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Reactive type pressure-sensitive resin and preparation method thereof

A pressure-sensitive resin, reactive technology, applied in the direction of adhesive types, graft polymer adhesives, adhesives, etc., can solve the problems of small adhesion, poor creep resistance, low strength, etc., to achieve enhanced adhesion knot, improve cohesion and adhesion, improve fluidity and wettability

Active Publication Date: 2018-05-18
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of low strength, poor creep resistance and small cohesive force in the current pressure-sensitive adhesive process, the invention provides a reactive pressure-sensitive resin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for preparing a reactive pressure-sensitive resin comprises the following steps.

[0027] S1. First weigh 3.0 g of azobisisobutyronitrile (initiator) and dissolve it in 20 g of toluene (organic solvent) to obtain an azobisisobutyronitrile solution, and raise the temperature to 60° C.

[0028] S2, 40g of butyl acrylate, 25g of methyl methacrylate (acrylic ester compound), 25g of unsaturated hyperbranched polyurethane prepolymer, 1.5g of KH-570, 5g of maleic anhydride and the azodiisocyanate obtained in step S1 The nitrile solution is mixed to obtain a uniform mixed monomer solution.

[0029] S3, add 80g toluene (organic solvent) in the 500mL four-necked flask that electric mixer, thermometer, condenser tube and balanced separatory funnel are housed, add dropwise 1 / 4 the mixed monomer that step S2 obtains in this four-necked flask solution, and pre-reacted for 1h to obtain a mixed system.

[0030] S4, then heat up the mixed system in the four-necked flask to 80...

Embodiment 2

[0034] A method for preparing a reactive pressure-sensitive resin comprises the following steps.

[0035] S1. First weigh 4.0 g of azobisisobutyronitrile (initiator) and dissolve it in 20 g of toluene (organic solvent) to obtain an azobisisobutyronitrile solution, and raise the temperature to 60° C.

[0036] S2, 55g of butyl acrylate, 5g of isooctyl acrylate, 40g of styrene (acrylate compound), 15g of unsaturated hyperbranched polyacrylate prepolymer, 1.5g of A-171, 10g of glycidyl methacrylate ( Functional monomer) is mixed with the azobisisobutyronitrile solution obtained in step S1 to obtain a uniform mixed monomer solution.

[0037] S3, add 80g toluene (organic solvent) in the 500mL four-neck flask that electric mixer, thermometer, condenser tube and balanced separatory funnel are housed, add dropwise 1 / 4 the mixed monomer that step S2 obtains in this four-necked flask solution, and pre-reacted for 1h to obtain a mixed system.

[0038]S4, then the mixed system in the fou...

Embodiment 3

[0042] A method for preparing a reactive pressure-sensitive resin comprises the following steps.

[0043] S1. First weigh 5.0 g of benzoyl peroxide (initiator) and dissolve it in 10 g of toluene (organic solvent) to obtain a benzoyl peroxide solution, and raise the temperature to 60° C.

[0044] S2, 30g of ethyl acrylate, 50g of methyl methacrylate, 10g of vinyl acetate, 10g of hydroxypropyl acrylate (functional monomer), 20g of unsaturated hyperbranched polyester prepolymer, 1.0g of A-151 (functional monomer) permanent monomer) is mixed with the benzoyl peroxide solution obtained in step S1 to obtain a uniform mixed monomer solution.

[0045] S3, add 80g toluene in the 500mL four-neck flask that electric mixer, thermometer, condenser tube and balanced separatory funnel are housed, in this four-neck flask, dropwise add 1 / 4 the mixed monomer solution that step S2 obtains, carry out preliminary After 1h reaction, a mixed system was obtained.

[0046] S4. Then, the temperature ...

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Abstract

The invention discloses reactive type pressure-sensitive resin and a preparation method thereof. The reactive type pressure-sensitive resin is prepared from acrylate compounds, hyperbranched unsaturated polyester resin, functional monomers, an initiator, an organic solvent and auxiliaries through free radical polymerization. The prepared reactive type pressure-sensitive resin is modified resin with certain pressure-sensitive characteristics and potential reactivity and is subjected to further reaction under the heating or illuminating condition, bonding is enhanced, the purpose of permanent fixation is achieved, the resin can be applied to preparation of a reactive heat conducting adhesive tape product, structural adhesion and fixation are realized, and application reliability of a heat conducting adhesive tape in electronic devices and equipment is remarkably improved.

Description

technical field [0001] The invention relates to the field of heat dissipation materials for electronic packaging, in particular to a reactive pressure-sensitive resin and a preparation method thereof. Background technique [0002] Pressure Sensitive Adhesive (PSA) is a kind of polymer material with special viscoelasticity, which can reach a certain adhesive strength in a short period of time by applying a small pressure. Pressure-sensitive adhesive has excellent construction technology, does not need curing fixtures, and does not require complicated processes such as heating and light, and directly acts on the surface of the adhered object through surface wetting, with strong applicability and fast speed. It has been widely used in labels , automotive interior, adhesive tape, medicine and other fields, have been widely used. [0003] However, the conventional pressure-sensitive resin structure is a chemical gel or physical jelly system with low cross-linking density, and a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/00C08F265/06C08F283/01C08F220/18C08F220/14C08F222/06C08F212/08C08F220/32C08F218/08C08F220/20C08F220/06C09J151/08C09J151/00
CPCC08F265/06C08F283/008C08F283/01C09J151/003C09J151/08C08F220/14C08F220/1804
Inventor 孙蓉张保坦常浩朱朋莉
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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