A new superconducting thermal ceramic film composite material and its preparation method

Abstract

The invention discloses a new superconducting ceramic film composite material and a preparation method thereof, belonging to the technical field of wave-absorbing functional materials. The composite material is prepared from the following raw materials in parts by weight: 20-25 parts of instant sodium silicate , 28-32 parts of crystalline silicon, 4-8 parts of nano-magnesia, 13-17 parts of carbon fiber, 2-5 parts of boron fiber, 2-5 parts of silicate fiber, 8-12 parts of alumina powder, 23-23 parts of deionized water 28 servings. The obtained material is covered on the metal surface and isolated from the external medium to block the external high-temperature oxygen and corrosive substances, effectively protect the metal pipe wall, and has remarkable wave-absorbing performance, generates infrared radiation, and has a good energy-saving effect. It is used in boilers In the field of energy saving and environmental protection, the boiler can operate safely, reduce the friction and explosion of the boiler, reduce the coking of the boiler furnace, and prolong the service life of the boiler.

Description

technical field [0001] The invention relates to the technical field of wave-absorbing functional materials, in particular to a new superconducting heat-conducting porcelain film composite material and a preparation method thereof. Background technique [0002] With the continuous development of society, the types of boilers are also increasing rapidly, such as coal-fired boilers in power plants, fluidized bed boilers, cracking furnaces in Sinopec, steam injection boilers in PetroChina, vacuum heating furnaces, etc. The wear and corrosion of these boilers also revealed the degree of damage to the surface of the water wall of the boiler. During the operation, due to the variety and quality of the fuel, the high temperature corrosion and wear of the boiler caused the tube wall to be significantly thinned, and a tube burst accident occurred. Seriously affect the safe operation of the boiler, and the thermal efficiency of the boiler will also be significantly reduced after long-t...

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Problems solved by technology

The wear and corrosion of these boilers also revealed the degree of damage to the surface of the water wall of the boiler. During the operation, due to the variety and quality of the fuel, the high temperature corrosion and wear of the boiler caused the tube wall to be significantly thinned, and a tube burst accident occurred. Seriously affect the safe operation of the boiler, and the thermal efficiency of the boiler will also be significantly reduced after long-term use, especially when the flue gas with a large concentration directly washes the tube wall, the pyrite powder in the fuel will stick together with the unburned fuel. On the pipe wall, it is decomposed by heat to generate elemental sulfur and iron sulfide. Hydrogen sulfide and sulfur dioxide adhere to the pipe wall, which will sulfide the metal pipe wall and severely corrode the metal pipe wall.