Flame-retardant reinforced polyamide resin composition

A technology of polyamide resin and composition, applied in the field of flame retardant polyamide resin composition, can solve the problems of deterioration of mechanical properties, easy breakage of molded products, and not necessarily satisfying electric and electronic parts and the like

Inactive Publication Date: 2003-11-05
ASAHI KASEI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When a melamine phosphate-based flame retardant is used in a large amount, not only the mechanical properties of the glass fiber-reinforced polyamide resin composition are severely deteriorated, but also the electrical characteristics, arc-tracking resistance required for electric parts used in a particularly high-voltage environment are deteriorated. Difference
Moreover, when a melamine phosphate-based flame retardant is used in a large amount, the releasability from the mold at the time of molding becomes poor, and molding processing at a high molding temperature for a long time tends to corrode the mold
Therefore, the composition does not necessarily meet the requirements of electric and electronic components as a molding material
[0006] Moreover, the technology of applying intumescent flame retardant melamine sulfate to glass fiber-reinforced semi-aromatic polyamide r

Method used

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  • Flame-retardant reinforced polyamide resin composition
  • Flame-retardant reinforced polyamide resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0123] In order to obtain a composition containing 49% by weight of polyamide resin (a-1), 26% by weight of flame retardant (b-1) and 25% by weight of glass fiber (c-1), polyamide (a-1) and The flame retardant (b-1) was fed from the top, and the glass fiber (c-1) was fed from the side, using a twin-screw extruder (TEM35 manufactured by Toshiba Machine Co., Ltd.) at a preset temperature in the barrel. Under the conditions of 260° C., screw speed of 200 rpm, and output of 30 kg / hour, the above materials were kneaded and extruded in the form of strands. After cooling, the strands were cut into pellets by a shear to obtain pellets of the polyamide resin composition. The obtained pellets were molded into test pieces, and various characteristics were determined by the above-mentioned measurement methods. The results are shown in Table 1. [Example 2]

Embodiment 2

[0124] Pellets were obtained in the same manner as in Example 1 except that (a-2) was used as the polyamide resin. The obtained pellets were processed into samples by molding, and various characteristics were determined by the above-mentioned measurement methods. The results are shown in Table 1. [Example 3]

Embodiment 3

[0125] Pellets were obtained in the same manner as in Example 1 except that (a-3) was used as the polyamide resin. The obtained pellets were processed into samples by molding, and various characteristics were determined by the above-mentioned measurement methods. The results are shown in Table 1. [Comparative Example 1]

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PUM

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Abstract

A flame-retardant reinforced polyamide resin composition comprising (a) a half-aromatic polyamide resin having a hexamethylene adipamide unit and a hexamethylene isophthalamide unit, (b) a melamine polyphosphate and (c) an inorganic reinforcing material, and, if necessary, (d) a polyalkylene polyhydric alcohol and/or a fatty acid ester derivative thereof, (e) a bisamide compound, and (f) a metal oxide and/or a molybdate. According to the composition of the present invention, molding materials can be provided which are very high in flame retardancy even when they are molded into thin-wall moldings, do not generate corrosive hydrogen halide gases during burning and, furthermore, have both excellent electric characteristics and excellent molding processability. <IMAGE>

Description

technical field [0001] The present invention relates to a flame-retardant polyamide resin composition, and more particularly, the present invention relates to components such as connectors, circuit breakers, electromagnetic switches, etc., which are suitable for electrical and electronic fields, and resistance to electronic parts in the automotive field. Combustible polyamide resin composition. Moreover, the flame-retardant reinforced polyamide resin composition of the present invention has high flame retardancy, does not generate corrosive hydrogen halide gas when burned, and has excellent electrical characteristics and excellent molding processability. Background technique [0002] So far, polyamide resins have been used in the fields of auto parts, mechanical parts, electric and electronic parts, etc. because of their excellent mechanical strength, heat resistance, etc. However, in current applications of electric and electronic components, the d...

Claims

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Application Information

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IPC IPC(8): C08K3/00C08K5/053C08K5/103C08K5/20C08K5/3492
CPCC08K5/34928C08K3/01
Inventor 矢加部贞行后藤祯次
Owner ASAHI KASEI KK
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