Internal surface coating of conveying device for hot melt polyethylene plastic and preparation method thereof

Abstract

The invention provides an internal surface coating of a conveying device for hot melt polyethylene plastic, comprising a fixed supporting layer, a heat-insulation layer, a vacuum layer and an internal layer, wherein the fixed supporting layer is mainly an alloy layer, the heat-insulation layer is a polystyrene foam plate, the internal layer is a carbon end layer, cylindrical supporting columns are alternately arranged in the vacuum layer, and the upper and lower surfaces and the supporting columns of the vacuum layer are all silvered. The coating has a good heat insulation effect, makes sure internal environment stabilization of the conveying device, avoids light influence, avoids the hot melt polyethylene plastic being adhered in the internal layer, and reduces flow resistance. A preparation method of the coating is processed and fixed layer by layer from the internal layer to the external layer, has strong connection structure stability, and is easy to control parameters of each layer.

Description

technical field [0001] The invention relates to an inner surface coating of hot-melt polyethylene plastic conveying equipment and a preparation method thereof. The coating has a strong heat-insulating function and prevents hot-melt polyethylene plastic from hanging on the wall, and belongs to the field of chemical industry. Background technique [0002] The main active ingredient of many plastic products is polyethylene. Before the plastic product is formed, the plastic needs to be melted to form a liquid form. The raw material of the plastic product is melted into a liquid in the hot melt box and sent to the thermoplastic Equipment to form plastic molds or products. There must be strict insulation requirements for the transmission equipment, and to prevent hot-melt plastic from adhering to the inner wall of the equipment. The inner wall of the current transmission equipment will always adhere to the hot-melt plastic, which must be cleaned regularly with a cleaning agent, ...

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Problems solved by technology

There must be strict heat preservation requirements for the transmission equipment, and to prevent the hot-melt plastic from adhering to the inner wall of the equipment. The inner wall of the current transmission equipment will always adhere to the hot-melt plastic, which must be cleaned regularly with a cleaning agent, and the equipment must be periodically shut down for cleaning. After the equipment is shut down, when it is used again, it must be preheated to make the internal environment of the equipment reach the state where the hot-melt plastic can be conveyed normally. The temperature is usually above 150°, which consumes a lot of heat and is not conducive to continuous industrial production. People I have been studying a method that can prolong the shutdown cleaning cycle of hot melt plastic conveying equipment, but there is no better implementable method at present

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