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Composite toughening modifier for plastics and preparation method thereof

A technology for toughening modifiers and plastics, which can be used in the treatment of fibrous fillers and dyed polymer organic compounds. Plasticizing ability, toughening effect, impact strength improvement effect

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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  • Composite toughening modifier for plastics and preparation method thereof
  • Composite toughening modifier for plastics and preparation method thereof
  • Composite toughening modifier for plastics and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] 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;

[0049] 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.

[0050] The solid weight content of P1 polyacrylate emulsion is 33.0%, the volume average particle diameter of th...

Embodiment 2

[0054] 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;

[0055] 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.

[0056] The weight solid content of the P2 polyacrylate emulsion is 24.8%, the vol...

Embodiment 3

[0061] 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;

[0062] 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.

[0063] 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 composite toughening modifier for plastics and a preparation method thereof. The composite toughening modifier for plastics comprises nanometer calcium carbonate and polyacrylate elastomer coated on the nanometer calcium carbonate, wherein, the polyacrylate elastomer is formed by using a soft monomer and a hard monomer through polymerization, the soft monomer comprises one or more of acrylic acid butyl ester, isobutyl acrylate, octyl acylate, or octyl methacrylate, and the hard monomer comprises one or more of methyl methacrylate, styrene or vinyl acetate. The composite toughening modifier can be used as a filling material of a rubber and plastic material, can be used for toughening toughening cooperating with CPE to increase the impact strength of the material by more than 5 times, and the impact strength of the toughened material is increased by over more than 10 times more than that of untoughened PVC, the application range of nanometer calcium carbonate is greatly enlarged, and the cost of rubber and plastic products can be greatly reduced.

Description

technical field [0001] The invention relates to a plastic toughening additive and a preparation method thereof, in particular to a compound composed of nanometer calcium carbonate and polyacrylate elastomer 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, en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K9/10C08K3/26C08K5/098C09C1/02C09C3/10C08F220/14C08F220/18C08F212/08C08F218/08
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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