Flame-retardant and heat-resistant acrylonitrile butadiene styrene (ABS) composition and preparation method thereof

Abstract

The invention relates to the technical field of preparation of acrylonitrile butadiene styrene (ABS), and in particular relates to a flame-retardant and heat-resistant ABS composition and a preparation method thereof, wherein the composition consists of the following raw materials in parts by weight: 45-70 parts of acrylonitrile-butadiene-styrene resin, 11-16 parts of fire retardant, 2-5 parts of flame-retardant synergist, 0.1-0.2 part of antioxidant A, 0.1-0.2 part of antioxidant B, 0.5-0.7 part of lubricant A, 0.2-0.5 part of lubricant B, 9-30 parts of heat-resistant agent and 2-4 parts of flexibilizer. The ABS composition disclosed by the invention can reach 99.9 DEG C in heat distortion temperature, excellent in flame-retardant performance and accordant with the UL-94VO grade standard; the product has excellent stability, high mechanical strength and good quality; and the preparation method disclosed by the invention is simple in process, low in production cost and favorable for general popularization and application.

Description

technical field [0001] The invention relates to the technical field of ABS preparation, in particular to a flame-retardant and heat-resistant ABS composition and a preparation method thereof. Background technique [0002] Acrylonitrile-butadiene-styrene resin, referred to as ABS, is a terpolymer composed of acrylonitrile, butadiene and styrene. It is a light yellow or milky white granular non-crystalline resin. Because ABS can show the synergistic performance between the three components, it has excellent properties such as high surface hardness, toughness, good low temperature impact resistance, good creep resistance, good dimensional stability, small molding shrinkage, and excellent processing performance. With comprehensive physical and mechanical properties, it is widely used in household appliances, office supplies, electronic devices, automobile industry and other fields. However, ABS is easy to burn in the air, and its oxygen index is about 18. It is a flammable mate...

AI Technical Summary

Problems solved by technology

However, ABS is easy to burn in the air, and its oxygen index is about 18. It is a flammable material, and it releases black smoke and toxic gases when burned, which is prone to fire safety hazards. Flame retardant modification of ABS, people usually add flame retardant to ABS for flame retardant and smoke suppression treatment

However, the heat resistance of ABS itself is not high, and the heat distortion temperature is generally around 75°C. After adding a flame retardant to ABS, its heat resistance will drop even lower, and the heat distortion temperature is generally around 65°C. It makes the products unable to be used at higher temperatures, and it is difficult to meet the needs of certain fields such as household appliances, electronic telecommunications and auto parts that require high heat resistance of materials.