What is composite manhole cover and what composite material is used?

What is composite manhole cover and what composite material is used?

Composite manhole cover is a kind of manhole cover made of all kinds of composite materials. Its manufacturing technology is very different from cast iron manhole cover, such as carbon fiber manhole cover, carbon fiber manhole cover is mainly used to improve the strength and load performance of manhole cover. We generally know that there are many states of existence of carbon elements, because of the different atomic structure arrangement, its physical properties are also very different, there are BMC manhole covers, SMC manhole covers,etc, these belong to the category of composite manhole covers.

Because of this characteristic of composite manhole cover and resin manhole cover, it plays a good role in environmental protection. This is mainly reflected in two aspects, one is the acquisition of raw materials, because the raw materials of the composite manhole cover use a large number of waste materials, thus saving a huge cost of disposal of waste materials.

On the other hand, because the composite manhole cover mainly uses the change of temperature and pressure to achieve the goal in the production process, thus avoiding the air pollution caused by a large number of chemical reactions. Of course, no industrial production can achieve zero pollution, how to reduce and reduce pollution is the most realistic solution. With the increasing demand for manhole cover products, how to reduce the pollution in the production process becomes a more important course.

1. Fiber-reinforced thermosetting composites based on unsaturated polyester resin, also known as mass moulding materials (DMC), are made of pressing molding technology and are a new type of environmental protection cover .The composite manhole cover adopts high temperature and high pressure primary molding technology, high polymerization, high density, good impact resistance and tensile strength, and has the advantages of wear resistance, corrosion resistance, no rust, no pollution, no maintenance and so on.

The value of composite manhole cover :

Composite manhole cover with its unique advantages, gradually into our city life. Streets and alleys, urban main roads, garden district, underground garage, factory workshops and so on, all have its trace everywhere. Because the  composite has strong designability, according to the different intention of the user, different requirements pattern or color according to the user’s different intention and different request, once the product is in place with the infrastructure, its overall image will also be more beautiful, and more coordinated with the surrounding environment.

The composite manhole cover can be so popular that its comprehensive performance and economic index will not be lower than that of cast iron manhole cover, and it can also solve the problem of cast iron well cover theft. It can also reduce the consumption of resources and have important economic and social value. composite manhole covers have the advantages of light weight, high strength, simple molding, low noise, good chemical corrosion resistance, acid and alkali resistance and good appearance, etc. They have the same advantages as cast iron manhole covers. Composite inspection manhole covers have fine surface pattern design, bright and adjustable color, beautify the city environment, to use, light weight, resin inspection manhole covers have no recycling value, natural theft prevention, resin inspection manhole covers through science Formula, advanced technology, perfect technical equipment so that the product can be used in °C—100°C -50 environment. Acid and alkali resistance, corrosion resistance, wear resistance, vehicle rolling resistance, long service life, in line with composite manhole cover standards.

SMC manhole covers are the abbreviation of Sheet molding compound manhole covers, which are namely sheet molding compound plastic. It’s made by the SMC special yarns, unsaturated resin, low shrinkage additives, fillers and various additives composition.