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Composition for preparing NTC thermistor chip and NTC thermistor prepared from composition

A thermistor chip and thermistor technology, applied in the direction of resistance manufacturing, resistance terminals/electrodes, resistors, etc., can solve the problem of not being able to meet the requirements of long-term use of high-temperature equipment, thermistor strength is not high, and the stability is not stable Good and other problems, to achieve good protection effect, good consistency of resistance value, high B value effect

Inactive Publication Date: 2022-01-07
JURONG BOYUAN ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing thermistors need to work in a high temperature environment for a long time. Generally, they work for 1000 hours in a high temperature environment, and the resistance value deviation of the resistor reaches about 5%-6%. The stability is not good, so it cannot meet the requirements of high temperature equipment. Requirements for long-term use; and the overall strength of the existing thermistor is not high, and it is easy to break due to collision, which affects its use and needs to be improved

Method used

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  • Composition for preparing NTC thermistor chip and NTC thermistor prepared from composition
  • Composition for preparing NTC thermistor chip and NTC thermistor prepared from composition
  • Composition for preparing NTC thermistor chip and NTC thermistor prepared from composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The composition for preparing the NTC thermistor chip is made up of the following raw materials in parts by weight:

[0038] mn 3 o 4 865 copies, Co 3 o 4 35 parts, NiO 230 parts, SiO 2 38 parts, Fe 2 o 3 200 parts, ZrO 2 40 servings.

[0039] A method for making an NTC thermistor with a composition, comprising the steps of:

[0040] Step 1: Weigh a certain amount of Mn in sequence 3 o 4 、Co 3 o 4 , NiO, SiO 2 , Fe 2 o 3 and ZrO 2 The raw materials are mixed to form a raw material powder, and a certain amount of distilled water is added to the raw material powder, and then ball milled, and the ball milling time is 14 hours;

[0041] Step 2: drying the ball-milled raw materials to obtain dried raw materials after ball milling;

[0042] Step 3: add a certain amount of distilled water inside the dried raw material, and perform secondary ball milling; the time of secondary ball milling is 6 hours;

[0043] Step 4: Dry the raw materials after the secon...

Embodiment 2

[0049] The composition for preparing the NTC thermistor chip is made up of the following raw materials in parts by weight:

[0050] mn 3 o 4 870 copies, Co 3 o 4 37 parts, NiO 235 parts, SiO 2 40 parts, Fe 2 o 3 220 parts, ZrO 2 60 servings.

[0051] A method for making an NTC thermistor with a composition, comprising the steps of:

[0052] Step 1: Weigh a certain amount of Mn in sequence 3 o 4 、Co 3 o 4 , NiO, SiO 2 , Fe 2 o 3 and ZrO 2 The raw materials are mixed to form a raw material powder, and a certain amount of distilled water is added to the raw material powder, and then ball milled; the ball milling time is 13 hours;

[0053] Step 2: drying the ball-milled raw materials to obtain dried raw materials after ball milling;

[0054] Step 3: add a certain amount of distilled water to the dried raw material, and perform secondary ball milling; the ball milling schedule is 7 hours;

[0055] Step 4: Dry the raw materials after the secondary ball milling, ...

Embodiment 3

[0061] The composition for preparing the NTC thermistor chip is made up of the following raw materials in parts by weight:

[0062] mn 3 o 4 895 copies, Co 3 o 4 45 parts, NiO 245 parts, SiO 2 45 parts, Fe 2 o 3 180 parts, ZrO 2 50 servings.

[0063] A method for making an NTC thermistor with a composition, comprising the steps of:

[0064] Step 1: Weigh a certain amount of Mn in sequence 3 o 4 、Co 3 o 4 , NiO, SiO 2 , Fe 2 o 3 , ZrO 2 The raw materials are mixed to form a raw material powder, and a certain amount of distilled water is added to the raw material powder, and then ball milled; the ball milling time is 15 hours;

[0065] Step 2: drying the ball-milled raw materials to obtain dried raw materials after ball milling;

[0066] Step 3: add a certain amount of distilled water inside the dried raw material, and perform secondary ball milling; the ball milling time is 8 hours;

[0067] Step 4: Dry the raw materials after the secondary ball milling, ...

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Abstract

The invention discloses a composition for preparing an NTC thermistor chip and an NTC thermistor prepared from the composition. The composition is prepared from the following raw materials in parts by weight: 865 to 895 parts of Mn3O4, 35 to 45 parts of Co3O4, 230 to 245 parts of NiO, 38 to 45 parts of SiO2, 180 to 220 parts of Fe2O3 and 40 to 60 parts of ZrO2. The composition with reasonable proportion is adopted, so that the prepared NTC thermistor is high in resistance value consistency and high in B value, the problem of resistance value drift and even failure after the thermistor is aged in a high-temperature environment for a long time is effectively prevented, the service life of the thermistor is prolonged, meanwhile, a certain proportion of zirconium oxide is added, the flexural strength of the resistor chip can be effectively increased, the problem of low flexural strength of the resistor chip is solved while a low-resistance product is obtained, and the electrical property of the NTC thermistor product is improved.

Description

technical field [0001] The invention relates to the related field of thermistors, in particular to a composition for preparing an NTC thermistor chip and the NTC thermistor produced therefrom. Background technique [0002] A thermistor is a sensor resistor. The typical feature of a thermistor is that it is sensitive to temperature and exhibits different resistance values ​​at different temperatures. According to different temperature coefficients, it is divided into positive temperature coefficient thermistor and negative temperature coefficient thermistor. [0003] Existing thermistors need to work in a high temperature environment for a long time. Generally, they work for 1000 hours in a high temperature environment, and the resistance value deviation of the resistor reaches about 5%-6%. The stability is not good, so it cannot meet the requirements of high temperature equipment. The requirements for long-term use; and the overall strength of the existing thermistor is not...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/01C04B35/622H01C1/02H01C1/14H01C7/04H01C17/00C04B41/88
CPCC04B35/01C04B35/622H01C7/043H01C17/00H01C1/02H01C1/14C04B41/88C04B41/009C04B41/5116C04B2235/3263C04B2235/3277C04B2235/3279C04B2235/3418C04B2235/3272C04B2235/3244C04B2235/96C04B41/4539
Inventor 刘刚王梅凤唐敏高进
Owner JURONG BOYUAN ELECTRONICS
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