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Polycarbonate/polybutylene terephthalate fire retardation composition

A technology of polybutylene terephthalate and a flame retardant composition, applied in the field of polymer materials, can solve the problems of poor flame retardancy, limited application scope, large melt viscosity, etc., and achieve excellent mechanical properties, The effect of excellent flame retardant properties

Inactive Publication Date: 2015-08-19
QINGDAO TONGCHUANG ENERGY SAVING ENVIRONMENTAL PROTECTION ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As an engineering plastic, polycarbonate (PC) has high impact strength, good creep resistance, good electrical insulation and dimensional stability; however, due to the high melt viscosity of PC, fluidity, solvent resistance and Wear resistance is poor, its application is limited
Polybutylene terephthalate (PBT) is a crystalline thermoplastic with fast crystallization speed and is suitable for high-speed molding. It has the advantages of chemical resistance and melt fluidity, but the notched impact strength is low.
Therefore, blending PC and PBT can complement each other, but the combination of unmodified PC and PBT has the problems of poor compatibility and poor flame retardancy, which will greatly limit its application range

Method used

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Examples

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Effect test

Embodiment 1

[0015] A polycarbonate / polybutylene terephthalate flame retardant composition, the components of which are proportioned by mass percentage: 52% bisphenol A aromatic polycarbonate, polybutylene terephthalate Alcohol ester 20%, styrene grafted maleic anhydride copolymer 3%, triphenyl phosphite 1%, flame retardant 15%, thermoplastic polyether ester TPEE 8%, antioxidant 1010 0.2%, pentaerythritol stearic acid 0.8% ester, and the flame retardant is composed of polyphenylsulfone diphenyl phosphonate 60 wt%, polydimethylsiloxane 35 wt%, potassium benzenesulfonylbenzenesulfonate 2 wt% and nano polytetrafluoroethylene A compound flame retardant prepared by uniformly mixing 3 wt% ethylene.

[0016] Preparation method: (1), dry bisphenol A aromatic polycarbonate in a blower dryer at 110°C-130°C for 3-4 hours, control the moisture content below 0.02%, and set aside; (2 ), dry polybutylene terephthalate in a blower dryer at 130°C to 150°C for 3 to 4 hours, and control the moisture content...

Embodiment 2

[0018] A polycarbonate / polybutylene terephthalate flame-retardant composition, the components of which are proportioned by mass percentage: 44% bisphenol A aromatic polycarbonate, polybutylene terephthalate Alcohol ester 40%, styrene grafted maleic anhydride copolymer 4%, triphenyl phosphite 1%, flame retardant 5%, thermoplastic polyether ester TPEE 5%, antioxidant 1010 0.5%, pentaerythritol stearic acid 0.5% ester, and the flame retardant is composed of polyphenylsulfone diphenyl phosphonate 60 wt%, polydimethylsiloxane 34 wt%, potassium benzenesulfonylbenzenesulfonate 5 wt% and nano polytetrafluoroethylene A compound flame retardant prepared by uniformly mixing 1 wt% of ethylene.

[0019] Preparation method: (1), dry bisphenol A aromatic polycarbonate in a blower dryer at 110°C-130°C for 3-4 hours, control the moisture content below 0.02%, and set aside; (2 ), dry polybutylene terephthalate in a blower dryer at 130°C to 150°C for 3 to 4 hours, and control the moisture conte...

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PUM

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Abstract

The present invention discloses a polycarbonate / polybutylene terephthalate fire retardation composition, which comprises, by mass, 40-60% of a bisphenol A type aromatic polycarbonate, 20-40% of polybutylene terephthalate, 1-4% of a styrene grafted maleic anhydride copolymer, 0.1-1% of triphenyl phosphite, 5-15% of a fire retardation agent, 3-8% of thermoplastic polyether ester TPEE, 0.1-0.5% of an antioxidant, and 0.1-1% of pentaerythrityl tetrastearate. The polycarbonate / polybutylene terephthalate fire retardation composition of the present invention has beneficial effects of excellent mechanical property and excellent fire retardation, and meets the halogen-free, smoke suppression, environmental protection and UL94V-0 grade fire retardation requirements, wherein the limiting oxygen index achieves more than or equal to 38%.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polycarbonate / polybutylene terephthalate flame retardant composition. Background technique [0002] As an engineering plastic, polycarbonate (PC) has high impact strength, good creep resistance, good electrical insulation and dimensional stability; however, due to the high melt viscosity of PC, fluidity, solvent resistance and The wear resistance is poor, and its application is limited. Polybutylene terephthalate (PBT) is a crystalline thermoplastic with fast crystallization speed and is suitable for high-speed molding. It has the advantages of chemical resistance and melt fluidity, but the notched impact strength is low. . Therefore, blending PC and PBT can complement each other, but the composition of unmodified PC and PBT has the problems of poor compatibility and poor flame retardancy, which will greatly limit its application range. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L67/02C08L85/02C08L83/04C08L27/18C08K13/02C08K5/42C08K5/526C08K5/134C08K5/103
CPCC08L69/00C08L2201/02C08L2201/22C08L2205/02C08L2205/035
Inventor 不公告发明人
Owner QINGDAO TONGCHUANG ENERGY SAVING ENVIRONMENTAL PROTECTION ENG
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