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Preparation method of self crosslinking type acrylateresin high-temperature sintering electronic silver paste

An acrylate and high-temperature sintering technology, which is applied in the manufacture of cables/conductors, conductive materials dispersed in non-conductive inorganic materials, circuits, etc., can solve problems such as difficulty in slurry preparation and control, and avoid secondary flow phenomena. The performance is easy to control and the effect of small investment

Inactive Publication Date: 2012-08-22
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high solid content requirements of the thick film electronic silver paste, which is generally above 80%, there is little room for adjusting the performance indicators of the paste by using auxiliary solvents, resulting in difficulties in the preparation and control of the paste.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] First, add 38.0% diethylene glycol butyl ether in a reaction kettle equipped with a condenser, start the stirrer and heat for standby; then 39.0% methyl methacrylate, 5.0% isooctyl acrylate, Add 15.0% glycidyl methacrylate and 3.0% N-methylol acrylamide into the mixing kettle, add 0.1% benzoyl peroxide and stir evenly, and set aside; the diethylene glycol butyl ether in the reaction kettle is heated to 75 ℃, add the above-mentioned mixed monomers dropwise into the reaction kettle, control all the mixed monomers to be added within 3 hours, continue to react for 2 hours, cool and discharge to obtain the cross-linked acrylate resin. In addition, 15.0% of spherical silver powder with a fineness of 3-20 μm, 50.0% of flaky silver powder with a fineness of 3-20 μm, and 15.0% of low-melting lead-free glass powder with a fineness of 3-20 μm were added to the mixer and mixed evenly, and 0.5% of Silane coupling agent KH550, after stirring evenly, add 15.0% of the above-mentioned s...

Embodiment 2

[0028] First, add 85.0% diethylene glycol butyl ether acetate in a reactor equipped with a condenser, start the stirrer and heat for standby; then add 8.0% methyl methacrylate, 2.0% butyl acrylate , 3.0% glycidyl methacrylate, 1.0% N-methylol acrylamide, 1.0% hydroxyethyl acrylate were added to the mixing kettle, and 0.3% azobisisobutyronitrile was added to stir evenly and set aside; to be reacted When the temperature of diethylene glycol butyl ether acetate in the kettle rises to 85°C, add the above-mentioned mixed monomers dropwise into the reaction kettle, control all the mixed monomers to be added within 2.5 hours, continue to react for 1 hour, cool and discharge to obtain self Joint-type acrylate resin. In addition, 35.0% of spherical silver powder with a fineness of 3-20 μm, 35.0% of flaky silver powder with a fineness of 3-20 μm, and 10.0% of low-melting lead-free glass powder with a fineness of 3-20 μm were added to the mixer and mixed evenly, and 0.8% of Silane coupl...

Embodiment 3

[0030] First, add 25.0% of diethylene glycol dibutyl ether and 25.0% of diethylene glycol methyl ether acetate into a reaction kettle equipped with a condenser, start the stirrer and heat for standby; then add 28.0% of methyl Add methyl acrylate, 5.0% ethyl acrylate, 5.0% isooctyl acrylate, 10.0% glycidyl methacrylate, 1.0% N-methylol acrylamide, 1.0% hydroxypropyl acrylate to the mixing tank Add 0.5% benzoyl peroxide, stir evenly, and set aside; when the diethylene glycol ether ester mixed solvent in the reaction kettle is heated up to 88°C, add the above mixed monomers dropwise into the reaction kettle, and control all the mixed monomers within 2 hours. After adding, continue to react for 2 hours, cool and discharge to obtain a self-crosslinkable acrylate resin. In addition, 50.0% of spherical silver powder with a fineness of 3-20 μm, 28.0% of flaky silver powder with a fineness of 3-20 μm, and 5.0% of low-melting lead-free glass powder with a fineness of 3-20 μm were added ...

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Abstract

The invention discloses a preparation method of self crosslinking type acrylateresin high-temperature sintering electronic silver paste. The method comprises the following steps of: firstly, selecting acrylate monomers to prepare self crosslinking type acrylateresin through solution polymerization; then mixing and dispersing superfine silver powder, low-melting-point lead-free glass powder, a surface modifier, an auxiliary agent and a defoaming agent into the prepared self crosslinking type acrylateresin; and repeatedly grinding to prepare electronic silver paste. The method for preparing thehigh-temperature sintering electronic silver paste has the characteristics of simple process, convenience, easy application, no need of special equipment, low investment, convenient control of product properties, and the like.

Description

technical field [0001] The invention relates to a method for preparing self-crosslinking type acrylate resin high-temperature sintered electronic silver paste. Background technique [0002] Electronic paste is an important class of electronic fine chemicals. It can be widely used in many industries such as electronics, information, communication, aerospace, computer, electrical appliance manufacturing, precision components and solar energy. Its manufacturing technology involves related fields such as metallurgy, material, chemical industry, electronic technology and screen printing. Due to the wide range of applications of electronic paste, the wide range of fields involved in research and development, and the high technological content of products, developed countries with the world's industrial level have always paid more attention to the research and development of electronic paste products. [0003] In recent years, with the increasing shortage of conventional energy s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/22H01B13/00H01L31/0224
Inventor 王杰沈良宋锡瑾
Owner ZHEJIANG UNIV
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