Epoxy resin manhole cover prepared by utilizing waste glass fibers and preparation method of manhole cover

Abstract

The invention discloses an epoxy resin manhole cover prepared by utilizing waste glass fibers and a preparation method of the manhole cover. The manhole cover comprises the following components, in percentages by mass: 86-92.5% of an epoxy resin glass cloth, 6-12% of active calcium, and 1.5-2.8% of a curing agent, wherein the epoxy resin glass cloth comprises the following materials, in percentages by mass: 60-80% of a glass fiber cloth and 20-40% of epoxy resin coating the glass fiber cloth. According to the manhole cover and the preparation method of the manhole cover provided by the invention, the manhole cover comprises the following components, in percentages by mass: 86-92.5% of the epoxy resin glass cloth, 6-12% of the active calcium, and 1.5-2.8% of the curing agent, direct use offormaldehyde is avoided, and compared with the prior art, the method provided by the invention has the beneficial effects of recycling the glass fiber waste, turning the waste into treasure, improvingthe use amount of the waste glass fibers and reducing the use amount of the epoxy resin, thereby reducing the industrial costs; and the produced manhole cover has high strength, abrasion resistance,acid resistance, alkali resistance, flame resistance, insulation, good comprehensive mechanical properties, and long service life, and more importantly, the formaldehyde is not used, so that the manhole cover is green and environmentally friendly.

Description

technical field [0001] The invention relates to an epoxy resin manhole cover using waste glass fiber and a preparation method thereof. Background technique [0002] Glass fiber is a process that uses glass balls or waste glass as raw materials through high-temperature melting, wire drawing, winding, and weaving. Finally, various products are formed. The diameter of glass fiber monofilament ranges from a few microns to more than 20 meters, which is equivalent to 1 / 20-1 / 5 of a hair. Composed of thousands of monofilaments, it is usually used as reinforcing materials in composite materials, electrical insulation materials and heat insulation materials, circuit substrates, etc., and is widely used in various fields of national economy. [0003] Epoxy fiber cloth is made of glass fiber cloth impregnated with epoxy resin as the substrate and hot pressed. The main component of epoxy resin is phenolic resin; phenolic resin is a resin made by polycondensation of phenol and formaldeh...

AI Technical Summary

Problems solved by technology

[0004] However, the manhole covers currently on the market produce too much leftover material and dust during the production process, which not only produces pollution, but also damages the health of workers. Low flame retardancy and insulation, weak comprehensive mechanical properties

[0005] A kind of glass fiber epoxy resin manhole cover and its preparation method applied earlier, need to use too much formaldehyde, will cause harm to the environment, so its production and use will be subject to great restrictions

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