High temperature lead-free carbon paste

A lead-free carbon paste, high temperature technology, applied in conductive materials, conductive materials, non-adjustable metal resistors dispersed in non-conductive inorganic materials, etc., can solve the problems of life attenuation, easy aging, low use temperature, etc. The effect of long service life, strong adhesion and high adhesion strength

Inactive Publication Date: 2011-11-30
TAIYANG ELECTRONICS DONGGUAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the carbon paste used at home and abroad is used as a thick film resistor, and its lead content is very high, some even as high as 70%, which causes great pollution to the environment; and the use temperature is lower than the school, below 200 ℃, more than 200 It is easy to age after ℃, which will reduce the service life and affect the wide application of the product

Method used

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Embodiment Construction

[0024] Below in conjunction with specific embodiment the present invention is described in further detail:

[0025] The high-temperature lead-free rare-earth carbon paste of the present invention is characterized in that it is composed of solid-phase components (graphite carbon powder+high-temperature lead-free rare-earth glass powder) and an organic binder, and the weight percentage of the solid-phase components and the organic binder is (30~ 60): (40-70), the weight percentage of high-temperature lead-free rare earth glass powder and graphite carbon powder in the solid phase components is (30-70): (30-70), and the particle diameters of the solid phase components are all less than 1 μm , After high-temperature sintering, it can be used as a thick film resistor, and the operating temperature can reach 300°C, which improves the service life of the product and brings good economic benefits to the society.

[0026] As a further improvement of the present invention, the high-tempe...

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PUM

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Abstract

The invention relates to a high-temperature lead-free carbon paste and a preparation method thereof, and provides a high-temperature lead-free carbon paste preparation process which is lead-free and environmentally friendly, has high service temperature, adjustable square resistance and excellent firing characteristics. The present invention is composed of solid phase components and organic binder, solid phase components include graphite carbon powder and high temperature lead-free rare earth glass powder, the weight percentage of solid phase components and organic binder is 30~60:70~40, solid phase The weight percentage of high-temperature lead-free rare-earth glass powder and graphite carbon powder in the composition is 30-70:70-30, and the particle diameters of high-temperature lead-free rare-earth glass powder and graphite carbon powder are both less than 1 μm.

Description

technical field [0001] The invention relates to a thick-film resistor paste used on high-temperature-resistant materials such as ceramics, mica, and glass, and in particular to a high-temperature-resistant lead-free rare-earth carbon paste resistor paste and a preparation method thereof. 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 binder mixed uniformly by three-roll rolling. In the field of thick film circuit technology, traditional substrates include ceramic substrates and metal substrates, both of which have their limitations. At p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/00H01B1/18H01B1/24H01B13/00H05B3/14H01C7/00
Inventor 吴胜红邓泰均张宁李京章刘卫东李鹏
Owner TAIYANG ELECTRONICS DONGGUAN
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