CN109778551B - Processing method of durable waterproof, oil-proof, antifouling, waterproof and moisture-permeable fabric - Google Patents
Processing method of durable waterproof, oil-proof, antifouling, waterproof and moisture-permeable fabric Download PDFInfo
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- CN109778551B CN109778551B CN201910025478.2A CN201910025478A CN109778551B CN 109778551 B CN109778551 B CN 109778551B CN 201910025478 A CN201910025478 A CN 201910025478A CN 109778551 B CN109778551 B CN 109778551B
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Abstract
The invention relates to a processing method of a durable waterproof, oil-proof, antifouling, waterproof and moisture-permeable fabric, which comprises the following steps: (1) the method comprises the following steps of (1) padding and finishing the fabric by adopting a durable fluorine-based waterproof, oil-proof and antifouling finishing agent, (2) carrying out sanding treatment on the reverse side of the fabric, (3) carrying out calendering treatment on the sanded surface of the fabric, (4) carrying out waterproof moisture-permeable primer coating treatment, and (5) carrying out waterproof moisture-permeable surface glue coating treatment. The fabric has the performances of water resistance, oil resistance, stain resistance, water resistance and moisture permeability, and the fabric after treatment has good binding fastness, excellent washing fastness and lasting performance.
Description
Technical Field
The invention relates to the field of textile fabric after-finishing, in particular to a processing method of a terylene or chinlon waterproof, oil-proof, antifouling, waterproof and moisture-permeable fabric, which enables the fabric to have waterproof, oil-proof, antifouling, waterproof and moisture-permeable performances at the same time. The treated fabric has the characteristics of good fastness, excellent washing fastness, lasting performance, simple process and easy large-scale production and operation.
Background
With the development of society and the progress of times, the functional fabric is more and more applied to the daily dressing needs of people. After the fabric is subjected to waterproof, oil-proof and antifouling finishing, water, oil (including engine oil, food oil and the like) and stains (soy sauce, soup, jam, milk, coffee and the like) are not easy to infiltrate into the fabric, so that the fabric of the clothes keeps clean and clean for a long time, the washing times are reduced, and the fabric is durable and easy to manage, and is widely accepted by people.
The fabric waterproofness is that the fabric is subjected to water repellent finishing to change the surface performance of fibers, so that the hydrophilicity of the fiber surface is changed into hydrophobicity, water drops roll on the fabric surface without wetting, the water drops are prevented from entering the fabric from the outside, and the dryness of the inside of the fabric is kept.
The oil resistance of the fabric is realized by changing the surface property of the fiber through a chemical finishing method. The surface of the fiber has a low-energy surface, and the fiber has the characteristic of non-wetting to grease with small surface tension, so that the fabric is not easily stained and wetted by oily dirt.
The fabric stain resistance is an effect of reducing the accumulation of dirt by changing the fabric texture and the surface state of fibers. The antifouling finishing agent forms a molecular barrier on the surface of the fabric, prevents wetting of water and various oil stains and dirt, is in a liquid state even if water or the oil stains are retained on the surface of the fabric, and is easy to remove.
The waterproof moisture-permeable fabric means that water is not soaked into the fabric under certain pressure, and sweat emitted by a human body can be conducted out of the body through the fabric in a water vapor mode, so that the sweat is prevented from accumulating and condensing between the body surface and the fabric, and the dryness and comfort of the garment are kept. The waterproof moisture-permeable fabric can be prepared by a coating and a compounding method.
The waterproof moisture permeable fabric is a garment fabric which has excellent performance and is widely applied at present. The product is mainly applied to military, fire fighting, outdoor sports, medical and special industries, and high-performance clothes such as raincoats, cold protective clothing, ski wear, climbing clothing, medical protective clothing and the like.
In order to improve the cleaning and durability performance of the fabric, reduce the washing times and facilitate the daily care requirement of the garment, the waterproof and moisture permeable fabric is added with waterproof, oil-proof and antifouling performances so as to further improve the comprehensive wearability of the fabric.
The fabric is padded by a waterproof, oil-proof and antifouling finishing agent, and a molecular barrier is formed around each fiber by utilizing a fluorine-containing compound technology, so that the critical surface tension of the fiber is reduced, the water-based and oily liquid stains can be effectively resisted, and the fabric is kept dry, comfortable and clean for a long time. But simultaneously, due to the strong hydrophobic and oleophobic properties, the coating material is difficult to infiltrate into the fiber to generate good bonding fastness with the fiber, the initial fastness of some fabrics after coating can be improved, but after washing, the problems of crinkling, bubbling, stripping and the like of an adhesive film often occur, the water impermeability is greatly reduced, the washing resistance and the durability are poor, and the wearability of the product is seriously influenced.
CN106320024A discloses an after-finishing process of waterproof, oilproof and antifouling fabric, which adopts a hot-pressing and film-covering method to realize the waterproof, oilproof and antifouling performances of the fabric, but does not have the waterproof and moisture-permeable functions.
CN205736294U discloses a waterproof, oil-proof and antifouling fabric, which is characterized in that an oil-repellent layer, a hydrophobic layer, a base layer, a hydrophobic layer and an oil-repellent layer are sequentially arranged through a weaving process of different fiber components to realize the waterproof, oil-proof and antifouling effects of the fabric, but the fabric does not have the waterproof and moisture-permeable functions.
CN 106544885A discloses a fabric coating with high water resistance and high moisture permeability and a process thereof, which realize the water resistance and moisture permeability and the flame retardant property of the fabric by a coating method, but the fabric coating does not have the water resistance, oil resistance and antifouling property, and the washing resistance is not mentioned.
Disclosure of Invention
The invention aims to provide a processing method of polyester or nylon fabric with durable waterproof, oil-proof, antifouling, waterproof and moisture-permeable performances, so that the fabric has the waterproof, oil-proof, antifouling, waterproof and moisture-permeable performances, and the processed fabric has good bonding fastness, excellent washability, lasting performance and easy large-scale production operation.
The invention firstly carries out the dipping and rolling finishing on the terylene or chinlon fabric by waterproof, oil-proof and antifouling finishing liquid, and obtains good waterproof, oil-proof and antifouling performances after baking at 180 ℃ with 170-; then the reverse side of the fabric after the waterproof, oil-proof and antifouling finishing is sanded to obtain fine, dense and short velvet, the wettability of the sanded surface of the fabric is improved, and then the finishing of a waterproof and moisture-permeable coating is carried out on the sanded surface, so that the fabric can obtain lasting waterproof, oil-proof, antifouling and waterproof moisture-permeable performances simultaneously, and can still keep better waterproof, oil-proof, antifouling and higher waterproof moisture-permeable performances after being washed for many times.
The invention discloses an anti-processing method of a durable waterproof, oil-proof, antifouling, waterproof and moisture-permeable fabric, which comprises the following steps:
(1) fabric: polyester and nylon woven fabric;
(2) finishing the waterproof, oil-proof and antifouling fabric: the durable fluorine-based waterproof, oil-proof and antifouling agent is adopted to carry out padding finishing on the fabric to obtain the waterproof, oil-proof and antifouling fabric, namely the waterproof, oil-proof and antifouling fabric
(2-1) preparing a waterproof, oil-proof and antifouling finishing agent: preparing a durable fluorine water-proof oil-proof antifouling finishing agent 50-80g/L and a water-based blocked isocyanate crosslinking agent 10-20g/L aqueous solution from the durable fluorine water-proof oil-proof antifouling finishing agent, the water-based blocked isocyanate crosslinking agent and water, and adjusting the pH value to 4-6 by using glacial acetic acid or citric acid;
the durable fluorine-based waterproof, oil-proof and antifouling finishing agent can be a durable C8 fluorine-based waterproof, oil-proof and antifouling finishing agent or a durable C6 fluorine-based waterproof, oil-proof and antifouling finishing agent;
(2-2) padding and finishing the fabric: padding and finishing the fabric in the finishing liquid prepared in the step (2-1), fully penetrating the finishing liquid, drying the fabric at 120-140 ℃ with the rolling residual rate of 40-65%, and baking the fabric at 170-180 ℃ for 50-60 seconds to obtain the waterproof, oil-proof and antifouling fabric;
(3) sanding treatment: sanding the reverse side of the fabric subjected to the waterproof, oil-proof and antifouling finishing in the step (2) to obtain fine, dense and short velvet on the reverse side of the fabric;
(4) and (3) calendering treatment: calendering the ground rough surface of the fabric obtained in the step (3), wherein the calendering temperature is 100-120 ℃, the pressure is 9-11 MPa, and the fabric speed is 20-30 m/min;
(5) and (3) waterproof moisture-permeable coating treatment:
(5-1) primer preparation:
the raw materials are proportioned according to the weight portion
Trifunctional polyether type waterproof moisture-permeable polyurethane resin: 100
Isocyanate crosslinking agent: 1-1.5
Aziridine-modified isocyanate crosslinker: 1-2
Acid crosslinking accelerator: 1-1.5
Diluent agent: proper amount of
Uniformly mixing and stirring the materials, and adjusting the viscosity to 18000-22000 mPa & s by using a diluent to obtain a coating primer A;
the diluent is as follows: one or two or more of butanone, toluene and dimethylformamide can be selected for mixing use;
(5-2) preparation of face glue
The raw materials are proportioned according to the weight portion
High molecular weight polyether type waterproof moisture-permeable polyurethane resin: 100
Diluent agent: proper amount of
Adjusting the viscosity of the polyether waterproof moisture-permeable polyurethane resin with large molecular weight to 6000-7000 mPas by using a diluent to obtain a coating surface adhesive B;
the diluent is as follows: one or two or more of butanone, toluene and dimethylformamide can be selected for mixing use;
(5-3) coating treatment:
coating the fabric calendering surface obtained in the step (4) by using a floating knife type coating machine;
firstly, coating a primer A, baking for 60-90 s at the baking oven temperature of 100-130 ℃, and increasing the dry weight by 25-35 g/m2；
Then, a surface adhesive B coating is carried out on the surface of the primer A coating, the baking oven temperature is 140-165 ℃, the baking is carried out for 40-60 s, and the dry weight gain is 8-12 g/m2And obtaining the product.
According to the invention, the water-based blocked isocyanate crosslinking agent is compounded in the fluorine-based waterproof, oil-proof and antifouling finishing agent liquid, the-NCO group contained in the blocked isocyanate crosslinking agent can react with the hydroxyl in the fluorine-based waterproof agent (fluorocarbon resin) to form crosslinking, and simultaneously the-NCO group can react with active hydrogen in terylene and chinlon fabrics to further promote the combination fastness of the waterproof, oil-proof and antifouling finishing agent and the fabrics, so that the washing fastness of the finished fabrics is improved, and the protection effects of water level, oil repellency and pollution resistance of more than 3 levels can be kept after multiple times of washing, so that the fabrics obtain lasting and super-strong waterproof, oil-proof and antifouling performances.
The invention adopts a sanding process to treat the super-strong waterproof, oil-proof and antifouling fabric and then carries out a waterproof moisture-permeable coating processing method to obtain the durable waterproof, oil-proof, antifouling and waterproof moisture-permeable fabric, and the principle is as follows: the invention firstly grinds the back of the super-strong waterproof, oil-proof and antifouling fabric to destroy the continuity of the film of the waterproof and oil-proof agent on the surface of the fabric, weaken the waterproof and oil-proof effects on the back surface of the fabric, improve the surface energy, ensure that the surface of the fabric is not wetted to be easily wetted, ensure that coating glue is easy to spread and permeate into the fiber in the later waterproof and moisture permeable coating finishing, and promote the good bonding fastness of the coating glue and the fabric, the coating film is not peeled, foamed or cracked after being washed for many times in the using process of the coating fabric, the coating film is ensured to be intact, and the coating film of the super-strong waterproof, oil-proof and antifouling fabric is ensured to have lasting water seepage resistance.
The water-proof oil-proof stain-proof fabric with different strengths forms different contact angles with liquid, when the contact angle is larger, the water-proof property and the oil-proof property are stronger, and the liquid coating material is less prone to be soaked into the fiber, so that good combination is achieved; the smaller the contact angle, the weaker the hydrophobic and oleophobic properties are, so that the liquid coating material is easier to penetrate into the fiber to be combined with the fiber, and the better combination fastness is obtained.
According to the invention, the wetting degree of the surface of the super-strong waterproof, oil-proof and antifouling fabric is improved through sanding and finishing, and the contact area between the coating material and the fabric is enlarged, so that the coating material can fully permeate into the fiber after being coated, thereby achieving good bonding fastness and ensuring that the coated fabric has good washing fastness.
The invention carries out calendaring treatment on the ground rough surface of the fabric, so that the fabric surface obtains smooth and compact effect, thereby being beneficial to the continuity and soft hand feeling of a glue coating film in the next step, improving hydrostatic pressure index and ensuring the water seepage resistance of the coated fabric.
The invention selects the coating adhesive prepared by trifunctional polyether type waterproof moisture permeable polyurethane resin to coat the fabric, thereby ensuring that the finished fabric has excellent water permeation resistance and good moisture permeability, and ensuring that the coating adhesive and the waterproof, oil-proof and antifouling fabric have good bonding fastness.
The aziridine modified isocyanate cross-linking agent (HD-300) reacts with amino and carboxyl in polyether polyurethane, chain extension is carried out, a cross-linked polymer with a strong bonding force is generated, the strength and the friction resistance of resin can be effectively improved after drying and heat treatment, meanwhile, an-NCO group contained in the isocyanate cross-linking agent in the coating primer formula can react with active hydrogen in terylene and nylon fabrics, the bonding fastness of the coating adhesive and fabrics is further ensured, the fabrics after coating finishing have high washing resistance requirements, and the fabrics obtain durable waterproof moisture permeability.
Detailed Description
Example 1
(1) Fabric: 75 Dx 75D/156 x 102, gram weight 90 g/m2Polyester pongee.
(2) Finishing the waterproof, oil-proof and antifouling fabric:
(2-1) preparing a waterproof, oil-proof and antifouling finishing agent: preparing 55g/L aqueous solution of durable C8 fluorine-based water-proof oil-proof antifouling finishing agent and 11g/L aqueous blocked isocyanate crosslinking agent from durable C8 fluorine-based water-proof oil-proof antifouling finishing agent, aqueous blocked isocyanate crosslinking agent and water, and adjusting the pH value to 4 by glacial acetic acid;
(2-2) padding and finishing the fabric: padding and finishing the fabric in the finishing liquid prepared in the step (2-1), wherein the padding rate is 57%, the fabric is dried at the temperature of 140 ℃ and 120 ℃, and the fabric is dried at the temperature of 180 ℃ for 50s, so that the waterproof, oil-proof and antifouling fabric is obtained;
(3) sanding treatment: sanding the reverse side of the fabric subjected to the waterproof, oilproof and antifouling finishing in the step (2) on a sanding machine, wherein a No. 320 abrasive leather is adopted, the rotation speed of a sanding roller is 2200r/min, and the speed of the fabric is 28 m/min, so that the fine, dense and short-fiber sanded fabric is obtained;
(4) and (3) calendering treatment: calendering the sanded surface of the fabric obtained in the step (3), wherein the calendering temperature is 110 ℃, the pressure is 9MPa, and the fabric speed is 25 m/min;
(5) and (3) waterproof moisture-permeable coating treatment:
(5-1) primer preparation:
the raw materials are proportioned according to the weight portion
Trifunctional polyether type waterproof moisture-permeable polyurethane resin: 100
Isocyanate crosslinking agent: 1
Aziridine-modified isocyanate crosslinker: 1.5
Acid crosslinking accelerator: 1.2
Toluene: 15
Butanone: 5
Mixing the materials, and uniformly stirring to obtain a coating primer A with the viscosity of 19300 mPa & s;
(5-2) preparation of face glue
The raw materials are proportioned according to the weight portion
High molecular weight polyether type waterproof moisture-permeable polyurethane resin: 100
Toluene: 20
Dimethylformamide: 10
Mixing the materials, and uniformly stirring to obtain a coating surface adhesive B with the viscosity of 6600mPa & s;
(5-3) coating treatment:
coating the fabric calendering surface obtained in the step (4) by using a floating knife type coating machine;
firstly, coating a primer A, baking for 60s at the temperature of 100-130 ℃ in an oven, and increasing the dry weight by 27g/m2；
Then, a surface adhesive B coating is carried out on the surface of the primer A coating, the baking oven temperature is 140-165 ℃, the baking is carried out for 50s, and the dry weight gain is 9g/m2And obtaining the product.
Example 2
(1) Fabric: 160 Dx 160D/100 x 66 gram weight 130 g/m2Nylon taslon;
(2) finishing the waterproof, oil-proof and antifouling fabric:
(2-1) preparing a waterproof, oil-proof and antifouling finishing agent: preparing a durable C8 aqueous solution of 50g/L of the fluorine-based waterproof, oilproof and antifouling finishing agent and 10g/L of the water-based blocked isocyanate crosslinking agent from the durable C8 fluorine-based waterproof, oilproof and antifouling finishing agent, the water-based blocked isocyanate crosslinking agent and water, and adjusting the pH value to 5 by using glacial acetic acid;
(2-2) padding and finishing the fabric: padding and finishing the fabric in the finishing liquid prepared in the step (2-1), wherein the padding rate is 65%, drying is carried out at the temperature of 140 ℃ and 120 ℃, and drying is carried out for 60s at the temperature of 170 ℃ to obtain the waterproof, oil-proof and antifouling fabric;
(3) sanding treatment: sanding the reverse side of the fabric subjected to the waterproof, oilproof and antifouling finishing in the step (2) on a sanding machine, wherein a No. 320 abrasive leather is adopted, the rotating speed of a sanding roller is 2000r/min, and the speed of the fabric is 25m/min, so that the fine, dense and short-fiber sanded fabric is obtained;
(4) and (3) calendering treatment: calendering the sanded surface of the fabric obtained in the step (3), wherein the calendering temperature is 120 ℃, the pressure is 11MPa, and the fabric speed is 20 m/min;
(5) and (3) waterproof moisture-permeable coating treatment:
(5-1) primer preparation:
the raw materials are proportioned according to the weight portion
Trifunctional polyether type waterproof moisture-permeable polyurethane resin: 100
Isocyanate crosslinking agent: 1.5
Aziridine-modified isocyanate crosslinker: 2
Acid crosslinking accelerator: 1.5
Toluene: 5
Butanone: 5
Mixing the materials, and uniformly stirring to obtain a coating base adhesive A with the viscosity of 22000mPa & s;
(5-2) preparation of face glue
The raw materials are proportioned according to the weight portion
High molecular weight polyether type waterproof moisture-permeable polyurethane resin: 100
Toluene: 15
Dimethylformamide: 10
Mixing the materials, and uniformly stirring to obtain a coating surface adhesive B with the viscosity of 7000mPa & s;
(5-3) coating treatment:
coating the fabric calendering surface obtained in the step (4) by using a floating knife type coating machine;
firstly, coating a primer A, baking for 90s at the temperature of 100-130 ℃ in an oven, and increasing the dry weight by 35g/m2；
Then, a surface adhesive B coating is carried out on the surface of the primer A coating, the baking oven temperature is 140-165 ℃, the baking time is 60s, and the dry weight gain is 12g/m2And obtaining the product.
Example 3
(1) Fabric: 40 Dx 40D/202 x 148 gram weight 80g/m2Nylon twill fabric.
(2) Finishing the waterproof, oil-proof and antifouling fabric:
(2-1) preparing a waterproof, oil-proof and antifouling finishing agent: preparing 60g/L aqueous solution of durable C8 fluorine-based water-proof oil-proof antifouling finishing agent and 12g/L aqueous blocked isocyanate crosslinking agent from durable C8 fluorine-based water-proof oil-proof antifouling finishing agent, aqueous blocked isocyanate crosslinking agent and water, and adjusting the pH value to 5 by glacial acetic acid;
(2-2) padding and finishing the fabric: padding and finishing the fabric in the finishing liquid prepared in the step (2-1), wherein the padding rate is 40%, drying is carried out at the temperature of 140 ℃ and 120 ℃, and drying is carried out for 50s at the temperature of 170 ℃ to obtain the waterproof, oil-proof and antifouling fabric;
(3) sanding treatment: sanding the reverse side of the fabric subjected to the waterproof, oilproof and antifouling finishing in the step (2) on a sanding machine, wherein No. 360 sanders are adopted, the rotating speed of a sanding roller is 2500r/min, and the speed of the fabric is 30m/min, so that the fine, dense and short-fiber sanded fabric is obtained;
(4) and (3) calendering treatment: calendering the sanded surface of the fabric obtained in the step (3), wherein the calendering temperature is 100 ℃, the pressure is 9MPa, and the fabric speed is 30 m/min;
(5) and (3) waterproof moisture-permeable coating treatment:
(5-1) primer preparation:
the raw materials are proportioned according to the weight portion
Trifunctional polyether type waterproof moisture-permeable polyurethane resin: 100
Isocyanate crosslinking agent: 1
Aziridine-modified isocyanate crosslinker: 1.2
Acid crosslinking accelerator: 1
Toluene: 15
Butanone: 8
Mixing the materials, and uniformly stirring to obtain a coating primer A with the viscosity of 18000mPa & s;
(5-2) preparation of face glue
The raw materials are proportioned according to the weight portion
High molecular weight polyether type waterproof moisture-permeable polyurethane resin: 100
Toluene: 25
Dimethylformamide: 10
Mixing the materials, and uniformly stirring to obtain a coating surface adhesive B with the viscosity of 6000mPa & s;
(5-3) coating treatment:
coating the fabric calendering surface obtained in the step (4) by using a floating knife type coating machine;
firstly, coating a primer A, baking for 60s at the temperature of 100-130 ℃ in an oven, and increasing the dry weight by 25g/m2；
Then, a surface adhesive B coating is carried out on the surface of the primer A coating, the baking oven temperature is 140-165 ℃, the baking is carried out for 40s, and the dry weight gain is 8g/m2And obtaining the product.
Example 4
(1) Fabric: 75 Dx 75D 240T gram weight 82 g/m2Polyester pongee;
(2) finishing the waterproof, oil-proof and antifouling fabric:
(2-1) preparing a waterproof, oil-proof and antifouling finishing agent: preparing 60g/L aqueous solution of durable C6 fluorine-based water-proof oil-proof antifouling finishing agent and 12g/L aqueous blocked isocyanate crosslinking agent from durable C6 fluorine-based water-proof oil-proof antifouling finishing agent, aqueous blocked isocyanate crosslinking agent and water, and adjusting the pH value to 6 by glacial acetic acid;
(2-2) padding and finishing the fabric: padding and finishing the fabric in the finishing liquid prepared in the step (2-1), wherein the padding rate is 60%, drying is carried out at the temperature of 140 ℃ and 120 ℃, and drying is carried out for 50s at the temperature of 180 ℃ to obtain the waterproof, oil-proof and antifouling fabric;
(3) sanding treatment: sanding the reverse side of the fabric subjected to the waterproof, oilproof and antifouling finishing in the step (2) on a sanding machine, wherein No. 320 abrasive leather is adopted, the rotation speed of a sanding roller is 2200r/min, and the fabric speed is 28 m/min, so that the fine and dense short-fiber sanded fabric is obtained;
(4) and (3) calendering treatment: calendering the sanded surface of the fabric obtained in the step (3), wherein the calendering temperature is 100 ℃, the pressure is 10MPa, and the fabric speed is 25 m/min;
(5) and (3) waterproof moisture-permeable coating treatment:
(5-1) primer preparation:
the raw materials are proportioned according to the weight portion
Trifunctional polyether type waterproof moisture-permeable polyurethane resin: 100
Isocyanate crosslinking agent: 1.2
Aziridine-modified isocyanate crosslinker: 1
Acid crosslinking accelerator: 1.2
Toluene: 10
Butanone: 10
Mixing the materials, and uniformly stirring to obtain a coating primer A with the viscosity of 20800mPa & s;
(5-2) preparation of face glue
The raw materials are proportioned according to the weight portion
High molecular weight polyether type waterproof moisture-permeable polyurethane resin: 100
Toluene: 20
Dimethylformamide: 12
Mixing the materials, and uniformly stirring to obtain a coating surface adhesive B with the viscosity of 6200mPa & s;
(5-3) coating treatment:
coating the fabric calendering surface obtained in the step (4) by using a floating knife type coating machine;
firstly, coating a primer A, baking for 80s at the temperature of 100-130 ℃ in an oven, and increasing the dry weight by 28g/m2；
Then, a surface adhesive B coating is carried out on the surface of the primer A coating, the baking oven temperature is 140-165 ℃, the baking is carried out for 45s, and the dry weight gain is 9g/m2And obtaining the product.
Example 5
(1) Fabric: 75D 150D240T gram weight 122 g/m2Polyester twill polyester peach skin;
(2) finishing the waterproof, oil-proof and antifouling fabric:
(2-1) preparing a waterproof, oil-proof and antifouling finishing agent: preparing a durable C6 fluorine-based water-proof oil-proof antifouling finishing agent, a water-based blocked isocyanate crosslinking agent and water into an aqueous solution of 80g/L durable C6 fluorine-based water-proof oil-proof antifouling finishing agent and 20g/L water-based blocked isocyanate crosslinking agent, and adjusting the pH value to 5 by using citric acid;
(2-2) padding and finishing the fabric: padding and finishing the fabric in the finishing liquid prepared in the step (2-1), wherein the padding rate is 50%, drying is carried out at the temperature of 140 ℃ and 120 ℃, and drying is carried out for 50s at the temperature of 180 ℃, so as to obtain the waterproof, oil-proof and antifouling fabric;
(3) sanding treatment: sanding the reverse side of the fabric subjected to the waterproof, oilproof and antifouling finishing in the step (2) on a sanding machine, wherein a No. 320 abrasive leather is adopted, the rotating speed of a sanding roller is 2000r/min, and the speed of the fabric is 25m/min, so that the fine and dense short-fiber sanded fabric is obtained;
(4) and (3) calendering treatment: calendering the sanded surface of the fabric obtained in the step (3), wherein the calendering temperature is 110 ℃, the pressure is 10MPa, and the fabric speed is 22 m/min;
(5) and (3) waterproof moisture-permeable coating treatment:
(5-1) primer preparation:
the raw materials are proportioned according to the weight portion
Trifunctional polyether type waterproof moisture-permeable polyurethane resin: 100
Isocyanate crosslinking agent: 1.5
Aziridine-modified isocyanate crosslinker: 1.5
Acid crosslinking accelerator: 1.3
Toluene: 10
Butanone: 5
Mixing the materials, and uniformly stirring to obtain a coating base glue A with the viscosity of 21300mPa & s;
(5-2) preparation of face glue
The raw materials are proportioned according to the weight portion
High molecular weight polyether type waterproof moisture-permeable polyurethane resin: 100
Toluene: 15
Dimethylformamide: 15
Mixing the materials, and uniformly stirring to obtain a coating surface adhesive B with the viscosity of 6550mPa & s;
(5-3) coating treatment:
coating the fabric calendering surface obtained in the step (4) by using a floating knife type coating machine;
firstly, coating a primer A, baking for 90s at the temperature of 100-130 ℃ in an oven, and increasing the dry weight by 30g/m2；
Then, a surface adhesive B coating is carried out on the surface of the primer A coating, the baking oven temperature is 140-165 ℃, the baking is carried out for 50s, and the dry weight gain is 10g/m2And obtaining the product.
In the above embodiment:
the durable C8 fluorine-based waterproof, oilproof and antifouling finishing agent is a product of Shanghai chemical company, and is named as FD-8;
the durable C6 fluorine-based waterproof, oilproof and antifouling finishing agent is a product of Tuona chemical Shanghai company, and is named CLEAN;
the water-based blocked isocyanate crosslinking agent is a product of Toona chemical Shanghai company, and is named as FBI.
The trifunctional polyether type waterproof moisture permeable polyurethane resin is a Liaoning sidereal fine chemical industry product of Limited, and is of a brand FS-5800;
the high molecular weight polyether type waterproof moisture permeable polyurethane resin is a Liaoning sidereal fine chemical industry product, and is provided with a brand FS-5811;
the isocyanate cross-linking agent is a Liaoning sidereal fine chemical product, and is marked by DF-897;
the acid crosslinking accelerant is a Liaoning sidereal fine chemical product, namely a brand DF-899;
the aziridine modified isocyanate cross-linking agent is a product of Jiangsu Kanglejia materials Limited company, and is of the brand HD-300;
the glacial acetic acid and the citric acid are commercially available products;
the butanone, the toluene and the dimethylformamide are commercial industrial solvents.
Comparative example 1
The same procedure as in example 1 was followed, but without sanding.
Comparative example 2
The same procedure as in example 2 was followed, but without sanding.
Comparative example 3
The same procedure as in example 3 was followed, but without sanding.
Comparative example 4
The commercially available 75D 260T polyester pongee (polyester) waterproof, oil-proof, antifouling, waterproof and moisture-permeable coating fabric.
Comparative example 5
The commercially available 70D 160D 196T taslon (nylon) waterproof, oil-proof, antifouling, waterproof and moisture-permeable coating fabric.
The results of the performance tests on the products of examples 1 to 5 and comparative examples 1 to 5 are shown in the following table.
TABLE 1-1
Tables 1 to 2
Moisture permeability: detecting according to GB/T12704.2-2009;
hydrostatic pressure: detecting according to GB/T4744-2013;
water pick-up grade: detecting according to GB/T4745-;
oil repellency: detecting according to GB/T19977-;
contamination resistance: detecting according to GB/T30159-2013;
the water washing method comprises the following steps: according to a GB/T8629-2017 washing program 4N, the drying program is A suspension drying;
appearance after washing: visual inspection is adopted.
As can be seen from the test data in table 1:
the fabric prepared by the products of examples 1-5 has water-proof, oil-proof and antifouling indexes which are higher than 3 grades at the beginning and after 5 times and 10 times of water washing, so the fabric has effective and good lasting water-proof, oil-proof and antifouling properties.
The initial hydrostatic pressure is more than 100kPa, the hydrostatic pressure is still kept more than 80kPa after 5 times of washing, the hydrostatic pressure can reach more than 60kPa after 10 times of washing, the hydrostatic pressure index is reduced less after multiple times of washing, heavy rain and heavy rain can be still prevented, the water impermeability is excellent, namely, the waterproof and rainproof performance is durable, and the requirement of the water impermeability and the protective performance of the product after multiple times of washing is met.
Moisture permeability index before washing and after washing for many times can reach 6000 g/(m)2D) above, the moisture permeability is high, the sweat of the human body can be timely discharged on the premise of meeting high waterproof performance, the internal environment is kept dry and comfortable, and the waterproof moisture permeability function is lasting and remarkable.
The indexes of the water-proof, oil-proof and antifouling in the comparative examples 1-5 are initial, and are slightly lower than 3 grades after partial washing, the phenomena of layering and foaming of the adhesive surface of the coating and the cloth surface mostly occur after washing, the hydrostatic pressure index is greatly reduced, the hydrostatic pressure is more than 10kPa after 5 times of washing, only 4-8kPa exists after 10 times of washing, the water impermeability is obviously reduced, the water resistance is greatly reduced, and the requirement on lasting rainproof performance cannot be met, namely, the water-proof, oil-proof, antifouling and waterproof moisture permeability cannot simultaneously meet the lasting protective performance.
In conclusion, the fabric obtained by the processing method of the invention meets the requirements of the fabric on lasting water resistance, oil resistance and antifouling performance, improves the bonding fastness of the waterproof moisture-permeable coating adhesive and the fabric, improves the hydrostatic pressure index of the fabric after washing, ensures the durability of the waterproof moisture-permeable function, and ensures that the fabric has excellent and lasting comprehensive water resistance, oil resistance, antifouling performance, water resistance and moisture permeability.
Claims (2)
1. A processing method of durable waterproof, oil-proof, antifouling, waterproof and moisture-permeable fabric is characterized by comprising the following steps:
(1) fabric: polyester and nylon woven fabric;
(2) finishing the waterproof, oil-proof and antifouling fabric: the durable fluorine-based waterproof, oil-proof and antifouling agent is adopted to carry out padding finishing on the fabric to obtain the waterproof, oil-proof and antifouling fabric, namely the waterproof, oil-proof and antifouling fabric
(2-1) preparing a waterproof, oil-proof and antifouling finishing agent: preparing a durable fluorine water-proof oil-proof antifouling finishing agent 50-80g/L and a water-based blocked isocyanate crosslinking agent 10-20g/L aqueous solution from the durable fluorine water-proof oil-proof antifouling finishing agent, the water-based blocked isocyanate crosslinking agent and water, and adjusting the pH value to 4-6 by using glacial acetic acid or citric acid;
the durable fluorine-based waterproof, oil-proof and antifouling finishing agent is a durable C8 fluorine-based waterproof, oil-proof and antifouling finishing agent or a durable C6 fluorine-based waterproof, oil-proof and antifouling finishing agent;
(2-2) padding and finishing the fabric: padding and finishing the fabric in the finishing liquid prepared in the step (2-1), fully penetrating the finishing liquid, drying the fabric at 120-140 ℃ with the rolling residual rate of 40-65%, and baking the fabric at 170-180 ℃ for 50-60 seconds to obtain the waterproof, oil-proof and antifouling fabric;
(3) sanding treatment: sanding the reverse side of the fabric subjected to the waterproof, oil-proof and antifouling finishing in the step (2) to obtain fine, dense and short velvet on the reverse side of the fabric;
(4) and (3) calendering treatment: calendering the ground rough surface of the fabric obtained in the step (3), wherein the calendering temperature is 100-120 ℃, the pressure is 9-11 MPa, and the fabric speed is 20-30 m/min;
(5) and (3) waterproof moisture-permeable coating treatment:
(5-1) primer preparation:
the raw materials are proportioned according to the weight portion
Trifunctional polyether type waterproof moisture-permeable polyurethane resin: 100
Isocyanate crosslinking agent: 1-1.5
Aziridine-modified isocyanate crosslinker: 1-2
Acid crosslinking accelerator: 1-1.5
Diluent agent: proper amount of
Uniformly mixing and stirring the materials, and adjusting the viscosity to 18000-22000 mPa & s by using a diluent to obtain a coating primer A;
(5-2) preparation of face glue
The raw materials are proportioned according to the weight portion
High molecular weight polyether type waterproof moisture-permeable polyurethane resin: 100
Diluent agent: proper amount of
Adjusting the viscosity of the polyether waterproof moisture-permeable polyurethane resin with large molecular weight to 6000-7000 mPas by using a diluent to obtain a coating surface adhesive B;
(5-3) coating treatment:
coating the fabric calendering surface obtained in the step (4) by using a floating knife type coating machine;
firstly, coating a primer A, baking for 60-90 s at the baking oven temperature of 100-130 ℃, and increasing the dry weight by 25-35 g/m2；
Then, a surface adhesive B coating is carried out on the surface of the primer A coating, the baking oven temperature is 140-165 ℃, the baking is carried out for 40-60 s, and the dry weight gain is 8-12 g/m2And obtaining the product.
2. The durable waterproof, oil-proof, antifouling, waterproof and moisture-permeable fabric obtained by the processing method according to the claim 1.
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