Flame-retardant toughening HPVC (polyvinyl with high degree of polymerization)/ABS (acrylonitrile butadiene styrene) composite material and preparation method thereof

Abstract

The invention belongs to the field of engineering plastics and particularly relates to a flame-retardant toughening HPVC (polyvinyl with high degree of polymerization)/ABS (acrylonitrile butadiene styrene) composite material and a preparation method thereof. The preparation method of the flame-retardant toughening HPVC/ABS composite material comprises the following steps: putting 100 parts by mass of HPVC powder, 0.5-3.0 parts by mass of a thermal stabilizer, 0.5-5.0 parts by mass of a plasticizer, 0.2-1.0 part by mass of a lubricant, 0.2-1.0 part by mass of an antioxidant and 5-20 parts by mass of a halogen-free flame retardant into a high-speed mixer and mixing; then, pouring 40-100 parts by mass of ABS resin, 10-40 parts by mass of POE-g-MAH and 5-20 parts by mass of CPE (chlorinated polyethylene) into the mixer and performing secondary mixing to obtain HPVC/ABS mixed materials, pouring the obtained HPVC/ABS mixed materials into a hopper of a twin-screw extruder, and pelletizing after extruding to prepare flame-retardant toughening HPVC/ABS raw material particles. The finally prepared HPVC/ABS composite material has the advantages of flame resistance, smoke suppression, low cost, impact resistance, easiness in processing, and the like, and can be used for preparing various high-strength flame-retardant electrical appliance shells.

Description

technical field [0001] The invention belongs to the field of engineering plastics, and in particular relates to a flame-retardant and toughened HPVC / ABS composite material and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) is a commonly used general-purpose plastic that is widely used in daily life. PVC can be divided into soft PVC, hard PVC and high degree of polymerization PVC (HPVC). The average degree of polymerization of HPVC is above 1700. It has the advantages of high strength, aging resistance, low cost and flame retardancy. However, HPVC has poor thermal stability and poor impact resistance, which limits its application in the engineering field. [0003] Acrylonitrile-butadiene-styrene copolymer (ABS) has the advantages of high strength, good toughness, and easy molding and processing. The blending of ABS resin and HPVC can significantly improve the toughness and molding processability of HPVC. In the process of preparing HPVC...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of poor compatibility of existing PVC and ABS blending systems, poor flame retardancy and smoke suppression performance, the present invention provides a flame-retardant and toughened HPVC / ABS composite material and its preparation method, the purpose of which is to prepare flame-retardant and toughened HPVC / ABS composite materials. And smoke suppression function and high impact HPVC / ABS engineering plastics