Flame retardant modified PC/PET composite material

A composite material and modification technology, applied in the field of flame retardant modified PC and PET composite materials, can solve the problems of limiting the application of halogen-based flame retardant PC/PET alloys, and achieve good impact strength and good effect.

Inactive Publication Date: 2015-06-17
QINGDAO TONGCHUANG ENERGY SAVING ENVIRONMENTAL PROTECTION ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The promulgation of the RoHs and WEEE directives issued by the European Union in 2003 has restricted the application of halogen-based flame-retardant PC / PET alloys in many industries.

Method used

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Experimental program
Comparison scheme
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Embodiment Construction

[0017] The technical solutions of the present invention will be further described below in conjunction with specific preferred embodiments.

[0018] A flame-retardant modified PC and PET composite material, the components of which are: PC 60%, PET 25%, composite flame retardant 10%, ethylene-butyl acrylate-glycidyl methacrylate copolymerization 3% compound, 0.2% compound of hindered phenolic antioxidant 1010 and phosphite antioxidant 168 with a mass ratio of 1:1, 0.8% carbodiimide, and 1% pentaerythritol stearate (PETS) . Wherein, the PC is bisphenol A type aromatic polycarbonate, the weight average molecular weight is 18000-35000g / mol, and the relative density is 1.20-1.22g / cm 3 , the Vicat softening temperature is 145°C-155°C; the PET is polyethylene terephthalate, and its relative density is 1.35-1.38 g / cm 3 , the intrinsic viscosity is 0.6-1.0dL / g; the composite flame retardant is bisphenol A-bis(diphenyl phosphate) (BDP) and polydimethylsiloxane (PDMS) with a mass ratio...

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Abstract

The invention discloses a flame retardant modified PC / PET composite material, which is composed of the following components in percentage by weight: 50 to 75% of PC, 10 to 30% of PET, 5 to 10% of composite flame retardant, 2 to 4% of toughened compatilizer, 0.1 to 0.5% of composite antioxidant, 0.5 to 1% of hydrolysis resisting agent, and 0.1 to 1.5% of lubricant. Compared with the prior art, the PET flame retardant master batch is prepared from a composite flame retardant at first, then the master batch is used to modify PC so as to obtain a PC / PET composite material, the PC / PET composite material has the advantages of PC and PET, and also has the characteristics of high impact resistant strength, high tensile strength, good heat resistant property, and good halogen-free flame-retardant modification effect, and the flame retardant performance of the PC / PET composite material can reach the UL94V-0 grade.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a flame-retardant modified PC and PET composite material. Background technique [0002] Polycarbonate (PC) is an engineering plastic with excellent performance. It has the advantages of good weather resistance, good dimensional stability, and heat resistance. However, PC is prone to stress cracking and poor solvent resistance. It is prone to stress in solvents and alkaline environments. Cracking and swelling, reduced impact resistance under low temperature conditions, low flame retardancy (oxygen index is 21% to 24%), etc., greatly limit its further popularization and utilization. Polyethylene terephthalate (PET) has excellent properties such as wear resistance, heat resistance, electrical insulation and chemical resistance, and is widely used in machinery, electronics, automobiles, electrical appliances manufacturing and consumer goods. Blending PET and PC can complem...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L67/02C08L83/04C08L23/08C08K5/523C08K5/12C08K5/526C08K5/29C08K5/103C08J3/22
CPCC08L69/00C08J3/226C08J2369/00C08J2467/02C08L2201/02C08L2201/08C08L2205/035C08L67/02C08L83/04C08L23/0846C08K5/523C08K5/12C08K5/526C08K5/29C08K5/103
Inventor 不公告发明人
Owner QINGDAO TONGCHUANG ENERGY SAVING ENVIRONMENTAL PROTECTION ENG
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