Preparation method of rare earth high-temperature carbon paste for microcrystalline glass plate

Abstract

The invention discloses a preparation method of rare earth high-temperature carbon paste for a microcrystalline glass plate. The rare earth high-temperature carbon paste comprises combination of a solid-phase component and an organic binder, wherein the ratio of the solid-phase component to the organic binder is (60-80):(20-40), wherein the solid-phase component comprises graphite carbon powder and high-temperature lead-free glass powder, high-temperature lead-free glass powder comprises lead-free glass neutralized rare earth materials, the ratio of the high-temperature lead-free rare earth glass to the graphite carbon powder is (60-80):(20-40), the particle sizes of the high-temperature lead-free rare earth glass and the graphite carbon powder are both smaller than 1 [mu]m, and the viscosity of the rare earth high-temperature carbon paste in various proportions is 100-200 mPas. Compared with traditional carbon paste, the rare earth high-temperature carbon paste has the advantages of being high in temperature, environmentally friendly, high in use temperature, adjustable in sheet resistance and excellent in firing characteristic, can be directly smeared on the surface of a microcrystalline glass plate, does not corrode the microcrystalline glass plate in a high-temperature state, and greatly guarantees the attractiveness and the use effect of the glass.

Description

technical field [0001] The invention relates to the technical field of rare-earth high-temperature carbon paste, in particular to a preparation method of rare-earth high-temperature carbon paste for a glass-ceramic plate. Background technique [0002] In the field of electric heating, the new type of heating element requires small volume, high power, large surface heat load, low enthusiasm, high thermal efficiency, low power consumption, fast heat start, uniform temperature field, and no heating. Electromagnetic pollution, green, environmental protection, safe and reliable. Electronic paste is the basic material for the manufacture of thick film components. It is a paste made of solid powder and organic solvents that are mixed uniformly by three-roll rolling. In the field of thick film circuit technology, traditional substrates include ceramic substrates and metals, both of which have their limitations. At present, the carbon paste used at home and abroad as a thick film r...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for preparing rare earth high-temperature carbon paste for glass-ceramics, which has the advantage of high practicability, and solves the problem that the existing carbon paste used as thick film resistors has a relatively low temperature and cannot Applied to glass-ceramic plates, the slurry above 200°C is easy to corrode the glass, which affects the appearance and use effect of the glass