Composite manhole cover manufacturers tell you the scope and use of composite manhole covers
作者： 盐城市锦阳道路器材有限公司点击： Release Date: 2018-08-09 Author: Jinyang Road Equipment Co., Ltd. Yancheng click:
The composite material molding process is flexible, and its structure and performance have strong designability. Manufacture of various components by one-shot molding method can improve the structural strength, and the performance of different parts of the component can be improved by the type of fiber and the design of different arrangements. By adjusting the composition, composition, and arrangement of each component of the composite material, the component can not only withstand different forces at different positions, but also can be made into a composite multifunctional product with contradictory properties such as rigidity, toughness and plasticity. These are advantages that traditional materials do not have. In the application technology of composite evacuation platforms and cable supports, the "designability" of composite material properties plays a large role.
However, the corrosion resistance of the original metal materials has always been difficult to solve. For example, various metal cable supports and components are corroded by humid environments, acid rain, salt spray, and the like. When it is applied to the underground environment with obvious marine climate in Guangzhou, its corrosion hazard is more obvious. In addition, the stray current corrosion of subway engineering greatly reduces the service life of metal materials.
The composite manhole cover has high strength, low price and beautiful appearance. It can be arbitrarily colored, convenient for installation, maintenance and identification. Because it has no recycling value, it completely solves the problem of theft prevention. In the next three to five years, China will gradually switch to composite manhole covers , which has unprecedented market potential.
Among the composite materials, fiber reinforced materials are the most widely used and the most used. Its characteristics are small specific gravity, large specific strength and specific modulus. For example, carbon fiber and epoxy resin composite materials have specific strength and specific modulus that are several times greater than steel and aluminum alloys. They also have excellent chemical stability, friction reduction and wear resistance, self-lubrication, heat resistance, fatigue resistance, and durability. Creep, noise reduction, electrical insulation and other properties. Composite of graphite fiber and resin can obtain a material with an expansion coefficient almost equal to zero. Another feature of fiber reinforced materials is anisotropy, so the fiber arrangement can be designed according to the strength requirements of different parts of the product. The aluminum-based composite material reinforced with carbon fiber and silicon carbide fiber can still maintain sufficient strength and modulus at 500 ° C.