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Pressure-sensitive adhesive for intelligent touch screen protective film and preparation method thereof

A technology of protective film and touch screen, applied in the field of pressure-sensitive adhesive, can solve the problems of destroying the adhered product, increasing the adhesion of the protective film, and poor exhaust, achieving good adhesion, excellent stability, The effect of low peel strength

Active Publication Date: 2019-12-24
GUANGDONG DONGLI NEW MATERIALS SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are two problems in the electronic protective film industry: (1) The initial adhesion is poor, which makes it difficult to operate when laminating electronic products, and the exhaust is poor, causing appearance problems; (2) The adhesive force of the protective film The bonding time becomes longer and gradually becomes larger, and the adhered product cannot be torn off or even damaged in the later stage

Method used

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  • Pressure-sensitive adhesive for intelligent touch screen protective film and preparation method thereof

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preparation example Construction

[0052] The second aspect of the present invention is to provide the above-mentioned preparation method of the pressure-sensitive adhesive used for the protective film of the smart touch screen, comprising the following steps:

[0053] A. Weigh soft monomers, functional monomers, and initiators with two-thirds of the feeding amount in proportion, add them to the high-level tank, and stir evenly to obtain the mixed material;

[0054] B, take by weighing the solvent of 40-60% of feeding amount, put into reaction kettle and heat up to reflux state;

[0055] C, quickly drop one-third of the mixed material into the reactor, and keep the reflux reaction for 1-1.5h;

[0056] D. Add the rest of the mixed material dropwise at a constant speed in the reactor, control it in 3-3.5h, and then reflux and keep warm for 0.5-1.5h after dropping;

[0057] E. Add 1 / 6th initiator and 5-15% solvent mixed solution, and keep it under reflux for 0.5-1.5h;

[0058] F, adding 1 / 6th of the initiator an...

Embodiment 1

[0067] The pressure-sensitive adhesive used for the protective film of the intelligent touch screen is prepared from the following raw materials in mass percentage: 97% of polyacrylate resin and 3% of curing agent.

[0068] The isocyanate curing agent is hexamethylene polyisocyanate (Bayer N3390, Germany).

[0069] The polyacrylate resin includes the following raw materials in parts by weight: 24 parts of soft monomers, 6 parts of functional monomers, 70 parts of solvents, and 0.25 parts of initiators.

[0070] The soft monomer is composed of butyl acrylate and isooctyl acrylate in a mass ratio of 1:1.5.

[0071] The functional monomer is composed of acrylic acid and hydroxyethyl acrylate in a mass ratio of 1:1.

[0072] The solvent is ethyl acetate.

[0073] The initiator is dibenzoyl peroxide.

[0074] The above-mentioned preparation method of the pressure-sensitive adhesive used for the protective film of the intelligent touch screen comprises the following steps:

[00...

Embodiment 2

[0087] The pressure-sensitive adhesive used for the protective film of the intelligent touch screen is prepared from the following raw materials in mass percentage: 97% of polyacrylate resin and 3% of curing agent.

[0088] The isocyanate curing agent is hexamethylene polyisocyanate (Bayer N3390, Germany).

[0089] The polyacrylate resin includes the following raw materials in parts by weight: 24 parts of soft monomers, 6 parts of functional monomers, 70 parts of solvents, and 0.25 parts of initiators.

[0090] The soft monomer is composed of butyl acrylate and isooctyl acrylate in a mass ratio of 1:1.5.

[0091] The functional monomer is composed of acrylic acid, hydroxyethyl acrylate, and 3-(methacryloyloxy)propyltrimethoxysilane in a mass ratio of 1:1:0.6.

[0092] The solvent is ethyl acetate.

[0093] The initiator is dibenzoyl peroxide.

[0094] The above-mentioned preparation method of the pressure-sensitive adhesive used for the protective film of the intelligent to...

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Abstract

The invention discloses a pressure-sensitive adhesive for an intelligent touch screen protective film, and belongs to the technical field of pressure-sensitive adhesives, wherein the pressure-sensitive adhesive for the intelligent touch screen protective film is prepared from the following raw materials in percentage by mass: 96-98% of polyacrylate resin and 2-4% of a curing agent. According to the invention, the formula of the pressure-sensitive adhesive is preferably selected on the basis of the research on the surface property of the touch screen and an acrylic pressure-sensitive adhesive,so that the adhesive has the advantages of high initial adhesion, good exhaust property and the like; the prepared electronic protective film has low peel strength and good adhesion, the electronic protective film can be easily adhered to cover plate glass and easily torn, the adhesive layer polymer of the electronic protective film has excellent stability, and the problem that the cleanliness ofthe cover plate glass is affected due to the fact that an additive is transferred to an adhesion object can be prevented.

Description

technical field [0001] The invention belongs to the technical field of pressure-sensitive adhesives. Specifically, the invention relates to a pressure-sensitive adhesive used for a protective film of an intelligent touch screen and a preparation method thereof. Background technique [0002] Protective film is a kind of material with protective function. It is mainly used to protect the surface of products or materials during processing and transmission, so as to prevent the surface of products and materials from being polluted and damaged, thereby improving the appearance, grade and yield of products. The protective film is generally made of a special pressure-sensitive adhesive coated with a plastic film or paper substrate and processed by a special process. It has the characteristics of easy application, easy peeling, no warping and no pollution to the surface. It is widely used in instruments, furniture, Color steel plate, aluminum material, building profiles, electronics...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C09J7/24C09J7/38
CPCC09J133/08C09J143/04C09J2203/318C09J2423/046C09J7/243C09J7/385C09J2301/122C09J2301/302
Inventor 梁瓒伦
Owner GUANGDONG DONGLI NEW MATERIALS SCI & TECH CO LTD
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