Compound modified expanded perlite-carbonized foamed phenolic resin-based heat-insulation material for forklift engine exhaust tube and preparation method thereof

Abstract

The invention relates to a heat-insulation material for an exhaust tube, and specifically relates to a compound modified expanded perlite-carbonized foamed phenolic resin-based heat-insulation material for a forklift engine exhaust tube and a preparation method thereof. According to the preparation method disclosed by the invention, phenolic resin doped with mesocarbon microbeads and carbonyl iron powder is subjected to foaming treatment at first during a preparation process, so that a carbonization process for the prepared modified phenolic resin foam powder during the subsequent carbonization process is more efficient, the carbonized material is more compact in structure, higher in strength and lower in heat conductivity coefficient; a compound expanded perlite micro-powder adhesive doped with silica sol is good in adhesion capacity and capable of improving the high-temperature stability of the material; the material subjected to the carbonization treatment is uniform and compact in structure, and has the advantages of being light in mass, heat-insulation, environment-friendly and the like; the finished products of heat-insulation plates, heat-insulation sleeves and the like prepared from the material are excellent in heat-insulation effect, efficient and durable, and capable of effectively improving the working environment of a forklift engine.

Description

technical field [0001] The invention relates to a heat insulating material for an exhaust pipe, in particular to a composite modified expanded perlite-carbonized foaming phenolic resin-based heat insulating material for a forklift engine exhaust pipe and a preparation method thereof. Background technique [0002] During the continuous operation of the forklift, the exhaust pipe of the engine will generate a lot of heat. Due to the heat circulation, the temperature of the exhaust pipe will eventually be extremely high. If the heat insulation treatment is not carried out, it will seriously affect the parts around the exhaust system. The common treatment method is to wrap a heat shield made of materials with heat insulation effect outside the exhaust pipe. The common heat insulation materials that make up the heat shield mainly include metal aluminum plates, asbestos cloth, glass fiber cloth, etc. However, these materials have some disadvantages. For example, although aluminum ...

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Problems solved by technology

[0002] During the continuous operation of the forklift, the exhaust pipe of the engine will generate a lot of heat. Due to the circulation of heat, the temperature of the exhaust pipe will eventually be extremely high. If the heat insulation treatment is not carried out, it will seriously affect the parts around the exhaust system. The common treatment method is to wrap a heat shield made of materials with heat insulation effect outside the exhaust pipe. The common heat insulation materials that make up the heat shield mainly include metal aluminum plates, asbestos cloth, glass fiber cloth, etc. However, these materials have some disadvantages. For example, although aluminum materials have good heat insulation effects, their production costs are relatively high and their elongation is limited, while asbestos cloth and glass fiber cloth have short service life, are easily damaged, are not environmentally friendly, and need to be replaced frequently maintenance and other shortcomings, so it is urgent to develop a more efficient composite insulation material