CN-121975044-A - Special polyvinyl chloride resin for preparing fabric coating product coating and production method thereof

CN121975044ACN 121975044 ACN121975044 ACN 121975044ACN-121975044-A

Abstract

The invention discloses a polyvinyl chloride special resin for preparing a fabric coating product coating and a production method thereof, wherein the polyvinyl chloride special resin comprises, by weight, 100 parts of vinyl chloride, 80-110 parts of deionized water, 0.8-2.5 parts of a composite emulsifier, 0.1-1 part of a modifier, 0.005-0.05 part of an oil-soluble composite initiator, 0.005-0.02 part of a buffering agent and 0.02-0.1 part of a viscosity regulator. Compared with the prior art, the composite emulsifying system is adopted to improve the rheological property of paste resin, so that the plastisol has medium viscosity under low shear and lower viscosity under high shear, the coating smoothness of a coated product is met, the penetration of cloth is avoided, meanwhile, the viscosity change condition of the adhesive plastisol is effectively improved, the addition of the modifier can reduce the surface elasticity of a liquid film, prevent the stability of the liquid film, improve the degassing property of the plastisol, and meanwhile, the addition of the viscosity modifier reduces the occurrence of shrinkage cavity condition, thereby meeting the requirement of no air hole of the coating of the woven cloth coated product.

Inventors

YANG AINA
LUO YANG
LIU CAIHONG
TIAN ZHAOWEI
CHEN SHUO
JIN ZHIBIN
ZHANG SHILI
WANG XINZHI
SUN CHENGJUAN
LI XIANGLU
LI LIYUN
DONG BO
SUN ZHENLI
LIU YAN
LIU DARUI
ZHANG SHENGNAN
MA ZHICHAO
DU JIE
ZHAO LIYING
ZHAO LIANG

Assignees

唐山三友氯碱有限责任公司

Dates

Publication Date: 20260505
Application Date: 20260319

Claims (8)

1. The polyvinyl chloride special resin for preparing the fabric coating product coating is characterized by comprising, by weight, 100 parts of vinyl chloride, 80-110 parts of deionized water, 0.8-2.5 parts of a composite emulsifier, 0.1-1 part of a modifier, 0.005-0.05 part of an oil-soluble composite initiator, 0.005-0.02 part of a buffering agent and 0.02-0.1 part of a viscosity regulator; the composite emulsifier is formed by combining two or more main emulsifiers and one or more auxiliary emulsifiers, wherein the main emulsifiers are 0.3-1.0 part and the auxiliary emulsifiers are 0.5-1.5 parts, the main emulsifiers are higher alcohol sulfate and alkylaryl sulfonate, and the auxiliary emulsifiers are higher fatty alcohols or higher fatty acids; the modifier is one or more of sulfosuccinate or alkyl naphthalene sulfonate; the oil-soluble composite initiator is a combination of one or two azo initiators and one or two peroxide initiators; The buffer is one of sodium bicarbonate solution, sodium hydrogen phosphate solution or sodium hydroxide solution; the viscosity modifier is one of isomeric alcohol ether, fatty alcohol polyoxyethylene ether or fatty acid polyoxyethylene ester.
2. The resin for preparing a coating of a fabric coating product according to claim 1, wherein the higher alcohol sulfate in the main emulsifier is sodium laurylsulfate, the carbon chain distribution of the higher alcohol sulfate is 70% -80% of C12, 15% -25% of C14 and 0% -10% of C16, and the alkylaryl sulfonate is sodium dodecyl benzene sulfonate, sodium tetradecyl benzene sulfonate or sodium dodecyl diphenyl ether disulfonate.
3. The resin for preparing a coating of a fabric coating product according to claim 1, wherein the higher fatty alcohol in the auxiliary emulsifier is a mixture of hexadecyl and octadecyl alcohol, wherein the hexadecyl alcohol content is 50% -80%, and the higher fatty acid is animal stearic acid or vegetable stearic acid.
4. The resin for polyvinyl chloride special for preparing the coating of the fabric coating product according to claim 1, wherein the modifier is one or more of sodium dihexyl succinate sulfonate, sodium dioctyl succinate sulfonate, sodium diisooctyl succinate sulfonate, sodium diisopropylnaphthalene sulfonate or sodium dibutylnaphthalene sulfonate.
5. The resin for polyvinyl chloride special for preparing fabric coating product coating according to claim 1, wherein in the oil-soluble composite initiator, azo initiator is azo diisoheptonitrile or azo diisobutyronitrile, and peroxide initiator is bis (2-ethylhexyl) peroxydicarbonate or bis (3, 5-trimethyl hexanoyl) peroxide.
6. The polyvinyl chloride special resin for preparing the coating of the fabric coating product according to claim 1, wherein the viscosity modifier is polyoxyethylene laurate, laureth or isomeric tridecyl polyoxypropylene ether.
7. The resin for preparing a coating layer of a fabric coated product according to claim 1, wherein the main emulsifier is 0.3 to 0.8 part, the auxiliary emulsifier is 0.6 to 1.2 parts, the modifier is 0.2 to 0.8 part, the buffer is 0.005 to 0.01 part, and the viscosity modifier is 0.02 to 0.08 part.
8. A process for preparing the polyvinyl chloride resin used for preparing the coated fabric product coating, as claimed in any one of claims 1-7, characterized by comprising the steps of respectively taking vinyl chloride, deionized water, an oil-soluble composite initiator, a main emulsifier, an auxiliary emulsifier and a modifier according to mass proportion, adding into a dispersion tank, homogenizing, then sending into a polymerization kettle, heating to 40-60 ℃ for polymerization reaction, finishing the polymerization reaction after 750-950 minutes, adding a buffering agent and a viscosity regulator after the residual vinyl chloride is recovered from the latex of the reaction product, and obtaining the polyvinyl chloride resin used for preparing the coated fabric product coating with the particle size of 0.1-10 mu m after spray drying and grinding by a grinder after the recovery.

Description

Special polyvinyl chloride resin for preparing fabric coating product coating and production method thereof Technical Field The invention relates to the technical field of polymer chemical industry, in particular to a polyvinyl chloride special resin for preparing a coating of a fabric coating product and a production method thereof. Background The polyvinyl chloride special resin is a high molecular compound polymerized by vinyl chloride monomer, and the polyvinyl chloride special resin, a plasticizer, a filler, a stabilizer, a PVC cross-linking agent and other processing aids are stirred and mixed to form stable plastisol. The PVC plastic composite material is prepared by uniformly coating PVC paste on base cloth, and performing heating, solidification and cooling shaping to obtain a finished product, and is mainly applied to processing of tarpaulin, lamp box cloth, background plate, advertisement cloth, inflatable yacht, water toys and other products. The product has higher requirements on viscosity change of adhesive plastisol, degassing performance of plastisol, flatness of plastisol after coating and control of base cloth permeation in the processing process, and the processing performance difference of the polyvinyl chloride special resin directly influences the quality index requirements of product surface flatness, softness, product porosity and the like. The polyvinyl chloride special resin processed product synthesized by the existing emulsion method has high porosity and poor softness, and the polyvinyl chloride special resin adhesive plastisol synthesized by the micro-suspension method has large viscosity change rate and more product pores, thus influencing the processing performance and quality of the product. Disclosure of Invention In order to solve the technical problems, the invention provides the polyvinyl chloride special resin for preparing the coating of the fabric coating product and the production method thereof, so as to meet the requirements of small viscosity change, high product surface flatness, moderate softness and no surface bubbles of adhesive plastisol required by the coating industry. In order to achieve the technical purpose, the invention adopts the following scheme: In the first aspect, the invention provides a polyvinyl chloride special resin for preparing a fabric coating product coating, which comprises, by weight, 100 parts of vinyl chloride, 80-110 parts of deionized water, 0.8-2.5 parts of a composite emulsifier, 0.1-1 part of a modifier, 0.005-0.05 part of an oil-soluble composite initiator, 0.005-0.02 part of a buffering agent and 0.02-0.1 part of a viscosity regulator; the composite emulsifier is formed by combining two or more main emulsifiers and one or more auxiliary emulsifiers, wherein the main emulsifiers are 0.3-1.0 part and the auxiliary emulsifiers are 0.5-1.5 parts, the main emulsifiers are higher alcohol sulfate and alkylaryl sulfonate, and the auxiliary emulsifiers are higher fatty alcohols or higher fatty acids; the modifier is one or more of sulfosuccinate or alkyl naphthalene sulfonate; the oil-soluble composite initiator is a combination of one or two azo initiators and one or two peroxide initiators; The buffer is one of sodium bicarbonate solution, sodium hydrogen phosphate solution or sodium hydroxide solution; the viscosity modifier is one of isomeric alcohol ether, fatty alcohol polyoxyethylene ether or fatty acid polyoxyethylene ester. Further, the higher alcohol sulfate in the main emulsifier is sodium laurylsulfate, the carbon chain distribution of the higher alcohol sulfate is 70% -80% of C12, 15% -25% of C14 and 0% -10% of C16, and the alkylaryl sulfonate is sodium dodecyl benzene sulfonate, sodium tetradecyl benzene sulfonate or sodium dodecyl diphenyl ether disulfonate. Further, the higher fatty alcohol in the auxiliary emulsifier is a mixture of sixteen and octadecyl alcohols, wherein the content of the sixteen alcohols is 50% -80%, and the higher fatty acid is animal stearic acid or vegetable stearic acid. Further, the modifier is one or more of sodium dihexyl succinate sulfonate, dioctyl succinate sulfonate, diisooctyl succinate sulfonate, diisopropyl naphthalene sulfonate or dibutyl naphthalene sulfonate. Further, in the oil-soluble composite initiator, the azo initiator is azo diisoheptonitrile or azo diisobutyronitrile, and the peroxide initiator is bis (2-ethylhexyl) peroxydicarbonate or bis (3, 5-trimethyl hexanoyl) peroxide. Further, the viscosity modifier is polyoxyethylene laurate, laurinol polyoxyethylene ether or isomeric tridecanol polyoxypropylene ether. Further, the main emulsifier is 0.3-0.8 part, the auxiliary emulsifier is 0.6-1.2 parts, the modifier is 0.2-0.8 part, the buffering agent is 0.005-0.01 part, and the viscosity regulator is 0.02-0.08 part. The second aspect of the invention provides a production method of the polyvinyl chloride special resin for preparing the fabric coating product coating, which compr