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Heat conductive flame-retarding polybutylene terephthalate and preparation method thereof

A polybutylene terephthalate and flame retardant technology, which is applied in the field of polybutylene terephthalate and its preparation, can solve the problem that polybutylene terephthalate flame retardant materials do not have the Thermal conductivity, thermal conductivity of polybutylene terephthalate resin has not been improved, no thermal conductivity, etc., to achieve the effects of good mechanical properties, low viscosity of the system, and excellent thermal conductivity

Active Publication Date: 2009-02-04
GUANGDONG SILVER AGE SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the added nitrogen-phosphorus flame retardants, inorganic flame retardants and plasticizers do not have good thermal conductivity, so the thermal conductivity of polybutylene terephthalate resin is not improved; Butylene phthalate flame retardant material does not have thermal conductivity; this material can be used in flame retardant plastic parts in the electrical and electronic industry, but it has no heat conduction and heat dissipation function, thus limiting its further application

Method used

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  • Heat conductive flame-retarding polybutylene terephthalate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] After fully drying the raw materials, in parts by weight, mix 40 parts of resorcinol-bis(diphenyl phosphate) and 20 parts of polyethylene glycol 6000 monostearate at 5000 rpm to 6000 rpm Perform shearing and stirring for 10 minutes at a rotational speed of rpm, then add 40 parts of magnesium oxide with a particle size of 50nm to 200nm and stir evenly to prepare a thermally conductive flame retardant. Take by weighing 817 grams of polybutylene terephthalate, 150 grams of the above-mentioned thermally conductive flame retardant, 30 grams of compatibilizer ethylene-methyl acrylate-glycidyl methacrylate copolymer (fully dry), 3 grams of Tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol ester and tris(2,4-di-tert-butylphenyl)phosphite in a molar ratio of 1:2 Antioxidant, mix the above components evenly, then extrude, draw, pelletize the obtained mixture in an extruder at 260°C, and inject into samples to make samples. Compatibilizer ethylene-methy...

Embodiment 2

[0029]After fully drying the raw materials, in parts by weight, mix 50 parts of resorcinol-bis(diphenyl phosphate) and 10 parts of polyethylene glycol 6000 monostearate at 5000 rpm to 6000 Perform shearing and stirring for 5 minutes at a rotating speed of rpm, and then add 40 parts of magnesium oxide with a particle size of 50nm to 200nm and stir evenly to prepare a thermally conductive flame retardant. In parts by weight, weigh 781 grams of polybutylene terephthalate, 175 grams of the above-mentioned thermally conductive flame retardant, 40 grams of compatibilizer ethylene-methyl acrylate-glycidyl methacrylate copolymer, 4 grams Composed of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]pentaerythritol ester and tris(2,4-di-tert-butylphenyl)phosphite in a molar ratio of 1:2 Mix the above components evenly, and then extrude, draw, pelletize the resulting mixture in an extruder at 240°C, and inject into samples to perform performance tests. The compatibilizer ethylen...

Embodiment 3

[0031] After fully drying the raw materials, in parts by weight, mix 45 parts of resorcinol-bis(diphenyl phosphate) and 15 parts of polyethylene glycol 6000 monostearate at 5000 rpm to 6000 Perform shearing and stirring for 8 minutes at a rotating speed of rpm, and then add 40 parts of magnesium oxide with a particle size of 50nm to 200nm and stir evenly to prepare a thermally conductive flame retardant. In parts by weight, weigh 745 grams of polybutylene terephthalate, 200 grams of the above-mentioned thermally conductive flame retardant, 50 grams of compatibilizer ethylene-methyl acrylate-glycidyl methacrylate copolymer, 5 grams Composed of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]pentaerythritol ester and tris(2,4-di-tert-butylphenyl)phosphite in a molar ratio of 1:2 Mix the above components evenly, and then extrude, draw, pelletize the resulting mixture in an extruder at 250°C, and inject into samples to perform performance tests. The compatibilizer ethyle...

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Abstract

The invention discloses heat-conductive flame-retardant valox and a preparation method thereof. According to the portion by weight, the heat-conductive flame-retardant valox contains 74.5 to 81.7 portions of valox, 15 to 20 portions of heat-conductive flame retardant, and 3 to 5 portions of compatilizer and antioxidizer. The preparation method is as follows: the components are mixed evenly, and then are treated by the processes of extrusion, traction and granulation at 240 to 260 DEG C to produce the heat-conductive flame-retardant valox. Oligomeric resorcinol (diphenylphosphate) is oil-soluble, amphiphilic polyethylene glycol 6000 monostearate can be assembled and coated through van der Waals interaction force under shear condition, ether bond and terminal hydroxy group on the main chain of polyethylene glycol 6000 monostearate can be complexed with magnesia to produce the heat-conductive flame retardant, thus the valox has good thermal conductivity and flame retardant properties.

Description

technical field [0001] The present invention relates to polybutylene terephthalate, in particular to polybutylene terephthalate with thermal conductivity and flame retardancy and a preparation method thereof, the polybutylene terephthalate with thermal conductivity and flame retardancy can be used Used as heat-conducting and flame-retardant plastic parts. Background technique [0002] Polybutylene terephthalate (PBT) thermoplastic engineering plastics was industrialized in the 1970s. It is the latest and fastest-growing variety of general engineering plastics. The water absorption rate of PBT is only 0.07%, there is no side chain in the molecule, the structure is symmetrical, it is easy to pack tightly, the crystallization speed is fast, it has a high degree of crystallinity (crystallinity can reach 40%) and high melting temperature. The high geometric regularity and rigidity of PBT molecules make the polymer have high mechanical strength. For example, the tensile strength ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K9/10C08K5/134C08K5/526B29B9/12B29C47/92B29C48/92
CPCB29C47/92B29C48/04B29C48/92B29C2948/92704B29C2948/92895
Inventor 傅轶李文波张德清谭颂斌曾钫吴水珠赵建青
Owner GUANGDONG SILVER AGE SCI & TECH CO LTD
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