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Novel halogen-free flame-retardant composition, halogen-free flame-retardant PBT engineering plastic composite material and preparation method thereof

A technology of engineering plastics and composite materials, applied in the field of halogen-free flame-retardant PBT engineering plastic composite materials and its preparation, and new halogen-free flame-retardant compositions, can solve the problems of low heat resistance and stability of tracking index, and achieve Good thermal stability, high CTI, high thermal stability effect

Inactive Publication Date: 2015-04-01
XIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with the high-end products of a few large international companies, the existing domestic technology still has certain defects, mainly due to the low tracking index (CTI) and low heat resistance stability. Therefore, it is necessary to develop products with independent intellectual property rights Halogen-free flame retardant reinforced PBT composite material has great application value and broad development space

Method used

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  • Novel halogen-free flame-retardant composition, halogen-free flame-retardant PBT engineering plastic composite material and preparation method thereof
  • Novel halogen-free flame-retardant composition, halogen-free flame-retardant PBT engineering plastic composite material and preparation method thereof
  • Novel halogen-free flame-retardant composition, halogen-free flame-retardant PBT engineering plastic composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Add 5.4kg FR1, 2.0kg FR2, 1.0kg FR3, 2.0kg FR4 and 0.2kg FR5 to the mixer, stir at 60rpm, 100rpm, 160rpm and 200rpm respectively for 5 minutes to obtain the new halogen-free flame retardant FRs;

[0053] Select 11-15μm alkali-free glass fiber and soak it in silane coupling agent, then take it out and dry it for later use;

[0054] Bake PBT resin at 120-130°C for 5.5 hours, bake 45kg of PBT resin, 10kg of halogen-free flame retardant FRs, 0.1kg of calcium oxide, 0.6kg of antioxidant, 0.3kg of lubricant, 0.4kg of coupling agent, 1kg of compatibilizer and 5kg of toughening agent were added to the mixer in turn, and then stirred at 100rpm and 200rpm for 5 minutes respectively to obtain the premix of halogen-free flame retardant FRs flame-retardant PBT composite material;

[0055] Among them, the antioxidant consists of tetrakis [3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and tris (2,4-di-tert-butylphenyl) phosphite in weight ratio The compositi...

Embodiment 2

[0058] Add 7.8kg FR1, 3.6kg FR2, 1.2kg FR3, 3.3kg FR4 and 0.15kg FR5 to the mixer, stir at 80rpm, 120rpm, 140rpm and 180rpm respectively for 5 minutes to obtain the new halogen-free flame retardant FRs;

[0059] Select the 4-8μm non-alkali glass fiber and soak it in the silane coupling agent, take it out and dry it for later use;

[0060] Add 60kg of PBT resin, 16kg of halogen-free flame retardant FRs, 0.3kg of calcium oxide, 0.3kg of antioxidant, 0.5kg of lubricant, 0.2kg of coupling agent, 3kg of compatibilizer and 1kg of toughening agent into the mixer in sequence , then respectively stirred for 5 minutes with 100rpm, 140rpm, 180rpm, and 220rpm to obtain the halogen-free flame retardant FRs flame-retardant PBT composite material premix;

[0061] Among them, the antioxidant consists of tetrakis [3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and tris (2,4-di-tert-butylphenyl) phosphite in weight ratio 1:2.5; the lubricant is composed of pentaerythri...

Embodiment 3

[0064] Add 14kg FR1, 4kg FR2, 3kg FR3, 4.5kg FR4 and 0.25kg FR5 to the mixer, stir at 80rpm, 140rpm and 200rpm respectively for 5 minutes to obtain the new halogen-free flame retardant FRs;

[0065] Select 10-13μm alkali-free glass fiber and soak it in silane coupling agent, then take it out and dry it for later use;

[0066] Add 70kg of PBT resin, 23kg of halogen-free flame retardant FRs, 0.5kg of calcium oxide, 0.4kg of antioxidant, 0.8kg of lubricant, 0.6kg of coupling agent, 6kg of compatibilizer and 12kg of toughening agent into the mixer in sequence , and then respectively with 100rpm, 160rpm, 200rpm, each stirred for 5 minutes to obtain the halogen-free flame retardant FRs flame retardant PBT composite material premix;

[0067]Among them, the antioxidant is β-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate; the lubricant is pentaerythritol stearate; the coupling agent is γ-glycidol Etheroxypropyltrimethoxysilane; compatibilizer is ABS-g-MAH; toughening agent...

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Abstract

The invention relates to the field of flame-retardant polymer materials and particularly relates to a novel halogen-free flame-retardant composition, halogen-free flame-retardant PBT engineering plastic composite material and a preparation method thereof. The halogen-free flame retardant FRs is mainly obtained by mixing FR1, FR2, FR3, FR4 and FR5 at a specified ratio and the substances are used in combination so that the halogen-free flame-retardant system has higher heat-resistant stability and good fire-retardant property. The halogen-free flame-retardant PBT engineering plastic composite material is mainly prepared from PBT, alkali-free glass fiber, the halogen-free flame retardant FRs, a CTI synergist, an antioxidant, a lubricant, a coupling agent, a compatibilizer and a toughener; by the cooperation of each component, the prepared halogen-free flame-retardant PBT engineering plastic composite material has excellent comprehensive properties such as flame retardant property, electrical property, heat resistance, mechanical property and coloring property; the preparation method of the composite material is simple and feasible and the prepared composite material has excellent comprehensive properties.

Description

technical field [0001] The invention relates to the field of flame-retardant polymer materials, in particular to a novel halogen-free flame-retardant composition, a halogen-free flame-retardant PBT engineering plastic composite material and a preparation method thereof. Background technique [0002] Polybutylene terephthalate (PBT) is a crystalline linear saturated polyester with excellent processing properties, mechanical properties, heat aging resistance, solvent resistance, water stability and electrical properties, etc. It has been widely used in automobiles, mechanical equipment, household appliances, and electrical and electronic manufacturing industries, and has become an important member of engineering plastics. [0003] Flame retardants need to be added to PBT engineering plastics to improve their flame retardancy. For a long time, flame retardant PBT engineering plastic composite materials usually use brominated flame retardants. Brominated flame retardants have ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/08C08L27/18C08K5/527C08K5/3492C08K5/5399C08L67/02C08K13/06C08K9/06C08K7/14B29C47/92B29C48/92
CPCB29C48/92B29C2948/9258B29C2948/92704C08K2201/003C08L67/02C08L79/08C08L2201/02C08L2201/08C08L2201/22C08L2205/025C08L2205/035C08L27/18C08K5/34928C08K5/527C08K5/5399C08L55/02C08L23/0869C08K13/06C08K9/06C08K7/14C08L33/12C08L31/08
Inventor 陈明军钟柳刘治国林羿成王小宁
Owner XIHUA UNIV
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