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Weather-resistant PBT/AES alloy and preparation method thereof

A technology of weather resistance and PBT resin, which is applied in the field of high-strength impact resistance and weather resistance PBT/AES alloy and its preparation, can solve the problems of insufficient weather resistance of PBT resin, fast crystallization speed of PBT, large shrinkage of PBT, etc. Effects of shrinkage rate, increase in flexural modulus, and reduction in color difference

Active Publication Date: 2014-10-15
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shrinkage rate of PBT is very large and the crystallization speed of PBT is very fast, which will cause bending deformation due to uneven cooling. At the same time, PBT resin also has insufficient weather resistance and low modulus to be solved.

Method used

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  • Weather-resistant PBT/AES alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Dry 40 parts of PBT resin and 60 parts of AES resin at 100°C for 1 hour for later use; weigh 20 parts of 200 mesh light calcium carbonate and pour it into a high mixer, and then add 2 parts of silane coupling agent γ-aminopropyl tri Ethoxysilane was added and mixed for 2 minutes; then the dried PBT resin, AES resin, 10 parts of compatibilizer maleic anhydride grafted ABS, 0.3 parts of antioxidant tetrakis[β-(3,5-di-tert-butyl Base-4-hydroxyphenyl) propionate] pentaerythritol ester into the high mixer, after stirring again for 5 minutes, add the blend mixed in the high mixer into the twin-screw extruder for extrusion and granulation. The specific parameters of the twin-screw extruder are: the temperature of the first zone is 200°C, the temperature of the second zone is 225°C, the temperature of the third zone is 235°C, the temperature of the fourth zone is 245°C, the temperature of the fifth zone is 250°C, the temperature of the sixth zone is 250°C, and the temperature of...

Embodiment 2

[0035] Dry 80 parts of PBT resin and 20 parts of AES resin at 100°C for 2 hours for later use; weigh 5 parts of 800 mesh heavy calcium carbonate and pour it into a high mixer, and then add 0.2 parts of silane coupling agent γ-glycidyl ether oxygen Add propyltrimethoxysilane and mix for 5 minutes; add tetra[β-(3,5- Di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and 0.2 parts of antioxidant tris[2.4-di-tert-butylphenyl] phosphite were added to the high mixer, stirred again for 4 minutes and put into the high mixer The mixed blend is put into a twin-screw extruder for extrusion and granulation. The specific parameters of the twin-screw extruder are: the temperature of the first zone is 210°C, the temperature of the second zone is 235°C, the temperature of the third zone is 245°C, the temperature of the fourth zone is 250°C, the temperature of the fifth zone is 255°C, the temperature of the sixth zone is 250°C, and the temperature of the seventh zone is 250°C ℃,...

Embodiment 3

[0037] Dry 60 parts of PBT resin and 40 parts of AES resin at 100°C for 3 hours for later use; weigh 10 parts of 600 mesh light calcium carbonate and pour it into a high mixer, and then add 1 part of silane coupling agent γ-methacryloyl Add oxypropyltrimethoxysilane and mix for 8 minutes; then dry PBT resin, dried AES resin, 6 parts of compatibilizer maleic anhydride grafted ABS, 0.2 parts of antioxidant N, N' - Bis-(3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionyl) hexamethylenediamine and 0.2 parts of antioxidant dioctadecyl thiodipropionate are added to the high mixer and stirred again After 10 minutes, put the blend mixed in the high mixer into the twin-screw extruder to extrude and granulate. The specific parameters of the twin-screw extruder are: the temperature of the first zone is 205°C, the temperature of the second zone is 230°C, the temperature of the third zone is 240°C, the temperature of the fourth zone is 245°C, the temperature of the fifth zone is 250°C, the tem...

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Abstract

The invention provides a weather-resistant PBT / AES alloy and a preparation method thereof. The PBT / AES alloy is prepared from PBT resin, AES resin, calcium carbonate, a silane coupling agent, a compatilizer and an anti-oxidant according to a weight ratio. According to the invention, the AES resin is used as a weather-resisting agent for the alloy, so weatherability of the PBT resin is improved; a calcium carbonate particle is added, so the flexural modulus of the PBT / AES alloy is increased, injection molding shrinkage of the PBT resin is reduced, and the PBT / AES alloy is allowed to be more adaptive to unfavorable environments like an outside ultraviolet ray environment, a wet environment, a raining environment, an illumination environment and an ozone environment.

Description

[0001] technical field [0002] The invention relates to the field of polymer material modification, in particular to a high-strength impact-resistant and weather-resistant PBT / AES alloy and a preparation method thereof. [0003] Background technique [0004] Polybutylene terephthalate (PBT for short), which belongs to thermoplastic polyester series, is formed by polycondensation of 1.4-pbt butanediol and terephthalic acid (PTA) or terephthalate (DMT) , and a milky white translucent to opaque, crystalline thermoplastic polyester resin made through a kneading process. PBT is one of the toughest engineering thermoplastic materials. It is a semi-crystalline material with very good chemical stability, mechanical strength, electrical insulation properties and thermal stability. Due to these excellent properties, PBT resins are widely used in automotive interiors, motorcycle outer cushions, electric tools and refrigerator casing materials. However, the shrinkage rate of PBT is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L51/00C08K9/06C08K3/26B29C47/92B29C48/92
CPCB29C47/0011B29C47/92B29C48/04B29C48/40B29C48/92B29C2948/9259B29C2948/92704B29C2948/92895B29C2948/92904
Inventor 杨桂生储卫国
Owner HEFEI GENIUS NEW MATERIALS
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