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High-resistance carbon oil structure replacing silver paste

A carbon oil, high-resistance technology, applied in the direction of carbon-silicon compound conductors, etc., can solve the problems of silver paste substitutes such as reduced viscosity, poor cohesiveness, and reduced service life, so as to prevent re-agglomeration, improve adhesion, and increase adsorption The effect of action

Active Publication Date: 2022-04-22
深圳恒宝士线路板有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the prior art, there are many studies focusing on the conductivity of silver paste substitutes, but if only the conductivity of the substitutes is considered, it is thought that adding conductive fillers will lead to a decrease in the viscosity of the silver paste substitutes, and then there will be sticking during use. Poor performance and reduced service life, so it is necessary to study a silver paste substitute with excellent conductivity and adhesion

Method used

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  • High-resistance carbon oil structure replacing silver paste
  • High-resistance carbon oil structure replacing silver paste
  • High-resistance carbon oil structure replacing silver paste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A high-resistance carbon oil structure that replaces silver paste, consisting of metal wires 1, low-resistance carbon oil 2, high-resistance carbon oil 3 and solder mask 4, the upper part of the low-resistance carbon oil 2 is coated with high-resistance carbon oil 3, such as Figure 1-2 shown.

[0022] Among them, the low-resistance carbon oil 2 is prepared from the following raw materials in parts by weight: 10 parts of carbon black, 10 parts of graphite, 12 parts of conductive metal powder, 5 parts of new binder, 15 parts of solvent, and 3 parts of additives.

[0023] Among them, the preparation process of the new binder is as follows:

[0024] S1. Add 12 parts by weight of phenol and 15 parts by weight of propylene oxide into 15 parts by weight of acetone solution, heat and stir, and when the temperature rises to 30°C, add 6 parts by weight of tetramethylammonium hydroxide to it, and stir for 3 hours at a constant temperature Afterwards, raise the temperature to 40°...

Embodiment 2

[0039] Compared with Example 1, this embodiment has different components and dosages, and different parameters in the preparation process, specifically:

[0040] A high-resistance carbon oil structure replacing silver paste, consisting of metal wires 1, low-resistance carbon oil 2, high-resistance carbon oil 3 and solder mask 4, the upper part of the low-resistance carbon oil 2 is coated with high-resistance carbon oil 3.

[0041] Among them, the low-resistance carbon oil 2 is prepared from the following raw materials in parts by weight: 15 parts of carbon black, 15 parts of graphite, 18 parts of conductive metal powder, 8 parts of new binder, 25 parts of solvent, and 5 parts of additives.

[0042] Among them, the preparation process of the new binder is as follows:

[0043]S1. Add 15 parts by weight of phenol and 15 parts by weight of propylene oxide into 20 parts by weight of acetone solution, heat and stir, and when the temperature rises to 35°C, add 8 parts by weight of te...

Embodiment 3

[0054] Compared with Example 1, this embodiment has different components and dosages, and different parameters in the preparation process, specifically:

[0055] A high-resistance carbon oil structure replacing silver paste, consisting of metal wires 1, low-resistance carbon oil 2, high-resistance carbon oil 3 and solder mask 4, the upper part of the low-resistance carbon oil 2 is coated with high-resistance carbon oil 3.

[0056] Among them, the low-resistance carbon oil 2 is prepared from the following raw materials in parts by weight: 12 parts of carbon black, 12 parts of graphite, 15 parts of conductive metal powder, 6 parts of new binder, 20 parts of solvent, and 4 parts of additives.

[0057] Among them, the preparation process of the new binder is as follows:

[0058] S1. Add 12 parts by weight of phenol and 12 parts by weight of propylene oxide into 18 parts by weight of acetone solution, heat and stir, and when the temperature rises to 35°C, add 6 parts by weight of t...

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Abstract

The invention belongs to the technical field of conductive carbon oil, and particularly relates to a high-resistance carbon oil structure for replacing silver paste. The metal wire is composed of a metal wire, low-resistance carbon oil, high-resistance carbon oil and a solder mask. The preparation method comprises the following steps: carrying out ring-opening reaction on phenol hydroxyl and epoxy group of epoxypropane under the catalysis of tetramethylamine hydroxide, carrying out addition reaction with formaldehyde by taking ammonia water as a catalyst to generate polyhydroxymethyl phenol, and further dehydrating two hydroxymethyl groups to form an ether bond under heating and alkaline conditions to obtain a polymer. The preparation method comprises the following steps: firstly, preparing copper powder, then performing esterification reaction on the copper powder and N-vinyl pyrrolidone oxidized by acidic potassium permanganate under the catalysis of copper sulfate to obtain the prepared novel binder, and polar lactam groups are contained in molecules of the binder and can be coordinated with atoms on the surface of the copper powder through nitrogen atoms and oxygen atoms to form a tight adsorption layer; other chain segments in the molecules extend to the periphery, so that agglomeration among copper particles is prevented.

Description

technical field [0001] The invention relates to the technical field of conductive carbon oil, in particular to a high-resistance carbon oil structure replacing silver paste. Background technique [0002] In order to continuously meet the requirements of the development trend of small size, light weight, high performance and high functionality of electronic products, electronic components tend to be more small and ultra-thin, and printed circuit boards tend to be more high-precision graphics. It is becoming more and more difficult to arrange and install a large number of components on such a printed circuit board, which requires some capacitors or resistors on the printed circuit board itself. [0003] The carbon oil pattern printed on the PCB is used as a variable resistor, which is used in electric tools or car headlight adjustment, car air conditioning damper, etc. It is widely used for its small size, flexible resistance value, and physical and chemical resistance. In or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/04C08G8/28
CPCH01B1/04C08G8/28
Inventor 张双林姚建军
Owner 深圳恒宝士线路板有限公司