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Fireproof composition based on thermoplastic matrix

A thermoplastic matrix and composition technology, which is applied in the field of thermoplastic flame retardant compositions, can solve the problems of reducing flame retardant efficiency and unstable flame retardants, etc.

Active Publication Date: 2007-01-24
POLYAMIDE HIGH PERFORMANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, these flame retardants are known to be unstable at high temperatures
Therefore, some flame retardants degrade during the production process of plastic products, thereby reducing their flame retardant efficiency

Method used

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  • Fireproof composition based on thermoplastic matrix
  • Fireproof composition based on thermoplastic matrix
  • Fireproof composition based on thermoplastic matrix

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1: the preparation of composition

[0052] Prepared on a Werner & Pfleiderer ZSK 40 twin-screw extruder at 270°C with a screw speed of 200 rpm and a throughput of 35 kg / h by mixing the components in the proportions shown in Table 1 of Example 2 combination. The glass fibers were added to the mixture at the neck of the extruder. On an Arburg 320 M500-210 injection molding machine, the pellets were dried and melted at a temperature of 270-280°C and then molded at 80-90°C in the form of test specimens.

[0053] The final composition contained 30% glass fiber and 0.5% calcium stearate.

Embodiment 2

[0054] Embodiment 2: the mensuration of performance

[0055] Measure the properties of the sample according to the following methods:

[0056] - Fire resistance was tested according to test UL-94 ("Underwriters Laboratories"). The test was carried out on 0.8 mm thick specimens after conditioning for 48 hours at 50% RH (relative humidity) and 168 hours at 70°C. The results are marked as follows: N.C.: Not rated (low flame retardancy). V-2: the average burning time is less than 25 seconds, the maximum burning time is less than 30 seconds (self-extinguishing); polyamide drops ignite cotton; V-1: the average burning time is less than 25 seconds, the maximum burning time is less than 30 seconds (self-extinguishing) ; The drop did not ignite the cotton; V-0: the average burning time was less than 5 seconds, and the maximum burning time was less than 10 seconds (self-extinguishing); the cotton was not ignited.

[0057] - GWFT: The ability to extinguish a flame due to the applicati...

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PUM

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Abstract

The present invention relates to a thermoplastic flame retardant composition comprising a specific flame retardant system based on phosphinates and melamine derivatives. Such compositions are especially useful in the preparation of articles for use in the field of electrical or electronic connectors.

Description

field of invention [0001] The present invention relates to a thermoplastic flame retardant composition comprising a specific flame retardant system based on phosphinates and melamine derivatives. Such compositions are especially useful in the preparation of articles for use in the field of electrical or electronic connectors. Background technique [0002] Compositions based on thermoplastic resins are used to produce articles by different molding methods. These articles are used in numerous technical fields, such as for the manufacture of components for electrical or electronic systems. These elements should have high mechanical properties but at the same time be chemical resistant and electrically insulating, as well as have good flame retardancy when these elements are put into flames. An important aspect of this is that these components should not come into flames, that is, without producing a flame; or should come into flames at the highest possible temperature. [00...

Claims

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Application Information

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IPC IPC(8): C08K5/5313C08K5/3492C08L77/00
CPCC08K5/34926C08K5/5313C08K5/34922C08L77/00C08K5/34928
Inventor X·库扬M·阿莫雷斯
Owner POLYAMIDE HIGH PERFORMANCE
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