Method for preparing unsaturated polyester cross-linking waste mold plastic

Abstract

The invention relates to a method to prepare moulding plastic from unsaturated polyester crosslinked waste, which comprises the steps: (1) the unsaturated polyester crosslinked waste such as glass fiber reinforced plastic, button plastic, etc. are put into a crushing machine to be crushed into 30 to 200 meshes; (2) the powder of unsaturated polyester crosslinked waste, suitable resin and auxilliary materials are mixed in a suitable scattering equipment such as a kneader to equally scatter the unsaturated polyester crosslinked waste powder and resin and assistant materials, wherein, the powder of unsaturated polyester crosslinked waste accounts for 60-95 percent of the total mass; (3) the mixture got form the step (2) is molded in a polymer moulding equipment such as a platens press in order to produce moulding plastic with unsaturated polyester crosslinked waste contents.

Description

technical field [0001] The invention relates to the technical fields of environment and materials, in particular to a preparation method of unsaturated polyester crosslinked waste molding compound. Background technique [0002] At present, the saturated polyester crosslinking waste mainly comes from the following two aspects, one is FRP products, and the other is handicrafts such as unsaturated polyester represented by button waste. Unsaturated polyester cross-linked polymers represented by FRP, buttons and handicraft cross-linked wastes have their own chemical cross-linked network structure that causes their non-melting properties. Like rubber with a cross-linked structure, they are still One of the most difficult substances to recycle. How to recover and recycle such waste in an environmentally friendly, economical and effective manner has always been the focus of attention of the whole society. [0003] Regarding the treatment of thermosetting resin waste, landfill, com...

AI Technical Summary

Problems solved by technology

Because the thermosetting resin is extremely difficult to decompose, the landfill method not only wastes land resources, but also wastes manpower, material resources and financial resources; the law of combustion greatly pollutes the atmospheric environment and causes serious pollution to the environment; the traditional cracking technology of waste unsaturated polyester is added The value is low, and the combustion produces carcinogenic toxic gases and sewage such as benzene and dioxins (Dioxins), which poses a great threat to humans and ecology, and has been banned in many developed countries.

At the same time, oil is a limited, non-renewable strategic resource, and this method of burying, burning or cracking is actually a great waste of oil resources