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Highly-toughened bulk molding composition

A bulk molding compound and toughening technology, applied in the field of high toughening bulk molding compound, can solve the problems of decreased tensile strength and no significant improvement, and achieve the effect of improving toughness

Active Publication Date: 2012-02-08
江苏美赫家居有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These pathways have some effect on the toughening of BMC, but do not significantly improve
Moreover, such as modifying UP with flexible long chains and toughening BMC with rubber particles or liquid rubber, while improving the toughness of BMC materials, other properties such as tensile strength have decreased significantly.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A highly toughened bulk molding compound (BMC), which is obtained by polymerization of the following raw materials in parts by weight, wherein:

[0023] Resin 65

[0024] PSt 30

[0025] TBPB 1.0

[0026] TBPO0.5

[0027] Zinc stearate 4

[0028] Vinyl terminated liquid nitrile rubber 8

[0029] Calcium Carbonate Whiskers 40

[0030] Styrylaminofunctional Silane 2.5

[0031] Calcium carbonate 200

[0032] 6mm glass fiber 70

[0033] The polymerization reaction is as follows: add the weighed m-phenylene resin, PMMA, TBPB, TBPO, zinc stearate, vinyl-terminated liquid nitrile rubber, calcium carbonate whiskers, and styryl amino functional group silane into the high-speed disperser and stir Dispersion, the speed of the high-speed mixer is 1200 rpm, and the stirring and dispersing time is 7 minutes from the addition of the material to the end; the calcium agglomerate is introduced into the BMC kneader, and then the dispersed resin paste is poured into the BMC kne...

Embodiment 2

[0036] Another highly toughened bulk molding compound (BMC), which is obtained by polymerization of the following raw materials in parts by weight, wherein:

[0037] Resin 65

[0038] PSt 30

[0039] TBPB 1.0

[0040] TBPO0.5

[0041] Zinc stearate 4

[0042] Vinyl terminated liquid nitrile rubber 14

[0043] Calcium Carbonate Whiskers 40

[0044] Styrylaminofunctional Silane 2.5

[0045] Calcium carbonate 200

[0046] 6mm glass fiber 70

[0047] The polymerization reaction is as follows: add the weighed m-phenylene resin, PMMA, TBPB, TBPO, zinc stearate, vinyl-terminated liquid nitrile rubber, calcium carbonate whiskers, and styryl amino functional group silane into the high-speed disperser and stir Dispersion, the speed of the high-speed mixer is 1200 rpm, and the stirring and dispersing time is 7 minutes from the addition of the material to the end; the calcium agglomerate is introduced into the BMC kneader, and then the dispersed resin paste is poured into the ...

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PUM

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Abstract

The invention discloses a highly-toughened bulk molding composition which is obtained by polymerization of the following raw materials by weight: 60-80 parts of unsaturated resin, 10-40 parts of low shrinkage agents, 1-2 parts of curing agents, 2-5 parts of mold release agents, 4-20 parts of toughening agents, 30-80 parts of whiskers, 2-5 parts of coupling agents, 100-250 parts of filling materials, 50-150 parts of glass fibers. The invention adopts end active group liquid rubber and whiskers to toughen the BMC material. The toughness of the BMC material is increased by end vinyl liquid butadiene-acrylonitrile rubber; the strength of the BMC material is increased by calcium carbonate whiskers treated by the active end styrene coupling agent; and the trend of the decrease of the strength of the material due to the addition of the liquid rubber is counteracted. Therefore, the highly-toughened BMC material is obtained without the decrease of the strength.

Description

technical field [0001] The invention relates to a high toughness bulk molding compound with high toughness. Background technique [0002] The abbreviation of BMC material Bulk molding compounds, that is, bulk molding compound. It is often called unsaturated polyester bulk molding compound in China. Its main raw materials are GF (chopped glass fiber), UP (unsaturated resin), MD (filler) and various additives that are fully mixed into a dough-like prepreg. BMC materials were first applied in the former West Germany and the United Kingdom in the 1960s, and then developed in the United States and Japan in the 1970s and 1980s. Because BMC bulk molding compound has excellent electrical properties, mechanical properties, heat resistance, chemical corrosion resistance, and adapts to various molding processes, it can meet the performance requirements of various products, so it is more and more popular among users. favorite. However, ordinary UP is brittle, resulting in poor impa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/06C08L13/00C08L15/00C08K13/04C08K7/14C08K7/08C08K5/544
Inventor 鲁平才阮诗平
Owner 江苏美赫家居有限公司
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