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High-temperature composite NTC (Negative Temperature Coefficient) resistance material based on metal oxide as well as preparation method and application thereof

A technology of resistive materials and oxides, which is applied to resistors with negative temperature coefficients, grain processing, lighting and heating equipment, etc. The effect of avoiding dust scattering and pollution

Active Publication Date: 2022-04-12
SHANTOU XINCHENG ELECTRON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a high-temperature composite NTC resistance material based on metal oxides and its preparation method and application, aiming at solving the problems of large performance change rate and poor stability of NTC resistance materials under high temperature working conditions

Method used

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  • High-temperature composite NTC (Negative Temperature Coefficient) resistance material based on metal oxide as well as preparation method and application thereof
  • High-temperature composite NTC (Negative Temperature Coefficient) resistance material based on metal oxide as well as preparation method and application thereof
  • High-temperature composite NTC (Negative Temperature Coefficient) resistance material based on metal oxide as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A high-temperature composite NTC resistance material based on metal oxides, comprising the following components in parts by mass: 15 parts of metal oxides, 10 parts of grinding liquid, 0.1 parts of sintering aid, 1 part of binder and 20 parts of solvent, wherein, according to In terms of mass percentage, the metal oxide is composed of 35% cobalt tetroxide, 25% chromium oxide, 15% nickel oxide, 8% cuprous oxide, 12% manganese dioxide and 5% magnesium oxide. The grinding fluid is 15% ethanol aqueous solution; the sintering aid is Bi 2 o 3 -B 2 o 3 ; The solvent is propyl acetate. The binder includes at least one of polyvinyl alcohol, carboxymethyl cellulose, starch and dextrin.

[0037] The above-mentioned preparation method based on metal oxide high temperature composite NTC resistance material comprises the following steps:

[0038] S1, according to the mass percentage, weigh tricobalt tetroxide, dichromium trioxide, nickel trioxide, cuprous oxide, manganese dioxid...

Embodiment 2

[0042] The difference from Example 1 is that the metal oxide-based high-temperature composite NTC resistance material of this example includes the following components by mass: 24 parts of metal oxide, 12 parts of grinding liquid, 0.5 parts of sintering aid, binder 2 parts and 30 parts of solvent.

[0043] The rest are the same as in Embodiment 1, and will not be repeated here.

Embodiment 3

[0045] The difference from Example 1 is that the metal oxide-based high-temperature composite NTC resistance material of this example includes the following components by mass: 30 parts of metal oxide, 15 parts of grinding liquid, 1 part of sintering aid, binder 4 parts and 40 parts of solvent.

[0046] The rest are the same as in Embodiment 1, and will not be repeated here.

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PUM

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Abstract

The invention provides a metal oxide-based high-temperature composite NTC (Negative Temperature Coefficient) resistance material as well as a preparation method and application thereof, and the composite NTC resistance material comprises the following components in parts by mass: 15-30 parts of metal oxide, 10-15 parts of grinding fluid, 0.1-1 part of sintering aid, 1-4 parts of adhesive and 20-40 parts of solvent, the metal oxide is composed of 35%-50% of cobaltosic oxide, 15%-25% of chromic oxide, 5%-15% of nickel sesquioxide, 3%-10% of cuprous oxide, 5%-12% of manganese dioxide and 2%-5% of magnesium oxide. Compared with the prior art, the NTC resistance material solves the problems of high performance change rate and poor stability of the current NTC resistance material under a high-temperature working condition.

Description

technical field [0001] The invention relates to the technical field of resistance, in particular to a metal oxide-based high-temperature composite NTC resistance material and a preparation method and application thereof. Background technique [0002] A negative temperature coefficient (NTC) thermistor is an electronic ceramic material whose resistance decreases with increasing temperature. With the rapid development of science and technology today, NTC thermistors have been applied in many fields and are closely related to people's lives. [0003] NTC thermistor material is the core of the thermistor. Industrial development and market demand have promoted the development of NTC thermistor materials, especially the development of the automotive field, which has prompted the transformation of NTC thermistor materials from low-temperature applications to high-temperature applications. become the needs of industrial development. [0004] However, when the existing NTC resistan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/45C04B35/632C04B35/634C04B35/636C04B35/64H01C7/04F27B5/05F27D1/18B02C23/06B02C17/10
Inventor 陈健武
Owner SHANTOU XINCHENG ELECTRON TECH CO LTD
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