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High impact resistance and high strength modified PC/PBT alloy and preparation method thereof

An impact modifier, high-strength technology, applied in the field of high-impact and high-strength modified PC/PBT alloy and its preparation, can solve the problems affecting the impact strength of materials, poor interface compatibility, etc., and achieve creep resistance Good performance, excellent chemical solvent resistance, small warpage

Inactive Publication Date: 2015-05-27
QINGDAO TONGCHUANG ENERGY SAVING ENVIRONMENTAL PROTECTION ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, from the perspective of polymer aggregate structure, PC is an amorphous polymer, while PBT is a crystalline polymer, so PC / PBT is a typical blend system of amorphous and crystalline, and its interface compatibility is poor, which affects the impact of the material. strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A high-impact high-strength modified PC / PBT alloy, the composition of which is: PC 45%, PBT 30%, MBS (styrene-butadiene-methacrylate Terpolymer) 8%, reinforcing agent 10%, triphenyl phosphite 1%, bisphenol A diglycidyl ether 2%, styrene grafted maleic anhydride copolymer 3%, hindered phenolic antioxidant 1010 Compound 0.3% with phosphite antioxidant 168 at a mass ratio of 1:2, PETS 0.7%. Wherein, the PC is bisphenol A type aromatic polycarbonate, the weight average molecular weight is 20000-30000g / mol; the PBT is polybutylene terephthalate, and its characteristic viscosity is 0.8-1.2dL / g; the reinforcing agent is composed of 50wt% of heavy calcium carbonate with a particle size of 0.5 to 5 μm, 25wt% of precipitated barium sulfate with a particle size of 0.5 to 1 μm, 20wt% of wollastonite with a particle size of 5 to 20 μm and A compound made of aluminum-titanium composite coupling agent with 5wt% composition.

[0022] Preparation method: (1), dry PC at 110°C-130°C fo...

Embodiment 2

[0024] A high-impact high-strength modified PC / PBT alloy, the composition of which is: PC 42%, PBT 40%, ACR (methacrylate-acrylate copolymer) 5 with core-shell structure %, enhancer 5%, triphenyl phosphite 1%, carbodiimide 1.5%, styrene-acrylonitrile-methacrylate hydroglyceride 4%, hindered phenolic antioxidant 1076 and phosphite antioxidant Oxygen 168 is a compound of 0.3% and TAS-2A 1.2% in a mass ratio of 1:2. Wherein, the PC is bisphenol A type aromatic polycarbonate, the weight average molecular weight is 20000-30000g / mol; the PBT is polybutylene terephthalate, and its characteristic viscosity is 0.8-1.2dL / g; the reinforcing agent is composed of 50wt% of heavy calcium carbonate with a particle size of 0.5 to 5 μm, 25wt% of precipitated barium sulfate with a particle size of 0.5 to 1 μm, 20wt% of wollastonite with a particle size of 5 to 20 μm and A compound made of aluminum-titanium composite coupling agent with 5wt% composition.

[0025] Preparation method: (1), dry P...

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PUM

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Abstract

The invention discloses a high strength super-toughened PC / PBT composite material and a preparation method thereof. The high strength super-toughened PC / PBT composite material comprises, by mass, 40-60% of PC, 20-40% of PBT, 10-15% of glass fiber, 3-10% of nanometer carbon fiber, 0.5-1% of triphenyl phosphate, 2-4% of a compatilizer, 0.1-0.5% of an antioxidant and 0.1-1% of a lubricant. Blend modification of PC / PBT alloy is carried out by adopting an impact resistance modifier and a self made reinforcing agent and adding a proper amount of triphenyl phosphate, a hydrolysis resistant agent and a compatilizer, so the obtained alloy system has respective original excellent performances of the PC and the PBT, and has the advantages of high impact resistance, high strength, high temperature resistance, good creep deformation resistance, small warping deformation, good dimensional stability, good processing fluidity, and excellent chemical solvent resistance.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high-impact high-strength modified PC / PBT alloy and a preparation method thereof. Background technique [0002] PC / PBT alloy (polycarbonate / polybutylene terephthalate) has the characteristics of small warpage denaturation, good dimensional stability, good fluidity, small linear thermal expansion coefficient, and excellent resistance to chemical solvents. It is an industrial An alloy plastic with high application value, which can be used to make bumpers, car door handles, car body side panels, electrical and electronic equipment components, etc. However, from the perspective of polymer aggregate structure, PC is an amorphous polymer, while PBT is a crystalline polymer, so PC / PBT is a typical blend system of amorphous and crystalline, and its interface compatibility is poor, which affects the impact of the material. strength. In order to enhance the compatibility of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L67/02C08L25/10C08L25/14C08L33/10C08K13/02C08K3/26C08K3/30C08K3/34C08K5/526B29B9/06
CPCC08L69/00B29B9/06C08K2201/003C08L2201/08C08L2205/035
Inventor 不公告发明人
Owner QINGDAO TONGCHUANG ENERGY SAVING ENVIRONMENTAL PROTECTION ENG