Thermal-resistant light-smoke halogen-free flame-retardant PC/ABS alloy material and preparation method thereof

Abstract

The invention discloses a thermal-resistant light-smoke halogen-free flame-retardant PC (polycarbonate) / ABS (acrylonitrile-butadiene-styrene terpolymer) alloy material and a preparation method thereof. The alloy material comprises the following raw material in percentage by weight: 60%-80% of PC resin, 5%-20% of ABS resin, 6%-15% of halogen-free flame retardant, 5%-15% of thermal-resistant modifier, 0.1%-2% of inorganic complex antismoke agent, 0%-10% of flexibilizer and 1%-5% of other processing agents. According to the invention, the thermal-resistant light-smoke halogen-free flame-retardant PC / ABS alloy material can be obtained by a manner of adopting the PC and ABS resins as the substrates and using the synergistic interaction of the thermal-resistant modifier, the halogen-free flame retardant and the inorganic complex antismoke agent; and the alloy material can be widely applied to the industries, such as communications industries, automobile industries, building materials, decoration materials, cables and electrical appliance industries. The preparation method of the alloy material adopts the existing equipment, and the operation is simple, so that the method is suitable for industrial production.

Description

technical field [0001] The invention relates to the field of alloy materials, in particular to a heat-resistant low-smoke halogen-free flame-retardant PC / ABS alloy material and a preparation method thereof. Background technique [0002] Blending polycarbonate (PC) and acrylonitrile-butadiene-styrene copolymer (ABS) in a certain proportion to make PC / ABS alloy is the earliest industrial production, currently the most mature, the most widely used and the largest output A PC modified product, this type of alloy can combine the excellent properties of the two: on the one hand, it can improve the heat resistance, impact resistance and tensile properties of ABS, and replace ABS in high-performance fields; on the other hand, it can reduce the PC It is a polymer alloy with comprehensive performance by reducing the cost and melt viscosity, improving its processing performance, and reducing the sensitivity of product internal stress and impact strength to product thickness. [0003] ...

AI Technical Summary

Problems solved by technology

[0006] 1. General flame retardant materials generate a large amount of smoke during combustion, and release toxic, corrosive, and carcinogenic gases. The smoke spreads quickly and the visibility is low. Once it catches fire, it will cause great problems.

[0007] 2. Brominated flame retardants are being used less due to toxicity, while halogen-free and environmentally friendly phosphorus-based flame retardants will significantly reduce heat distortion temperature and impact strength

The alloy adopts a heat-resistant modifier, which has strong heat resistance, but the amount of smoke is not ideal, and it cannot meet the international environmental standards such as the German VDE 0472 (815) with a smoke density of less than 400.

[0010] Combining the existing PC / ABS alloys, it is difficult to achieve a comprehensive balance in terms of heat resistance, low smoke, and high-efficiency flame retardancy. Therefore, it is necessary to develop a PC / ABS alloy with high heat resistance, low smoke, and high-efficiency halogen-free flame retardancy. ABS alloy material

Images