CN105274844B - A method for improving the formulation of adhesive for sizing by utilizing polyurethane and ethylene glycol phenyl ether - Google Patents

Abstract

Improve the method for sizing adhesive formula the present invention relates to a kind of utilization ethylene glycol phenyl ether and polyurethane, belong to textile processing field.Described method refers to add polyurethane and ethylene glycol phenyl ether in the sizing adhesive formula of phosphate ester starch, acrylate and water, wherein, phosphate ester starch quality is the 3 5% of sizing adhesive gross mass, acrylate quality is the 3 5% of sizing adhesive gross mass, polyurethane quality is the 0.1 1% of sizing adhesive gross mass, and ethylene glycol phenyl ether quality is the 0.1 2% of sizing adhesive gross mass.Polyurethane and ethylene glycol phenyl ether are added in the mixing sizing adhesive of phosphate ester starch and solid propenoic acid ester, the permeability of mixing sizing adhesive and the covering property of yam surface sizing adhesive can be obviously improved, so as to improve the performance of serous coat.

Description

A method for improving the formulation of adhesive for sizing by utilizing polyurethane and ethylene glycol phenyl ether

technical field

The invention relates to a method for improving the formula of an adhesive for sizing by using polyurethane and ethylene glycol phenyl ether, which belongs to the technical field of textile processing.

Background technique

During weaving, the effect of the warp yarn on the heald frame will produce about 4000 reciprocating motions during the process from the warp beam to the fell. In this process, the role of the binder that protects the performance of the warp is to increase the strength and reduce hairiness. The three types of adhesives commonly used in the textile processing industry are: starch, acrylic and polyvinyl alcohol. The properties of the binder play an important role in the properties of the warp after padding the binder. Therefore, in order to protect the warp yarn, the warp yarn is padded with adhesive. The adhesive protects the warp yarn mainly from two aspects: one is that the adhesive penetrates into the yarn, increases the cohesion between fibers, and forms a soaked layer. , improve the breaking strength and elongation of the warp; the second is that the adhesive coats the surface of the yarn to cover the hairiness to form a coating layer and improve the wear resistance of the warp. Such as the Chinese publication "Macromolecular Materials Science and Engineering", the publication date is August 2009, the title of the article is the texture structure and performance of the phosphate starch/polyacrylate blend film. Supplemented with polyacrylate size to improve the flexibility of the size film, the disadvantage is that only phosphate starch supplemented with acrylic polyacrylate to improve the flexibility of the size film still cannot meet the requirements of the warp yarn during weaving. The requirements of surface size film flexibility, such as the Chinese publication "Cotton Textile Technology", the date of publication in November 2010, the title of the article is the study of maleic anhydride esterified acrylate grafted starch size, and this document introduces a The method of utilizing maleic anhydride to esterify acrylate grafted starch to improve the flexibility of the size film has the disadvantages that the starch grafting process is long, time-consuming, and energy-consuming, such as Chinese Patent Publication No. CN102329437A, disclosed On January 25, 2012, the name of the invention was a degradable starch composite slurry. The application disclosed a slurry compounded with plant starch, acetylated distarch phosphate, polyacrylic acid, starch and PVA. The disadvantage is that although the toughness of the size film is increased, the PVA cannot be degraded quickly after desizing and pollutes the environment. Such as China's public publication "Cotton Textile Technology", the publication date was July 2012, and the title of the article is the modification of water-based polyurethane to starch size. This document has explained that adding water-based polyurethane components to starch size can make adhesion The strength is improved and the mechanical properties of the size film are improved. The disadvantage is that the improvement of the performance of the size film by adding water-based polyurethane can not satisfy the adhesion of the size to the yarn. Chinese Patent Publication No. CN103923297A, published on July 16, 2014, the name of the invention is a kind of water-based polyurethane for toughening starch size film and its preparation method and application. The toughened polyurethane synthesis method solves the hard and brittle characteristics of the starch film after starch sizing and film formation. Due to the use of polyurethane, the adhesion performance of the mixed slurry of starch and polyurethane to fibers is improved. The disadvantage of the disclosed polyurethane is that it is mainly The applicable object is acid-thinned starch, and the adhesive performance of the mixed slurry of starch and polyurethane in this technical proposal is slightly improved.

Contents of the invention

For above-mentioned existing problem, the object of the present invention is to provide a kind of method that utilizes polyurethane and ethylene glycol phenyl ether to improve the adhesive formula for sizing, in order to realize above-mentioned purpose, its technical solution is:

A method for improving the adhesive formula for sizing by utilizing polyurethane and ethylene glycol phenyl ether, comprising the adhesive formula for sizing composed of phosphate starch, acrylate and water components and stirring and heating after turning on the power supply , the heating temperature range is 95-100°C, and the heating time is 1 hour, which includes two steps: the first step is stirring, and the stirring time is 20 minutes; the second step is heat preservation, and the heat preservation time is 40 minutes. The range of agitation speed is 200-400 rev/min to make the adhesive for sizing, said method refers to adding polyurethane and ethylene glycol in the adhesive formulation for sizing of phosphate starch, acrylate and water Phenyl ether, wherein, the quality of phosphate starch is 3-5% of the total mass of phosphate starch, acrylate, polyurethane, ethylene glycol phenyl ether and water, and the quality of acrylate is phosphate starch, acrylate, polyurethane, ethylene glycol 3-5% of the total mass of phenylene ether and water, the mass of polyurethane is 0.1-1% of the total mass of phosphate starch, acrylate, polyurethane, ethylene glycol phenyl ether and water, the mass of ethylene glycol phenyl ether is phosphate starch, 0.1-2% of the total mass of acrylate, polyurethane, ethylene glycol phenyl ether and water.

The polyurethane is biodegradable waterborne polyurethane.

Due to the adoption of the above technical scheme, the molecular structure of ethylene glycol phenyl ether added to the adhesive for sizing has hydroxyl groups and ether bonds, and has good affinity for phosphate starch and acrylate. The ether bonds in ethylene glycol phenyl ether form hydrogen bonds with the ester bonds in phosphate starch and the ester bonds in acrylate, and the hydroxyl groups in ethylene glycol phenyl ether and the hydroxyl groups of phosphate starch can also form hydrogen bonds. The hydrogen bond formed by the ethylene glycol phenyl ether can make the phosphate ester starch molecules and the acrylate molecules can be better blended in the solution, and the film structure formed by the liquid of the adhesive is optimized and the viscosity is stable. Polyurethane has good bonding properties and can bond the fibers inside the yarn. Polyurethane mainly realizes the adhesion between phosphate starch and fiber and between polyurethane and fiber. Since the ester bond in polyurethane and the ester bond in phosphate starch have a very good force, it is better than that of simple raw material. Starch or acid-thinned starch has better affinity, so the principle of improving the adhesive for sizing in this technical scheme is not a simple mixing of polyurethane and phosphate starch, but the use of hydrogen bonds formed between ester bonds, ethylene glycol The hydroxyl group in the alcohol phenyl ether and the hydroxyl group of the phosphate starch can also form a hydrogen bond and the interaction between the phosphate starch, ethylene glycol phenyl ether and polyurethane on the fiber, and finally achieve the effect of using the adhesive more Good sizing effect. The distribution form of sizing adhesive on the yarn is divided into two types, that is, coating and impregnation. The penetration rate shows the ability of the sizing adhesive to enter the interior of the yarn, and the coverage reflects the ability of the sizing adhesive to penetrate into the yarn. Protective properties for yarns. The binder for sizing treated by the process can well increase the cohesion force between fibers and improve the strength and stretch retention of yarn. In the process of processing the yarn, it can better wrap the surface of the yarn, thereby improving the coverage of the yarn. The surface hairiness of the yarn can be better protected during the friction between the yarns.

detailed description

A method for improving the adhesive formula for sizing by utilizing polyurethane and ethylene glycol phenyl ether, comprising the adhesive formula for sizing composed of phosphate starch, acrylate and water components and stirring and heating after turning on the power supply , the heating temperature range is 95-100°C, and the heating time is 1 hour, which includes two steps: the first step is stirring, and the stirring time is 20 minutes; the second step is heat preservation, and the heat preservation time is 40 minutes. The range of agitation speed is 200-400 rev/min to make the adhesive for sizing, said method refers to adding polyurethane and ethylene glycol in the adhesive formulation for sizing of phosphate starch, acrylate and water Phenyl ether, wherein, the quality of phosphate starch is 3-5% of the total mass of phosphate starch, acrylate, polyurethane, ethylene glycol phenyl ether and water, and the quality of acrylate is phosphate starch, acrylate, polyurethane, ethylene glycol 3-5% of the total mass of phenylene ether and water, the mass of polyurethane is 0.1-1% of the total mass of phosphate starch, acrylate, polyurethane, ethylene glycol phenyl ether and water, the mass of ethylene glycol phenyl ether is phosphate starch, 0.1-2% of the total mass of acrylate, polyurethane, ethylene glycol phenyl ether and water.

The polyurethane is biodegradable waterborne polyurethane.

Follow the above method.

Example 1

Accurately weigh 30g of phosphate starch and 30g of acrylate solid slurry with an electronic balance and place them at the bottom of a 1L container. At the same time, weigh 1g of polyurethane and 1g of ethylene glycol phenyl ether into the container, add water to the container, and make the phosphate starch , the total weight of acrylate, polyurethane, ethylene glycol phenyl ether and water reaches 1kg, stir the solution evenly, heat the container in a water bath at 100°C, and use a stirrer to stir the mixed solution in the container at the same time, the stirring speed Set at 300 rpm, stir for 20 minutes, stop stirring when the adhesive is completely gelatinized, seal the container with a film, and continue to cook the slurry in a water bath at 95-100°C for 40 minutes. Prepare an improved sizing adhesive, wind the prepared cotton roving on a special sizing frame, immerse the sizing frame in the adhesive for sizing, take it out after 5 minutes, and place it at 80°C Dry in the oven for 30 minutes.

Example 2

Accurately weigh 50g of phosphate starch and 50g of acrylate solid slurry with an electronic balance and place them at the bottom of a 1L container. At the same time, weigh 10g of polyurethane and 20g of ethylene glycol phenyl ether solution into the container, add water to the container, and make the phosphate The total weight of starch, acrylate, polyurethane, ethylene glycol phenyl ether and water reaches 1kg. Stir the solution evenly, heat the container in a water bath at 100°C, and use a stirrer to stir the mixed solution in the container. Set the speed at 300 rpm, stir for 20 minutes, stop stirring when the adhesive is completely gelatinized, seal the container with a film, and continue to cook the slurry in a water bath at 95-100°C for 40 minutes. Prepare an improved sizing adhesive, wind the prepared cotton roving on a special sizing frame, immerse the sizing frame in the adhesive for sizing, take it out after 5 minutes, and place it at 80°C Dry in the oven for 30 minutes.

Example 3

Use an electronic balance to accurately weigh 40g of phosphate starch and 40g of acrylate solid slurry and place them at the bottom of a 1L container. At the same time, weigh 5g of polyurethane and 10g of ethylene glycol phenyl ether solution into the container, add water to the container, and make the phosphate The total weight of starch, acrylate, polyurethane, ethylene glycol phenyl ether and water reaches 1kg. Stir the solution evenly, heat the container in a water bath at 100°C, and use a stirrer to stir the mixed solution in the container. Set the speed at 300 rpm, stir for 20 minutes, stop stirring when the adhesive is completely gelatinized, seal the container with a film, and continue to cook the slurry in a water bath at 95-100°C for 40 minutes. Prepare an improved sizing adhesive, wind the prepared cotton roving on a special sizing frame, immerse the sizing frame in the adhesive for sizing, take it out after 5 minutes, and place it at 80°C Dry in the oven for 30 minutes.

For comparing the technical advantages of this technical solution, accurately weigh 40g phosphate starch and 40g acrylate solid slurry with an electronic balance and place it at the bottom of a 1L container, add water to the container to make the total weight of phosphate starch, acrylate and water reach 1kg, stir the solution evenly, heat the container in a water bath at 100°C, and at the same time use a stirrer to stir the mixed solution in the container, set the stirring speed to 300 rpm, stir for 20 minutes, when the adhesive After complete gelatinization, stop stirring, seal the container with a film, and continue to boil the slurry for 40 minutes in a water bath at 95-100°C. Afterwards, the prepared cotton roving is wound on a special sizing frame, and the sizing frame is immersed in the binder for sizing, taken out after 5 minutes, and placed in an oven at 80°C for 30 minutes to dry. The prepared samples were taken as they were. Example 1, Example 2, Example 3 and the original roving samples were placed in a constant temperature and humidity environment for 24 hours at a temperature of 20° C. and a humidity of 65%. Then the sample was subjected to a tensile fracture test, the clamping distance of the sample was 5 cm, and the tensile speed was 50 mm/min. The data obtained are shown in Table 1:

Table 1 Adhesion values and elongation of sized roving samples

sample Adhesion value/N Elongation/% as it is 45.03±3.68 8.01±0.90 Example 1 65.46±4.29 8.69±0.39 Example 2 78.27±5.98 10.47±0.44 Example 3 71.23±6.67 9.50±0.43

Claims (2)

1. a kind of method that utilization polyurethane and ethylene glycol phenyl ether improve sizing adhesive formula, including by phosphate ester starch, Sizing adhesive formula and stir and heat through switching on power that acrylate and water component are constituted, heating temperature range is 95-100 DEG C, the time of heating is 1 hour, wherein including two steps：The first step is stirring, and the time of stirring is 20 minutes； Second step is insulation, and the time of insulation is 40 minutes, and mixing speed is the 200-400 revs/min of sizing being made adhesive, its It is characterised by：Described method refers to sizing in phosphate ester starch, acrylate and water with adding poly- ammonia in adhesive formula Ester and ethylene glycol phenyl ether, wherein, phosphate ester starch quality is phosphate ester starch, acrylate, polyurethane, ethylene glycol phenyl ether and water The 3-5% of gross mass, acrylate quality is phosphate ester starch, acrylate, polyurethane, ethylene glycol phenyl ether and water gross mass 3-5%, polyurethane quality is the 0.1-1% of phosphate ester starch, acrylate, polyurethane, ethylene glycol phenyl ether and water gross mass, second two Alcohol phenylate quality is the 0.1-2% of phosphate ester starch, acrylate, polyurethane, ethylene glycol phenyl ether and water gross mass.

2. a kind of utilization polyurethane according to claim 1 and ethylene glycol phenyl ether improve the method for adhesive formula, it is special Levy and be：Described polyurethane is biodegradable aqueous polyurethane.