Mixed organic solvent for preparing high-temperature sintered conductive paste

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...

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