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Preparation method of heat-conducting hot melt adhesive

A hot-melt adhesive and reaction technology, applied in the direction of heat exchange materials, chemical instruments and methods, adhesives, etc., can solve the problems of poor thermal conductivity of hot-melt adhesives, and ensure the uniformity and dispersion of acidification, good thermal conductivity and stability. The effect of reducing the temperature potential difference

Active Publication Date: 2019-02-22
JIANGSU NEW MATERIALS SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the prior art, the present invention provides a method for preparing a heat-conducting hot-melt adhesive, which solves the problem of poor heat-conducting effect of the current hot-melt adhesive, has good heat-conducting effect and heat-conducting stability, and can make heat energy with Fast delivery by conduction and convection

Method used

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Examples

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Effect test

Embodiment 1

[0030] A preparation method of thermally conductive hot melt adhesive, characterized in that: the preparation method comprises the following steps,

[0031] Step 1, adding ethylene-vinyl acetate copolymer and terpene resin into ethanol aqueous solution, ultrasonically reacting for 10 minutes, and distilling under reduced pressure until viscous liquid is formed;

[0032] Step 2, putting graphene into hydrochloric acid solution, ultrasonically reacting for 1 hour, and microwave reacting for 0.5 hour, to obtain acidified graphene liquid;

[0033] Step 3, subject the acidified graphene liquid to a constant temperature evaporation reaction for 10 minutes, add heat transfer oil and dispersant after cooling, and stir evenly to obtain a heat transfer mixture;

[0034] Step 4: Add the initiator to the viscous liquid, stir evenly, then slowly add the heat-conducting mixed liquid dropwise, and react with microwave until the addition is completed, and stand for 1 hour under constant press...

Embodiment 2

[0046] A preparation method of thermally conductive hot melt adhesive, characterized in that: the preparation method comprises the following steps,

[0047] Step 1, adding ethylene-vinyl acetate copolymer and terpene resin into ethanol aqueous solution, ultrasonically reacting for 15 minutes, and distilling under reduced pressure until viscous liquid is formed;

[0048] Step 2, putting graphene into hydrochloric acid solution, ultrasonically reacting for 3 hours, and microwave reacting for 1.5 hours, to obtain acidified graphene liquid;

[0049] Step 3, subject the acidified graphene liquid to a constant temperature evaporation reaction for 20 minutes, add heat transfer oil and dispersant after cooling, and stir evenly to obtain a heat transfer mixture;

[0050]Step 4: Add the initiator to the viscous liquid, stir evenly, then slowly add the heat-conducting mixed liquid dropwise, and react with microwaves until the addition is completed, and stand for 3 hours under constant pr...

Embodiment 3

[0062] A preparation method of thermally conductive hot melt adhesive, characterized in that: the preparation method comprises the following steps,

[0063] Step 1, adding ethylene-vinyl acetate copolymer and terpene resin into ethanol aqueous solution, ultrasonically reacting for 13 minutes, and distilling under reduced pressure until viscous liquid is formed;

[0064] Step 2, putting graphene into hydrochloric acid solution, ultrasonically reacting for 2 hours, and microwave reacting for 1 hour, to obtain acidified graphene liquid;

[0065] Step 3, subject the acidified graphene liquid to a constant temperature evaporation reaction for 15 minutes, add heat transfer oil and dispersant after cooling, and stir evenly to obtain a heat transfer mixture;

[0066] Step 4: Add the initiator to the viscous liquid, stir evenly, then slowly add the heat-conducting mixed liquid dropwise, and react with microwave until the addition is completed, and stand for 2 hours under constant press...

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Abstract

The invention belongs to the technical field of hot melt adhesives and particularly relates to a preparation method of a heat-conducting hot melt adhesive. The preparation method comprises the following steps: adding an ethylene-vinyl acetate copolymer and terpene resin into an ethanol water solution, and carrying out ultrasonic treatment and reduced pressure distillation, so as to obtain viscousfluid; adding graphene into a hydrochloric acid solution, sequentially carrying out ultrasonic reaction, microwave reaction and constant-temperature evaporation reaction, and mixing with heat-conducting oil and a dispersing agent, so as to obtain heat-conducting mixed oil; and adding an initiator into the viscous fluid, dropwise adding the heat-conducting mixed oil, and carrying out microwave reaction and constant-pressure standing reaction, so as to obtain viscous glue liquid; and finally, adding an antioxidant, releasing inorganic substances through deionized water, and concentrating, so asto obtain the heat-conducting hot melt adhesive with an anti-static effect. According to the preparation method, the problem that an existing hot melt adhesive is poor in heat-conducting effect is solved, the heat-conducting hot melt adhesive has good heat-conducting effect and heat-conducting stability, and the energy can be rapidly transferred in conduction and convection manners.

Description

technical field [0001] The invention belongs to the technical field of hot-melt adhesives, and in particular relates to a preparation method of heat-conducting hot-melt adhesives. Background technique [0002] Today's technological products are changing with each passing day, and their development is even more rapid. It is very important for the stability and life of electronic products. Therefore, almost all electronic products must protect their electronic components. Currently, the protection methods for electronic components are: , Conformal protection, that is, three anti-paint, its process is convenient and fast, simple and practical, but because the coated coating is thin, the protection ability is limited; potting protection, comprehensive and reliable, effective protection, but its long operation time is not conducive to Assembly line operation affects production efficiency; another is comprehensive injection protection, which is comprehensive, effective, convenient...

Claims

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Application Information

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IPC IPC(8): C09J123/08C09J145/00C09J11/04C09J11/06C09J11/08C09K5/14
CPCC08L2201/04C08L2203/206C08L2205/035C09J11/04C09J11/06C09J11/08C09J123/0853C09K5/14C08L45/00C08L39/06C08L91/00C08K9/10C08K9/02C08K9/00C08K3/04C08K5/1535
Inventor 潘建军
Owner JIANGSU NEW MATERIALS SCI & TECH
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