CN116427180A - Warp knitting velvet fabric and preparation method thereof - Google Patents

Abstract

The invention relates to the technical field of textiles, in particular to a warp-knitted fleece fabric and a preparation method thereof. Among them, a method for preparing warp-knitted velvet fabrics, the preparation process comprising: preparation of blended covered threads, weaving, sanding and finishing, blended covered threads are prepared by weaving to obtain gray cloth; gray cloth after sanding is treated with finishing liquid Finally, a silicon-oxygen film layer is formed on the gray cloth, which reduces the surface tension of the warp-knitted fleece fabric and makes the warp-knitted fleece fabric more supple. There is a good bonding strength between the covered threads. By introducing spandex yarn into the blended covered thread, the fluff of the blended covered thread with a silicone film layer is more densely stacked, which in turn makes the warp-knitted fleece fabric have excellent Waterproof performance and wear resistance.

Description

A kind of warp knitted fleece fabric and preparation method thereof

technical field

The invention relates to the technical field of textiles, in particular to a warp-knitted fleece fabric and a preparation method thereof.

Background technique

Warp knitting is a textile process belonging to the field of knitting, which is to use one or several groups of parallel yarns on the working needles of the warp feeding machine to form knitted fabrics at the same time; The extended fibers are broken to form plush; because the warp-knitted fleece fabric is soft, delicate, and has a unique texture, it is often used as a sofa release fabric, but the waterproofness of the warp-knitted fleece fabric is generally poor, and there are some spots on the surface of the warp-knitted fleece fabric. In the case of water, water can easily seep in and form stains.

Contents of the invention

In order to improve the problem of poor water resistance of existing warp-knitted fleece fabrics, the application provides a warp-knitted fleece fabric and a preparation method thereof.

In a first aspect, the application provides a method for preparing a warp-knitted fleece fabric, the preparation process of which is as follows:

Preparation of blended covered yarn: polyester fiber and reactive fiber with a mass ratio of 1: (0.5-1.5) are blended to prepare polyester blended yarn; then the polyester blended yarn is covered on spandex yarn by false twisting Processing and preparing to obtain a blended covered thread, wherein the mass ratio of the polyester blended yarn to the spandex yarn is (4-6):1;

Weaving: weaving the blended covered thread to form gray cloth, the warping tension of the blended covered thread is 1.4-1.8g/tex during weaving;

Sanding: Sanding one side of the gray cloth to make the surface of the gray cloth form plush;

Finishing: Use 60-80°C finishing solution to impregnate the sanded gray cloth for 2-4 hours, the liquor ratio is (8-10):1; drain the finishing solution after dipping, and place it at a temperature of 150-170°C Heating for 10-15 minutes, then washing, soaping, and drying to prepare warp-knitted fleece fabrics;

The raw materials of the finishing liquid include 2-5 parts of polymethylhydrogen siloxane, 2-3 parts of hydroxyl-terminated dimethyl hydroxy silicone oil, 0.2-0.5 parts of polyether modified polysiloxane, 4- 6 parts of alkylphenol polyoxyethylene ether, 0.06-0.1 part of Pt catalyst and 1000 parts of water.

By adopting the above technical scheme, the gray cloth is impregnated with the finishing liquid, and the finishing liquid spreads on the gray cloth and the fluff of the gray cloth, and the hydroxyl-terminated dimethyl hydroxy silicone oil and polymethylhydrogensiloxane react at high temperature, and the gray cloth and the fluff A silicone film layer is formed on the surface. The silicone film layer reduces the surface tension of the warp-knitted fleece fabric and makes the warp-knitted fleece fabric more supple. Polymethylhydrogen siloxane enhances the reaction between the silicone coating and the warp-knitted fleece fabric. It has good bonding strength, which makes the warp-knitted fleece fabric have excellent waterproof performance and wear resistance.

In addition, since polymethylhydrogensiloxane contains active hydrogen, the fabrics treated with polymethylhydrogensiloxane are prone to yellowing. In this application, hydroxyl-terminated dimethyl hydroxy silicone oil and polymethylhydrogensiloxane are used It can enhance the waterproofness, flexibility and abrasion resistance of warp-knitted fleece fabrics, and at the same time improve the yellowing problem of fabrics treated with polymethylhydrogensiloxane.

In this application, spandex yarn is used in the warp-knitted fleece fabric, and the tension of the blended covered thread during warping is set to 1.4-1.8g/tex, so that the prepared blended covered thread has a certain degree of elasticity, and the silicon oxide coating is attached. The fluff of the blended covered thread is denser, which further improves the waterproof performance and friction resistance of the warp knitted fleece fabric.

Preferably, the reactive fiber is one of wool, silk, viscose fiber, cotton fiber, hemp fiber and modal fiber.

By adopting the above technical scheme, the preferred reactive fiber is used in combination with the finishing solution, which enhances the bonding strength between the silicone film layer and the warp-knitted fleece fabric, making the warp-knitted fleece fabric have excellent friction resistance and waterproof performance.

Preferably, the dipping treatment includes the first dipping and the second dipping, the first dipping time is 1-2h, the second dipping time is 1-2h, and the gray cloth is statically soaked after the first dipping Set aside for 8-12min, and then carry out the second impregnation.

By adopting the above technical scheme, the amount of finishing liquid remaining on the warp-knitted fleece fabric is increased, the compactness of the silicone film layer is improved, and the friction resistance and softness of the warp-knitted fleece fabric are improved.

Preferably, the finishing liquid also includes 2-6 parts of leveling agent and 0.06-0.1 part of initiator, and the leveling agent is perfluorooctyl propyl acrylate, perfluorocyclohexyl methyl acrylate, acrylic acid one of the hydrocarbons.

By adopting the above technical scheme, the leveling agent is used in the finishing solution to improve the quality of the silicone film layer, and further, the waterproof performance and friction resistance of the warp-knitted fleece fabric are improved.

Preferably, the leveling agent is acrylic hydrocarbon.

By adopting the above technical scheme, compared with perfluorooctyl propyl acrylate and perfluorocyclohexyl methyl acrylate, acrylic hydrocarbons have shorter molecular chains and no macromolecular groups on the molecular chains, making it easier to strengthen the silicone film layer The leveling agent reacts to form a polymer network to improve the density of the silicone coating, and further improves the waterproof performance and friction resistance of the warp-knitted fleece fabric.

Preferably, the finishing solution further includes 0.4-0.8 parts of bentonite and 0.1-0.2 parts of PTFE micropowder.

By adopting the above technical scheme, bentonite is used in combination with PTFE micropowder, and bentonite improves the dispersibility of PTFE micropowder and enhances the strength of the film layer formed by the finishing solution, further improving the friction resistance and waterproof performance of the warp-knitted fleece fabric.

Preferably, the blended covered wire is treated with microcapsule impregnating liquid for 4-6 hours under the condition of ultrasonic 18-22KHz before weaving, the liquor ratio is 1:(8-10), and the temperature of the microcapsule impregnating liquid is 65 -85°C;

The preparation process of the microcapsule impregnating liquid: heat the raw material mixture to 60-70°C, emulsify and stir for 30-40min at a stirring speed of 4000-7000r/min; add 0.1-0.3 parts of hydrochloric acid, 60-70°C, react for 24-60h under the reaction stirring speed of 400-1000r/min, and prepare the microcapsule impregnation solution;

The raw material mixture comprises 2-4 parts of n-butyl stearate, 1-3 parts of sodium lauryl sulfate, 4-8 parts of tetrabutyl titanate, 70-76 parts of deionized water and 35-40 parts of ethanol.

Through the above technical scheme, microcapsules are introduced into the blended coated thread after treatment with the microcapsule impregnation solution, and the warp-knitted fleece fabric containing the microcapsules releases butyl stearate slowly during use, and the butyl stearate migrates to the warp-knitted yarn. The surface of the fabric further improves the waterproof performance of the warp-knitted fleece fabric, and enhances the water-resistant performance of the warp-knitted fleece fabric. At the same time, the microcapsules increase the elasticity of the knitted fleece fabric, thereby improving the friction resistance of the warp-knitted fleece fabric.

The finishing liquid is used in combination with the microcapsules, and the film layer formed by the finishing liquid enhances the strength of the microcapsules, and further improves the long-term waterproof performance and friction resistance of the warp-knitted fleece fabric.

Preferably, the raw material mixture also includes 3-6 parts of hydroxyl-terminated dimethyl hydroxy silicone oil.

Through the above technical scheme, part of the hydroxyl-terminated dimethyl hydroxy silicone oil is connected to the film layer of the microcapsules, so that the microcapsules have certain hydrophobic properties; Methyl hydroxy silicone oil is used in combination to migrate to the film layer formed by the finishing solution on the warp-knitted fleece fabric to further improve the waterproof and wear-resistant performance of the warp-knitted fleece fabric.

Preferably, the stirring speed during emulsification is 5000-6000r/min, the stirring speed after adding hydrochloric acid is 600-700r/min, the reaction temperature is 63-65°C, and the reaction time is 45-50h.

Through the above technical scheme, if the stirring speed is too fast during emulsification, there will be too many air bubbles in the microcapsule impregnating liquid, resulting in a decrease in the density of the microcapsules in the microcapsule impregnating liquid. The number of microcapsules is reduced; the stirring speed is too slow during emulsification, and the latex particle size in the microcapsule impregnation solution is too large, resulting in a decrease in the number of microcapsules immersed in the warp-knitted fleece fabric; the stirring speed after adding hydrochloric acid is too low, which may Adhesion will occur between the capsules, the particle size of the microcapsules will become larger, and the stirring speed after adding hydrochloric acid is too high, which may affect the film-forming of the microcapsules, resulting in insufficient strength of the prepared microcapsules, so that the warp-knitted fleece fabric after washing Water resistance deteriorates.

In the preparation process of microcapsule impregnating liquid, suitable stirring speed is compatible with suitable reaction time and reaction temperature, so that the prepared microcapsules have smaller particle size and higher strength, so that the warp-knitted fleece fabric has excellent waterproof performance Variable and wear resistance.

In a second aspect, the present application provides a warp-knitted fleece fabric.

A warp-knitted fleece fabric, prepared by any one of the warp-knitted fleece fabric preparation methods in the present application.

A kind of warp-knitted fleece fabric, which is not only soft, fine and unique in texture, but also has excellent friction resistance and waterproof performance. It is the preferred fabric for sofa fabrics.

In summary, the application has the following beneficial effects:

1. The preparation process of a warp-knitted velvet fabric comprises: preparation, weaving, sanding and finishing of the blended covered thread, wherein the blended covered thread is prepared by weaving to obtain a gray cloth; the sanded gray cloth is treated with a finishing solution, A silicone film layer is formed on the gray fabric, which reduces the surface tension of the warp-knitted fleece fabric and makes the warp-knitted fleece fabric more supple. By adding reactive fibers to the blended covering thread, the silicone film layer and the blended covering thread There is a good bonding strength between them. By introducing spandex yarn into the blended covering thread, the fluff of the blended covering thread with a silicone film layer is more densely stacked, so that the warp-knitted fleece fabric has excellent waterproof performance. and wear resistance.

2. Through the use of leveling agent, bentonite and PTFE micropowder in the finishing liquid, the compactness and wear resistance of the silicone film layer are synergistically enhanced, and the waterproof performance and friction resistance of the warp-knitted fleece fabric are further improved.

3. By using the microcapsule impregnating liquid to treat the blended coated thread, introducing microcapsules into the blended covered thread, the finishing liquid and the microcapsules are used together, the coating formed by the finishing liquid enhances the strength of the microcapsules, and the microcapsules make the warp knitted fleece The fabric has a certain degree of elasticity and slow-releases n-butyl stearate and hydroxyl-terminated dimethyl hydroxy silicone oil, which further enhances the waterproof performance and friction resistance of the warp-knitted fleece fabric.

Detailed ways

Preparation example of raw materials and/or intermediates Raw materials: PTFE micropowder (particle size 1-3μm), hydroxyl-terminated dimethyl hydroxy silicone oil (viscosity: 20-40mm2/s), polymethylhydrogensiloxane (viscosity: 10 -50mm2/s), PTFE powder (average particle size 5μm), bentonite (average particle size 13μm), spandex yarn (30±5D), polyester fiber (3.5D, 48mm), cotton fiber (39mm), viscose fiber ( 1.2D, 38mm), bamboo fiber (2.0D, 65mm).

Preparation Example 1

A kind of microcapsule dipping liquid, the raw material composition used is as table 1, and preparation steps are as follows:

The preparation process of the microcapsule impregnation solution: the raw material mixture is heated to 70°C, emulsified under the condition of a stirring speed of 4000r/min, and the emulsification stirring time is 30min; adding 226mL of hydrochloric acid solution with a mass fraction of 37.5%, (in the hydrochloric acid solution contains about 0.1kg of hydrochloric acid), reacted for 24 hours at a reaction temperature of 70°C and a stirring speed of 400r/min to prepare a microcapsule impregnation solution.

Among them, the density of hydrochloric acid solution with a mass fraction of 37% is 1.179g/cm ³ .

Preparation example 2-4

A microcapsule impregnating solution, the difference from Preparation Example 1 is that: the types of raw materials used in the microcapsule impregnating solution are different, and the preparation process of the microcapsule impregnating solution is different, as shown in Table 1 for details.

The kind of raw material that microcapsule impregnating liquid uses in table 1 preparation example 1-4, the setting list of the preparation process of microcapsule impregnating liquid

Preparation example 5-9

A microcapsule impregnating solution, the difference from Preparation Example 1 is that the preparation process of the microcapsule impregnating solution is different, as shown in Table 2.

Table 2 preparation example 5-9 and the preparation process setting list of microcapsule impregnating liquid in preparation example 1

distinguish Preparation Example 1 Preparation Example 5 Preparation Example 6 Preparation Example 7 Preparation example 8 Preparation Example 9 Stirring speed of emulsification/(r/min) 4000 5000 6000 7000 4000 7000 Stirring speed of reaction/(r/min) 400 700 600 1000 400 1000 Reaction temperature/℃ 70 65 63 60 65 63 Reaction time/h twenty four 45 50 60 45 50

Preparation Example 10

A kind of finishing liquid, its raw material composition is as table 3, and preparation steps are as follows:

After mixing the raw materials of the finishing liquid, the stirring time was 20 min under the condition of a stirring speed of 4000 r/min to prepare the finishing liquid.

Preparation Examples 11-14

The difference between a finishing solution and Preparation Example 1 lies in that the raw materials of the finishing solution are different, and the preparation process is different, as shown in Table 3 for details.

The raw material type of the finishing liquid of table 3 preparation example 10-14, the setting list of preparation process

Preparation Example 15

A finishing solution, the difference from Preparation Example 10 is that bentonite and PTFE micropowder are not used in the raw materials of the finishing solution.

Preparation Example 16

A finishing solution, which differs from Preparation Example 10 in that: bentonite, PTFE micropowder, perfluorooctyl propyl acrylate and azobisisobutyronitrile are not used in the raw materials of the finishing solution.

Example

Example 1

A kind of preparation method of warp-knitted fleece fabric, the raw material composition that adopts is as table 4-table 5, adopts following preparation steps:

Preparation of blended covered yarn: firstly, polyester fiber and reactive fiber with a mass ratio of 1:0.5 are blended to form polyester blended yarn; then, spandex yarn and polyester blended yarn are used to compound to form spandex yarn The center is covered on the spandex yarn, and the blended covered thread is prepared by false twisting.

Weaving: When the spandex covered yarn is warped on an ordinary long fiber warp knitting machine, the warping tension of the blended covered thread is 1.4g/tex during weaving; the blended covered thread is used for weaving with a 32G warp knitting machine The weave form of the warp-knitted fleece fabric is 10/12//, and a 200±10g/ ^m2 warp-knitted fleece blank is prepared.

Sanding: use the sanding device to sand one side of the gray cloth to form plush on the surface of the gray cloth. The sanding time is 3 seconds, and the number of sanding times is 2 times.

Finishing: impregnate the sanded gray cloth with the finishing liquid, the liquor ratio is 8:1, and soak for 2 hours at 60°C; after dipping, drain the finishing liquid and place it at 150°C for 15 minutes to react. Then, the warp-knitted fleece fabric is prepared after washing with water, soaping and drying.

Example 2-3

A method for preparing a warp-knitted fleece fabric differs from Example 1 in that the weight of the raw material used is set differently; the preparation process of the warp-knitted fleece fabric is set differently, as shown in Table 4.

The raw material weight that adopts in the embodiment 1-3 of table 4, the preparation process setting list of warp-knitted velvet fabric

distinguish Example 1 Example 2 Example 3 Polyester blended yarn/kg 40 50 60 Spandex yarn/kg 10 10 10 The mass ratio of polyester blended yarn to spandex yarn 4:1 5:1 6:1 Warping tension of blended covered yarn/(g/tex) 1.4 1.6 1.8 Grinding time/s 3 5 8 Sanding times/time 2 2 1 Finishing solution Preparation Example 10 Preparation Example 11 Preparation Example 12 bath ratio 8:1 9:1 10;1 Immersion temperature/℃ 60 70 80 Immersion time/h 4 3 2 Reaction temperature/℃ 150 160 170 Reaction time/min 15 12 10

Example 4-6

A method for preparing a warp-knitted fleece fabric differs from that of Example 1 in that the weight of the yarn used to prepare the polyester blended yarn is set differently, as shown in Table 5 for details.

The yarn weight list that polyester blended yarn adopts is prepared in table 5 embodiment 4-6 and embodiment 1

Example 7

A method for preparing a warp-knitted fleece fabric, the difference from Example 1 is that in the finishing step, the dipping treatment includes the first dipping and the second dipping, after the first dipping time is 1h, after leaving the bath for 8min , for the second 1h immersion.

Example 8

A preparation method of warp-knitted fleece fabric, the difference from Example 1 is that the soaking time is 4h.

Example 9

A preparation method of warp-knitted fleece fabric, the difference from Example 1 is that the dipping time is 4h, and the dipping is carried out twice, followed by the first dipping and the second dipping, after the first dipping time 2h, After leaving the bath to stand for 12 minutes, carry out the second immersion for 2 hours.

Examples 10-13

A method for preparing a warp-knitted fleece fabric, the difference from Example 1 is that the finishing liquid is sequentially used in Preparation Examples 13-16.

Example 14

A preparation method of warp-knitted fleece fabric, the difference from Example 1 is that the blended covered thread is dipped with the microcapsule dipping solution of Preparation Example 1 before weaving, the bath ratio is 1:8, and the dipping temperature is 65 ℃, impregnated for 6h under the condition of ultrasonic 22KHz.

Example 15-16

A method for preparing a warp-knitted fleece fabric differs from that of Example 14 in that the preparation of the microcapsule impregnation solution used is different, and the impregnation conditions are set differently, as shown in Table 6 for details.

The preparation example setting of the microcapsule impregnation liquid adopted in the embodiment 14-16 of table 6, the list of impregnation condition settings

Examples 17-22

A method for preparing a warp-knitted fleece fabric, which is different from that of Example 14 in that the microcapsule impregnation solutions of Preparation Examples 4-9 are sequentially used.

comparative example

Comparative example 1

A method for preparing a warp-knitted fleece fabric differs from that of Example 13 in that no finishing solution is used for dipping treatment.

Comparative example 2

A method for preparing a warp-knitted fleece fabric, the difference from Example 13 is that no wool is used in the polyester blended yarn and no polymethylhydrogensiloxane is used in the finishing solution.

Comparative example 3

A method for preparing a warp-knitted fleece fabric, the difference from Example 13 is that the polyester blended yarn does not use wool and the tension of the blended covered thread is 1.0 g/tex during warping.

performance test

Test 1: Waterproof performance test method: According to GB/T4744-2013 "Testing and Evaluation of Textile Waterproof Performance Hydrostatic Pressure Method", the hydrostatic pressure tester is used for measurement.

Washing method: wash in accordance with GB/T8629-2017 "Household Washing and Drying Procedures for Textile Testing".

Test 2: Abrasion resistance test method: use the model YG522N fabric abrasion tester to test, cut the warp-knitted fleece fabric into a disc with a diameter of 125mm as the sample to be tested, open a hole in the middle of the sample, and set up three samples for the test , the test results are averaged; the depilation rate test is carried out under standard atmospheric conditions by using the rotary flat grinding method; the sample is rubbed 500 times, and then according to the weight loss rate=(mass before rubbing-mass after rubbing)/mass before rubbing× 100% calculate the weight loss rate of the test fabric.

Test samples: the warp-knitted fleece fabrics prepared in Examples 1-22 were used as test samples, and the warp-knitted fleece fabrics prepared in Comparative Examples 1-3 were used as control samples.

Test result: the waterproof performance and the abrasion resistance of the warp-knitted fleece fabric that embodiment 1-22 and comparative example 1-3 prepare, test result is as shown in table 7:

Table 7 embodiment 1-22 and comparative example 1-3 prepare the waterproof performance and the abrasion resistance performance list of the warp-knitted fleece fabric

Can find out in conjunction with embodiment 1-22 and comparative example 1-3 and in conjunction with table 7:

The hydrostatic pressure (50-65Kpa) before washing of the warp-knitted fleece fabric prepared in Example 1-22 is higher than that of the warp-knitted fleece fabric prepared in Comparative Example 1-3 (39-48Kpa).

The hydrostatic pressure (46-62Kpa) after washing of the warp-knitted fleece fabric prepared in Example 1-22 is higher than the hydrostatic pressure (33-43Kpa) before washing of the warp-knitted fleece fabric prepared in Comparative Example 1-3.

The weight loss rate (0.46-0.61%) of the warp-knitted fleece fabric prepared in Example 1-22 is lower than that of the warp-knitted fleece fabric prepared in Comparative Example 1-3 (0.71-1.5%).

It shows that after the gray cloth obtained by spinning the blended covered thread is treated with the finishing liquid, a silicon oxide film layer is formed on the gray cloth, which reduces the surface tension of the warp-knitted fleece fabric and makes the warp-knitted fleece fabric more supple. The introduction of reactive fibers in the blended yarn enhances the bonding strength between the silicone film layer and the blended covered thread. By introducing spandex yarn into the blended covered thread, the fuzz with the silicone film layer of the blended covered thread is laminated. The tighter, so that the warp-knitted fleece fabric has excellent waterproof and wear-resistant properties; further, using leveling agent, bentonite and PTFE micropowder in the finishing liquid, and introducing microcapsules into the blended coated thread, to further enhance Waterproof performance and friction resistance of warp knitted fleece fabric.

The hydrostatic pressure of the warp-knitted fleece fabric that embodiment 7 prepares is higher than embodiment 1, and the weight loss rate is lower than embodiment 1; The hydrostatic pressure of the warp-knitted fleece fabric of embodiment 9 is higher than embodiment 8, and the weight loss rate is lower than In Example 8, it may be that the waterproof coating formed on the warp-knitted fleece fabric is more uniform and compact because the impregnation is performed twice, so that the warp-knitted fleece fabric has better waterproof performance and wear resistance.

The hydrostatic pressure of the warp-knitted fleece fabric that embodiment 10 prepares is higher than embodiment 1, and the weight loss rate is lower than embodiment 1; The hydrostatic pressure of the warp-knitted fleece fabric of embodiment 2 is higher than embodiment 11, and the weight loss rate is lower than Embodiment 11, probably because the molecular chain of the leveling agent of acrylic hydrocarbons is shorter, there is no large molecular group on the molecular chain, the macromolecule film layer that forms after leveling agent polymerization and polymethyl hydrogen siloxane and polymethyl hydrogen siloxane and The film layer formed by hydroxyl-terminated dimethyl hydroxy silicone oil has a better synergistic effect, which makes the film layer formed by the finishing solution tighter, thereby improving the waterproof performance and wear resistance of the warp-knitted fleece fabric.

The hydrostatic pressure of the warp-knitted fleece fabric that embodiment 12-13 prepares is lower than embodiment 1-11, and the weight loss rate is higher than embodiment 1-11, shows that bentonite, PTFE micropowder and perfluorooctyl propyl acrylate are compatible to use, make The warp-knitted fleece fabric has good waterproof performance and wear resistance, which may be because bentonite improves the dispersion performance of PTFE powder, and PTFE powder enhances the wear resistance of the film formed by the finishing solution. The waterproof performance and wear resistance of velvet fabric.

The hydrostatic pressure of the warp-knitted fleece fabric prepared in Examples 14-22 is higher than that of Examples 1-13, and the weight loss rate is lower than that of Examples 1-13, indicating that the blended coated thread is treated with a microcapsule impregnation solution before weaving to make The warp-knitted fleece fabric has good waterproof performance and wear resistance, which may be due to the slow-release effect of microcapsules. The slow-release n-butyl stearate is compatible with hydroxyl-terminated dimethyl hydroxy silicone oil, and migrates to The film layer formed by the finishing liquid on the knitted fleece fabric further improves the waterproof performance and wear resistance of the warp knitted fleece fabric.

This specific embodiment is only an explanation of this application, and it is not a limitation of this application. Those skilled in the art can make modifications to this embodiment without creative contribution according to needs after reading this specification, but as long as the rights of this application All claims are protected by patent law.

Claims (10)

1. The preparation method of the warp knitting pile fabric is characterized by comprising the following preparation processes:

preparation of a blended coated wire: the mass ratio is 1: blending the polyester fiber (0.5-1.5) and the reactive fiber to obtain a polyester blended yarn; and then coating the terylene blended yarn on the spandex yarn, and performing false twisting to prepare the blended coated yarn, wherein the mass ratio of the terylene blended yarn to the spandex yarn is (4-6): 1, a step of;

weaving: weaving the blended coating line to form grey cloth, wherein the warping tension of the blended coating line is 1.4-1.8g/tex during weaving;

roughening: roughening one surface of the grey cloth to form plush on the surface layer of the grey cloth;

and (3) finishing: soaking the ground grey cloth with finishing liquid at 60-80 deg.c for 2-4 hr in bath ratio of 8-10 to 1; draining the finishing liquid after soaking, heating at 150-170 ℃ for 10-15min, and then washing, soaping and drying to obtain the warp knitting wool fabric;

the raw materials of the finishing liquid comprise 2-5 parts of polymethylhydrosiloxane, 2-3 parts of hydroxyl end-capped dimethyl hydroxyl silicone oil, 0.2-0.5 part of polyether modified polysiloxane, 4-6 parts of alkylphenol ethoxylates, 0.06-0.1 part of Pt catalyst and 1000 parts of water.

2. The method for producing warp knitting pile fabric according to claim 1, wherein the reactive fiber is one of wool, silk, viscose, cotton, hemp and modal.

3. The method according to claim 1, wherein in the finishing step, the impregnation treatment comprises a first impregnation and a second impregnation, the first impregnation is performed for 1-2 hours, the second impregnation is performed for 1-2 hours, and the raw fabric is left to stand for 8-12 minutes after the first impregnation, and then the second impregnation is performed.

4. The method for preparing the warp knitting pile fabric according to claim 1, wherein the finishing liquid further comprises 2-6 parts of a leveling agent and 0.06-0.1 part of an initiator, and the leveling agent is one of perfluorooctyl propyl acrylate, perfluorocyclohexyl methyl acrylate and acrylic hydrocarbon.

5. The method for producing warp knitting pile fabric according to claim 4, wherein the leveling agent is acrylic hydrocarbon.

6. The method for producing warp knitting pile fabric according to claim 4, wherein the finishing liquid further comprises 0.4-0.8 parts of bentonite and 0.1-0.2 parts of PTFE micropowder.

7. The method for preparing the warp knitting pile fabric according to claim 1, which is characterized in that: the blended coating line is treated for 4-6 hours under the condition of ultrasonic 18-22KHz by using microcapsule impregnating solution before weaving, and the bath ratio is 1: (8-10), wherein the temperature of the microcapsule impregnating solution is 65-85 ℃;

the preparation process of the microcapsule impregnating solution comprises the following steps: heating the raw material mixed solution to 60-70 ℃, and emulsifying and stirring for 30-40min under the condition of stirring speed of 4000-7000 r/min; adding 0.1-0.3 part of hydrochloric acid, and reacting for 24-60 hours at the temperature of 60-70 ℃ and the reaction stirring speed of 400-1000r/min to prepare microcapsule impregnating solution;

the raw material mixed solution comprises 2-4 parts of n-butyl stearate, 1-3 parts of sodium dodecyl sulfate, 4-8 parts of tetrabutyl titanate, 70-76 parts of deionized water and 35-40 parts of ethanol.

8. The method for producing warp knitting pile fabric according to claim 7, characterized in that: the raw material mixed solution also comprises 3-6 parts of hydroxyl-terminated dimethyl hydroxyl silicone oil.

9. The method for producing warp knitting pile fabric according to claim 7, characterized in that: the stirring speed during emulsification is 5000-6000r/min, the reaction stirring speed is 600-700r/min, the reaction temperature is 63-65 ℃ and the reaction time is 45-50h.

10. The warp knitting velvet fabric is characterized in that: the warp-knitted pile fabric prepared by the method for preparing the warp-knitted pile fabric according to any one of claims 1 to 9.