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Acrylate pressure-sensitive adhesive, preparation method thereof and protective film

An acrylate and pressure-sensitive adhesive technology, applied in the field of pressure-sensitive adhesives, can solve the problems of high energy consumption, accelerated product aging, VOC emission, etc., and achieve the effects of low cost, high reducibility and easy preparation

Inactive Publication Date: 2021-12-03
SHENZHEN TONGTAIYING ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing acrylate pressure-sensitive adhesives are solvent-based, and their problems are VOC emissions and high energy consumption
However, due to the inevitable contact with air during the production and use of UV pressure-sensitive adhesives, coupled with the influence of light, heat, radiation and residual photoinitiators in UV pressure-sensitive adhesives, etc., the The oxidation reaction proceeds synergistically, accelerating the aging of the product

Method used

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  • Acrylate pressure-sensitive adhesive, preparation method thereof and protective film
  • Acrylate pressure-sensitive adhesive, preparation method thereof and protective film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The present embodiment provides a kind of preparation method of acrylate pressure-sensitive adhesive, and it comprises the steps:

[0022] (10) prepare raw materials by following composition and parts by weight:

[0023] A: 60 parts of acrylic soft monomer (isooctyl acrylate)

[0024] Acrylic hard monomer 10 parts (methyl methacrylate)

[0025] Acrylic acid functional monomer 0.5 parts (acrylic acid, maleic acid and hydroxyethyl acrylate)

[0026] 0.3 parts of the first photoinitiator (benzoin ether)

[0027] B: 10 parts of diluted monomer (hydroxyethyl methacrylate, hydroxypropyl acrylate and acryloyl morpholine)

[0028] 0.5 parts of the second photoinitiator (2-methyl-1-(4-methylthiophenyl)-2-morpholine-1-acetone and phenylbis(2,4,6-trimethylbenzyl acyl)phosphine oxide)

[0029] C: 0.5 parts of 4-hexyl-4H-dithieno[3,2-b:2,3-d]pyrrole

[0030] (11) Add each component in component A to the reaction kettle, mix evenly, and irradiate for 150s with an ultraviolet li...

Embodiment 2

[0034] The present embodiment provides a kind of preparation method of acrylate pressure-sensitive adhesive, and it comprises the steps:

[0035] (20) prepare raw materials by following composition and parts by weight:

[0036] A: 85 parts of acrylic soft monomer (isooctyl acrylate and n-butyl acrylate)

[0037] Acrylic hard monomer 25 parts (styrene and vinyl acetate)

[0038] Acrylic functional monomer 2 parts (hydroxypropyl acrylate)

[0039] 1.5 parts of the first photoinitiator (2-hydroxyl-2-methyl-1-phenyl-1-propanone and 2-hydroxyl-cyclohexyl-benzophenone)

[0040] B: 50 parts of diluted monomer (tetrahydrofuran acrylate and cyclotrimethylolpropane methylal acrylate)

[0041] 1.5 parts of the second photoinitiator (1-hydroxyl-cyclohexyl-benzophenone, 2,4,6-trimethylbenzoyl-diphenylphosphine oxide and 2-methyl-1-(4- Methylthiophenyl)-2-morpholine-1-propanone)

[0042]C: 2 parts of 4-hexyl-4H-dithieno[3,2-b:2,3-d]pyrrole

[0043] (21) Add each component in component...

Embodiment 3

[0047] The present embodiment provides a kind of preparation method of acrylate pressure-sensitive adhesive, and it comprises the steps:

[0048] (30) prepare raw materials by following composition and parts by weight:

[0049] A: 70 parts of acrylic soft monomer (ethyl acrylate)

[0050] Acrylic hard monomer 15 parts (vinyl acetate, acrylonitrile and isobornyl methacrylate)

[0051] Acrylic functional monomer 1 part (hydroxyethyl methacrylate and glycidyl methacrylate)

[0052] 1 part of the first photoinitiator (3-hydroxy-cyclohexyl-benzophenone)

[0053] B: Dilute monomer 25 parts (trimethylolpropane triacrylate)

[0054] 0.8 part of second photoinitiator (1-hydroxyl-cyclohexyl-benzophenone)

[0055] C: 1 part of 4-phenyl-4H-dithieno[3,2-b:2,3-d]pyrrole

[0056] (31) Add each component in component A to the reaction kettle, mix evenly, and irradiate with an ultraviolet light source with a wavelength of 365nm for 300s to obtain an acrylate prepolymer;

[0057] (32) Add...

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Abstract

The invention discloses an acrylate pressure-sensitive adhesive, a preparation method thereof and a protective film. The preparation method comprises the following steps: (1) mixing an acrylate hard monomer, an acrylate soft monomer, an acrylate functional monomer and a first type of photoinitiator, and irradiating under an ultraviolet light source to obtain an acrylate prepolymer; and (2) adding a diluting monomer and a second type of photoinitiator into the acrylate prepolymer to obtain an acrylate adhesive precursor; and adding thienopyrrole molecules into the acrylate adhesive precursor, and mixing to obtain the acrylate pressure-sensitive adhesive. The thienopyrrole molecules are creatively added into the acrylate prepolymer, the thienopyrrole molecules are used for doping the acrylate pressure-sensitive adhesive, free radicals generated by light, heat, radiation and the like can be effectively eliminated, chain reaction is prevented, the oxidation resistance of the UV pressure-sensitive adhesive is improved, and the cost is low. The whole preparation process is efficient, energy-saving and pollution-free.

Description

technical field [0001] The invention relates to the technical field of pressure-sensitive adhesives, in particular to an acrylate pressure-sensitive adhesive, a preparation method thereof, and a protective film. Background technique [0002] Acrylic pressure-sensitive adhesive is a kind of adhesive that is extremely sensitive to pressure and can be well bonded to the object with only a slight pressure. Because of its good bonding performance, excellent aging resistance and corrosion resistance, Therefore, it is widely used in many fields such as packaging, building materials, electrical appliances, electronic communication, transportation, medical treatment and daily life. Most of the existing acrylate pressure-sensitive adhesives are solvent-based, and the existing problems are VOC emissions and high energy consumption. The UV-curable pressure-sensitive adhesive developed in recent years has been developed rapidly because of its low cost, low energy consumption, fast curin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J4/06C09J4/02C09J11/06C09J7/38
CPCC09J4/06C09J11/06C09J7/385C09J2433/00
Inventor 张子靖王江李明礼何云蔚胡涢波
Owner SHENZHEN TONGTAIYING ELECTRONICS TECH CO LTD
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