Inorganic resistor thick film and preparing method and application of inorganic resistor thick film

A resistance and inorganic technology, applied in the direction of resistors, non-adjustable metal resistors, circuits, etc., can solve the problems of unfavorable life and health, inapplicability, lead poisoning, etc., and achieve the effects of preventing lead poisoning, increasing the use temperature, and simple operation

Active Publication Date: 2014-01-01
李琴 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

What's more serious is that because the application field of inorganic resistive thick film is directly related to human life, such as electric heaters or cribs, incubators, and far-infrared light wave rooms, the high lead content will greatly increase the probability of people's lead poisoning. Very detrimental to people's life and health
At the same time, such products containing lead are prohibited from being sold and used in the United States, Europe and other countries. With the rapid development of science and technology today, products such as lead-containing inorganic resistor thick film are obviously backward and unsuitable.

Method used

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  • Inorganic resistor thick film and preparing method and application of inorganic resistor thick film
  • Inorganic resistor thick film and preparing method and application of inorganic resistor thick film
  • Inorganic resistor thick film and preparing method and application of inorganic resistor thick film

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preparation example Construction

[0032] The embodiment of the present invention further provides a method for preparing the above-mentioned inorganic resistance thick film, comprising the following steps:

[0033] Step S01, providing raw materials:

[0034] Provide the graphite powder, bismuth oxide, boron oxide, silicon dioxide, zinc oxide, antimony trioxide and strontium carbonate in proportion by weight;

[0035] Step S02, preparing the first mixture:

[0036] Heating and melting the bismuth oxide, boron oxide, silicon dioxide, zinc oxide, antimony trioxide and strontium carbonate, after cooling, grinding the melt to a mesh size below 350, adding the graphite powder and mixing to obtain a first mixture;

[0037] Step S03, preparing the second mixture:

[0038] The first mixture is mixed with the organic carrier in a weight ratio of 65-80:20-35 to obtain a second mixture;

[0039] Step S04, coating, drying and sintering:

[0040] The second mixture is coated on the substrate, dried and sintered to obtai...

Embodiment 1

[0054] Take a rectangular mica sheet with a length of 600mm, a width of 200mm, and a thickness of 0.5mm, and use it as figure 2 base plate 1 shown;

[0055] Then use silver conductive paste to coat a length of 170mm and a conductive electrode with a width of 10mm on the same side of the two short sides of the rectangular substrate, which is figure 2 The conductive electrode referred to in 3) and the lead end indicated in 4 in Figure 1, dry the bottom plate together with the conductive electrode for later use;

[0056] Provide the following formula raw materials:

[0057]

[0058]

[0059] Stir the 6 ingredients in the above formula except graphite powder evenly, melt the mixture at 1200°C for 60 minutes, cool the obtained mixture block and crush it, and then use a ball mill for 48 hours to make the particle size less than 350 mesh powder, then add graphite powder thereinto to obtain the first mixture; then add 120g-150g of liquid organic carrier composed of 95% by weig...

Embodiment 2

[0062] In Example 2, except that the ceramic base plate was used instead of the mica base plate, the experiment was carried out according to the conditions of Example 1, and basically the same results as Example 1 were obtained.

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Abstract

The invention belongs to the field of new materials, and provides an inorganic resistor thick film and a preparing method and application of the inorganic resistor thick film. The inorganic resistor thick film comprises graphite powder, bismuth oxide, boric oxide, silica, antimonous oxide, zinc oxide, strontium carbonate and the like. According to the inorganic resistor thick film, the bismuth oxide serves as the framework material, the boric oxide, silica, the zinc oxide, the strontium carbonate and the like are used in cooperation with the bismuth oxide, the performance of the inorganic resistor thick film is achieved, and meanwhile compared with existing lead oxide, the inorganic resistor thick film has the advantages that the lead content is zero, and people are prevented from getting lead poisoning in the process of producing and using the inorganic resistor thick film and the environment is prevented from being polluted. The using temperature of the inorganic resistor thick film is greatly increased due to the bismuth oxide, and the application range of the inorganic resistor thick film is enlarged. The preparing method of the inorganic resistor thick film is easy to operate, low in cost and very suitable for industrial production.

Description

technical field [0001] The invention belongs to the field of new materials, and in particular relates to an inorganic resistance thick film, its preparation method and application. Background technique [0002] Inorganic resistor thick film has an important application range, and the electrical performance, stability, environmental protection performance and service life of inorganic resistor thick film are the decisive factors of inorganic resistor thick film. At present, the inorganic resistor thick film on the market uses lead oxide as the main component. Lead oxide is indispensable as the skeleton material of the inorganic resistor thick film. Without lead oxide, the film cannot be formed. The content of lead oxide in the inorganic resistor thick film reaches 50%. above. The preparation of this kind of inorganic resistance thick film with high lead content will produce waste water, waste gas and other pollutants. What's more serious is that because the application fiel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01C7/00
Inventor 李琴简伟雄
Owner 李琴
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