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Halogen-free flame-retardant polyamide composite material as well as preparation method and application thereof

A technology of flame-retardant polyamide and composite materials, which is applied in the field of halogen-free flame-retardant polyamide composite materials and its preparation, and can solve the problem of destroying cross-linking reactions, poor thermal stability of cross-linking agents TAIC and TAC, and unsatisfactory cross-linking effects, etc. problems, to achieve excellent comprehensive performance, improved aging resistance and heat resistance, and to meet the effect of flame retardancy

Active Publication Date: 2020-12-29
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because the presence of some flame retardants will inhibit or destroy the crosslinking reaction, making the crosslinking effect unsatisfactory
At the same time, some cross-linking agents TAIC and TAC have poor thermal stability, and after being added, they will decompose during use under long-term thermal conditions, which will also destroy the long-term stability of the flame retardant effect.

Method used

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  • Halogen-free flame-retardant polyamide composite material as well as preparation method and application thereof
  • Halogen-free flame-retardant polyamide composite material as well as preparation method and application thereof
  • Halogen-free flame-retardant polyamide composite material as well as preparation method and application thereof

Examples

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Effect test

Embodiment A1~A7

[0056] Example A1~A7, Comparative Example A2~A10, Example B1~B3, Comparative Example B2~B5, Comparative Example C1, Comparative Example C3, Comparative Example D1, Comparative Example D3, Comparative Example E1, Comparative Example E3 polyamide composite Preparation method of material:

[0057] According to the proportions in Table 1~4, each component is weighed, pre-mixed in a high mixer to obtain a premix, and then the premix is ​​put into a twin-screw extruder for melt mixing, and extruded to granulate. After injection molding, it is subjected to radiation cross-linking treatment to obtain a halogen-free flame-retardant polyamide composite material; wherein, the screw length-to-diameter ratio of the twin-screw extruder is 40:1 (the glass fiber is fed on the side of the 5-6 section of the screw) ), the screw barrel temperature is 240~300°C, the screw speed is 300rpm; the injection molding temperature is 280°C, and the injection molding pressure is 70MPa; the electron beam is...

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Abstract

The invention discloses a halogen-free flame-retardant polyamide composite material which comprises the following components: 20-80 parts of short-carbon-chain aliphatic polyamide resin; 15-20 parts of a halogen-free flame retardant; 0.01-10 parts of trimethallyl isocyanurate; and 10-50 parts of glass fiber. Polyamide molecules in the halogen-free flame-retardant polyamide composite material havea cross-linked structure. Aliphatic polyamide with a short carbon chain is selected, the halogen-free flame retardant with a specific ratio and a specific amount of methyl triallyl isocyanurate are synergistically combined for irradiation crosslinking treatment, the flame retardant requirement can be met, and the thermal compression resistance, the aging resistance and the heat resistance are remarkably improved.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a halogen-free flame-retardant polyamide composite material and its preparation method and application. Background technique [0002] Flame-retardant modified polyamide is a widely used raw material in the field of electronic appliances. Among the polyamide flame retardant systems, the halogen-containing flame retardant system is the most widely used, but when the halogen-containing materials are burned, a large amount of smoke and toxic gases will be generated, which is harmful to the environment and human health. For the purpose of environmental protection, many countries have restricted or reduced the use of halogen-containing flame retardants, and replaced them with halogen-free flame retardants. The most widely used halogen-free flame retardant systems are red phosphorus and melamine salts. However, red phosphorus can only be used in black products because of its...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L77/02C08K13/04C08K7/14C08K3/38C08K5/3492C08K5/5313C08K5/52
CPCC08K13/04C08K7/14C08K3/38C08K5/34924C08K5/5313C08K5/5205C08L2201/02C08L2201/22C08L2201/08C08K2003/387C08L2312/06C08L77/06C08L77/02
Inventor 戴剑叶南飚黄险波丁超郑一泉王丰张亚军
Owner KINGFA SCI & TECH CO LTD
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