Polyacrylate elastomer emulsion and preparation method thereof

A polyacrylate and elastomer technology, applied in the field of polyacrylate elastomer emulsion and its preparation, can solve the problems of high solvent cost, low molecular weight of synthetic polymers, limited improvement of material impact resistance, etc., and improve plasticizing ability , Improve the toughening effect, the effect of improving the impact strength

Active Publication Date: 2012-05-23
SHANGHAI HUAMING HI TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The synthetic polyacrylate adopts a solution method, which has the problem of high solvent cost, and small solvent molecules are easily introduced during the application process. These small molecule-containing substances are usually factors that cause the quality of polymer materials to deteriorate
And the molecular weight of the synthetic polymer is still low (Mw at 10 4 ~10 5 order of magnitude), and the improvement of the impact resistance of the material is also limited

Method used

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  • Polyacrylate elastomer emulsion and preparation method thereof
  • Polyacrylate elastomer emulsion and preparation method thereof
  • Polyacrylate elastomer emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Based on 100 parts of total monomer mass, add 2.5 parts of alkylphenol polyoxyethylene ether (OP-10) and 0.5 part of sodium dodecylbenzenesulfonate into the reaction kettle, add 200 parts of water, mix and heat up to At 65°C, add 15 parts of n-butyl acrylate, after pre-emulsification, add 0.15 parts of ammonium persulfate to initiate polymerization, keep the reaction at 75°C for 20 minutes, and obtain polyacrylate soft monomer seed emulsion;

[0042] Add 15 parts of n-butyl acrylate, 15 parts of n-octyl methacrylate, and 55 parts of methyl methacrylate dropwise in sequence at 78°C to the seed emulsion to continue the reaction, adding 0.1 part of ammonium persulfate during the reaction for 2.5 hours; After dropping the monomers, add 0.1 part of ammonium persulfate, keep warm for 4.5 hours, then cool and discharge to obtain polyacrylate elastomer emulsion P1.

[0043] The solid weight content of P1 polyacrylate emulsion is 33.0%, the volume average particle diameter of th...

Embodiment 2

[0047] Based on the total weight of the monomer as 100 parts, add 0.5 parts of alkylphenol polyoxyethylene ether (OP-10) and 2 parts of sodium dodecylbenzenesulfonate into the reaction kettle, add 300 parts of water, mix well and then heat up To 75°C, add 15 parts of isobutyl acrylate, after pre-emulsification, add 0.2 parts of potassium persulfate to initiate polymerization, keep the reaction at 80°C for 20 minutes, and obtain polyacrylate soft monomer seed emulsion;

[0048] Add 10 parts of isobutyl acrylate, 45 parts of methyl methacrylate, and 30 parts of vinyl acetate dropwise at 80°C to the seed emulsion to continue the reaction, during which 0.4 parts of potassium persulfate are added, react for 0.5 hours, and the monomers are added dropwise After completion, add 0.2 parts of potassium persulfate, keep warm for 1 hour, then cool and discharge to obtain polyacrylate elastomer emulsion P2.

[0049] The weight solid content of the P2 polyacrylate emulsion is 24.8%, the vol...

Embodiment 3

[0054] Based on 100 parts of the total monomer mass, add 1.5 parts of alkylphenol polyoxyethylene ether (OP-10) and 0.8 parts of sodium dodecylbenzenesulfonate into the reaction kettle, add 110 parts of water, mix well and then heat up To 80°C, add 20 parts of n-octyl methacrylate, add 0.2 parts of ammonium persulfate after pre-emulsification to initiate polymerization, keep the reaction at 95°C for 20 minutes, and obtain polyacrylate soft monomer seed emulsion;

[0055] Add 15 parts of n-octyl acrylate and 65 parts of styrene dropwise at 85°C to the seed emulsion to continue the reaction. During this period, add 0.15 parts of ammonium persulfate and react for 1 hour. Parts, heat preservation for 2.5 hours, cooling and discharging to obtain high molecular weight polyacrylate elastomer emulsion P3.

[0056] The solid content of the P3 polyacrylate emulsion is 47.0%, the volume average particle diameter of latex particles is 220nm, the Tg is 11.9°C, and the weight average molecu...

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Abstract

The invention provides a polyacrylate elastomer emulsion and a preparation method thereof. The polyacrylate elastomer emulsion is prepared from a soft monomer and a hard monomer with an emulsion polymerization method, wherein the soft monomer is more than one of n-butyl acrylate, isobutyl acrylate, octyl acrylate or n-octyl methacrylate; and the hard monomer is more than one of methyl methacrylate, styrene or vinyl acetate. The polyacrylate elastomer emulsion can be used for preparing a composite toughening modifier for plastic. The composite toughening modifier for plastic serving as a filler for a rubber material can be used for toughening together with CPE (Chlorinated Polyethylene), so that the impact resistance of the material is enhanced by over five times, and is enhanced by over 10 times in comparison to that of non-toughened PVC (Polyvinyl Chloride). The plasticizing capacity of a substrate is improved, the hardness and rigidity of a product can be enhanced, and the heat resistance, wear resistance and size stability of the material are enhanced. The application field of nano-calcium carbonate is enlarged greatly, and the cost of a rubber product can be lowered remarkably.

Description

technical field [0001] The invention relates to a polyacrylate elastomer emulsion and a preparation method thereof. Background technique [0002] Polyvinyl chloride material (hereinafter referred to as PVC) is a general-purpose plastic that ranks second in the world's resin production. However, in the actual application process, especially in chemical building materials, pure rigid PVC products have obvious defects such as high brittleness, poor thermal stability and poor processing fluidity, and it is difficult to meet the high strength, high toughness and temperature resistance of new materials. Performance requirements restrict the expansion of the application field of PVC materials. In order to improve these properties, the conventional technology is to add modifiers, specifically related to toughening, strengthening, improving heat resistance, endowing PVC functionality, etc., but most of them are researches on improving PVC toughness, especially strengthening and toug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F293/00C08F220/14C08F220/18C08F218/08C08F212/08C08F2/24C08K9/10C08K3/26C08L27/06
Inventor 杨景辉马治军吴秋芳马新胜栾英豪李忠辉
Owner SHANGHAI HUAMING HI TECH GRP
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