Preparation method of condensed ring structure-containing crosslinker type isomeric crosslinked and modified recycling ABS (acrylonitrile-butadiene-styrene)

Abstract

The invention relates to condensed ring structure-containing crosslinker type isomeric crosslinked and modified recycling ABS (acrylonitrile-butadiene-styrene) and a preparation method thereof, and relates to ABS and a preparation method thereof. A crosslinker with high crosslinking temperature is applied to the recycling and modifying of the ABS. A specific modifying method comprises the following steps of firstly, drying the recycling ABS for 6 to 8h by a blower at the temperature of 80 DEG C; melting a condensed ring structure-containing crosslinker, the dried recycling ABS, an initiator, a catalyst, an antioxidant and a water producing agent, mixing, extruding and granulating, so as to obtain a micro-crosslinking master batch; putting into a universal crushing machine, and then putting into a planetary ball grinder to grind until the particle size of the micro-crosslinking master batch is 10 to 50mum; then, putting the dried recycling ABS, the micro-crosslinking master batch, a toughener and an inorganic filler into a high-speed mixer to mix for 4 to 6min according to a weight ratio; extruding by a double-screw extruder at the temperature of 180 to 240 DEG C, and granulating, so as to obtain the regenerated ABS with an isomeric structure.

Description

technical field [0001] The invention relates to an ABS and a preparation method thereof, in particular to a homoisomeric crosslinking modified recycled ABS containing a fused ring structure crosslinking agent and a preparation method thereof. Background technique [0002] ABS is a thermoplastic polymer material with high strength, good toughness and easy processing and molding. It is a terpolymer composed of acrylonitrile, butadiene and styrene. ABS organically unifies the various properties of PS, SAN, and BS, and has excellent mechanical properties of toughness, hardness, and rigid phase balance. It is widely used in industrial fields such as machinery, automobiles, electronic appliances, instrumentation, textiles, and construction. It is a thermoplastic engineering plastic with a wide range of uses, but the unmodified recycled ABS resin has low strength, low elongation, and poor heat resistance. These shortcomings limit its application in many fields, so it is often used ...

AI Technical Summary

Problems solved by technology

ABS organically unifies the various properties of PS, SAN, and BS, and has excellent mechanical properties of toughness, hardness, and rigid phase balance. It is widely used in industrial fields such as machinery, automobiles, electronic appliances, instrumentation, textiles, and construction. It is a thermoplastic engineering plastic with a wide range of uses, but the unmodified recycled ABS resin has low strength, low elongation, and poor heat resistance. These shortcomings limit its application in many fields, so it is often used in actual use. Further optimize the performance of recycled ABS by adjusting the modifier and processing technology

[0003] The invention patent application with the Chinese patent publication number CN105237936A uses a cross-linked homogeneously reinforced and toughened ABS material and its preparation method, and the decomposition temperature of the cross-linking agent dicumyl peroxide used is about 120°C It cannot withstand high temperature, which does not match the melting temperature of ABS, and its effect of initiating ABS crosslinking is limited, and the performance of regenerated ABS after modification also needs to be improved, so it is necessary to find a high temperature resistant crosslinking agent for ABS crosslinking Modification, so as to achieve the purpose of strengthening and toughening ABS by homogeneous cross-linking method

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