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A preparation method of reinforced polybutylene terephthalate flame-retardant heat-conducting material

A polybutylene terephthalate and thermally conductive material technology is applied in the field of preparation of flame-retardant thermally conductive materials, which can solve the problems of low impact strength, reduced mechanical properties, and limited application range, and achieve excellent flame-retardant performance. , The effect of improving impact toughness and elastic modulus, excellent insulation and thermal conductivity

Active Publication Date: 2011-12-21
SHANGHAI KINGFA SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] CN1995134A discloses a method for preparing polybutylene terephthalate with high CTI value and high flame retardancy, which uses 13-20 parts of composite flame retardant and 3-10 parts of flame retardant synergist to compound, solves the problem of High flame retardancy and high CTI value are difficult to meet simultaneously, but the mechanical properties are significantly reduced; CN101177522 discloses a nanocomposite toughened and reinforced modified polybutylene terephthalate and its production method. Improves the deficiency of notched impact strength of pure PBT products, and has excellent performance
Notched impact strength up to 30kJ / m 2 , the tensile strength reaches more than 100MPa, and the bending strength reaches 160MPa, but the flame retardancy of the material is not considered, and the application range is not wide

Method used

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  • A preparation method of reinforced polybutylene terephthalate flame-retardant heat-conducting material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] First, prepare the material: it consists of the following raw materials in parts by weight, 100 parts of polybutylene terephthalate, 12 parts of brominated polystyrene, 6 parts of antimony trioxide, 15 parts of nano-aluminum nitride, ethylene acrylic acid 8 parts of butyl ester-glycidyl methacrylate copolymer, 30 parts of glass fiber, 0.8 part of tris(2,4-di-tert-butylphenyl ester) phosphite, 0.5 part of triphenyl phosphate, 1 part of processing aid share.

[0046] Mix PBT resin and processing aid KH-550 in a high mixer for 1 minute, then mix brominated polystyrene, antimony trioxide, nano-aluminum nitride, ethylene butyl acrylate-glycidyl methacrylate copolymer, Tris(2,4-di-tert-butylphenyl ester) phosphite and triphenyl phosphate were added to the high mixer and mixed for 3 minutes, and then added to the extruder from the main feeding port; the glass treated with the interface modifier The fiber is fed into the twin-screw extruder through the glass fiber inlet for ex...

Embodiment 2

[0049] First, prepare the material: it consists of the following raw materials in parts by weight, 100 parts of polybutylene terephthalate, 14 parts of brominated polystyrene, 7 parts of antimony trioxide, 17 parts of nano-aluminum nitride, ethylene acrylic acid 8 parts of butyl ester-glycidyl methacrylate copolymer, 40 parts of glass fiber, 0.8 part of tris(2,4-di-tert-butylphenyl ester) phosphite, 0.5 part of triphenyl phosphate, 1 part of processing aid share.

[0050]Mix PBT resin and processing aid KH-550 in a high mixer for 1 minute, then mix brominated polystyrene, antimony trioxide, nano-aluminum nitride, ethylene butyl acrylate-glycidyl methacrylate copolymer, Tris(2,4-di-tert-butylphenyl ester) phosphite and triphenyl phosphate were added to the high mixer and mixed for 3 minutes, and then added to the extruder from the main feeding port; the glass treated with the interface modifier The fiber is fed into the twin-screw extruder through the glass fiber inlet for ext...

Embodiment 3

[0053] First, prepare the material: it consists of the following raw materials in parts by weight, 100 parts of polybutylene terephthalate, 15 parts of brominated polystyrene, 8 parts of antimony trioxide, 20 parts of nano-aluminum nitride, ethylene acrylic acid 8 parts of butyl ester-glycidyl methacrylate copolymer, 50 parts of glass fiber, 0.8 part of tris(2,4-di-tert-butylphenyl ester) phosphite, 0.5 part of triphenyl phosphate, 1 part of processing aid share.

[0054] Mix PBT resin and processing aid KH-550 in a high mixer for 1 minute, then mix brominated polystyrene, antimony trioxide, nano-aluminum nitride, ethylene butyl acrylate-glycidyl methacrylate copolymer, Tris(2,4-di-tert-butylphenyl ester) phosphite and triphenyl phosphate were added to the high mixer and mixed for 3 minutes, and then added to the extruder from the main feeding port; the glass fiber treated with the interface modifier It is fed into the twin-screw extruder from the glass fiber inlet for extrus...

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Abstract

The invention discloses a preparation method of reinforced polybutylene terephthalate flame-retardant heat-conducting material. The method is to firstly add polybutylene terephthalate and processing aids to a high mixer and then add composite flame retardants, flame retardant synergists, nano heat conducting agents, toughening agents, anti- Oxygen and stabilizer are mixed evenly and added to the twin-screw extruder from the main feeding port, and glass fiber is added to the twin-screw extruder. After the material is extruded, it is water-cooled, pelletized, and then packaged to obtain the heat-conducting material. The thermally conductive material not only has excellent thermal conductivity, flame retardancy and mechanical properties, but also mainly solves the heat dissipation problem caused by the miniaturization of electronic and electrical products due to technological progress.

Description

technical field [0001] The invention relates to a method for preparing a flame-retardant and heat-conducting material, in particular to a method for preparing a reinforced polybutylene terephthalate flame-retardant and heat-conducting material. Background technique [0002] Polybutylene terephthalate (PBT) is a thermoplastic engineering plastic. Compared with other general-purpose engineering plastics, it has the following main characteristics: (1) Excellent electrical insulation, which can still be used under high temperature and high humidity conditions. Maintain good electrical insulation performance; (2) Good chemical resistance and oil resistance; (3) Good heat resistance, the continuous use temperature of glass fiber reinforced products can reach 120-150 °C; (4) Can be prepared into flame-retardant plastics, In addition, rapid prototyping and excellent mechanical properties are possible. Therefore, PBT has been widely used in the fields of electronics, electrical appl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/04C08L67/02C08K7/14C08K3/28C08L25/04C08J5/08
Inventor 易庆锋王灿耀孙刚苏妤吉继亮
Owner SHANGHAI KINGFA SCI & TECH
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