Halogen-free flame-retardant regenerative polystyrene material for household electronic devices and preparation method of halogen-free flame-retardant regenerative polystyrene material for household electronic devices

Abstract

The invention belongs to the technical field of macromolecular plastic recycling and discloses a halogen-free flame-retardant regenerative polystyrene material for household electronic devices.The halogen-free flame-retardant regenerative polystyrene material comprises, by weight, 50-80 parts of PS (polystyrene) recycled materials, 10-40 parts of compound flame retardant packet, 10-20 parts of impact modifiers, 0.2-0.5 part of ultraviolet absorbents, 0.1-0.6 part of antioxidant packet and 0.2-1 part of lubricant, wherein a compound flame retardant is prepared from ammonium polyphosphate, pentaerythritol and modified siliceous earth by compounding.The halogen-free flame-retardant regenerative polystyrene material for the for household electronic devices has the advantages that the fire retardant is well compatible with matrix resin, so that thermal stability of the material is enhanced while material strength is improved; silicon in the siliceous earth plays a synergistic role in a system, so that flame-retardant efficiency is improved greatly; regenerative PS toughness is improved by taking K resin and elastomers as the impact modifiers, and accordingly the prepared regenerative polystyrene material has comprehensive mechanical properties and is less prone to being ignited, little in smoke and fewer in molten drop.

Description

technical field [0001] The invention belongs to the technical field of polymer plastic recycling, and in particular relates to a halogen-free flame-retardant polystyrene recycled material for household electronic devices and a preparation method thereof. Background technique [0002] Today, plastics have become an essential part of people's lives. With the extensive use of plastic materials, countless waste plastics have been eliminated year by year, and the scientific and reasonable disposal of waste plastics has become the focus of people's work. The best way to solve plastic waste is to recycle and reuse resources, such as melt blending regeneration, pyrolysis to recover monomers or incineration to recover energy. The raw materials for polystyrene regeneration and modification mainly involve a large number of scrapped electronic and electrical shells, packaging and expanded polystyrene materials. Through alloying, blending and other technologies, the waste polystyrene mat...

AI Technical Summary

Problems solved by technology

[0003] There are many types of flame retardants, and the more commonly used ones are still halogen flame retardants. The main reason is that the flame retardant effect is good and the amount added is small. The human body and the surrounding environment have a certain impact. Therefore, smoke-suppressing, halogen-free, and flame-retardant polymer materials have become the hotspots of recent research.