Recycled PC (Polycarbonate) and recycled PET (polyethylene terephthalate)-containing halogen-free flame retardant resin composition and preparation method thereof

Abstract

The invention relates to a recycled PC (Polycarbonate) and recycled PET (polyethylene terephthalate)-containing halogen-free flame retardant resin composition and a preparation method thereof. The recycled PC and recycled PET-containing halogen-free flame retardant resin composition comprises the following components by weight percentage: 5 to 50% of native PC, 20 to 63% of recycled PC, 5 to 35% of recycled PET, 5 to 15% of toughener, 10 to 20% of flame retardant, 0.1 to 0.8% of flame-retardant anti-dripping agent, 0.1 to 1% of antioxidant, 0.1 to 2% of lubricant, and 0.2 to 2% of styrene-acrylonitrile-glycidyl methacrylate terpolymer containing 1 to 5% of glycidyl methacrylate and 20 to 33% of acrylonitrile. The preparation method comprises the following steps that: after the components are prepared, the recycled PET, the styrene-acrylonitrile-glycidyl methacrylate terpolymer are fully mixed, led out, subjected to extrusion granulation, and made into masterbatcehs; then the masterbatches and the remaining components are fully mixed, led out, and subjected to extrusion granulation to obtain the recycled PC and recycled PET-containing halogen-free flame retardant resin composition. The recycled PC and recycled PET-containing halogen-free flame retardant resin composition has a higher impact performance and good stability.

Description

technical field [0001] The invention relates to a composition and a preparation method thereof, in particular to a halogen-free flame-retardant resin composition containing recycled PC and recycled PET 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. Petroleum is the lifeblood of modern industry and a non-renewable natural resource. 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. Therefore, recycled plastic is petroleum rec...

AI Technical Summary

Problems solved by technology

CN101338070A patent describes the preparation of a flame-retardant polycarbonate and polyester resin composition modified by a rubber-modified aromatic vinyl copolymer containing epoxy groups, but does not mention the utilization of recycled materials

[0008] Compared with recycled PC, lower molecular weight and wider molecular weight distribution have a greater impact on the performance of recycled PET, and the stability of product performance is poor. It is difficult to achieve relatively stable mechanical properties, which limits the application of recycled PET.

Images