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Thermal-oxidative-aging-resistant flame-retardant electric-conducting PBT (polybutylene terephthalate) composite material and preparation method thereof

A composite material, PBT resin technology, applied in the field of thermal-oxidative aging-resistant flame-retardant conductive PBT composite materials and their preparation, to achieve excellent thermal aging resistance, excellent flame retardant properties, and improved melt fluidity and thermal stability.

Inactive Publication Date: 2017-05-31
GUANGDONG ALDEX NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing product technology, the focus is on solving the balance between the mechanical properties and electrical conductivity of conductive PBT materials, but there are very few studies on improving the thermal and oxygen aging resistance of materials. This kind of PBT composite materials with both electrical conductivity and thermal and oxygen aging resistance can To further meet the needs of multiple industries for conductive PBT engineering plastics, the development of related products has a huge market prospect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A heat-oxidative aging-resistant flame-retardant conductive PBT composite material, the formula consists of:

[0024] raw material parts by weight PBT resin 60 conductive agent 20 flame retardant 16 Flame Retardant Synergist 3.3 antioxidant 0.7

[0025] The conductive agent is made of brass fiber, carbon fiber, and carbon nanotubes in a mass ratio of 1:3:1; the flame retardant is 2,4,6-tribromophenoxy-terminated tetrabromobisphenol A carbonate polymer; the flame retardant synergist is composed of sodium antimonate and aluminum hydroxide in a mass ratio of 2:1; the antioxidant is composed of N, N'-1,6-hexamethylene bis[3,5-bis( 1,1-dimethylethyl)-4-hydroxyphenylpropanamide] and tetrakis(2,4-di-tert-butylphenol)-4,4'-biphenyl diphosphite in a mass ratio of 1:4 mixed.

[0026] The conductive agent is mixed evenly with a low-speed mixer, and the mixing process is: 40 rpm, and the stirring time is 1 minute; the flame retardant s...

Embodiment 2

[0030] A heat-oxidative aging-resistant flame-retardant conductive PBT composite material, the formula consists of:

[0031] raw material parts by weight PBT resin 52.5 conductive agent 25 flame retardant 18 Flame Retardant Synergist 4 antioxidant 0.5

[0032] The preparation method is the same as in Example 1.

[0033] The conductive agent is made of brass fiber, carbon fiber, and carbon nanotubes in a mass ratio of 1:3:1; the flame retardant is 2,4,6-tribromophenoxy-terminated tetrabromobisphenol A carbonate polymer; the flame retardant synergist is made by mixing sodium antimonate and aluminum hydroxide in a mass ratio of 4:1; the antioxidant is made of N, N'-1,6-hexamethylene bis[3,5-bis( 1,1-dimethylethyl)-4-hydroxyphenylpropanamide] and tetrakis(2,4-di-tert-butylphenol)-4,4'-biphenyl diphosphite in a mass ratio of 1:2 mixed.

Embodiment 3

[0035] A heat-oxidative aging-resistant flame-retardant conductive PBT composite material, the formula consists of:

[0036] raw material parts by weight PBT resin 45 conductive agent 30 flame retardant 19.8 Flame Retardant Synergist 4.8 antioxidant 0.4

[0037] The preparation method is the same as in Example 1.

[0038] The conductive agent is made of brass fiber, carbon fiber, and carbon nanotubes in a mass ratio of 1:3:1; the flame retardant is 2,4,6-tribromophenoxy-terminated tetrabromobisphenol A carbonate polymer; the flame retardant synergist is made by mixing sodium antimonate and aluminum hydroxide in a mass ratio of 3:1; the antioxidant is made of N, N'-1,6-hexamethylene bis[3,5-bis( 1,1-dimethylethyl)-4-hydroxyphenylpropanamide] and tetrakis(2,4-di-tert-butylphenol)-4,4'-biphenyl diphosphite in a mass ratio of 1:3 mixed.

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PUM

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Abstract

The invention belongs to the field of high-polymer materials, and discloses a thermal-oxidative-aging-resistant flame-retardant electric-conducting PBT (polybutylene terephthalate) composite material. The PBT composite material is prepared from the following raw materials in parts by weight: 45-65 parts of PBT resin, 20-30 parts of electric-conducting agent, 15-20 parts of flame retardant, 3-5 parts of flame-retardant synergistic agent and 0.3-0.8 part of antioxidant. The invention also discloses a preparation method of the PBT composite material. The PBT composite material has the advantages of high processability, favorable conductivity, favorable flame retardancy, excellent mechanical properties and outstanding thermal oxidative aging resistance.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a heat-oxidative aging-resistant flame-retardant conductive PBT composite material and a preparation method thereof. Background technique [0002] Polybutylene terephthalate (PBT) is a semi-crystalline thermoplastic polyester with good heat resistance, weather resistance and chemical resistance, excellent electrical properties, low water absorption and good product Appearance and other advantages are widely used in automobiles, mechanical equipment, and electronic and electrical manufacturing industries, such as connectors, transformers, fuse casings, switches, relays, energy-saving lamps, coil skeletons, and motor casings. There are strict requirements. In addition, with the expansion of application performance, the demand for PBT materials in the fields of electronics and electrical engineering, integrated circuit packaging, and electromagnetic wave shielding is increasing. H...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K13/04C08K7/06C08K7/24C08K3/04C08K3/08C08K3/24C08K3/22C08K5/109
CPCC08K3/04C08K3/08C08K3/22C08K3/24C08K5/109C08K7/06C08K7/24C08K13/04C08K2003/085C08K2003/2227C08K2201/001C08K2201/003C08K2201/004C08K2201/014C08L2201/02C08L2201/04C08L2201/08C08L67/02
Inventor 易庆锋王灿耀于海鸥桑杰卢健体筱璘
Owner GUANGDONG ALDEX NEW MATERIAL CO LTD
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