Industrializable waste thermosetting plastic regeneration process and equipment based on mechanical and physical method

Abstract

The invention discloses an industrializable waste thermosetting plastic regeneration process and equipment based on a mechanical and physical method. The invention is characterized in that: firstly, waste thermosetting plastics are cleaned and dried to obtain a raw material; secondly, the raw material is crushed to obtain a blocky standby material; finally, the blocky standby material is placed in a regeneration environment of steam with nitrogen as protection gas and is degraded through the treatment processes of shearing, grinding and stirring in the regeneration environment so as to obtain a degraded regeneration product. The invention enables the scope and approach of cyclic reutilization of thermosetting plastic waste to be developed and provides a novel regeneration method for comprehensive utilization of thermosetting plastic waste which is difficult to regenerate.

Description

technical field [0001] The present invention relates to an industrialized recycling process and equipment for waste and old thermosetting plastics, more specifically, an industrialized recycling process and equipment for waste and old thermosetting plastics based on mechanical physical methods Background technique [0002] Thermosetting plastics are linear or branched before curing. After curing, a three-dimensional network crosslinked structure is formed between molecular chains. Not only can they not be heated and melted, but they cannot be dissolved in solvents. Commonly used thermosetting plastics are plastics made of phenolic, polyurethane, epoxy, unsaturated polyester, etc. and their modified resins. Thermosetting plastics are mainly used in harsh environments such as heat insulation, wear resistance, insulation, and high voltage resistance. They have excellent performance, but thermosetting plastic products are often designed for long-term use, so they are difficult t...

AI Technical Summary

Problems solved by technology

Thermosetting plastics are mainly used in harsh environments such as heat insulation, wear resistance, insulation, and high voltage resistance. They have excellent performance, but thermosetting plastic products are often designed for long-term use, so they are difficult to destroy, and difficult to reuse and recycle. , because thermosetting plastics cannot be melted and plasticized again, recycling is extremely difficult

[0003] At present, there are three recycling methods for waste thermosetting plastics. One is physical recycling, which is to add particles as fillers to new materials to improve material performance. This method only changes the physical form of materials, and the process is simple and the product cost is low. It has good versatility, but its application is narrow, its economic value is not high, and the mechanical properties of the product are greatly reduced; the other is chemical recycling, which converts waste into chemical raw materials or other substances through chemical methods. The process is complicated and suitable for Poor performance and high production cost; another is the energy recovery method, which, like chemical recovery, is prone to produce toxic and harmful substances, causing secondary pollution to the environment and requiring large investment in equipment

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