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Low-cost and low-temperature sintered piezoelectric resistor silver paste and preparation method thereof

A varistor, low-temperature sintering technology, applied in varistor, resistor, resistor manufacturing, etc., can solve the problems of high sintering temperature and large amount of precious metal silver, and achieve the effect of strong adhesion

Active Publication Date: 2018-03-13
CAIHONG GRP ELECTRONICS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a low-cost low-temperature sintered varistor silver paste and its preparation method, which solves the problems of high sintering temperature and large amount of precious metal silver, improves the performance of the paste, and greatly reduces the production of devices. cost characteristics

Method used

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  • Low-cost and low-temperature sintered piezoelectric resistor silver paste and preparation method thereof
  • Low-cost and low-temperature sintered piezoelectric resistor silver paste and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Accurately weigh various raw materials with a balance with an accuracy of 0.01g:

[0037] step one:

[0038] Weigh 30g of glass powder, 10g of titanium powder (surface treatment before use) and stir it evenly;

[0039] Step two:

[0040] Weigh 300g of silver micropowder A and 200g of silver micropowder B, 50g of silver micropowder C, pour the three kinds of silver powder into the mixer and halve it evenly;

[0041] Step three:

[0042] Weigh 350g of organic binder, 50g of diluent, and 10g of additive and add in the mixer together and mix with the silver powder obtained in step 2 for 30min again;

[0043] Step four:

[0044] Start the three-roller mill, and carry out rolling according to the following conditions:

[0045] 1) The pressure of the three-roller machine is controlled at 20 bar, and the gap conditions are as follows, and the uniformly mixed materials are added to the three-roller machine for pre-mixing, and the time is 15 minutes;

[0046] Gap ①...

Embodiment 2

[0055] Accurately weigh various raw materials with a balance with an accuracy of 0.01g:

[0056] step one:

[0057] Weigh glass powder 35g, titanium powder 30g (surface treatment before use) and stir it evenly;

[0058] Step two:

[0059] Weigh 400g of silver micropowder A and 200g of silver micropowder B, 50g of silver micropowder C, pour the three kinds of silver powder into the mixer and halve it evenly;

[0060] Step three:

[0061] Weigh 300g of organic binder, 25g of diluent, and 25g of additives and add them together to the mixer and mix with the silver powder in step 2 for another 30min;

[0062] Step four:

[0063] Start the three-roller mill, and carry out rolling according to the following conditions:

[0064] 1) The pressure of the three-roll machine is controlled at 20bar, and the gap conditions are as follows. Add the uniformly mixed materials to the three-roll machine for pre-mixing, and the time is about 15 minutes.

[0065] Gap ①

[0066]2) The...

Embodiment 3

[0074] Accurately weigh various raw materials with a balance with an accuracy of 0.01g:

[0075] step one:

[0076] Weigh 40g of glass powder, 15g of titanium powder (surface treatment before use) and stir it evenly;

[0077] Step two:

[0078] Weigh 350g of silver micropowder A and 200g of silver micropowder B, 50g of silver micropowder C, pour the three kinds of silver powder into the mixer and halve it evenly;

[0079] Step three:

[0080] Weigh 300g of organic binder, 35g of diluent, and 10g of additives and add them into the mixer together with the silver powder in step 2 and mix for 30min again;

[0081] Step four:

[0082] Start the three-roller mill, and carry out rolling according to the following conditions:

[0083] 1) The pressure of the three-roll machine is controlled at 20 bar, and the gap conditions are as follows. Add the uniformly mixed materials to the three-roll machine for pre-mixing, and the time is about 10 minutes.

[0084] Gap ①

gap②...

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Abstract

The invention relates to low-cost and low-temperature sintered piezoelectric resistor silver paste and a preparation method thereof. The preparation method comprises the steps of accurately weighing various materials such as 30-70 parts of silver micro powder A, 20-30 parts of silver micro powder B, 5-20 parts of silver micro powder, 2-6 parts of glass powder, 1-3 parts of titanium powder, 1-3 parts of additive, 1-5 parts of organic diluent and 1-5 parts of organic binding agents, and performing uniform stirring; and performing rolling. The preparation method has the characteristics that the application performance of the paste is improved and the device production cost is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of varistor silver paste, in particular to a low-cost low-temperature sintered varistor silver paste and a preparation method thereof. Background technique [0002] Varistors are used in a wide variety of applications, from handheld electronics to industrial equipment, and come in a wide variety of specifications and sizes. With the widespread use of handheld electronic products, especially mobile phones, laptop computers, PDAs, digital cameras, medical instruments, etc., the speed of the circuit system is required to be higher, and the operating voltage is required to be lower. meet the requirements of smaller size and higher performance. The existing slurry has a high sintering temperature and a large amount of precious metal silver. Contents of the invention [0003] The invention provides a low-cost low-temperature sintered varistor silver paste and its preparation method, which solves the problems o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/22H01B13/00H01C7/10H01C17/00
CPCH01B1/22H01B13/00H01C7/10H01C17/00
Inventor 樊钊锋
Owner CAIHONG GRP ELECTRONICS CO LTD
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