Modifying reclaiming formulation for engineering plastic

Abstract

The invention provides a modified recovery formula of engineering plastic, which essentially comprises the following components calculated by weight proportion: 65-81 proportions of PC / ABS defective material, 5-12 proportions of PC defective material, 1-4 proportions of compatilizer, 4-8 proportions of flexibilizer, 5-10 proportions of brominated micromolecule flame retardant, 1-3 proportions of antimonic flame retardant, 0.1-0.3 proportions of antioxidant and 0.1-0.3 proportions of ultraviolet absorbent. The invention adopts the new toughener and flame retardant and is added with PC defective material to recycle PC / ABS defective material, thus leading the mechanical property and combustion performance of the PC / ABS defective material to meet the requirement of raw material while both the PC defective material and the PC / ABS defective material can be economically recycled. The invention has no additional burden on environment and better economic and social benefits.

Description

technical field [0001] The invention relates to the technical field of plastic modification treatment, in particular to a modified recycling formula for polycarbonate secondary materials and polycarbonate / acrylonitrile-butadiene-styrene copolymer (PC / ABS) secondary materials. Background technique [0002] PC / ABS alloy is a kind of engineering plastic with good comprehensive performance, which has the advantages of PC (Polycarbonate, polycarbonate) and ABS (Acrylonitrile-butadiene-styrene, acrylonitrile-butadiene-styrene copolymer). It has excellent mechanical and thermal properties, good formability and good stress cracking resistance, and is suitable for forming large and thin-walled parts. [0003] PC / ABS alloys are widely used in the automotive industry, household appliances, communication equipment such as mobile phones, office equipment such as calculators and printers, etc. The extensive use of PC / ABS alloys will inevitably produce a large number of inferior materials...

AI Technical Summary

Problems solved by technology

[0005] (1) Disposal by incineration or landfill, but this method is not only uneconomical but also causes environmental pollution, such as incineration will produce harmful gases such as sulfur dioxide, which is the main cause of acid rain

However, the landfill method of PC / ABS is not easy to degrade, which also causes great harm to the environment.

[0006] (2) Simple recovery and granulation of PC / ABS secondary materials without any modification, downgraded to ordinary plastics, although it is better than the first method, it still fails to fully utilize the value of PC / ABS

[0007] (3) Modification and recycling of PC / ABS secondary materials are often used in the industry. When recycling PC / ABS, acid anhydride reactive coupling agents are added to improve mechanical properties, but this can only be applied to mechanical properties and precision of materials. In occasions with low requirements, and after adding acid anhydride, it will corrode the molding equipment and molds and reduce the service life of the equipment