High CTI reinforced and flame-retarded PA6 composite material with high glowing filament and preparation method

Abstract

The invention discloses a high CTI reinforced and flame-retarded PA6 composite material with a high glowing filament and a preparation method. The high CTI reinforced and flame-retarded PA6 composite material comprises the components in parts by weight: 30-50 parts of PA630, 25-35 parts of compounded fire retardant, 3-6 parts of compounded antimonous oxide, 20-30 parts of a glass fiber, 0-10 parts of a filler, 2-8 parts of a flexibilizer, 0.1-1 part of antioxidant, 0.1-1 part of a lubricating agent and 0.1-1 part of other auxiliary. According to the PA6 composite material prepared by the invention, GWIT can reach 850 DEG C, and CTI can reach 425V at most; the PA6 composite material is high in processing performance, high in mechanical performance, and can meet the requirements of the field of electric products such as shutdown switches, temperature control switches, wiring terminals and the like.

Description

technical field [0001] The invention relates to a high glow wire and high CTI reinforced flame retardant PA6 composite material, in particular to a high glow wire high CTI reinforced flame retardant PA6 composite material which can be used in the fields of circuit breakers, temperature control switches and other electronic appliances and a preparation method thereof. Background technique [0002] PA6 is a translucent or opaque milky white semi-crystalline polymer, and it is one of the varieties with the largest output and widest application in the polyamide family. It has excellent thermodynamic properties, heat resistance, low friction coefficient, wear resistance, good self-lubrication, oil resistance, weak acid resistance, good electrical insulation and many other advantages. It is widely used in electronic appliances, automobiles, machinery and other fields. With the development of human living standards, various fields have more stringent requirements on the flame retar...

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Problems solved by technology

[0003] At present, the GWIT of pure PA6 flame retardant material can only reach 750°C, and the hot GWIT of glass fiber reinforced flame retardant PA6 composite material is also difficult to reach 800°C. They all meet the requirements of high glow wire by alloying with other engineering plastics, which not only increases the cost, but also increases the difficulty of injection molding

The Australian standard that came into use after October 30, 2010 requires non-metallic materials to pass the glow wire test at 850°C, the test condition is 30s, and then remove the heating wire. During the entire test period, the sample cannot be ignited, and the drips cannot ignite the silk. Paper, and the CTI of high glow wire reinforced flame retardant nylon currently on the market is lower than 250V, which limits the application of nylon in the field of electronic appliances

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