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Why Resin Manhole Cover is Strong Toughness

Why Resin Manhole Cover is Strong Toughness
Resin Manhole Cover is made of unsaturated resin as matrix material and continuous glass fiber as reinforcing the material. Because of the pot bottom structure adopted in the structure, the stress is average, and the application of continuous fiber reinforcement, it does not need reinforcing steel bars. The materials are all composite materials. The bearing capacity of resin well cover and its later bearing capacity are guaranteed. From the point of view of capability, the service life is longer; the resin manhole cover is laminated and made of wear-resisting and aging-resisting materials in the open air. From the point of view of rolling resistance and aging resistance, the service life is longer. Continuous fiberglass reinforcement is used in the lower part, which can make the resin well cover have enough bearing capacity, so no reinforcement is needed.
Resin manhole caps are divided into BMC and SMC manhole caps.
BMC materials are molded in clusters. Its main raw materials are short cut glass fibers, unsaturated resins, fillers) and various additives, which are fully mixed into a mass of prepreg. Because BMC molding plastics have excellent electrical properties, mechanical properties, heat resistance, chemical corrosion resistance, and adapt to various molding processes, they can meet the performance requirements of various products and are widely used in automobile manufacturing, railway transportation, building accessories, mechanical and electrical products, and other fields.
SMC composites are sheet molding plastics. The main raw materials are long glass fibers, unsaturated resins, low shrinkage additives, fillers, and various additives. SMC composites and their SMC molded products have excellent electrical insulation, mechanical properties, thermal stability, and chemical corrosion resistance. So SMC products are widely used.
The trend of development is that SMC composites will eventually replace BMC materials.

resin manhole cover

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