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Mixed organic solvent for preparing high-temperature sintered conductive paste

A conductive paste and organic solvent technology, applied in the field of oily organic solvents, can solve the problems of slow volatilization, achieve stable volatilization, improve affinity and good wettability

Active Publication Date: 2020-12-25
CHANGCHUN GOLD RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] High-temperature sintered conductive paste requires the solvent used to have the characteristics of slow volatilization under room temperature printing conditions, stable volatilization during the drying stage, and moderate solvent resistance to organic resins, which are usually difficult to meet with a single solvent

Method used

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  • Mixed organic solvent for preparing high-temperature sintered conductive paste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Made from the following ingredients:

[0024] Ethylene glycol monophenyl ether acetate 60wt%;

[0025] Butyl carbitol acetate 10wt%;

[0026] 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate 5.4wt%;

[0027] Dimethyl adipate 24wt%;

[0028] γ-methacryloxypropyltrimethoxysilane 0.1wt%;

[0029] Silicone oil 1.0wt%;

[0030] Described ethylene glycol monophenyl ether acetate is prepared by following raw material and method:

[0031] The molar ratio of ethylene glycol monophenyl ether and acetic anhydride is 1:1.5, toluene 20wt%, appropriate amount of sulfonic acid molecular sieves;

[0032] Install a water separator 2 and a spherical condenser 3 on the round bottom flask 1, heat the oil bath to the reflux of toluene under the condition of magnetic stirring, and keep the toluene to reflux stably for 8 hours; remove the water separator and install a drier; After cooling to room temperature, it was distilled under reduced pressure to collect the main fraction.

Embodiment 2

[0034] Made from the following ingredients:

[0035] Propylene glycol monophenyl ether acetate 10wt%;

[0036] Butyl carbitol acetate 60wt%;

[0037] 2,2,4-trimethyl-1,3-pentanediol diisobutyrate 1wt%;

[0038] Dimethyl adipate 28wt%;

[0039] γ-methacryloxypropyltrimethoxysilane 0.5wt%;

[0040] Silicone oil 0.5wt%.

[0041] Propylene glycol monophenyl ether acetate of the present invention is prepared by following raw material and method:

[0042] The mol ratio of propylene glycol monophenyl ether and acetic anhydride is 1:1.1, toluene 15wt%, appropriate amount of sulfonic acid molecular sieves;

[0043] Install a water separator 2 and a spherical condenser 3 on the round bottom flask 1, heat the oil bath to the reflux of toluene under the condition of magnetic stirring, and keep the toluene stable reflux for 4 hours; remove the water separator and install a drier; After cooling to room temperature, it was distilled under reduced pressure to collect the main fraction. ...

Embodiment 3

[0045] Made from the following ingredients:

[0046] Propylene glycol monophenyl ether butyrate 35wt%;

[0047] Butyl carbitol acetate 35wt%;

[0048] 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate 5wt%, 2,2,4-trimethyl-1,3-pentanediol diisobutyrate 5wt%;

[0049] Dimethyl adipate 18.2wt%;

[0050] γ-methacryloxypropyltrimethoxysilane 0.3wt%;

[0051] Silicone oil 1.5wt%.

[0052] Propylene glycol monophenyl ether butyrate of the present invention is prepared by following raw materials and method:

[0053] The mol ratio of propylene glycol monophenyl ether and butyric anhydride is 1:1.3, toluene 10wt%, appropriate amount of sulfonic acid molecular sieves;

[0054] Install a water separator 2 and a spherical condenser 3 on the round bottom flask 1, heat the oil bath to the reflux of toluene under the condition of magnetic stirring, and keep the toluene to reflux stably for 2 hours; remove the water separator and install a drier; After cooling to room temperature, it was ...

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Abstract

The invention relates to a mixed organic solvent for preparing high-temperature sintered conductive paste, and belongs to the technical field of oily organic solvents. The mixed organic solvent comprises 10-60 wt% of fatty acid ester containing a phenyl ether structure, 10-60 wt% of butyl carbitol acetate, 0.1-10 wt% of at least one of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, 2,2,4-trimethyl-1,3-pentanediol diisobutyrate, 10-30 wt% of dimethyl adipate, 0.1-0.5 wt% of gamma-methacryloxypropyltrimethoxysilane and 0.5-1.5 wt% of silicone oil. The mixed organic solvent has the advantages that the solvent has the characteristics of good resin solubility, good wettability to metal particles, no volatilization at room temperature, stable volatilization at high temperature and the like, various types of resin commonly used by photovoltaic front silver paste can be well dissolved, and experiments prove that compared with a traditional single solvent system, the solvent is more suitablefor the requirements of silver paste printing and sintering; and the solvent is simple in reaction condition and high high product yield, and has favorable application prospects in the photovoltaic industry and electronic conductive paste related fields.

Description

technical field [0001] The invention belongs to the technical field of oily organic solvents, in particular to a mixed organic solvent for preparing high-temperature sintered conductive paste. Background technique [0002] Oily organic solvents are widely used. The most common aliphatic hydrocarbon solvents are mostly used in coatings and printing inks, while alcohol ester solvents with long carbon chains are mostly used in cosmetics, fragrances, medicines, and electronic pastes. Solvents also play an important role in the metal conductive paste used in the photovoltaic industry. [0003] Metal conductive paste is one of the most important materials in the electronics industry. With the continuous development of the industry, the requirements for the conductivity, printing, welding and other properties of the paste are also increasing. Among them, the front-side silver paste for photovoltaics needs to go through printing, drying, sintering and other steps during its use. I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/22
CPCH01B1/22
Inventor 李雪嵩高健宝尹超刘鹏邢志军
Owner CHANGCHUN GOLD RES INST
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