Polyamide composition with flame retardance and thermoplasticity

A technology of thermoplastic polyamide and composition, which is applied in the field of brominated flame-retardant thermoplastic polyamide composition and its preparation, can solve problems such as poor surface leakage performance, poor thermal stability, and decreased mechanical properties, and achieve enhanced safety performance and Improvement of electrical properties, surface insulation, and strategic resource saving effects

Active Publication Date: 2012-07-25
KINGFA SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the traditional antimony flame retardant synergist has poor thermal stability and low glow wire GWIT temperature
However, pure zinc borate has an unsatisfactory synergistic effect with halo...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~ Embodiment 5

[0032]According to the proportioning of materials in table 1, polyamide resin, flame retardant, flame retardant synergist (wherein flame retardant synergist is zinc borate and polydimethylsiloxane (PDMS) (by polydimethylsiloxane (PDMS)) in embodiment 1 Manufactured by DuPont Company), the weight ratio is 8.5:1.5), other processing aids are added to the mixer and mixed, and then fed into the extruder from the main feeding port; the reinforcing material is fed into the extruder from the side feeding port. After melt blending, it was cooled, air dried and pelletized. Among them, the temperature of the first zone to the ninth zone of the twin-screw extruder is 240°C, 250°C, 260°C, 250°C, 240°C, 230°C, 240°C, 240°C, 240°C, and the speed of the main engine is 300 rpm , residence time 1-3 minutes.

[0033] In addition, the flame retardant synergist can also be other combinations, wherein the ratio by weight of zinc borate and cage polymethylsilsesquioxane (produced by Hybrid Plastic...

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PUM

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Abstract

The invention discloses a polyamide composition with flame retardance and thermoplasticity. The polyamide composition with flame retardance and thermoplasticity comprises the following components in percentage by weight: 30-90% of thermoplastic polyamide resin, 5-40% of a brominated flame retardant, 0.5-15% of a flame-retardant synergist and 0-50% of a reinforcing material. According to the polyamide composition, the brominated flame retardant, the high-efficiency flame-retardant synergist (namely zinc borate) and organic silicon are added in polyamide resin, on the one hand, the polyamide composition can replace antimony trioxide which is a rare material and is limited to be exploited by the nation at present, limited strategic resources of the nation can be saved, and the cost is lowered; and on the other hand, the flame retardance, a CTI (comparative tracking index) value and GWIT (glow wire ignition temperature) of the polyamide composition can be improved greatly, and the safety guarantee is provided for the use of the flame-retardant polyamide product on electronic appliances with high requirements.

Description

technical field [0001] The invention relates to a brominated flame-retardant thermoplastic polyamide composition, in particular to a brominated flame-retardant thermoplastic polyamide composition with high efficiency flame retardancy, high CTI value and high glow wire GWIT and a preparation method thereof. Background technique [0002] Because polyamide has excellent mechanical properties and formability, it is widely used in industries such as automobiles, construction, electronic appliances and home appliances. In some industries with electricity or high temperature applications, such as the electrical and electronic industry, polyamides need to be flame retardant. In general, brominated polystyrene is used as a flame retardant in polyamide for the purpose of improving flame retardancy. By using antimony compounds in brominated flame retardants, excellent flame retardancy and mechanical properties can be imparted. performance. However, its electrical performance CTI and ...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L77/02C08L83/04C08L25/18C08K3/38C08K7/14
Inventor 金雪峰梁惠强张现军陈大华叶南飚袁绍彦刘奇祥
Owner KINGFA SCI & TECH CO LTD
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