nylon 6DTY raw material is immersed in 9 liters of warm water with the water temperature of 35 ℃, 130 g of laundry detergent is added, the nylon 6DTY raw material is fully soaked for 10 minutes, then the laundry detergent is gently stirred clockwise for 5 minutes and then gently stirred anticlockwise for 5 minutes by a tamping rod, finally the nylon 6DTY raw material is fished out of the warm water, and a water gun is used for fully flushing, so that grease and insoluble impurities attached to the surface of the nylon 6DTY raw material are cleaned up, the pores of the nylon 6DTY raw material are prevented from being blocked, meanwhile, the residual substances of pickling and alkaline washing are further removed in the bleaching step, and the pores of the nylon 6DTY raw material are enlarged by using a physical method in a heat setting treatment, so that the air permeability of the nylon 6DTY raw material is improved.
2. According to the invention, firstly, the cleaned nylon 6DTY raw material is put into a pickling tank, then the volume of a dilute sulfuric acid solution with the required concentration of 2% is calculated according to a formula and is added into the pickling tank, so that the nylon 6DTY raw material and the 2% dilute sulfuric acid solution are uniformly stirred, the temperature is kept at 20 ℃, the pickling time is controlled at 10 minutes, and the carboxyl content on the surface of the nylon 6DTY raw material can be increased by pickling, thereby enhancing the hydrophilicity of the nylon 6DTY raw material fiber and improving the wettability of the nylon 6DTY raw material fiber.
3. According to the invention, the acid-washed nylon 6DTY raw material is placed into an alkaline washing tank, the volume of sodium hydroxide solution with the concentration of 2% is calculated according to a formula and is added into the alkaline washing tank, so that the nylon 6DTY raw material and the sodium hydroxide solution with the concentration of 2% are uniformly stirred, the temperature is kept at 40 ℃, the alkaline washing time is controlled to be 15 minutes, the residues of acidic substances are completely neutralized, and finally the nylon 6DTY raw material is fished out of the alkaline washing tank, so that the smoothness of the surface of the fiber is improved, the friction among the fibers can be reduced, and the risk of fuzzing and pilling is reduced.
4. According to the invention, after the alkali-washed nylon 6DTY raw material is bleached, the nylon 6DTY raw material is placed into a softening treatment tank, so that a softening agent and the nylon 6DTY raw material are uniformly stirred, the temperature is kept at about 23 ℃, the softening treatment time is controlled to be 30 minutes, and therefore the softness of the nylon 6DTY raw material is increased, meanwhile, the nylon 6DTY raw material after the softening treatment is heated to 200 ℃ through heat setting treatment, the heating time is 10 minutes, the heated nylon 6DTY raw material is placed on a biaxial stretching device, the nylon 6DTY raw material is simultaneously stretched in the horizontal direction and the vertical direction through applying tension, the structure of the nylon 6DTY raw material is fixed through cooling the heated nylon 6DTY raw material in cold water, the temperature of the cold water is 0 ℃, the cooling time is 10 minutes, and the molecular structure of the nylon 6DTY raw material is further fixed to increase the performance through stretching adjustment after the cooling is completed, so that the elasticity and the ductility of the fiber are improved.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic view of the soaking in the present invention;
FIG. 3 is a schematic view of the cleaning process of the present invention;
FIG. 4 is a schematic diagram of the pickling of the present invention;
FIG. 5 is a schematic view of an alkaline wash of the present invention;
FIG. 6 is a schematic representation of bleaching according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All embodiments obtained by a person of ordinary skill in the art without making any inventive effort based on the embodiments of the present invention are within the scope of the present invention.
Embodiment one:
referring to fig. 1, a pretreatment method of nylon 6DTY raw material with good air permeability comprises the following steps:
(1) Soaking;
(2) Cleaning;
(3) Acid washing;
(4) Alkali washing;
(5) Bleaching;
(6) Softening treatment;
(7) Heat setting;
(8) Drying;
the cleaning is used for further removing grease and insoluble impurities remained on the surface of the nylon 6DTY raw material after soaking, and preventing the grease and insoluble impurities from blocking the pores of the nylon 6DTY raw material, thereby improving the air permeability of the nylon 6DTY raw material;
further, the purpose of the pretreatment includes the following aspects:
removing dirt and grease: the nylon 6DTY raw material may be polluted by dirt and grease in the production and transportation processes, and the pretreatment can effectively remove the impurities, so that the purity of the raw material is ensured;
improving dyeing and printing effects: pretreatment is needed to be carried out on the nylon 6DTY raw material before dyeing and printing so as to remove dirt and grease on the surface and improve the uniformity and color fastness of dyeing and printing;
improving the adhesive performance: the pretreatment can improve the surface adhesion performance of the nylon 6DTY raw material and improve the adhesion effect in the subsequent processing process;
the product quality is improved: through pretreatment, impurities and pollutants on the surface of the nylon 6DTY raw material can be reduced, and the quality and appearance of the product are improved.
Embodiment two:
referring to fig. 1, 2 and 3, a pretreatment method for nylon 6DTY raw material with good air permeability is as follows:
step S1, soaking: the nylon 6DTY raw material is placed in clear water at 60 ℃ for soaking for 40 minutes, so that grease and insoluble impurities attached to the surface of the nylon 6DTY raw material are separated from the nylon 6DTY raw material, and the later cleaning is facilitated;
step S2, cleaning: putting the soaked nylon 6DTY raw material into a washing tank with the length, the width and the depth of 3m and the depth of 2m, adding 9 liters of warm water with the water temperature of 35 ℃ into the washing tank to enable the nylon 6DTY raw material to be completely immersed by the warm water, simultaneously adding 130 grams of laundry detergent, fully soaking the nylon 6DTY raw material and the aqueous solution of the laundry detergent for 10 minutes, slightly stirring the nylon 6DTY raw material clockwise for 5 minutes by using a tamping rod, slightly stirring the nylon 6DTY raw material anticlockwise for 5 minutes, fishing out the nylon 6DTY raw material from the warm water, flushing the nylon 6DTY raw material for 10 minutes by using a high-pressure water gun, and ensuring to remove impurities, grease, dirt and residual laundry detergent on the surface, thereby improving the air permeability of the nylon 6DTY raw material, and finally, centrifugally dehydrating the nylon 6DTY raw material by using a centrifuge to quickly and effectively remove most of water;
the step S2 further comprises the following calculation formula of the washing tank:
V＝LxWxD
wherein,
v represents the volume; l represents a length; w represents width; d represents depth;
selecting a high-pressure water gun with a nozzle of 4.0, adjusting the pressure value of the high-pressure water gun to 4000 pounds per square inch according to the nozzle of 4.0, wherein the flow rate of the high-pressure water gun is 8 gallons per minute, and sequentially adjusting the angles of the high-pressure water gun by a worker to be 40 degrees, 25 degrees, 15 degrees and 0 degrees respectively, wherein the 0 degrees are suitable for cleaning stubborn stains, the 15 degrees are suitable for cleaning stubborn stains, the 25 degrees are suitable for cleaning the stains easily, the 40 degrees are suitable for cleaning the stains easily with larger area, so that the worker can use the high-pressure water gun to rinse for 3 minutes, 2 minutes and 2 minutes with 15 degrees, and the high-pressure water gun can rinse the nylon 6DTY raw material for 10 minutes in total;
further, (1) the selected laundry detergent has the advantages of high water dissolution speed, neutral pH value of 6-8 and milder temperature;
(2) The cleaned nylon 6DTY raw material is placed into a centrifugal machine, the centrifugal machine is rotated at a high speed to separate water by utilizing centrifugal force, at the moment, the dehydration temperature of the centrifugal machine on the nylon 6DTY raw material is controlled to be 60 ℃, the evaporation and removal of water can be effectively accelerated, and the dehydration time is controlled to be 20 minutes, so that most of water can be removed from the nylon 6DTY raw material.
Embodiment III:
referring to fig. 1 and 4, the pretreatment method of the nylon 6DTY raw material with good air permeability further comprises the following steps:
step S3, acid cleaning: placing the dehydrated nylon 6DTY raw material into a pickling tank, uniformly stirring the nylon 6DTY raw material and a 2% dilute sulfuric acid solution, keeping the temperature at 20 ℃, controlling the pickling time at 10 minutes, and enabling the carboxyl content on the surface of the nylon 6DTY raw material to be increased by pickling, so that the hydrophilicity of the nylon 6DTY raw material fiber is enhanced, the wettability of the nylon 6DTY raw material fiber is improved, and then fully flushing the dilute sulfuric acid substance in the pickled nylon 6DTY raw material by a high-pressure water gun;
step S3 further comprises the following formula of the volume of the dilute sulfuric acid solution:
volume of dilute sulfuric acid solution = W x 0.02/C
Wherein W represents the weight of the chinlon 6DTY raw material;
c represents the concentration of the dilute sulfuric acid solution;
further, the hydrophilicity of reinforcing fibers has a variety of uses in production and life, with the following being some of the major applications:
textile products: increasing the hydrophilicity of the fibers in athletic, undergarments, and summer clothing may make the fabric more prone to moisture absorption and perspiration, thereby providing better comfort, and hydrophilic fibers may make the fabric easier to dye because the dye may more easily penetrate into the fibers.
Sanitary articles: in sanitary napkins, diapers, and adult care products, hydrophilic fibers can help to quickly absorb liquids, thereby maintaining dryness and comfort of the skin;
medical supplies: hydrophilic fibers can help absorb wound secretions in wound dressings, thereby promoting wound healing, and in medical gowns and masks, hydrophilic fibers can provide better moisture permeability, increasing comfort;
cleaning articles: hydrophilic fibers can help absorb and retain more moisture in the mop and cleaning cloth, thereby improving cleaning;
and simultaneously, the acid-washed nylon 6DTY raw material is fully washed for 20 minutes by using a high-pressure water gun until sulfuric acid substances in the nylon 6DTY raw material are washed cleanly, the acid washing not only removes impurities and residues on the nylon raw material, but also improves the surface quality of fibers, improves the purity, and avoids the phenomenon that residual dilute sulfuric acid substances are too much and insufficiently neutralized when alkaline washing is carried out in the later period, so that residual acid washing agent and impurities can cause the nylon 6DTY raw material to fuzzing and pilling.
Embodiment four:
referring to fig. 1 and 5, the pretreatment method of the nylon 6DTY raw material with good air permeability further comprises the following steps:
step S4, alkali washing: placing the fully washed nylon 6DTY raw material after pickling into an alkaline washing tank, uniformly stirring the nylon 6DTY raw material and a 2% sodium hydroxide solution, keeping the temperature at 40 ℃, controlling the alkaline washing time at 15 minutes to completely neutralize the residues of acidic substances, and finally fishing out the nylon 6DTY raw material from the alkaline washing tank, thereby improving the smoothness of the fiber surface, reducing friction among fibers, reducing the risk of fuzzing and pilling, and then fully washing for 20 minutes again by using a high-pressure water gun to enable the sodium hydroxide solution to be washed cleanly;
step S4 further includes the following formula for calculating the volume of the sodium hydroxide solution:
V＝m/C
wherein the concentration (C) is 2%, i.e., 0.02; m represents the weight of the chinlon 6DTY raw material;
further, alkaline washing of nylon 6DTY raw material DTY (6D drip propylene polyamide) raw material can produce various effects including:
removing impurities: the impurities, dirt and residues in the nylon 6DTY raw material can be removed by alkali washing, so that the raw material is purer;
improving flexibility: the softness of the nylon 6DTY raw material DTY can be improved by alkali washing, so that the nylon 6DTY raw material DTY is more suitable for manufacturing soft fiber products of fabrics and silk stockings;
improving the color: the alkaline washing can improve the color uniformity of the DTY of the chinlon 6DTY raw material, so that the chinlon 6DTY raw material has better dye absorbing capacity, and thus, brighter and consistent colors are obtained;
increasing uniformity: the alkali washing can improve the uniformity of the nylon 6DTY raw material, and ensure that consistent performance and appearance are obtained when the fiber product is manufactured;
removing peculiar smell: the alkaline washing can remove peculiar smell or bad smell in the raw materials, so that the final product is more pleasant;
improving the softness of the fiber: the treated nylon 6DTY raw material fiber is possibly softer, is more suitable for manufacturing clothes and fabrics, and provides better wearing comfort;
improving dyeing effect: the treated nylon 6DTY raw material can be dyed more easily, and the dye can be permeated into the fiber more uniformly, so that the dyeing effect is improved;
reducing static electricity: the treated nylon 6DTY raw material can reduce the generation of static electricity and reduce the possibility of dust and dirt adsorption;
prolonging the service life of the product: the service life of the fiber product can be prolonged by reducing fuzzing and pilling, and the replacement and maintenance cost is reduced;
the appearance and texture of the product are improved: the treated nylon 6DTY raw material can have smoother and uniform appearance, and the texture and the appearance attraction of the product are improved.
Fifth embodiment:
referring to fig. 1 and 6, the pretreatment method of the nylon 6DTY raw material with good air permeability further comprises the following steps:
step S5, bleaching: the nylon 6DTY raw material after alkaline washing is put into a bleaching tank, and sodium hypochlorite bleaching agent with the concentration of 3% is required to be added, wherein the mass formula is as follows:
M＝m×C
wherein M is the mass of sodium hypochlorite; m is the mass of the nylon 6DTY raw material; c is sodium hypochlorite concentration
Uniformly stirring a bleaching agent and the nylon 6DTY raw material, keeping the temperature at 60 ℃, controlling the bleaching time at 40 minutes, fishing out the bleached nylon 6DTY raw material from a bleaching tank, and then fully flushing the nylon 6DTY raw material by using a high-pressure water gun to remove bleaching agent residues, so that the bleaching agent not only removes messy redundant pigment and residual dirt, but also is used for reducing the adhesion of impurities to the surface of the nylon 6DTY raw material, and further improving the air permeability of the nylon 6DTY raw material;
further, bleached chinlon 6DTY raw materials are generally used for removing pigments, impurities and other impurities in the raw materials to improve the color and purity of the fiber, and the bleaching effect further comprises:
and (3) removing color: bleaching can obviously reduce or remove pigment in the chinlon 6DTY raw material, so that the chinlon 6DTY raw material becomes more white or colorless;
removing impurities: impurities and dirt in the raw materials can be removed in the bleaching process, so that the purity of the fiber is improved;
the dyeing performance is improved: the bleached nylon 6DTY raw material is easier to absorb dye, so that a more vivid and uniform dyeing effect can be obtained;
improving gloss: bleaching can improve the surface gloss of the nylon 6DTY raw material DTY, so that the nylon 6DTY raw material DTY looks brighter;
the consistency of products is improved: bleaching can improve the consistency of raw materials and ensure the color and the performance stability of the final product.
Example six:
referring to fig. 1, the pretreatment method of the nylon 6DTY raw material with good air permeability further comprises the following steps:
step S6, softening: placing the bleached nylon 6DTY raw material into a softening treatment tank, adding a softener accounting for 3% of the weight of the nylon 6DTY raw material into the softening treatment tank, uniformly stirring the softener and the nylon 6DTY raw material, keeping the temperature at about 23 ℃, controlling the softening treatment time to be 30 minutes, enabling the softener to soften the nylon 6DTY raw material, improving the softness of the nylon 6DTY raw material, and then fully flushing the nylon 6DTY raw material by using a high-pressure water gun through clear water to remove softener residues;
further, the softening treatment is to carry out special treatment on the nylon 6DTY raw material so as to improve the softness and the hand feeling, and the effect of the softening treatment also comprises the following aspects:
softness improves: the softening treatment can make the fiber of the nylon 6DTY raw material softer, reduce the rigidity and hardness of the fiber and improve the comfort and touch feeling of the product;
elasticity improvement: the elasticity of the nylon 6DTY raw material can be improved by softening treatment, so that the nylon 6DTY raw material has better rebound resilience and stretchability, and the wearing comfort and the extensibility of the product are improved;
improvement of wrinkle resistance: the softening treatment can improve the crease resistance of the nylon 6DTY raw material, reduce the generation of wrinkles, and enable the product to be easier to fold and arrange;
improved hand feel: the surface of the nylon 6DTY raw material is smooth and fine by softening treatment, so that the touch feeling and texture of the product are improved, and the product is more comfortable and has texture.
Embodiment seven:
referring to fig. 1, the pretreatment method of the nylon 6DTY raw material with good air permeability further comprises the following steps:
step S7, heat setting: heating the nylon 6DTY raw material subjected to softening treatment to 200 ℃ for 10 minutes, then placing the heated nylon 6DTY raw material on a biaxial stretching device, applying tension to enable the nylon 6DTY raw material to be simultaneously biaxially stretched in the horizontal and vertical directions, then placing the stretched nylon 6DTY raw material in cold water for cooling to fix the structure of the nylon 6DTY raw material, wherein the cold water temperature is 0 ℃ and the cooling time is 10 minutes, and after cooling is completed, enabling the molecular structure of the nylon 6DTY raw material to be fixed again after stretching adjustment to increase the performance, thereby improving the elasticity and the ductility of the fiber;
step S8, drying: drying the cooled nylon 6DTY raw material to remove residual moisture for later dyeing and sewing;
further, (1) biaxially stretching the nylon 6DTY raw material on the biaxially stretching device to uniformly arrange molecular chains of the nylon 6DTY raw material in both the transverse direction and the longitudinal direction, wherein the molecular chains of the nylon 6DTY raw material are straightened in the stretching process, the molecular structure and the molecular arrangement mode of the nylon 6DTY raw material are changed through biaxially stretching, and the pore structure of the nylon 6DTY raw material is changed through heat setting treatment, so that the air permeability is improved;
(2) Heat setting is commonly used to improve its shape and performance, and the effect of heat setting also includes the following:
shape stability: through heat setting, the molecular structure of the nylon 6DTY raw material can be changed, so that the nylon 6DTY raw material can keep a specific shape at a certain temperature, and the nylon 6DTY raw material can be used for manufacturing products which need to keep the shape, such as steel wires, zippers, cables and the like;
improvement of wrinkle resistance: the crease resistance of the nylon 6DTY raw material can be improved by heat setting, so that the nylon 6DTY raw material is not easy to generate wrinkles in the wearing and using processes, and the clean appearance is maintained;
intensity increases: after heat setting treatment, the nylon 6DTY raw material generally has higher strength and wear resistance, and is suitable for manufacturing products requiring high strength, such as ropes, cables, materials for industrial use and the like;
shape memory: the heat setting can endow the nylon 6DTY raw material with shape memory capability, and the nylon 6DTY raw material can quickly recover the original shape even after deformation.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in several specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (10)

1.一种透气性好的锦纶6DTY原料预处理方法，其特征在于：锦纶6DTY原料预处理方法包括以下步骤：1. A nylon 6DTY raw material pretreatment method with good air permeability, characterized in that: the nylon 6DTY raw material pretreatment method includes the following steps: (1)浸泡；(1) Soaking; (2)清洗；(2) Cleaning; (3)酸洗；(3) Pickling; (4)碱洗；(4) Alkali cleaning; (5)漂白；(5) Bleaching; (6)柔软处理；(6) Softening treatment; (7)热定型；(7) Heat setting; (8)干燥；(8) Drying; 所述清洗用于将浸泡后残留在锦纶6DTY原料表面的油脂和不溶性杂质进一步去除，防止油脂和不溶性杂质将锦纶6DTY原料孔隙堵塞，从而提高锦纶6DTY原料的透气性。The cleaning is used to further remove the grease and insoluble impurities remaining on the surface of the nylon 6DTY raw material after soaking, to prevent the grease and insoluble impurities from clogging the pores of the nylon 6DTY raw material, thereby improving the breathability of the nylon 6DTY raw material. 2.根据权利要求1所述的一种透气性好的锦纶6DTY原料预处理方法，其特征在于：所述锦纶6DTY原料预处理方法如下：2. A kind of nylon 6DTY raw material pretreatment method with good air permeability according to claim 1, characterized in that: the nylon 6DTY raw material pretreatment method is as follows: 步骤S1、浸泡：将锦纶6DTY原料放置在60摄氏度的清水中浸泡40分钟，因此将附着在锦纶6DTY原料表面上的油脂和不可溶杂质与锦纶6DTY原料分离，便于后期清洗；Step S1, soaking: Soak the nylon 6DTY raw material in clean water at 60 degrees Celsius for 40 minutes. Therefore, the grease and insoluble impurities attached to the surface of the nylon 6DTY raw material will be separated from the nylon 6DTY raw material to facilitate later cleaning; 步骤S2、清洗：将浸泡好的锦纶6DTY原料放入长度、宽度为3m，深度为2m的洗涤槽中，再向洗涤槽中加入9升水温在35摄氏度的温水，使温水将锦纶6DTY原料完全浸没，同时再加入130克的洗衣液，将锦纶6DTY原料与洗衣液水溶液充分浸泡10分钟，再用捣衣棒顺时针轻轻搅拌5分钟再逆时针轻轻搅拌5分钟，随后再将锦纶6DTY原料从温水中捞出，使用高压水枪对锦纶6DTY原料冲洗10分钟，确保去除表面的杂质、油脂、污垢和残留的洗衣液，从而改善锦纶6DTY原料的透气性，最后，使用离心机对锦纶6DTY原料离心脱水快速有效地去除大部分水分。Step S2. Cleaning: Put the soaked nylon 6DTY raw material into a washing tank with a length, width of 3m and a depth of 2m. Then add 9 liters of warm water at 35 degrees Celsius into the washing tank so that the warm water can completely wash the nylon 6DTY raw material. Submerge, and then add 130 grams of laundry detergent, fully soak the nylon 6DTY raw material and laundry detergent solution for 10 minutes, then use a tamper to gently stir clockwise for 5 minutes and then counterclockwise for 5 minutes, and then add nylon 6DTY Take the raw materials out of warm water and use a high-pressure water gun to rinse the nylon 6DTY raw materials for 10 minutes to ensure that impurities, grease, dirt and residual laundry detergent on the surface are removed, thereby improving the breathability of the nylon 6DTY raw materials. Finally, use a centrifuge to clean the nylon 6DTY raw materials. Centrifugal dehydration of raw materials removes most of the water quickly and efficiently. 3.根据权利要求2所述的一种透气性好的锦纶6DTY原料预处理方法，其特征在于：所述锦纶6DTY原料预处理方法包括以下内容：3. A nylon 6DTY raw material pretreatment method with good air permeability according to claim 2, characterized in that: the nylon 6DTY raw material pretreatment method includes the following: 步骤S3、酸洗：将脱水后的锦纶6DTY原料放入酸洗槽中，再将锦纶6DTY原料与2％稀硫酸溶液搅拌均匀，保持温度在20摄氏度，酸洗时间控制在10分钟，酸洗使锦纶6DTY原料表面的羧基含量增加，从而增强锦纶6DTY原料纤维的亲水性，改善锦纶6DTY原料纤维的湿润性能，随后再将酸洗后的锦纶6DTY原料中的稀硫酸物质通过高压水枪充分冲洗干净。Step S3, pickling: Put the dehydrated nylon 6DTY raw material into the pickling tank, then stir the nylon 6DTY raw material and 2% dilute sulfuric acid solution evenly, keep the temperature at 20 degrees Celsius, and control the pickling time to 10 minutes. Pickling The carboxyl content on the surface of the nylon 6DTY raw material is increased, thereby enhancing the hydrophilicity of the nylon 6DTY raw material fiber and improving the wetting properties of the nylon 6DTY raw material fiber. Then the dilute sulfuric acid substance in the pickled nylon 6DTY raw material is fully rinsed with a high-pressure water gun. clean. 4.根据权利要求2所述的一种透气性好的锦纶6DTY原料预处理方法，其特征在于：所述锦纶6DTY原料预处理方法还包括：4. A kind of nylon 6DTY raw material pretreatment method with good air permeability according to claim 2, characterized in that: the nylon 6DTY raw material pretreatment method also includes: 步骤S4、碱洗：将酸洗后冲洗完全的锦纶6DTY原料放入碱洗槽中，使锦纶6DTY原料与2％氢氧化钠溶液搅拌均匀，同时保持温度为40摄氏度，碱洗时间控制在15分钟完全中和酸性物质的残留，最后再将锦纶6DTY原料从碱洗槽中捞出，从而改善纤维表面的平滑度，这减少纤维之间的摩擦，降低起毛和起球的风险，随后再用高压水枪再次充分冲洗20分钟，使氢氧化钠溶液被冲洗干净。Step S4, alkali washing: Put the nylon 6DTY raw material that has been completely rinsed after pickling into an alkali washing tank, stir the nylon 6DTY raw material and 2% sodium hydroxide solution evenly, while maintaining the temperature at 40 degrees Celsius, and control the alkali cleaning time at 15 Minutes to completely neutralize the residue of acidic substances, and finally remove the nylon 6DTY raw material from the alkali washing tank to improve the smoothness of the fiber surface, which reduces the friction between fibers and reduces the risk of fluffing and pilling, and then reuse Rinse thoroughly with the high-pressure water gun for another 20 minutes so that the sodium hydroxide solution is rinsed clean. 5.根据权利要求2所述的一种透气性好的锦纶6DTY原料预处理方法，其特征在于：所述锦纶6DTY原料预处理方法还包括：5. A kind of nylon 6DTY raw material pretreatment method with good air permeability according to claim 2, characterized in that: the nylon 6DTY raw material pretreatment method also includes: 步骤S5、漂白：将碱洗后的锦纶6DTY原料放入漂白槽中，需要加入浓度为3％的次氯酸钠漂白剂的质量公式如下：Step S5. Bleaching: Put the alkali-washed nylon 6DTY raw material into the bleaching tank. The mass formula of sodium hypochlorite bleach with a concentration of 3% needs to be added as follows: M＝m×CM＝m×C 其中，M为次氯酸钠的质量；m为锦纶6DTY原料质量；C为次氯酸钠浓Among them, M is the mass of sodium hypochlorite; m is the mass of nylon 6DTY raw material; C is the concentration of sodium hypochlorite. 使漂白剂和锦纶6DTY原料搅拌均匀，同时保持温度为60摄氏度，控制漂白时间为40分钟，再将漂白后的锦纶6DTY原料从漂白槽内捞出，然后使用高压水枪对锦纶6DTY原料充分冲洗，以去除漂白剂残留，漂白不但去除杂乱的多余色素和残留的污垢，同时用于减少杂质附着锦纶6DTY原料表面，进一步改善锦纶6DTY原料的透气性。Stir the bleach and nylon 6DTY raw material evenly, while keeping the temperature at 60 degrees Celsius, and controlling the bleaching time to 40 minutes. Then take the bleached nylon 6DTY raw material out of the bleaching tank, and then use a high-pressure water gun to fully rinse the nylon 6DTY raw material. To remove bleach residues, bleaching not only removes messy excess pigments and residual dirt, but also reduces impurities adhering to the surface of nylon 6DTY raw materials, further improving the breathability of nylon 6DTY raw materials. 6.根据权利要求2所述的一种透气性好的锦纶6DTY原料预处理方法，其特征在于：所述锦纶6DTY原料预处理方法还包括：6. A kind of nylon 6DTY raw material pretreatment method with good air permeability according to claim 2, characterized in that: the nylon 6DTY raw material pretreatment method also includes: 步骤S6、柔软处理：将漂白后的锦纶6DTY原料放入柔软处理槽中，加入锦纶6DTY原料重量的3％柔软剂到柔软处理槽中，使柔软剂与锦纶6DTY原料搅拌均匀，保持温度在23摄氏度，控制柔软处理时间为30分钟，使柔软剂将锦纶6DTY原料柔软处理，提高了锦纶6DTY原料的柔软度，然后用高压水枪通过清水对锦纶6DTY原料充分冲洗，以去除柔软剂残留。Step S6, Softening treatment: Put the bleached nylon 6DTY raw material into the softening treatment tank, add 3% softener by weight of the nylon 6DTY raw material into the softening treatment tank, stir the softener and the nylon 6DTY raw material evenly, and keep the temperature at 23 degrees Celsius, control the softening treatment time to 30 minutes, so that the softener can soften the nylon 6DTY raw material and improve the softness of the nylon 6DTY raw material. Then use a high-pressure water gun to fully rinse the nylon 6DTY raw material with clean water to remove the softener residue. 7.根据权利要求2所述的一种透气性好的锦纶6DTY原料预处理方法，其特征在于：所述锦纶6DTY原料预处理方法还包括：7. A kind of nylon 6DTY raw material pretreatment method with good air permeability according to claim 2, characterized in that: the nylon 6DTY raw material pretreatment method also includes: 步骤S7、热定型：将柔软处理后的锦纶6DTY原料加热至200摄氏度，加热时间为10分钟，然后将加热后的锦纶6DTY原料放置在双向拉伸装置上，通过施加拉力使锦纶6DTY原料同时在水平和垂直方向上进行双向拉伸，随后，再通过将拉伸后的锦纶6DTY原料放置在冷水中冷却来固定锦纶6DTY原料的结构，冷水温度为0度，冷却时间为10分钟，冷却完成后使锦纶6DTY原料分子结构通过拉伸调整后再次固定来增加性能，从而提高纤维的弹性和延展性；Step S7, heat setting: Heat the softened nylon 6DTY raw material to 200 degrees Celsius for 10 minutes. Then place the heated nylon 6DTY raw material on the bidirectional stretching device, and apply tensile force to make the nylon 6DTY raw material stretch at the same time. Bidirectional stretching is performed in the horizontal and vertical directions, and then the structure of the nylon 6DTY raw material is fixed by placing the stretched nylon 6DTY raw material in cold water for cooling. The cold water temperature is 0 degrees and the cooling time is 10 minutes. After the cooling is completed The molecular structure of nylon 6DTY raw material is adjusted by stretching and then fixed again to increase performance, thereby improving the elasticity and ductility of the fiber; 步骤S8、干燥：将冷却后的锦纶6DTY原料进行干燥，以去除残留的水分，以备后期染色和缝制工作的使用。Step S8. Drying: Dry the cooled nylon 6DTY raw material to remove residual moisture in preparation for later dyeing and sewing work. 8.根据权利要求2所述的一种透气性好的锦纶6DTY原料预处理方法，其特征在于：所述步骤S2中，还包括如下步骤：8. A kind of nylon 6DTY raw material pretreatment method with good air permeability according to claim 2, characterized in that: in step S2, it also includes the following steps: 步骤S21、洗涤槽的计算公式为：Step S21, the calculation formula of the washing tank is: V＝LxWxDV＝LxWxD 其中，in, V代表容积；L代表长度；W代表宽度；D代表深度；V represents volume; L represents length; W represents width; D represents depth; 选用喷嘴为4.0的高压水枪，再根据喷嘴为4.0调整高压水枪的压力值为4000磅/平方英寸，此时高压水枪的流量为8加仑/分钟，工作人员再手持高压水枪依次调整角度分别为40度、25度、15度、0度，0度适用于清除顽固污渍，15度适用于清除较顽固污渍，25度适用于较易清除污渍，40度适用于清洗较大面积的易清除污渍，使工作人员使用高压水枪分别使用40度冲洗3分钟，25度冲洗3分钟，15度冲洗2分钟和0度冲洗2分钟，使高压水枪总共对锦纶6DTY原料冲洗10分钟。Select a high-pressure water gun with a nozzle of 4.0, and then adjust the pressure value of the high-pressure water gun to 4000 pounds per square inch according to the nozzle of 4.0. At this time, the flow rate of the high-pressure water gun is 8 gallons per minute. The staff then holds the high-pressure water gun and adjusts the angle to 40 degrees. Degree, 25 degrees, 15 degrees, 0 degrees, 0 degrees is suitable for removing stubborn stains, 15 degrees is suitable for removing more stubborn stains, 25 degrees is suitable for easier removal of stains, 40 degrees is suitable for cleaning larger areas of easy-to-remove stains. Let the staff use a high-pressure water gun to rinse at 40 degrees for 3 minutes, 25 degrees for 3 minutes, 15 degrees for 2 minutes, and 0 degrees for 2 minutes, so that the high-pressure water gun washes the nylon 6DTY raw material for a total of 10 minutes. 9.根据权利要求3所述的一种透气性好的锦纶6DTY原料预处理方法，其特征在于：所述步骤S3中，还包括如下步骤：9. A kind of nylon 6DTY raw material pretreatment method with good air permeability according to claim 3, characterized in that: in step S3, it also includes the following steps: 步骤S31、稀硫酸溶液的体积公式如下：Step S31, the volume formula of dilute sulfuric acid solution is as follows: 稀硫酸溶液的体积＝W×0.02/CVolume of dilute sulfuric acid solution=W×0.02/C 其中，W表示锦纶6DTY原料的重量；Among them, W represents the weight of nylon 6DTY raw material; C表示稀硫酸溶液的浓度。C represents the concentration of dilute sulfuric acid solution. 10.根据权利要求4所述的一种透气性好的锦纶6DTY原料预处理方法，其特征在于：所述步骤S4中，还包括如下步骤：10. A method for pretreatment of nylon 6DTY raw materials with good air permeability according to claim 4, characterized in that: in step S4, the following steps are also included: 步骤S41、氢氧化钠溶液的体积计算公式如下：Step S41, the volume calculation formula of the sodium hydroxide solution is as follows: V＝m/CV＝m/C 其中，浓度(C)为2％，即0.02；m表示锦纶6DTY原料的重量。Among them, the concentration (C) is 2%, that is, 0.02; m represents the weight of nylon 6DTY raw material.
CN202311458223.8A 2023-11-05 2023-11-05 A pretreatment method for nylon 6DTY raw materials with good air permeability Pending CN117488538A (en)

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Application publication date: 20240202