Priming coat type acrylic acid ester conductive adhesive and preparation method thereof

An acrylate and adhesive technology, used in conductive adhesives, adhesives, polyurea/polyurethane adhesives, etc., can solve the problems of damaging the mechanical properties of the system, affecting the sizing performance, increasing the viscosity, etc., to promote dispersion and operation. Simple and effective in reducing viscosity of resin system

Active Publication Date: 2015-10-28
东莞优邦材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adding too much conductive filler not only damages the mechanical properties of the system, but also increases the viscosity and affects the sizing performance.

Method used

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  • Priming coat type acrylic acid ester conductive adhesive and preparation method thereof

Examples

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Effect test

preparation example Construction

[0041] A kind of preparation method of primer type acrylate conductive adhesive, the steps are:

[0042] Preparation of the main ingredient:

[0043] (1) Mix 40~65 parts of acrylate monomer containing at least one vinyl group, 10~30 parts of vinyl-terminated prepolymer and 0.1~3 parts of stabilizer, control the temperature below 35°C, and stir evenly;

[0044] (2) Then add 5~30 parts of conductive filler to the resin matrix formed in step 1), stir well, and control the temperature of the system not to exceed 35°C;

[0045] (3) Then add 0.5~3 parts of peroxide initiator, 0.1~3 parts of curing accelerator, 1~5 parts of anti-settling agent in sequence, control the temperature of the system below 35°C, stir well and then defoam under vacuum conditions, Discharge and store in cold storage at 2-8°C.

[0046] Preparation of primer:

[0047] Mix 30~35 parts of activator and 65~70 parts of solvent evenly under nitrogen atmosphere, discharge the material, fill it with nitrogen and seal...

Embodiment 1

[0050] A kind of primer type acrylate conductive adhesive, its formula is composed as follows:

[0051] Main ingredient:

[0052] Hydroxyethyl methacrylate 60 %wt

[0053] Methyl urethane acrylate 15%wt

[0054] p-Benzoquinone 0.3%wt

[0055] EDTA tetrasodium salt 0.1%wt

[0056] Graphene 4.7%wt

[0057] Special Conductive Carbon Black 14%wt

[0058] O-benzoylsulfonimide 1%wt

[0059] Cumene hydroperoxide 1.4%wt

[0060] Fumed silica 3.5%wt

[0061] Primer:

[0062] Ethyl acetate 54 %wt

[0063] Isopropanol 15.99%wt

[0064] Aldehyde amine condensation product 30%wt

[0065] Copper acetylacetonate 0.01%wt

[0066] Performance Testing:

[0067] 1. Volume resistivity: test according to QJ1523-1988, apply glue on one side of the glass slide, put copper foil on both ends, apply primer on the other glass slide, overlap and press, and test the resistance value after standing at room temperature for 24 hours And calculate the volume resistivity. Make 5 groups of parall...

Embodiment 2

[0071] A kind of primer type acrylate conductive adhesive, its formula is composed as follows:

[0072] Main ingredient:

[0073] Hydroxypropyl methacrylate 59 %wt

[0074] Methepoxy acrylate 25%wt

[0075] 1,4-Hydroquinone 0.4%wt

[0076] EDTA tetrasodium salt 0.1%wt

[0077] Multi-walled carbon nanotubes 8.5%wt

[0078] O-benzoylsulfonimide 0.5%wt

[0079] Acetylphenylhydrazine 0.5%wt

[0080] Cumene hydroperoxide 1%wt

[0081] Bentonite 5%wt

[0082] Primer, performance test are the same as embodiment 1.

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Abstract

The invention discloses a priming coat type acrylic acid ester conductive adhesive and a preparation method thereof. The conductive adhesive is composed of a main agent and a primer. The main agent is composed of the following raw materials: an acrylate monomer containing at least one vinyl, a vinyl-terminated performed polymer, a conductive filling material, a stabilizing agent, a peroxide initiator, a curing accelerator and an anti-settling agent. The primer is composed of the following raw materials: a solvent and an activator. The preparation method comprises the following steps: the preparation of the main agent. The preparation method comprises the following steps : the preparation of A including 1,2,3; and the preparation of B including 1, uniformly mixing the acrylate monomer containing at least one vinyl, vinyl-terminated performed polymer and the stabilizing agent; 2, adding the conductive filling material into a resin matrix and performing uniform stirring; 3, adding the rest raw materials, removing foams, discharging and refrigerating materials for storage; the preparation of primer: including uniformly mixing the activator and the solvent in protection atmosphere, discharging materials, filling protective gas for sealing, and storing in a container with dark color at normal temperature. The priming coat type conductive adhesive has the advantages of rapid solidification at room temperature, usage convenience, good bonding strength, and good electric and heat conduction effects.

Description

technical field [0001] The invention relates to a primer-coated acrylate conductive adhesive and a preparation method thereof. Background technique [0002] Conductive adhesive is an adhesive with certain conductivity after curing or drying. It is usually composed of resin matrix, conductive filler (ie conductive particles), dispersing additives, auxiliary agents, etc. The matrix resin is mainly thermosetting epoxy resin, and the epoxy conductive adhesive produced has high reactivity and needs to be frozen at -40°C, which brings inconvenience to transportation, storage and use (thawing). If a conductive adhesive that can be cured at room temperature with fast curing speed and good conductivity can be provided, it will definitely become the first choice for the electronic packaging industry. [0003] Conductive fillers are generally powders of gold, silver, copper, aluminum, zinc, iron, nickel, and silver-plated metal powder and graphite. These conductive fillers are bulky ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J163/10C09J167/06C09J9/02
Inventor 吴小霞夏忠谢翔
Owner 东莞优邦材料科技股份有限公司
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