Bicyclic caged phenyl phosphate silicone modified flame-retardant PC/ABS (polycarbonate/acrylnitrile-butadiene-styrene) alloy and preparation method thereof

Abstract

The invention discloses a bicyclic caged phenyl phosphate silicone modified flame-retardant PC / ABS (polycarbonate / acrylnitrile-butadiene-styrene) alloy and a preparation method thereof. The flame-retardant PC / ABS alloy is prepared from the following raw materials in percentage by mass: 55-60% of polycarbonate, 20-25% of an ABS copolymer, 7-9% of phosphate, 5-7% of bicyclic caged phenyl phosphate silicone, 5-7% of a polydimethylsiloxane-styrene-methyl methacrylate copolymer, 0.3-0.5% of an anti-dripping agent and 0.2%-0.4% of an antioxidant. The flame retardant rating of the flame-retardant PC / ABS alloy disclosed by the invention is UL94V-0@1.6mm, the heat deflection temperature is above 92 DEG C, the notched impact strength is above 31kJ / m<2>, and the melt flow rate is above 16g / 10min. The flame-retardant PC / ABS alloy has the advantages of high flame retardant rating, good heat resistance, excellent mechanical properties and good processing fluidity.

Description

technical field [0001] The invention relates to a flame-retardant polycarbonate / styrene-butadiene-acrylonitrile copolymer (PC / ABS) alloy material, in particular to a double-ring cage-shaped phosphate ester siloxane flame-retardant PC / ABS alloy material and its preparation The method belongs to the technical field of polymer material modification. Background of the invention [0002] PC has the advantages of high impact strength, thermal stability and insulation performance. ABS has good chemical resistance and excellent forming and processing performance. The PC / ABS alloy obtained by blending the two has the advantages of both. It has good comprehensive performance, so it is widely used in the manufacture of electrical and electronic parts and auto parts. Because such applications require high heat resistance, flame retardancy and mechanical strength of materials, and PC / ABS alloys have poor flame retardancy, especially alloys with a high proportion of ABS are easy to burn,...

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Problems solved by technology

[0003] Aiming at the problems of reducing the thermal deformation temperature and fluidity of PC / ABS alloy materials in the existing flame retardant modification technology, the present invention provides a phenyl bicyclic compound with high flame retardant performance, heat resistance and mechanical properties and excellent comprehensive performance. Cage-shaped phosphate ester siloxane flame-retardant PC / ABS alloy material and its preparation method. When the flame-retardant grade of the alloy reaches UL94V-01.6mm, the limiting oxygen index is over 33%, and the heat distortion temperature is over 92°C.

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