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Acrylic pressure-sensitive adhesive, photo-thermal dual curable adhesive film and preparation method thereof

A technology of acrylic pressure-sensitive adhesive and polyacrylate, which is applied in the direction of pressure-sensitive film/sheet, adhesive, film/sheet-shaped adhesive, etc. No problems such as high, to achieve the effect of low toxicity cost, increase yield, and improve adhesion

Inactive Publication Date: 2019-04-19
潍坊同有新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (1) Only light can be used for curing. When curing, the volatilization of monomers is large, the curing depth is not enough, the crosslinking density is too small, and the bonding strength is not high;
[0008] (2) For materials with poor light transmission (such as polycarbonate, transparent polyvinyl chloride, acrylic resin and aluminum oxide, etc.), it cannot be cured in a short time

Method used

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  • Acrylic pressure-sensitive adhesive, photo-thermal dual curable adhesive film and preparation method thereof
  • Acrylic pressure-sensitive adhesive, photo-thermal dual curable adhesive film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Prepare raw materials according to the following weight ratio:

[0045] Mixed monomer: 25 parts of butyl acrylate

[0046] 30 parts of methyl methacrylate

[0047] 45 parts of glycidyl methacrylate;

[0048]Initiator: 1 part of dibenzoyl oxide and azobisisobutyronitrile, and dibenzoyl oxide: azobisisobutyronitrile=3:1;

[0049] Organic solvent: 40 parts of a mixture of ethyl acetate and toluene, and ethyl acetate:toluene=1:1

[0050] S01, preparation of polyacrylate prepolymer

[0051] S01-1. According to the weight ratio of the above raw materials, mix butyl acrylate, methyl methacrylate, and glycidyl methacrylate to form a mixed monomer, take 1 / 2 of the mixed monomer, and account for the initiator 1 / 4 of the total amount of dibenzoyl peroxide is dissolved in it, fully dissolved;

[0052] S01-2. In a four-necked flask equipped with a stirrer, a condenser, a nitrogen tube and a dropping funnel, add 2 / 3 of the organic solvent, and add the solution configured in step...

Embodiment 2

[0067] Prepare raw materials according to the following weight ratio:

[0068] Mixed monomer: 20 parts of butyl acrylate

[0069] 40 parts of methyl methacrylate

[0070] 40 parts of glycidyl methacrylate;

[0071] Initiator: a total of 0.6 parts of dibenzoyl oxide and azobisisobutyronitrile, and dibenzoyl oxide: azobisisobutyronitrile=3:1;

[0072] Organic solvent: 30 parts of a mixture of ethyl acetate and toluene, and ethyl acetate:toluene=2:1

[0073] S01, preparation of polyacrylate prepolymer

[0074] S01-1. According to the weight ratio of the above raw materials, mix butyl acrylate, methyl methacrylate, and glycidyl methacrylate to form a mixed monomer, take 1 / 2 of the mixed monomer, and account for the initiator 1 / 4 of the total amount of dibenzoyl peroxide is dissolved in it, fully dissolved;

[0075] S01-2. In a four-necked flask equipped with a stirrer, a condenser, a nitrogen tube and a dropping funnel, add 2 / 3 of the organic solvent, and add the solution con...

Embodiment 3

[0090] Prepare raw materials according to the following weight ratio:

[0091] Mixed monomer: 30 parts of butyl acrylate

[0092] 20 parts of methyl methacrylate

[0093] 50 parts of glycidyl methacrylate;

[0094] Initiator: a total of 1.2 parts of dibenzoyl oxide and azobisisobutyronitrile, and dibenzoyl oxide: azobisisobutyronitrile=4:1;

[0095] Organic solvent: 50 parts of a mixture of ethyl acetate and toluene, and ethyl acetate:toluene=1:2

[0096] S01, preparation of polyacrylate prepolymer

[0097] S01-1. According to the weight ratio of the above raw materials, mix butyl acrylate, methyl methacrylate, and glycidyl methacrylate to form a mixed monomer, take 1 / 2 of the mixed monomer, and account for the initiator 1 / 4 of the total amount of dibenzoyl peroxide is dissolved in it, fully dissolved;

[0098] S01-2. In a four-necked flask equipped with a stirrer, a condenser, a nitrogen tube and a dropping funnel, add 2 / 3 of the organic solvent, and add the solution con...

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Abstract

The invention discloses an acrylic pressure-sensitive adhesive, which is prepared by uniform mixing of a polyacrylate prepolymer, a reactive diluent, an organic solvent, a photoinitiator and a crosslinking agent in a weight ratio of 100:(20-50):(30-50):(0.5-3.0):(0.3-3.0). The polyacrylate prepolymer is prepared by: dissolving butyl acrylate, methyl methacrylate and epoxypropyl methacrylate in anorganic solvent, also adding an initiator, and introducing N2 for reaction. The invention also discloses a photo-thermal dual curable adhesive film, which includes an adhesive layer prepared from theabove-mentioned acrylic pressure-sensitive adhesive, and photo-thermal cross-linking treatment is carried out on the adhesive layer. The invention also discloses a preparation method of the photo-thermal dual curable adhesive film. The photo-thermal dual curable adhesive film prepared according to the invention has high cohesiveness and good reworkability, can realize photo-thermal dual curing, shortens the curing time and improves the production efficiency.

Description

technical field [0001] The invention relates to the technical field of electronic bonding, in particular to an acrylic pressure-sensitive adhesive, a photothermal dual-curing adhesive film and a preparation method thereof. Background technique [0002] With the rapid development of the electronics and communication industries, various electronic devices, such as mobile phones, computers, TVs, navigators, and notebooks, are getting smaller and smaller, tending to be multi-functional, portable, and highly integrated. This development trend requires the combination of multiple parts of the electronic device, especially the need for bonding between various small parts inside the electronic device. [0003] At present, the bonding of various small parts inside electronic equipment mainly adopts ultra-thin PET double-sided tape, electronic glue dispensing process and pressure-sensitive adhesive bonding technology. [0004] When using ultra-thin PET double-sided tape for bonding, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J4/02C09J4/06C08F220/32C08F220/18C08F220/14C09J7/38C09J7/10
CPCC08F220/14C08F220/32C08F220/325C09J4/06C09J7/10C09J7/385C09J2301/302C09J2433/00C08F220/1804
Inventor 汪勇李晶李珍
Owner 潍坊同有新材料科技有限公司
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