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Studies on the Polyacrylate Sizes Prepared with Emulsion Polymerization

Author: ZhengZhiRong
Tutor: ZhuZhiFeng
School: Jiangnan University
Course: Textile Engineering
Keywords: Textile pulp Polyacrylate Preparation Slurry performance Serosal performance The structural unit
CLC: TS103.846
Type: Master's thesis
Year: 2006
Downloads: 314
Quote: 2
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Abstract


This article is polyacrylic size sizing performance defects and deficiencies , the main research polyacrylate emulsion polymerization slurry preparation and sizing performance . First , on the basis of relevant literature , polyacrylate slurry at home and abroad and its preparation process analysis and comparison, to finalize the selection of the emulsion polymerization method , semi-continuous dropping process of preparing polyacrylate paste . Polyacrylate preparation process on the stability of the system and the monomer conversion rate investigated to obtain the optimum preparation process : the use of semi-continuous monomer dropping method , the reaction temperature is 75 ° C , the reaction time for 3.5h , the amount of emulsifier 2.5%, the amount of initiator was 1.0% . And draw the amount of emulsifier is the main factor to affect the stability of the system and the monomer conversion . This paper studies the law of process conditions on the prepared slurry properties and adhesion properties . The results showed that the reaction temperature , reaction time , an emulsifier and initiator dosage had a significant effect on the viscosity and adhesion properties of the slurry . Polyacrylate ( PA ) / starches ( St ) blends , when the PA content is low , the adhesion properties of the slurry and film property is less than the same content of PVA PVA / St slurry ; increase when the PA content to 25% , the adhesion properties of the slurry and serosal performance is better than the same PVA content of PVA / St slurry. With PVA gradually replaced PA , PA / PVA / St blends adhesion properties of the slurry and the film property are improved . The article also the acrylonitrile structural unit polyacrylate slurry were studied . The results show that , instead of methyl methacrylate acrylonitrile to raise the glass transition temperature of the slurry , and help to improve the sizing performance of the polyacrylate slurry , help to improve the performance and reduce the cost of slurry .

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CLC: > Industrial Technology > Light industry,handicrafts > Textile industry,dyeing and finishing industry > General issues > Textile industry machinery and equipment > Textile accessories, equipment and auxiliary materials > Auxiliary materials > Slurry
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