阅读说明：本技术 一种快速干燥型交联聚丙烯酸类纺织浆料及其制备方法 (Quick-drying type crosslinked polyacrylic acid textile size and preparation method thereof ) 是由 武海良 马建华 沈艳琴 张苗苗 王耀武 李新玥 于 2019-10-11 设计创作，主要内容包括：本发明涉及一种快速干燥型交联聚丙烯酸类纺织浆料及其制备方法,该浆料由以下组份组成,丙烯酸酯18～25％,甲基丙烯酸甲酯4～6％、甲基丙烯酸2～4％、交联剂1～3％、过硫酸铵0.1～0.2％、十二烷基硫酸钠0.2～0.3％、烷基酚聚氧乙烯醚0.6～0.8％、碳酸氢钠0.05～0.1％、氨水2～3％和去离子水60～70％,以上各组分的含量之和为100％。丙烯酸酯类作为主要单体,过硫酸铵作为引发剂、十二烷基硫酸钠和烷基酚聚氧乙烯醚作为复配乳化剂,交联剂实现单体聚合过程中的化学交联,通过单体预乳化和种子乳液聚合合成快速干燥型交联聚丙烯酸类纺织浆料；其粒子细腻,平均粒径小,粘度为3～5mPa·s。(The invention relates to a quick-drying cross-linked polyacrylic acid textile size and a preparation method thereof, wherein the size comprises 18-25% of acrylate, 4-6% of methyl methacrylate, 2-4% of methacrylic acid, 1-3% of a cross-linking agent, 0.1-0.2% of ammonium persulfate, 0.2-0.3% of sodium dodecyl sulfate, 0.6-0.8% of alkylphenol polyoxyethylene, 0.05-0.1% of sodium bicarbonate, 2-3% of ammonia water and 60-70% of deionized water, and the sum of the contents of the components is 100%. Acrylic ester is used as a main monomer, ammonium persulfate is used as an initiator, sodium dodecyl sulfate and alkylphenol polyoxyethylene are used as a compound emulsifier, a cross-linking agent realizes chemical cross-linking in the monomer polymerization process, and the quick-drying cross-linked polyacrylic acid textile size is synthesized by monomer pre-emulsification and seed emulsion polymerization; the particles are fine and smooth, the average particle size is small, and the viscosity is 3-5 mPa & s.)

1. A quick-drying type crosslinked polyacrylic acid textile size is characterized in that: the sizing agent comprises 18-25% of acrylate, 4-6% of methyl methacrylate, 2-4% of methacrylic acid, 1-3% of a cross-linking agent, 0.1-0.2% of ammonium persulfate, 0.2-0.3% of sodium dodecyl sulfate, 0.6-0.8% of alkylphenol polyoxyethylene, 0.05-0.1% of sodium bicarbonate, 2-3% of ammonia water and 60-70% of deionized water, wherein the sum of the contents of the components is 100%.

2. The quick drying crosslinked polyacrylic textile size according to claim 1, characterized in that: the acrylate is one or more of methyl acrylate, ethyl acrylate and butyl acrylate.

3. The quick drying crosslinked polyacrylic textile size according to claim 1, characterized in that: the cross-linking agent is one or more of Glycidyl Methacrylate (GMA), N-hydroxymethyl acrylamide (N-MA) and Ethylene Glycol Dimethacrylate (EGDMA).

4. A preparation method of a quick-drying type crosslinked polyacrylic acid textile size, which is based on the quick-drying type crosslinked polyacrylic acid textile size of claim 1, and the preparation method is implemented according to the following steps:

step 1, weighing 18-25% of acrylic ester, 4-6% of methyl methacrylate, 2-4% of methacrylic acid, 1-3% of a cross-linking agent, 0.1-0.2% of ammonium persulfate, 0.2-0.3% of sodium dodecyl sulfate, 0.6-0.8% of alkylphenol polyoxyethylene, 0.05-0.10% of sodium bicarbonate, 2-3% of ammonia water and 60-70% of deionized water, wherein the sum of the mass of the components is 100%;

step 2, 5 parts of lauryl sodium sulfate, 5 parts of alkylphenol ethoxylates and 5 parts of deionized water in the step 1 are uniformly distributed;

step 3, adding 1 part of sodium dodecyl sulfate, 1 part of alkylphenol polyoxyethylene and sodium bicarbonate into 1 part of deionized water, and stirring until the sodium dodecyl sulfate, the alkylphenol polyoxyethylene and the sodium bicarbonate are completely dissolved to serve as a kettle bottom solution;

step 4, taking 1 part of deionized water, adding ammonium persulfate, and stirring until the ammonium persulfate is completely dissolved to obtain an initiator aqueous solution;

step 5, mixing the acrylic ester, the methyl methacrylate, the methacrylic acid, the cross-linking agent, the rest 4 parts of sodium dodecyl sulfate, 4 parts of alkylphenol ethoxylates and 3 parts of deionized water, and emulsifying at a high speed to obtain a white pre-emulsion;

step 6, sequentially adding and mixing the kettle bottom liquid prepared in the step 3, the aqueous solution of the initiator with the total mass of 20% prepared in the step 4 and the pre-emulsion with the total mass of 20% prepared in the step 5, stirring and heating until the temperature is 75-80 ℃, and reacting to prepare seed emulsion;

step 7, simultaneously dropwise adding the initiator aqueous solution accounting for 80% of the residual total mass and the pre-emulsion accounting for 80% of the residual total mass into the seed emulsion while stirring at the temperature of 75-80 ℃, heating to 85 ℃ after dropwise adding, and preserving heat; and (3) cooling to 40-45 ℃, adding the ammonia water weighed in the step (1), adjusting the pH value, stirring again, filtering and discharging to obtain the textile size.

5. The method for preparing the quick-drying textile size according to claim 4, wherein the stirring speed in the step 6 is 200-250 r/min; the reaction time is 30-40 min.

6. The preparation method of the quick-drying textile size as claimed in claim 4, wherein the dripping time in the step 7 is 2-2.5 h, and the heat preservation time is 1.5-2 h.

7. The method for preparing the quick-drying textile size according to claim 4, wherein the pH value in the step 7 is 6-7; the secondary stirring time is 30-40 min, and the secondary stirring speed is 200-250 r/min.

8. The method for preparing the quick-drying textile size according to claim 4, wherein the acrylate in the step 1 is one or more of methyl acrylate, ethyl acrylate and butyl acrylate.

9. The method for preparing the quick-drying textile size according to claim 4, wherein the cross-linking agent in the step 1 is one or more of Glycidyl Methacrylate (GMA), N-methylolacrylamide (N-MA) and Ethylene Glycol Dimethacrylate (EGDMA).

Technical Field

The invention belongs to the technical field of textile size, and relates to a quick-drying type crosslinked polyacrylic acid textile size and a preparation method of the quick-drying type crosslinked polyacrylic acid textile size.

Background

The warp needs to be sized before weaving, so that the warp can withstand the repeated friction action of a dropper, a heddle, a reed, adjacent yarns and the like during weaving, and good warp sizing is an important prerequisite for normal operation of a loom, improvement of efficiency and guarantee of product quality. The heat energy consumed by sizing accounts for 50% of the heat energy consumption of cotton textile plants, and the air consumption of the sizing process is a main factor of the sizing cost, so that the reduction of the sizing heat energy consumption is an important technical problem to be solved urgently in the textile industry.

The heat energy required during slashing comprises heat energy consumed by slashing during slashing and heat energy consumed in the drying process of the slashing machine, wherein the heat energy consumed by slashing accounts for about 20-30% of the heat energy consumption of slashing, the temperature of a slashing barrel is reduced at present, and remarkable effect is achieved in medium-low temperature slashing; the heat energy consumed by drying accounts for 70-80% of the whole slashing energy consumption, and is the main body of the slashing heat energy consumption, and a plurality of technical problems still exist in the prior art of realizing the obvious reduction of the slashing energy consumption through the design of the quick-drying size.

Disclosure of Invention

The invention aims to provide a quick-drying type crosslinked polyacrylic acid textile size, and the size can shorten the slashing drying time and improve the drying efficiency.

The invention also aims to provide a preparation method of the quick-drying crosslinked polyacrylic acid textile size.

The first technical scheme adopted by the invention is as follows: a fast-drying cross-linked polyacrylic acid textile size comprises 18-25% of acrylic ester, 4-6% of methyl methacrylate, 2-4% of methacrylic acid, 1-3% of a cross-linking agent, 0.1-0.2% of ammonium persulfate, 0.2-0.3% of sodium dodecyl sulfate, 0.6-0.8% of alkylphenol polyoxyethylene, 0.05-0.1% of sodium bicarbonate, 2-3% of ammonia water and 60-70% of deionized water, wherein the sum of the contents of the components is 100%.

One feature of the present invention is:

the acrylate is one or more of methyl acrylate, ethyl acrylate and butyl acrylate.

The cross-linking agent is one or more of Glycidyl Methacrylate (GMA), N-hydroxymethyl acrylamide (N-MA) and Ethylene Glycol Dimethacrylate (EGDMA).

The other technical scheme adopted by the invention is as follows: a preparation method of a quick-drying type crosslinked polyacrylic acid textile size is implemented according to the following steps:

step 1, weighing 18-25% of acrylic ester, 4-6% of methyl methacrylate, 2-4% of methacrylic acid, 1-3% of a cross-linking agent, 0.1-0.2% of ammonium persulfate, 0.2-0.3% of sodium dodecyl sulfate, 0.6-0.8% of alkylphenol polyoxyethylene, 0.05-0.10% of sodium bicarbonate, 2-3% of ammonia water and 60-70% of deionized water, wherein the sum of the mass of the components is 100%;

step 2, 5 parts of lauryl sodium sulfate, 5 parts of alkylphenol ethoxylates and 5 parts of deionized water in the step 1 are uniformly distributed;

step 3, adding 1 part of sodium dodecyl sulfate, 1 part of alkylphenol polyoxyethylene and sodium bicarbonate into 1 part of deionized water, and stirring until the sodium dodecyl sulfate, the alkylphenol polyoxyethylene and the sodium bicarbonate are completely dissolved to serve as a kettle bottom solution;

step 4, taking 1 part of deionized water, adding ammonium persulfate, and stirring until the ammonium persulfate is completely dissolved to obtain an initiator aqueous solution;

step 5, mixing the acrylic ester, the methyl methacrylate, the methacrylic acid, the cross-linking agent, the rest 4 parts of sodium dodecyl sulfate, 4 parts of alkylphenol ethoxylates and 3 parts of deionized water, and emulsifying at a high speed to obtain a white pre-emulsion;

step 6, sequentially adding and mixing the kettle bottom liquid prepared in the step 3, the aqueous solution of the initiator with the total mass of 20% prepared in the step 4 and the pre-emulsion with the total mass of 20% prepared in the step 5, stirring and heating until the temperature is 75-80 ℃, and reacting to prepare seed emulsion;

step 7, simultaneously dropwise adding the initiator aqueous solution accounting for 80% of the residual total mass and the pre-emulsion accounting for 80% of the residual total mass into the seed emulsion while stirring at the temperature of 75-80 ℃, heating to 85 ℃ after dropwise adding, and preserving heat; and (3) cooling to 40-45 ℃, adding the ammonia water weighed in the step (1), adjusting the pH value, stirring again, filtering and discharging to obtain the textile size.

Another feature of the present invention is:

stirring speed in the step 6 is 200-250 r/min; the reaction time is 30-40 min.

The dripping time in the step 7 is 2-2.5 h, and the heat preservation time is 1.5-2 h.

The pH value in the step 7 is 6-7; the secondary stirring time is 30-40 min, and the secondary stirring speed is 200-250 r/min.

In the step 1, the acrylate is one or more of methyl acrylate, ethyl acrylate and butyl acrylate.

In the step 1, the cross-linking agent is one or more of Glycidyl Methacrylate (GMA), N-hydroxymethyl acrylamide (N-MA) and Ethylene Glycol Dimethacrylate (EGDMA).

The invention has the beneficial effects that:

the invention prepares a quick-drying type crosslinked polyacrylic acid textile size, based on the structural design and development of the crosslinked polyacrylic acid textile size, the quick-drying characteristic is realized, the prepared textile size with a crosslinked structure has fine and smooth particles, small average particle size and viscosity of 3-5 mPa & s, can quickly form a film, greatly improves the slashing drying efficiency, and effectively reduces the slashing energy consumption.

The invention relates to a preparation method of a quick-drying type crosslinked polyacrylic acid textile size, which adopts acrylic ester as a main monomer, ammonium persulfate as an initiator and sodium dodecyl sulfate and alkylphenol polyoxyethylene as a compound emulsifier, utilizes a crosslinking agent to realize chemical crosslinking in the monomer polymerization process, and synthesizes the quick-drying type crosslinked polyacrylic acid textile size by a preparation method of monomer pre-emulsification and seed emulsion polymerization. The prepared slurry has high monomer conversion rate and simple and convenient operation flow, and can realize large-scale automatic production. The preparation method has the advantages of wide raw material source, moderate price and good quality.

Detailed Description

The present invention will be described in detail with reference to the following embodiments.

A quick-drying cross-linked polyacrylic acid textile size comprises 18-25% of acrylic ester, 4-6% of methyl methacrylate, 2-4% of methacrylic acid, 1-3% of a cross-linking agent, 0.1-0.2% of ammonium persulfate, 0.2-0.3% of sodium dodecyl sulfate, 0.6-0.8% of alkylphenol polyoxyethylene, 0.05-0.1% of sodium bicarbonate, 2-3% of ammonia water and 60-70% of deionized water, wherein the sum of the contents of the components is 100%.

The acrylate is one or more of methyl acrylate, ethyl acrylate or butyl acrylate.

The cross-linking agent is one or more of Glycidyl Methacrylate (GMA), N-hydroxymethyl acrylamide (N-MA) or Ethylene Glycol Dimethacrylate (EGDMA).

A preparation method of a quick-drying type crosslinked polyacrylic acid textile size specifically comprises the following steps:

step 1: weighing raw materials according to the following formula, wherein the raw materials comprise 18-25% of acrylate, 4-6% of methyl methacrylate, 2-4% of methacrylic acid, 1-3% of cross-linking agent, 0.1-0.2% of ammonium persulfate, 0.2-0.3% of sodium dodecyl sulfate, 0.6-0.8% of alkylphenol polyoxyethylene, 0.05-0.10% of sodium bicarbonate, 2-3% of ammonia water and 60-70% of deionized water, and the sum of the contents of the components is 100%;

step 2, 5 parts of lauryl sodium sulfate, 5 parts of alkylphenol ethoxylates and 5 parts of deionized water in the step 1 are uniformly distributed;

step 3, adding 1 part of sodium dodecyl sulfate, 1 part of alkylphenol polyoxyethylene and sodium bicarbonate into 1 part of deionized water, and stirring until the sodium dodecyl sulfate, the alkylphenol polyoxyethylene and the sodium bicarbonate are completely dissolved to serve as a kettle bottom solution;

step 4, taking 1 part of deionized water, adding ammonium persulfate, and stirring until the ammonium persulfate is completely dissolved to obtain an initiator aqueous solution;

step 5, mixing the acrylic ester, the methyl methacrylate, the methacrylic acid, the cross-linking agent, the rest 4 parts of sodium dodecyl sulfate, 4 parts of alkylphenol ethoxylates and 3 parts of deionized water, and emulsifying at a high speed to obtain a white pre-emulsion;

step 6, sequentially adding the kettle bottom liquid prepared in the step 3, the aqueous solution of the initiator with the total mass of 20% prepared in the step 4 and the pre-emulsion with the total mass of 20% prepared in the step 5 into a reaction kettle, and heating while stirring until the temperature is 75-80 ℃ to perform reaction to prepare seed emulsion;

step 7, simultaneously dripping the initiator aqueous solution with the residual total mass of 80% and the pre-emulsion with the residual total mass of 80% into the seed emulsion to promote the continuous growth of the emulsion particles of the seed emulsion; stirring while dropwise adding, keeping the temperature at 75-80 ℃, after dropwise adding, heating to 85 ℃, and keeping the temperature for 1.5-2 hours; and (3) cooling to 40-45 ℃, adding the ammonia water weighed in the step (1), adjusting the pH value, stirring again, filtering and discharging to obtain the quick-drying textile size.

And 5, high-speed emulsification adopts a high-shear dispersing and emulsifying machine.

The reaction time in the step 6 is 30-40 min.

And in the step 7, the dripping time is 2-2.5 h.

The pH value in the step 7 is 6-7.

And 7, stirring for 30-40 min again.

The stirring speed in the step 6 and the step 7 is 200-250 rpm.

The invention synthesizes the quick-drying crosslinking polyacrylic acid textile size by using the preparation methods of monomer pre-emulsification and seed emulsion polymerization. Based on the structural design and development of the crosslinked polyacrylic acid textile size, the rapid drying characteristic of the textile size is realized, the prepared textile size with the crosslinked structure has fine particles, small average particle size and viscosity of 3-5 mPa & s, can be rapidly formed into a film, greatly improves the sizing drying efficiency, and effectively reduces the sizing energy consumption.