Inflaming retarding aerosis polyamide arc extinguishing composite material

A composite material and polyamide technology are used in the preparation of miniature circuit breakers, flame-retardant gas-generating polyamide arc-extinguishing composite materials and their preparation fields, which can solve the problems of less arc-extinguishing materials and achieve excellent mechanical properties and thermal decomposition temperature. The effect of reduced, high arc extinguishing performance

Active Publication Date: 2015-04-29
中广核俊尔(浙江)新材料有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, there are relatively few studies on arc-extinguishing materials, especially thermoplastic arc-extinguishing materials.

Method used

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  • Inflaming retarding aerosis polyamide arc extinguishing composite material
  • Inflaming retarding aerosis polyamide arc extinguishing composite material
  • Inflaming retarding aerosis polyamide arc extinguishing composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Use the following weights of ingredients:

[0035]

[0036] Stir and mix polyamide 66, polyamide 6 and heat stabilizer (1098, 168) evenly, and then feed them into the twin-screw extruder from a feeder with precision metering; Water-absorbing compound (sodium polyacrylate), arc-extinguishing gas-generating flame-retardant compound (melamine cyanurate) and gas-generating accelerator (potassium nitrate) are stirred evenly at high speed, and added from the precision metering feeder through the fourth section of the side feeding port Twin-screw extruder; the polyamide prepolymer is fed from the sixth section of the barrel by a liquid metering feeder, fully plasticized, melted, compounded, extruded, drawn, water cooled, pelletized and dried to obtain Polyamide composite materials; among them, the aspect ratio of the twin-screw extruder is 36:1, and the temperature of each section of the screw is: the temperature of each working section from the first barrel to the eighth b...

Embodiment 2

[0038] Use the following weights of ingredients:

[0039]

[0040] The preparation method of the polyamide composite material is the same as in Example 1, and the polyamide composite material is obtained. The temperature of each section of the screw is: the temperature of each working section from the first barrel to the eighth barrel is 240±5, 240±5, 240±5, 240±5, 230±5, 230±5, 230±5 , 230±5, the temperature of the head is 230±5℃.

Embodiment 3

[0042] Use the following weights of ingredients:

[0043]

[0044]

[0045] The preparation method of the polyamide composite material is the same as in Example 1, and the polyamide composite material is obtained. The temperature of each section of the screw is: the temperature of each working section from the first section of the machine barrel to the eighth section of the machine barrel is 230 ± 5, 230 ± 5, 230±5, 230±5, 220±5, 220±5, 220±5, 220±5, the temperature of the machine head is 220±5℃.

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Abstract

The invention discloses an inflaming retarding aerosis polyamide arc extinguishing composite material which is prepared from the following raw materials in percentage by weight: 20.0-85.0% of polyamide, 5.0-25.0% of polyamide prepolymer, 5.0-15.0% of arc-quenching metallic compound, 0.0-15.0% of arc-quenching water absorbing compound, 10.0-20.0% of arc-quenching aerosis inflaming retarding compound, 0.5-2.0% of an aerosis accelerator and 0.0-5.0% of a processing aid. The inflaming retarding aerosis polyamide arc extinguishing composite material not only has a good inflaming retarding property but also can generate gas to assist arc extinction, has an excellent mechanical property, and is especially suitable for preparing miniature circuit breakers. The invention also provides a method for preparing the inflaming retarding aerosis polyamide arc extinguishing composite material. The method can be realized by adopting an existing twin-screw extruder; the preparation is simple and liable to industrial mass production, with broad application prospects.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a flame-retardant gas-generating polyamide arc-extinguishing composite material, a preparation method thereof, and an application in the preparation of miniature circuit breakers. Background technique [0002] The breaking capacity of the miniature circuit breaker is an important indicator of product performance. The level of breaking capacity and the effect are closely related to the level of arc extinguishing performance of the product. With the diversified development of end customers, the requirements for breaking capacity of products are getting higher and higher. For this reason, there are more and more researches on the arc extinguishing system of circuit breakers. [0003] There are mainly the following arc extinguishing methods for circuit breakers: quick pull arc extinguishing method, cooling arc extinguishing method, arc blowing arc extinguishing method, long arc arc e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L77/02C08L33/02C08K13/02C08K3/22C08K5/3492C08K5/526B29C47/92B29C48/92
CPCB29C48/92C08L77/02C08L77/06C08L2201/02C08L2205/02C08L2205/03C08L77/00C08L33/02C08K13/02C08K2003/2224C08K5/34924C08K3/28C08K5/526C08K5/18C08K2003/265C08K5/09
Inventor 田际波李俊郑京连
Owner 中广核俊尔(浙江)新材料有限公司
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