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Flame-retardant modified PC/PBT alloy material and preparation method thereof

An alloy material and modification technology, which is applied in the field of flame-retardant modified PC/PBT alloy material and its preparation, can solve the problems of material ignition and other problems, and achieve the effects of low cost, good compatibility and good dimensional stability

Inactive Publication Date: 2014-06-25
QINGDAO XINZHAN PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, when the blended PC / PBT alloy material is burned, the dripping hot melt can easily cause the nearby materials to catch fire. Therefore, the PC / PBT alloy material must be modified by flame retardancy.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A flame-retardant modified PC / PBT alloy material, the composition of which is: 40% PC, 40% PBT, 15% decabromodiphenyl ether, 1% triphenyl phosphite, ethylene-methyl acrylate Ester-glycidyl methacrylate terpolymer (E-MA-GMA) 1%, OP wax 1.5%, 2-hydroxy-4-methoxybenzophenone 0.5%, hindered phenolic antioxidant 1076 Compound 1% with phosphite antioxidant 168.

[0024] Preparation method: (1) Dry PC at 120°C-130°C for 3-4 hours, control the moisture content below 0.02%, and wait for use; (2) Dry PBT at 130°C-150°C for 3-4 hours, Control the moisture content below 0.03% and wait for use; (3) Dry decabromodiphenyl ether at 80°C-100°C for 30-60 minutes, stand-by; (4) Weigh the dried PC according to the weight ratio , PBT and decabromodiphenyl ether into a high-speed mixer, mix evenly, and then add triphenyl phosphite, ethylene-methyl acrylate-glycidyl methacrylate terpolymer (E- MA-GMA), OP wax, 2-hydroxy-4-methoxybenzophenone and the compound of hindered phenolic antioxidant...

Embodiment 2

[0026] A flame-retardant modified PC / PBT alloy material, the composition of which is: PC 55%, PBT 25%, bisphenol A bis (diphenyl phosphate) flame retardant (BDP) 18%, sub- Triphenyl phosphate 0.5%, ethylene-methyl acrylate-glycidyl methacrylate terpolymer (E-MA-GMA) 0.5%, ethylene bisstearamide (EBS) 0.5%, 2-hydroxy- 0.2% of 4-methoxybenzophenone, 0.3% of the compound of hindered phenolic antioxidant 1076 and phosphite antioxidant 168.

[0027] Preparation method: (1) Dry PC at 120°C-130°C for 3-4 hours, control the moisture content below 0.02%, and wait for use; (2) Dry PBT at 130°C-150°C for 3-4 hours, Keep the moisture content below 0.03% and keep it ready for use; (3) Dry the bisphenol A bis(diphenyl phosphate) flame retardant (BDP) at 80℃~100℃ for 30~60 minutes and keep it ready for use;(4) Weigh the dried PC, PBT and bisphenol A bis(diphenyl phosphate) flame retardant (BDP) according to the weight ratio, add it to the high-speed mixer, mix evenly, and then add the phosp...

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Abstract

The invention discloses a flame-retardant modified PC / PBT alloy material and a preparation method thereof. The flame-retardant modified PC / PBT alloy material comprises following components by weight: 30-60% of PC, 30-60% of PBT, 12-25% of a flame retardant, 0.5-2% of triphenyl phosphite, 0.5-2% of a compatibilizer, 0.5-2% of a dispersant, 0.1-1% of a stabilizing agent and 0.1-1% of an anti-oxidant. Beneficial effects of the alloy material and the preparation method are that: compared with the prior art, the PC / PBT alloy material has advantages of both the PC and the PBT; the alloy material is good in compatibility, good in comprehensive performance, high in flame retardant property, good in dimension stability, high in impact strength and good in surface gloss and appearance; the alloy material meets the UL94V-0 flame retardant level; and the alloy material can be widely used for machining materials for automobile bumpers. The preparation method of the flame-retardant modified PC / PBT alloy material is simple, convenient to operate and low in cost.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a flame-retardant modified PC / PBT alloy material and a preparation method thereof. Background technique [0002] Polycarbonate (PC) is one of the five major engineering plastics. It has comprehensive and balanced mechanical, electrical and heat resistance properties. It is famous for its excellent impact strength and creep resistance. However, PC has a high melt viscosity and is prone to stress cracking. , poor fluidity, poor solvent resistance, poor wear resistance. Polybutylene terephthalate (PBT) is a thermoplastic engineering plastic with a fast crystallization rate. It has excellent solvent resistance and good melt fluidity. However, PBT has a low glass transition temperature and insufficient high-temperature rigidity. Great sensitivity. Therefore, the blending modification of PC and PBT can overcome the shortcomings of PBT's poor heat resistance, low impact resi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L67/02C08L71/12C08L83/04C08K5/00C08K5/06C08K5/523C08K5/3492C08K5/526C08K5/132B29C47/92B29C48/92
CPCB29B9/12B29B7/46B29B7/72B29B7/7461B29B9/06B29C48/04B29C48/911B29C48/92B29C2948/9218B29C2948/92333B29C2948/92561B29C2948/9259B29C2948/92704B29C2948/92723B29C2948/92828B29C2948/92838B29C2948/92885C08K3/013C08K5/0066C08K5/523C08L67/02C08L69/00C09K21/12
Inventor 不公告发明人
Owner QINGDAO XINZHAN PLASTIC