Flame-retarding reinforced acrylonitrile-butadiene-styrene (ABS) composite containing ceramic fibers and preparation method thereof

Abstract

The invention relates to ceramic fiber reinforced ABS and a composite prepared by flame-retarding and heat-resistance modification of ABS. The composite is characterized by comprising the following raw materials in part by weight: 55 to 80 parts of ABS resin, 10 to 25 parts of ceramic fibers, 3 to 10 parts of flame retardant, 1 to 5 parts of heat-resistant modifier and 2 to 5 parts of processing assistant. The composite has the advantage that the ceramic fibers serving as a functional modifying component have high flame-retarding performance and have the characteristics of high heat resistance, high surface hardness, high rigidity and the like. The composite can be used in electrical appliance shells and internal structure products, which have high flame retardance and heat resistance requirements and high performance requirements.

Description

technical field [0001] The invention relates to a ceramic fiber-reinforced flame-retardant ABS compound and a preparation method thereof. Background technique [0002] Ceramic fiber is a fibrous lightweight refractory material that combines the excellent properties of traditional thermal insulation materials and refractory materials. It has low thermal conductivity, excellent thermal stability, chemical stability, and non-corrosiveness. The diameter of the ceramic fiber is generally 2 μm to 5 μm, and the length is mostly 30 mm to 250 mm. The surface of the fiber is smooth and cylindrical, and the cross section is usually circular. Its structure is characterized by high porosity (generally greater than 90%), and large pore diameter and specific surface area. Since the air in the pores has a good thermal insulation effect, the size of the pores in the fiber and the properties of the pores (open pores or closed pores) have a decisive impact on its thermal conductivity. In fac...

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Problems solved by technology

However, the flame retardancy of ABS resin itself is extremely low, the oxygen index is only about 18, and the vertical combustion test cannot meet the UL94V-2 standard. The flame retardant modification of the flame retardant is very important; because the heat resistance of the general-purpose ABS resin itself is not high, the general heat distortion temperature is about 82-84°C (ASTM D648, 1.82MPa), and the heat resistance temperature of the ABS resin after flame retardant modification It will be further reduced, so it must be flame-retardant modified, and the heat resistance of ABS needs to be further improved in order to broaden its application field

However, in the existing research on modification of heat resistance and flame retardancy, there is no report on introducing appropriate ceramic fibers as functional modification components to improve the heat resistance, flame retardancy and balanced physical and mechanical properties of ABS composites.

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