Method for preparing composite resin manhole cover through cooperation between non-metal powder of waste circuit boards and polyester resin

Abstract

The invention discloses a method for preparing a composite resin manhole cover through cooperation between non-metal powder of waste circuit boards and polyester resin. According to the invention, non-metal materials of waste printed circuit boards are used as a main raw material for preparation of the manhole cover; the non-metal materials are rich in glass fibers and thermosetting resin, and arereasonably treated and then compounded with unsaturated polyester resin for preparation of the composite resin manhole cover; the unsaturated polyester resin has low viscosity, conducts good infiltration action on the glass fibers in the non-metal powder of waste printed circuit boards, and is rapid in pressure curing; so a prepared cured compound has sufficient toughness and does not crack. Thepreparation method for the manhole cover in the invention is simple and rapid in process, short in production cycle and high in efficiency; since industrial waste is used as a main raw material, production cost is reduced, and environmental protection and energy conservation are facilitated; and the prepared manhole cover is high in bearing capacity, has the characteristics of tight fitting, wearresistance, corrosion resistance, light structure, beautiful appearance, light weight and easy installation, and has been applied in related projects.

Description

technical field [0001] The invention relates to the technical field of manhole cover manufacture, in particular to a method for preparing a composite resin manhole cover by using non-metallic powder of waste circuit boards in cooperation with polyester resin. Background technique [0002] In recent years, the construction of highways and municipal roads in my country has developed rapidly, and the continuous widening of urban roads has led to more and more manhole covers appearing in the middle of the road. However, the existing inspection wells are relatively simple in structure, and various traffic safety issues. The currently used manhole covers are mainly divided into traditional reinforced concrete manhole covers and cast iron manhole covers according to materials, but there are many defects: traditional reinforced concrete manhole covers generally need to be prefabricated, so under the condition of low construction level, it may cause the manhole cover and the road surf...

AI Technical Summary

Problems solved by technology

[0002] In recent years, the construction of highways and municipal roads in my country has developed rapidly, and the continuous widening of urban roads has led to more and more manhole covers appearing in the middle of the road. However, the existing inspection wells are relatively simple in structure, and various traffic safety issues

The currently used manhole covers are mainly divided into traditional reinforced concrete manhole covers and cast iron manhole covers according to materials, but there are many defects: traditional reinforced concrete manhole covers generally need to be prefabricated, so under the condition of low construction level, it may cause the manhole cover and the road surface to be uneven or The well cover does not match the well seat; the cast iron inspection manhole cover is often stolen due to its high recycling value, and there are also problems of bulky structure and difficulty in opening

However, since the strength of the resin polymer-based composite "green manhole cover" is lower than that of the cast iron manhole cover, to achieve the same strength, the thickness of the composite material manhole cover must be increased, but the increase in the thickness of the part will inevitably lead to an increase in materials and costs. Therefore, it is of great practical significance to optimize the raw materials and proportions of composite manhole covers to meet the mechanical performance requirements of the use occasions and minimize the use of materials.