PC/PET halogen-free flame-retardant alloy containing recycled resin and preparation method thereof

Abstract

The invention discloses a PC / PET halogen-free flame retarding alloy containing regenerative resin, and a preparation method of the PC / PET halogen-free flame retarding alloy. The PC / PET halogen-free flame retarding alloy comprises the following components in percentage by weight: 5-40% of original PC, 25-63% of regenerative PC, 5-35% of regenerative PET, 5-15% of a toughening agent, 10-20% of a flame retardant, 0.1-0.8% of a flame retardant anti-dropping agent, 0.1-1% of an antioxidant, 0.1-2% of a lubricant, 0.2-3% of an ethylene-methyl acrylic ester copolymer, and 0.2-2% of a GMA-St-AN copolymer. The preparation method comprises the following steps: firstly, sufficiently mixing the regenerative PET, 5-99wt% of the GMA-St-AN copolymer and the ethylene-methyl acrylic ester copolymer so as to prepare master batch; then, sufficiently mixing the master batch with the rest components, and performing eduction, extrusion and pelletization on the mixture so as to obtain the PC / PET halogen-free flame retarding alloy. The halogen-free flame retarding alloy disclosed by the invention not only has excellent physical properties, but also has good heat stability and chemical resistance.

Description

technical field [0001] The invention relates to a composition and a preparation method thereof, in particular to a PC / PET halogen-free flame-retardant alloy containing recycled resin and a preparation method thereof. Background technique [0002] With the continuous and rapid development of the plastic industry, plastic products have been widely used in various industries, but accompanied by an increasing number of plastic waste, resulting in a huge waste of energy, more and more attention has been paid to the recycling of waste plastics . [0003] As we all know, plastic raw materials are chemical products extracted from natural petroleum and are non-renewable natural resources. According to statistics from relevant departments, the annual plastic waste generated by a medium-sized city can meet the raw material needs of 20 small and medium-sized plastic enterprises. Since the vast majority of plastics are non-degradable, they accumulate over time, causing serious white po...

AI Technical Summary

Problems solved by technology

CN102604352A patent description Utilizes styrene-acrylonitrile-glycidyl methacrylate terpolymer to manufacture recycled PET master batches, so as to increase the viscosity of recycled PET and end-block the end groups, increase its molecular weight, stabilize molecular weight distribution and inhibit transesterification , but the compatibility, thermal stability and chemical resistance of PC / PET alloys are not mentioned

Poor chemical resistance often leads to embrittlement, cracking and surface damage of plastic parts

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