Flame-retardant glass fiber reinforced PA610 (Poly A 610)/PPO (poly-p-phenylene oxide) alloy composition and preparation method thereof

Abstract

The invention relates to a flame-retardant glass fiber reinforced PA610 (Poly A 610) / PPO (poly-p-phenylene oxide) alloy composition and a preparation method thereof. The composite comprises the following components in percentage by weight: 20% to 41% of PA610, 20% to 41% of PPO, 0 to 10% of compatilizer, 0 to 15% of compound flame-retardant masterbatch, 20% to 40% of glass fibers, 0.1% to 1% of antioxygen, and 0.1% to 1% of lubricating dispersing agent. The preparation method of the composition comprises the steps of: mixing the components which are weighted according to the percentage by weight in a high mixing machine for 2 to 5 minutes, and then discharging the mixed components; and extruding and granulating the mixed components through a twin-screw extruder, wherein the processing temperature ranges from 245 to 270 DEG C, and the revolution rate of each screw is 30 to 40 Hz. Compared with the prior art, the composition provided by the invention has the advantages of high CTI (Comparative Tracking lndex) value, low fire retardant precipitation, halogen-free performance, environment friendliness and balance in comprehensive performance, and can be widely applied to products in the field of electronic appliances such as contactors, leakage protectors, and housings of breakers.

Description

technical field [0001] The invention relates to a flame-retardant glass fiber reinforced alloy material, in particular to a flame-retardant glass fiber reinforced PA610 / PPO alloy composition and a preparation method thereof. Background technique [0002] In recent years, my country's electrical and electronic industry has developed rapidly, and the demand for high-electrical insulation and flame-retardant reinforced engineering plastics is increasing, such as low-voltage vacuum contactors, circuit breakers, leakage protectors, connectors, low-voltage switches, thin-walled electrical and electronic components, etc. It is necessary to use engineering plastic materials with good comprehensive mechanical properties, flame retardant properties and electrical insulation properties. In this product area, nylon / PPO alloy is used in the largest amount. However, because the development of flame retardants lags behind the industry's increasing requirements for materials, the addition o...

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Problems solved by technology

However, because the development of flame retardants lags behind the industry's increasing requirements for materials, the addition of many kinds of flame retardants to materials will greatly reduce the mechanical properties and electrical insulation properties of materials.

For example, the tracking index (CTI) drops from 600V to 200V or even lower. In addition, with the implementation of EU RoHs and WEEE directives, the traditional brominated flame retardant system can no longer meet this requirement. At the same time, some flame retardant The use of drugs will also be restricted

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