CN109322166B - A kind of preparation method and application of windproof polyester fabric coating agent - Google Patents

Abstract

The invention relates to a preparation method and application of a windproof polyester fabric coating agent, which is characterized in that the wool keratin is extracted by dissolving waste wool with a solvent, and the wool keratin solution is mixed with acrylic acid, styrene, butyl acrylate and other monomers in an initiator The polyacrylate/wool keratin composite emulsion coating agent is prepared by polymerizing and emulsifying under the condition of an emulsifier; the coating agent prepared by the invention is used for coating and finishing polyester fabrics to obtain windproof coated polyester fabrics. The various indexes of the windproof coated polyester fabric are almost close to those of the purchased coated polyester fabric; among them, the windproof performance of the prepared coated polyester fabric is significantly higher than that of the purchased coated polyester fabric; the prepared coated polyester fabric has been washed 20 times After that, its indicators did not drop significantly, indicating that its stability and durability are very good. The windproof polyester fabric coating agent prepared by the invention has simple preparation process, cheap raw materials and broad application prospects.

Description

A kind of preparation method and application of windproof polyester fabric coating agent

technical field

The invention belongs to the technical field of windproof polyester fabrics, and in particular relates to a preparation method and application of a coating agent for windproof polyester fabrics.

Background technique

With the improvement of people's living standards, people have higher and higher requirements for clothing textiles. They hope that the clothes they wear have some special functions, such as: windproof, anti-ultraviolet and antibacterial properties. In addition, outdoor sports are becoming more and more popular now, and most outdoor clothing requires good windproof performance. Clothes made of polyester occupy a high proportion in the clothing field, because polyester has the advantages of low price, wide range of sources, durability, easy dyeing and good air permeability. Due to the characteristics of polyester's own structure, its windproof effect is poor and needs further improvement.

At present, there are many reports on the research on the windproof performance of fabrics. Among them, the windproof performance of fabrics adopts a multi-layer structure to achieve its windproof finishing. For example: Chinese Patent Application No. 201410683715.1 discloses a multi-layer elastic windproof fabric and its production method , the fabric has a three-layer structure, the surface layer is a woven fabric formed of cotton/spandex or polyester/cotton/spandex, the middle layer is a polyurethane resin film, and the inner layer is a knitted fabric formed of polyester or acrylic fiber; due to the complex structure of such composite fabrics , it is difficult to meet people's needs for wearing comfort and freedom of movement. In addition, during the spinning process of the fabric, it can also be considered from the perspective of yarn selection, so as to improve the windproof performance of the fabric, such as: Chinese Patent Application No. 201110270173.1 discloses a light and thin antistatic windproof fabric and its production method. Formed from chemical fiber filaments below 30 denier and conductive yarns from 40 to 75 denier; this patent has special requirements for raw material yarns, and yarns of other materials (such as: cotton yarn, ramie yarn, etc.) It may not be able to achieve its windproof effect. It can be seen that finding a more effective method to realize the windproof performance of fabrics is an urgent problem to be solved at present.

Fabric coating finishing refers to a surface finishing technology that uniformly coats one or more layers of polymer compounds on the surface or both sides of the fabric, so that the front and back sides of the fabric can produce different functions and appearances. The coated polymer compound is called textile coating finishing agent, referred to as coating agent. Coating finishing technology can give fabrics many functions, such as: waterproof, windproof, warm and antistatic. The literature survey shows that there are few reports on the application of coating finishing technology to the windproof finishing of polyester fabrics.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a preparation method and application of a windproof polyester fabric coating agent. Wool has a very good windproof and warm-keeping effect. Because of its particularly stable structure, it has not been developed and applied in the field of coating agents. The invention dissolves waste wool to extract wool keratin, and emulsifies the wool keratin solution with polyacrylic acid to obtain an emulsion. After finishing the emulsion coating on the polyester fabric, the polyester fabric has a good windproof effect. The preparation process of the windproof polyester fabric coating agent in the invention is simple, and the application prospect is broad.

A kind of preparation method of windproof polyester fabric coating agent of the present invention is characterized in that, described method comprises the steps:

(1) Selection of waste wool: select waste clothes or trouser belts made of wool, wash them with a cleaning agent for clothes, then wash them with a large amount of water, and dry them;

(2) Dissolution of waste wool: at 60-80°C, the wool treated in step (1) is dissolved in a mixed solution of tricarboxyethylphosphine and urea, wherein waste wool (g), tricarboxyethylphosphine ( mL) and urea (g) volume mass ratio is 1: 10 ~ 20: 1 ~ 2, the dissolution process is constantly stirred, the dissolution time is 4 ~ 6h, filter, concentrate to obtain wool keratin solution, the solid content of wool keratin solution 40-60%;

(3) Preparation of coating agent: take appropriate amount of wool keratin solution prepared in step (2), sodium dodecylbenzenesulfonate, octylphenol polyoxyethylene ether emulsifier, acrylic acid, styrene, butyl acrylate Esters and ammonium persulfate, etc., among them, wool keratin solution (ml), sodium dodecylbenzenesulfonate (g), octylphenol polyoxyethylene ether emulsifier (g), acrylic acid (mol), styrene (mol), butyl acrylate (mol) and ammonium persulfate (g) mass volume ratio is: 15～20: 0.5～1: 1～2: 0.1～0.2: 0.1～0.2: 0.1～0.2: 0.5～1 ; All wool keratin solution, sodium dodecylbenzenesulfonate, octylphenol polyoxyethylene ether emulsifier and acrylic acid, styrene, butyl acrylate and ammonium persulfate initiator accounting for 1/3 of the total amount Dissolve in an appropriate amount of deionized water, stir evenly, control the temperature at 75-85°C, and stir for 1-2 hours; then, dissolve the remaining 2/3 of the acrylic acid, styrene, butyl acrylate and ammonium persulfate initiator in an appropriate amount of deionized water Add ionized water dropwise to the mixed solution just stirred, and the dropping time is controlled within 2-3 hours. After the dropping is completed, keep warm for 2-3 hours. The emulsion is left for one month without stratification or precipitation. A polyacrylate/wool keratin emulsion coating agent is obtained, which is a windproof polyester fabric coating agent.

Another object of the present invention is to provide an application of the above-mentioned windproof polyester fabric coating agent, the specific scheme is: the fabric is tightened on the stretcher, wherein the fabric is suitable for polyester fabric, and the coating agent is applied with a scraper Spread evenly on the fabric with a dry weight of 30-35g/m ² , dry at 90°C for 3 minutes, and bake at 140-170°C for 5 minutes to obtain a coated polyester fabric.

The present invention has following salient features:

(1) The windproof polyester fabric coating agent prepared by the present invention contains wool keratin solution, and the combination of wool keratin solution and polyacrylate can play a complementary windproof effect. The invention successfully prepares wool keratin solution and polyacrylic acid into an emulsion through an emulsification method, and the emulsion is a qualified polyester fabric coating agent.

(2) After the coating agent prepared by the present invention is finished to the polyester fabric coating, the windproof performance of the coated polyester fabric is significantly improved than the coated polyester fabric purchased; after the coated polyester fabric is washed 10 times, its various indicators have no Significantly decreased, indicating that the stability and durability of the coated polyester fabric are better.

(3) The preparation process of the windproof polyester fabric coating agent prepared by the present invention is simple, the raw material is cheap, and has broad application prospects.

Detailed ways

The examples described below illustrate the invention in detail.

Example 1

In the present embodiment, a coating agent for windproof polyester fabric is prepared by the following method, comprising the steps of:

(1) Selection of waste wool: select waste clothes or trouser belts made of wool, wash them with a cleaning agent for clothes, then wash them with a large amount of water, and dry them;

(2) Dissolving of waste and old wool: at 60° C., the wool processed in step (1) is dissolved in a mixed solution of tricarboxyethyl phosphine and urea, wherein the amounts of waste and old wool, tricarboxyethyl phosphine and urea are respectively 5g, 50mL and 5g, the dissolution process was stirred continuously, the dissolution time was 4h, filtered and concentrated to obtain wool keratin solution, the solid content of wool keratin solution was 48.9%;

(3) Preparation of coating agent: Weigh 15ml of wool keratin solution prepared in step (2), 0.5g of sodium dodecylbenzenesulfonate, 1g of octylphenol polyoxyethylene ether emulsifier, 0.1mol of acrylic acid, Styrene 0.1mol, butyl acrylate 0.1mol and ammonium persulfate 0.5g; all the wool keratin solution, sodium dodecylbenzenesulfonate, octylphenol polyoxyethylene ether emulsifier and total amount 1/ Dissolve the acrylic acid, styrene, butyl acrylate and ammonium persulfate initiator in 300mL of deionized water, stir evenly, control the temperature at 80°C, and stir for 1h; then, the remaining 2/3 of the acrylic acid, styrene, acrylic acid Dissolve butyl ester and ammonium persulfate initiator in 80mL of deionized water and add it dropwise to the mixed solution just stirred. The dropping time is controlled at 2.5h. , the polyacrylate/wool keratin emulsion coating agent a can be prepared without delamination or precipitation;

The application of the above-mentioned polyacrylate/wool keratin emulsion coating agent a in this embodiment is as follows: tighten the polyester fabric on the stretcher, apply the coating agent evenly on the fabric with a scraper, and apply Measure the dry weight to 30.5g/m ² , dry at 90°C for 3 minutes, and bake at 140-150°C for 5 minutes to prepare coated polyester fabric a.

Example 2

In the present embodiment, a coating agent for windproof polyester fabric is prepared by the following method, comprising the steps of:

(1) Selection of waste wool: select waste clothes or trouser belts made of wool, wash them with a cleaning agent for clothes, then wash them with a large amount of water, and dry them;

(2) Dissolving of waste and old wool: at 60° C., the wool processed in step (1) is dissolved in a mixed solution of tricarboxyethyl phosphine and urea, wherein the amounts of waste and old wool, tricarboxyethyl phosphine and urea are respectively 5g, 75mL and 5g, the dissolution process was stirred continuously, the dissolution time was 4.5h, filtered and concentrated to obtain wool keratin solution, the solid content of wool keratin solution was 52.2%;

(3) Preparation of coating agent: Weigh 20ml of wool keratin solution prepared in step (2), 0.5g of sodium dodecylbenzenesulfonate, 1g of octylphenol polyoxyethylene ether emulsifier, 0.1mol of acrylic acid, Styrene 0.1mol, butyl acrylate 0.1mol and ammonium persulfate 0.5g; all the wool keratin solution, sodium dodecylbenzenesulfonate, octylphenol polyoxyethylene ether emulsifier and total amount 1/ 3. Dissolve the acrylic acid, styrene, butyl acrylate and ammonium persulfate initiator in 300mL deionized water, stir evenly, control the temperature at 80°C, and stir for 2 hours; then, the remaining 2/3 of the acrylic acid, styrene, butyl acrylate The ester and ammonium persulfate initiators were dissolved in 80mL deionized water and added dropwise to the mixed solution just stirred. The dropping time was controlled within 2 hours. The polyacrylate/wool keratin emulsion coating agent b can be obtained by delamination or precipitation;

The application of the above-mentioned polyacrylate/wool keratin emulsion coating agent b in this embodiment is as follows: tighten the polyester fabric on the stretcher, apply the coating agent evenly on the fabric with a scraper, and apply The measured dry weight was 32.3g/m ² , dried at 90°C for 3 minutes, and baked at 150-160°C for 5 minutes to prepare coated polyester fabric b.

Example 3

In the present embodiment, a coating agent for windproof polyester fabric is prepared by the following method, comprising the steps of:

(1) Selection of waste wool: select waste clothes or trouser belts made of wool, wash them with a cleaning agent for clothes, then wash them with a large amount of water, and dry them;

(2) Dissolving of waste and old wool: at 70°C, the wool processed in step (1) is dissolved in a mixed solution of tricarboxyethylphosphine and urea, wherein the amounts of waste and old wool, tricarboxyethylphosphine and urea are respectively 5g, 100mL and 5g, the dissolution process was stirred continuously, the dissolution time was 5h, filtered and concentrated to obtain wool keratin solution, the solid content of wool keratin solution was 57.8%;

(3) Preparation of coating agent: Weigh 18ml of wool keratin solution prepared in step (2), 0.6g of sodium dodecylbenzenesulfonate, 1.2g of octylphenol polyoxyethylene ether emulsifier, and 0.12mol of acrylic acid , styrene 0.12mol, butyl acrylate 0.12mol and ammonium persulfate 0.6g; all the wool keratin solution, sodium dodecylbenzenesulfonate, octylphenol polyoxyethylene ether emulsifier and the total amount of 1 /3 of acrylic acid, styrene, butyl acrylate and ammonium persulfate initiator were dissolved in 300mL of deionized water, stirred evenly, the temperature was controlled at 85°C, and stirred for 2h; then, the remaining 2/3 of acrylic acid, styrene, acrylic acid Butyl ester and ammonium persulfate initiators were dissolved in 80mL deionized water and added dropwise to the mixed solution just stirred. The dropping time was controlled at 3 hours. The polyacrylate/wool keratin emulsion coating agent c can be obtained after delamination or precipitation occurs;

The application of the polyacrylate/wool keratin emulsion coating agent c described above in this embodiment is as follows: the polyester fabric is tightened on the stretcher, and the coating agent is evenly coated on the fabric with a scraper, and then coated The measured dry weight was 34.4g/m ² , dried at 90°C for 3 minutes, and then baked at 140-150°C for 5 minutes to prepare coated polyester fabric c.

Example 4

In the present embodiment, a coating agent for windproof polyester fabric is prepared by the following method, comprising the steps of:

(1) Selection of waste wool: select waste clothes or trouser belts made of wool, wash them with a cleaning agent for clothes, then wash them with a large amount of water, and dry them;

(2) Dissolving of waste and old wool: at 60° C., the wool processed in step (1) is dissolved in a mixed solution of tricarboxyethyl phosphine and urea, wherein the amounts of waste and old wool, tricarboxyethyl phosphine and urea are respectively 5g, 90mL and 5g, the dissolution process was stirred continuously, the dissolution time was 4h, filtered and concentrated to obtain wool keratin solution, the solid content of wool keratin solution was 53.8%;

(3) Preparation of coating agent: Weigh 20ml of wool keratin solution prepared in step (2), 0.5g of sodium dodecylbenzenesulfonate, 1g of octylphenol polyoxyethylene ether emulsifier, 0.1mol of acrylic acid, Styrene 0.2mol, butyl acrylate 0.1mol and ammonium persulfate 0.5g; all wool keratin solution, sodium dodecylbenzenesulfonate, octanylphenol polyoxyethylene ether emulsifier and total amount 1/ 3. Dissolve the acrylic acid, styrene, butyl acrylate and ammonium persulfate initiator in 300mL deionized water, stir evenly, control the temperature at 78°C, and stir for 1.5h; then, the remaining 2/3 of the acrylic acid, styrene, acrylic acid Butyl ester and ammonium persulfate initiators were dissolved in 80mL deionized water and added dropwise to the mixed solution just stirred. The dropping time was controlled at 2 hours. The polyacrylate/wool keratin emulsion coating agent d can be prepared after delamination or precipitation occurs;

The application of the above-mentioned polyacrylate/wool keratin emulsion coating agent d in this embodiment is as follows: tighten the polyester fabric on the stretcher, apply the coating agent evenly on the fabric with a scraper, and apply The measured dry weight was 34.8g/m ² , dried at 90°C for 3 minutes, and baked at 160-165°C for 5 minutes to prepare coated polyester fabric d.

Performance example:

(1) Coating agent performance analysis: The coating agents a, b, c, and d prepared in Examples 1 to 4 were respectively tested for film-forming smoothness, film tensile properties and film water absorption. The test methods are as follows : (a) Film-forming smoothness test: Apply the emulsion evenly on a clean glass plate, form a film at a constant temperature of 30°C, and then bake it at 160°C for 3 minutes, observe the smoothness of the film, and check the softness by hand. (b) Film tensile performance test: cut the baked film into thin strips of about (30×3×1) mm, and stretch it on a strength tester. (c) Water absorption test of the film: weigh the baked film to a constant weight, then immerse it in water at 25°C for 24 hours, absorb the water droplets on the surface of the film, and weigh it. Water absorption rate of adhesive film (%)=(membrane mass after water absorption-dry film mass)/dry film mass×100. The purchased coating agent comes from Shandong Luke Chemical Co., Ltd., and the test results are shown in Table 1:

The coating agent prepared by the present invention of table 1 compares with the coating agent performance of purchasing

project Coating agent a Coating agent b Coating agent c Coating agent d Purchased coating agent film gloss Fewer fish scales No fish scales Fewer fish scales No fish scales Fewer fish scales Tensile strength/MPa 18.837 18.667 18.239 18.387 16.245 Elongation at break/% 756.3 773.5 783.5 792.3 623.5 Film water absorption/% 21.3 21.2 21.8 21.5 29.8

As can be seen from Table 1, the film-forming gloss of the coating agent a, b, c, d prepared by the present invention is less fish scale pattern or no fish scale pattern, which is slightly better than the coating agent purchased; its tensile strength is slightly higher Its elongation at break is slightly higher than that of the purchased coating agent; its film water absorption is lower than that of the purchased coating agent.

(2) Performance analysis of coated fabrics: The polyester fabrics finished with the coating agents prepared in Examples 1 to 4 were tested for glossiness, twist resistance and surface moisture resistance respectively. The glossiness is tested according to the standard of FZ/T 01097-2006 "Testing Method for Gloss of Fabric". The washing method shall be washed 10 times according to GB/T 8629-2001 "Household Washing and Drying Procedures for Textile Tests"; the twist resistance shall be tested according to the standard FZ/T 01052-1998 "Determination of Twist and Flex Resistance of Coated Fabrics" The surface moisture resistance is tested according to the standard GB/T4745-2012 "Testing and Evaluation of Waterproof Performance of Textiles". The windproof performance is evaluated by the air permeability test. The air permeability test method refers to the JIS1096 standard. ^The air flow through the area of 1cm2 in seconds, the value is directly read from the digital display of the measuring device, which is the air permeability. The purchased coated polyester fabric comes from Zhejiang Shenteng Coated Fabric Co., Ltd., and the test results are shown in Table 2:

The performance test result of the coated polyester fabric prepared by the present invention and the coated polyester fabric purchased in table 2

As can be seen from Table 2, after the polyester fabric is finished with the coating agent prepared by the present invention, the indicators of the coated polyester fabric are almost close to those of the purchased coated polyester fabric; wherein, the glossiness of the coated polyester fabric reaches more than 11 , which is almost as close as purchased polyester coated fabric. After the coated fabric was washed 10 times, its various indicators did not decrease significantly, especially the hand feeling did not harden, indicating that the stability and durability of the coated fabric were very good. The air permeability of the coated polyester fabric prepared by the present invention is between 0.75 and 0.95 cm ³ /cm ² ·s, which is significantly lower than that of the purchased coated polyester fabric. Comprehensive analysis shows that the fabric coating agent prepared by the present invention is A qualified coating agent for windproof polyester fabrics.

Claims (3)

1. a preparation method of windproof polyester fabric coating agent, is characterized in that, described method comprises the steps: (1) Selection of waste wool: select waste clothes or trouser belts made of wool, wash them with a cleaning agent for clothes, then wash them with a large amount of water, and dry them; (2) Dissolution of waste wool: Dissolve the wool treated in step (1) in the mixed solution of tricarboxyethylphosphine and urea at 60-80°C, stir continuously during the dissolution process, and the dissolution time is 4-6h, filter, Concentrate to obtain wool keratin solution; the volume-to-mass ratio of waste wool (g), tricarboxyethylphosphine (mL) and urea (g) is: 1:10～20:1～2; (3) Preparation of coating agent: Weigh wool keratin solution prepared in step (2), sodium dodecylbenzenesulfonate, octylphenol polyoxyethylene ether emulsifier, acrylic acid, styrene, butyl acrylate and ammonium persulfate; the wool keratin solution (mL), sodium dodecylbenzene sulfonate (g), octylphenol polyoxyethylene ether emulsifier (g), acrylic acid (mol), styrene (mol ), butyl acrylate (mol) and ammonium persulfate (g) volume mass ratio is: 15～20: 0.5～1: 1～2: 0.1～0.2: 0.1～0.2: 0.1～0.2: 0.5～1; All the wool keratin solution, sodium dodecylbenzenesulfonate, octylphenol polyoxyethylene ether emulsifier and 1/3 of the total amount of acrylic acid, styrene, butyl acrylate and ammonium persulfate initiator were dissolved in Stir evenly in deionized water, control the temperature at 75-85°C, and stir for 1-2 hours; then, dissolve the remaining 2/3 of the acrylic acid, styrene, butyl acrylate and ammonium persulfate initiator in deionized water and add dropwise To the mixed solution just stirred, the dropping time is controlled within 2-3 hours. After the dropping is completed, keep warm for 2-3 hours. The emulsion can be left for one month, and the polyacrylate can be prepared without stratification or precipitation. / Wool Keratin Emulsion Coating Agent. 2. The preparation method of a coating agent for windproof polyester fabric according to claim 1, characterized in that: the solid content of the wool keratin solution in the step (2) is 40% to 60%. 3. an application utilizing the windproof polyester fabric coating agent according to claim 1, is characterized in that, the application method is: the polyester fabric is tightened on the stretcher, and the coating agent is evenly coated with a scraper on the On the fabric, dry at 90°C for 3 minutes, and bake at 140-170°C for 5 minutes to obtain a coated fabric with a coating weight of 30-35g/m ² .