Flame-retardant PCABS composition

Abstract

The invention provides a flame-retardant PCABS composition. The material is prepared from the following raw materials in percentage by mass. The polycarbonate composition is prepared from, by weight,50%-80% of polycarbonate (PC), 5%-16% of terpolymer (ABS) of acrylonitrile (A)-butadiene (B)-styrene (S), 5%-10% of flexibilizer, 1%-5% of synergistic flame retardant, 0.1%-2% of synergistic flexibilizer, 3%-15% of flame retardant and 0.1%-2% of anti-dripping agent. According to the flame-retardant PCABS composition, through extrusion production of YBL-ABS, reduction of material performance can beeffectively avoided; the synergistic flame retardant and the phosphazene flame retardant are added, so that the toughness of the material is not influenced while the flame retardant property is improved, the rigidity is improved, and the physical property and the flame retardant property of the material are prevented from being degraded at high temperature and high humidity. The synergistic toughening agent can neutralize alkaline substances in the material, so that PC degradation caused by the alkaline substances at high temperature is avoided; in addition, the processing mode is simple, industrialization is easy to achieve, and the method can be widely applied to industries such as automobiles, refrigerators, televisions and new energy.

Description

technical field [0001] The invention relates to the technical field of polymer modification, in particular to a flame-retardant PCABS composition and a preparation method thereof. Background technique [0002] PC is a thermoplastic engineering plastic with excellent physical and mechanical properties. It has excellent transparency and flame retardancy, and has a wide range of applications; Poor solvent, easy to decompose when exposed to water at high temperature and other shortcomings, to a certain extent limit its scope of use. Generally, through modification technology, selecting the appropriate type of ABS can reduce the internal stress of the material and improve the toughness of the material; add an impact modifier to improve the toughness of the material and improve the compatibility of the PC phase and ABS; synergistic flame retardant However, due to the introduction of dispersants or other additives during the synthesis of ABS and impact modifiers, after the flame-r...

AI Technical Summary

Problems solved by technology

[0002] PC is a thermoplastic engineering plastic with excellent physical and mechanical properties. It has excellent transparency and flame retardancy, and has a wide range of applications; Poor solvent resistance, easy to decompose when meeting water at high temperature, etc., limit its application range to a certain extent

Generally, through modification technology, selecting the appropriate type of ABS can reduce the internal stress of the material and improve the toughness of the material; add an impact modifier to improve the toughness of the material and improve the compatibility of the PC phase and ABS; synergistic flame retardant However, due to the introduction of dispersants or other additives during the synthesis of ABS and impact modifiers, after the flame-retardant PC / ABS composition is made, due to the characteristics of the PC molecular structure, These small molecules are detrimental to the properties of the material, especially for the retention rate of the properties of the material after boiling.

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