Weather-resistant and flame-retardant PC/PBT alloy and preparation method thereof

A weather-resistant and alloy technology, applied in the field of engineering plastics, can solve the problems of thermal degradation, poor aging resistance, decreased flame retardant properties of materials, and failure to meet fire safety requirements, achieving good processing fluidity, improving efficiency, The effect of low internal stress

Inactive Publication Date: 2018-04-20
DONGGUAN HONOUR E P
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, PC and PBT are both linear aromatic polyesters with similar chemical structures, so they have good compatibility and can be mixed in any proportion to produce alloys with excellent performance in all aspects. The introduction of PBT in the industrial application price causes material resistance The flammability performance is seriously reduced, and the fire safety requirements in practical applications cannot be met.
At the same time, the existing PC / PBT alloy has poor thermal degradation resistance and aging resistance, so it is necessary to modify its flame retardancy and aging resistance to expand the application of materials

Method used

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  • Weather-resistant and flame-retardant PC/PBT alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Silicone modified polycarbonate 35;

[0041] Polybutylene terephthalate 22;

[0042] Compatibilizer 7;

[0043] Flame retardant 8;

[0044] Flame retardant auxiliary 1;

[0045] Anti-dripping agent 0.5;

[0046] transesterification inhibitor 2;

[0047] Antioxidant 0.5;

[0048] Liquid lubricant 0.3;

[0049] UV absorber 0.2;

[0050] a. Weigh silicone-modified polycarbonate, polybutylene terephthalate and liquid lubricant according to the weight ratio, and add them into a high-speed mixer and mix evenly;

[0051] b. Then add the solubilizer, flame retardant, flame retardant auxiliary agent, anti-dripping agent, transesterification inhibitor, antioxidant, and ultraviolet light absorber weighed by weight, and stir together for 3-10 minutes to achieve mixing After uniformity, the material is discharged;

[0052] c. Put the mixed material obtained in the previous step into a co-rotating twin-screw extruder, melt extrude, cool and granulate to obtain the weather-re...

Embodiment 2

[0054] Silicone modified polycarbonate 40;

[0055] Polybutylene terephthalate 30;

[0056] Compatibilizer 10;

[0057] Flame retardant 10;

[0058] Flame retardant auxiliary agent 2;

[0059] Anti-dripping agent 0.8;

[0060] transesterification inhibitor 2;

[0061] Antioxidant 0.5;

[0062] Liquid lubricant 0.5;

[0063] UV absorber 0.4;

[0064] a. Weigh silicone-modified polycarbonate, polybutylene terephthalate and liquid lubricant according to the weight ratio, and add them into a high-speed mixer and mix evenly;

[0065] b. Then add the solubilizer, flame retardant, flame retardant auxiliary agent, anti-dripping agent, transesterification inhibitor, antioxidant, and ultraviolet light absorber weighed by weight, and stir together for 3-10 minutes to achieve mixing After uniformity, the material is discharged;

[0066] c. Put the mixed material obtained in the previous step into a co-rotating twin-screw extruder, melt extrude, cool and granulate to obtain the we...

Embodiment 3

[0068] Silicone modified polycarbonate 50;

[0069] Polybutylene terephthalate 35;

[0070] Compatibilizer 12;

[0071] Flame retardant 11;

[0072] Flame retardant auxiliary agent 2;

[0073] Anti-dripping agent 0.8;

[0074] transesterification inhibitor 2.2;

[0075] Antioxidant 0.6;

[0076] Liquid lubricant 0.5;

[0077] UV absorber 0.3;

[0078] a. Weigh silicone-modified polycarbonate, polybutylene terephthalate and liquid lubricant according to the weight ratio, and add them into a high-speed mixer and mix evenly;

[0079] b. Then add the solubilizer, flame retardant, flame retardant auxiliary agent, anti-dripping agent, transesterification inhibitor, antioxidant, and ultraviolet light absorber weighed by weight, and stir together for 3-10 minutes to achieve mixing After uniformity, the material is discharged;

[0080] c. Put the mixed material obtained in the previous step into a co-rotating twin-screw extruder, melt extrude, cool and granulate to obtain the ...

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Abstract

The invention discloses a weather-resistant and flame-retardant PC/PBT alloy. The weather-resistant and flame-retardant PC/PBT alloy comprises raw materials of organosilicon modified polycarbonate, polybutylene terephthalate, compatibilizer, flame retardant, flame retardant auxiliary, anti-dripping agent, transesterification inhibitor, antioxidant, liquid lubricant, and UV absorber. According to the weather-resistant and flame-retardant PC/PBT alloy, an organic transesterification inhibitor having a good compatibility with a matrix is added to the alloy, so that the alloy material surface is smooth and free of pocking marks, and at the same time, the transesterification inhibitor used is organophosphorus which can play a synergistic effect with a brominated flame retardant, thereby reducing the using amount of the flame retardant.

Description

technical field [0001] The invention belongs to the technical field of engineering plastics, and in particular relates to a weather-resistant and flame-retardant PC / PBT alloy and a preparation method thereof. Background technique [0002] PC and PBT are alloyed, which can improve the fluidity of PC, improve processability, chemical resistance and reduce cost. At the same time, PC and PBT are both linear aromatic polyesters with similar chemical structures, so they have good compatibility and can be mixed in any proportion to produce alloys with excellent performance in all aspects. The introduction of PBT in the industrial application price causes material resistance The flammability is seriously reduced, and the fire safety requirements in practical applications cannot be met. At the same time, the existing PC / PBT alloy has poor thermal degradation resistance and aging resistance, so it is necessary to modify its flame retardancy, aging resistance and other aspects to expa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L67/02C08L91/00C08K5/524C08K5/521C08K5/3417C08K5/29C08K5/523C08K5/3462
CPCC08L69/00C08L2201/02C08L2201/08C08L2205/035C08L2205/08C08L67/02C08L91/00C08K5/524C08K5/521C08K5/3417C08K5/29C08K5/523C08K5/3462
Inventor 祁博曹建伟周雀平迟盛南
Owner DONGGUAN HONOUR E P
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