Halogen-free enhanced flame-retardant high-CTI value PA6 material for circuit breaker and preparation method thereof

Abstract

The invention discloses a halogen-free enhanced flame-retardant high-comparative tracking index (CTI) value polyamide6 (PA6) material for a circuit breaker and a preparation method thereof, and relates to a thermoplastic polymer fiber enhanced flame-retardant material and a preparation method thereof. The material solves the problem that the conventional halogen-free enhanced flame-retardant PA6 has low compatibility, low comparative tracking index (CTI value), poor mechanical property, low heat resistance and unqualified 960-degree glowing filament. The material is prepared from the following components: PA6 resin, glass fibers, a silane coupling agent, a complex halogen-free flame retardant, an antioxidant, a weather-resistant agent and a processing agent. The method for preparing the material comprises the following steps of: performing combinatorial optimization on an extruder screw, uniformly mixing the PA6 resin, the complex halogen-free flame retardant, the antioxidant and the processing agent and putting into a double-screw extruder; quantitatively adding the glass fibers, fully melting, compounding, extruding through a machine head, bracing wires, cooling, granulating and drying in the double-screw extruder; and finally, packaging. The product has the advantages of high CTI value, good flame retardant property, excellent mechanical property, high heat resistance and good performance of the glowing filament, and the preparation method is simple in process.

Description

technical field [0001] The invention relates to the field of polymer material technology and engineering, in particular to a preparation method and process of a thermoplastic polymer fiber-reinforced halogen-free flame-retardant high-CTI value circuit breaker material. Background technique [0002] Nylon is the most diverse and widely used engineering plastic in the world. The main varieties are: nylon 6 (PA6), nylon 66, nylon 610, etc. Nylon 6 is used in many fields, but nylon 6 is flammable, so it is necessary to develop flame-retardant nylon 6 with high electrical insulation performance. [0003] At present, most people use the method of adding halogenated flame retardants in the flame retardant modification of nylon 6. However, the potential hazards of traditional halogenated flame retardants to the human body and the environment are increasingly recognized and understood by people, and the use of halogen-free flame retardants has increasingly become a hot spot and an ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of poor compatibility, low tracking index (CTI value), poor thermal stability and poor weather resistance of glass fiber reinforced halogen-free flame-retardant PA6 at present, and to provide a kind of electrical performance, thermal Glass fiber reinforced halogen-free reinforced flame retardant high CTI value PA6 circuit breaker material with excellent stability and weather resistance, especially the material for circuit breaker shell