Caigang watts with graphite coating comprises a substrate in the middle layer, and graphite slurry coating formed on both sides. Graphite coating can greatly prolong the service life of Caigang watts, solving the aging, low strength and toughness, flame retardant, heavy weight, difficult installation problems of resin tile; the factory high temperature, poor working environment problems brought by the traditional steel tile; and the problem of currently on the market a large backlog of fine flake graphite, low added value; and effectively increase the indoor heat exchange rate.
Traditional Caigang watts, also known as color tile, is a variety of wave contour plate cold bended by Color coated steel plate. The color is bright and beautiful, but once contacted with acid rain and other inclement weather it becomes rusty scrap, average using age of which is 3-5 years, and thermal conductivity is very low, only 0.041w/mk. All these undoubtedly makes the high-temperature operation in factory a disaster after another. Load bearing capacity of color steel tile is poor, easy to damage,and the material itself is heavy, up to 10-14 kg / square meter,and the installation is also difficult.
The synthetic resin tile produced by two layer coextrusion technology has a better corrosion resistance to a certain extent,and the dead-weight is enhanced. However, because of its limited material, it is easy to aging, and the shear strength and tensile strength compared to the traditional steel color steel tile has been reduced, not combustible fire, low thermal conductivity, heat-sinking capability is not very good.
The micro powder graphite has a large reservation on the market, the application range is small, oversupply, so the color steel tile with graphite coatings can greatly reduce the raw material cost of the product, solving the the problem of fine flake graphite’s low added value, large amount of storage. In addition, the graphite micro particles is small and can be uniformly distributed throughout the graphite slurry system, so coating composite graphite slurry layer and making flake graphite into a fish scale type arrangement can make the corrosion protection and heat conduction of the product achieve optimal performance. The surface quality of the billet is rough, and the adopting billet without surface treatment can not only reduce the cost of the material, but also make the graphite slurry layer and the steel plate bonding more firmly.
Graphite has excellent acid and alkali resistance, corrosion resistance, which can greatly extend the service life of the graphite coated steel tile; the graphite itself is flame retardant, composition of graphite and steel plate can solve the traditional resin tile’s easily aging, low strength and toughness , not flame retardant and so on; in addition, the billet density is far greater than the graphite paste layer density. To ensure the overall strength of billet thickness to meet the product requirements, the reasonable control of the thickness ratio to ensure the quality of the products lightest can solve the traditional tile’s heavy, difficult installation problems; finally, the high thermal conductivity of graphite can effectively increase the indoor heat exchange rate, solving the problem of factory high temperature, bad work environment , the accumulation low added value of a large number of fine flake graphite brought by traditional color steel. The composition of graphite slurry and steel plate coating not only inherited the traditional steel tile’s good mechanical properties and higher strength, but also make up for the traditional steel tile’s disadvantages of easy corrosion, easy loss, easy aging and resin tile, flammable, poor thermal conductivity etc.
Comparwe Caigang watts with graphite coating and the existing color steel tile on the market, the capacity is on the following table. It is shown that Caigang watts with graphite coating has much longer service life than the existing color steel tile, and the flame retardant performance is better, the quality is moderate, the strength toughness is good, and the heat conduction is fast.