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PC/PBT (polycarbonate/polybutylene terephthalate) composite material with high glowing filament ignition temperature and preparation method thereof

A technology with high ignition temperature and high glow wire, which is applied in the field of polymer materials, can solve problems such as poor interface bonding, low impact toughness, and unsatisfactory impact toughness, and achieve good processing performance, high heat distortion temperature, and flame-retardant effects good effect

Inactive Publication Date: 2012-01-25
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the interface bonding is not good, and the impact toughness is not ideal. Usually, it is necessary to add a compatibilizer to improve the compatibility of the two phases, and add an impact modifier to improve the impact strength of the alloy, and obtain an alloy material with practical value.
[0003] At present, the main problems of PC / PBT alloys on the market are poor compatibility, low impact toughness after flame retardancy, and low instantaneous heat resistance of PC / PBT alloys, which cannot pass the new Australian heater standard.

Method used

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  • PC/PBT (polycarbonate/polybutylene terephthalate) composite material with high glowing filament ignition temperature and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Add the dried 65% PC 1250Y and 10% PBT 1100M into the high-speed mixer and pre-mix for 5 minutes, then add flame retardant RDT-8 15%, flame retardant anti-dripping agent SN3300B2 0.5%, toughening Agent C-223A 5%, lubricant EBS 0.3%, compatibilizer AN004 3%, antioxidant 1010 0.2%, finally add synergistic flame retardant DC-8008 1%, stir in a high-speed batch mixer for 5 minutes, each group Points are percentages by weight. to spare. Put the stirred mixture in a twin-screw machine to melt, extrude, and granulate. The process conditions are: twin-screw first stage temperature 220-230°C, second-stage temperature 230-240°C, third-stage temperature 240-260°C, mold temperature 60 ~100℃, residence time 1~2 minutes, pressure 10~15MPa;

Embodiment 2

[0042] Add the dried 70% PC IR2200 and 8% PBT 1084 into the high-speed mixer and pre-mix for 5 minutes, then add flame retardant FR-245 14%, flame retardant anti-dripping agent SN3300B2 0.3%, toughening Agent 2691A 4%, lubricant TAF 0.5%, compatibilizer THG-6018 2%, antioxidant 168 0.5%, finally add synergistic flame retardant DC-8008 0.7%, stir in a high-speed batch mixer for 5 minutes, each group Points are percentages by weight. to spare. Put the stirred mixture in a twin-screw machine to melt, extrude, and granulate. The process conditions are: twin-screw first stage temperature 220-230°C, second-stage temperature 230-240°C, third-stage temperature 240-260°C, mold temperature 60 ~100℃, residence time 1~2 minutes, pressure 10~15MPa;

Embodiment 3

[0044]Add the dry 72% PC 2405 and 12% PBT 1100-211M into the high-speed mixer and pre-mix for 5 minutes, then add flame retardant FR-245 10%, flame retardant anti-dripping agent SN3300B2 0.2%, Toughener C-223A 3%, lubricant EBS120 0.8%, compatibilizer AN004 1%, antioxidant 1010 0.8%, and finally add synergistic flame retardant DC-8008 1.2% and stir in a high-speed batch mixer for 5 minutes, Each component is a percentage by weight. to spare. Put the stirred mixture in a twin-screw machine to melt, extrude, and granulate. The process conditions are: twin-screw first stage temperature 220-230°C, second-stage temperature 230-240°C, third-stage temperature 240-260°C, mold temperature 60 ~100℃, residence time 1~2 minutes, pressure 10~15MPa;

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Abstract

The invention discloses a PC / PBT composite material with a high glowing filament ignition temperature and a preparation method thereof. The PC / PBT composite material with a high glowing filament ignition temperature comprises the following components, by weight, 65-75% of PC, 8-18% of PBT, 10-22% of a main flame retardant, 0.1-2% of a flame retardant synergist, and 3-12% of an assistant. Compared with composite materials prepared with the prior art, the composite material of the invention has the characteristics of good stamping fluidity, excellent processing property, high thermal deformation temperature, and passing of ball pressure tests at 105DEG C. The synergy of a highly efficient bromine-nitrogen matched flame retardant and a liquid silicon flame retardant is adopted in the invention, so the composite material of the present invention which has the advantages of environmental protection, good flame retardation effect, and passing of new standards of Australian fan heaters provides technical guarantees for the export of high-end electrical and electronic products to European Union or other countries.

Description

[technical field] [0001] The invention relates to the field of polymer materials, in particular to a high glow wire ignition temperature PC / PBT composite material and a preparation method thereof. [Background technique] [0002] PBT and PC alloy materials can improve PC fluidity, improve processing performance and chemical resistance. Since PBT is a crystalline polymer and PC is an amorphous polymer, the PC / PBT alloy belongs to a typical amorphous / crystalline blend system. There are phenyl groups on the molecules of PC and PBT, and some structural similarities make PC and PBT have certain compatibility. Another important reason for the partial compatibility of PC and PBT is that the transesterification reaction of PC and PBT occurs during the melt blending process to form a copolymer of PC and PBT. However, the interface bonding is not good, and the impact toughness is not ideal. Usually, it is necessary to add a compatibilizer to improve the compatibility of the two phase...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L67/02C08K5/00C08K5/3492C08K5/54C08K5/134C08K5/526B29C47/92B29C48/92
Inventor 徐东徐永何杰
Owner SHENZHEN KEJU NEW MATERIAL
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