The composite well cover has high strength, low price and beautiful appearance. It can be colored at will, easy to install, maintain and identify. In the next three to five years, China will gradually replace the composite manhole cover, which has a great market potential.
The composite well cover has high strength, low price and beautiful appearance. It can be colored at will, easy to install, maintain and identify. In the next three to five years, China will gradually replace the composite manhole cover, which has a great market potential. Its advantage is that it does not use steel frame reinforcement, but glass fiber composite reinforcement, which belongs to GRC products. Therefore, it has the advantage of not being affected by the rising price of steel. Because it does not contain any iron, it is more secure than stone plastic and fiber concrete manhole covers. Its comprehensive performance is between stone plastic well cover and concrete well cover, which is better than concrete; it can be used in the occasion of high technical requirements for well cover.
Fiber reinforced materials are widely used in composite materials. For example, carbon fiber and epoxy resin composite material, its specific strength and specific modulus are several times larger than steel and aluminum alloy, but also has excellent chemical stability, friction and wear resistance, self lubrication, heat resistance, fatigue resistance, creep resistance, noise reduction, electrical insulation and other properties. When graphite fiber is compounded with resin, the expansion coefficient is almost zero. Another characteristic of fiber reinforced materials is anisotropy, so the arrangement of fibers can be designed according to the strength requirements of different parts of the product. Aluminum matrix composites reinforced with carbon fiber and silicon carbide fiber can still maintain enough strength and modulus at 500 ℃.