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High-temperature-resistant and low-peel-strength acrylate pressure-sensitive adhesive and preparation method thereof

A technology of pressure-sensitive adhesives and acrylates, applied in the direction of ester copolymer adhesives, adhesive types, etc., can solve problems such as poor high temperature resistance, and achieve the effect of low peeling force

Active Publication Date: 2017-03-22
ANHUI MINGXUN NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of poor high temperature resistance of current pressure-sensitive adhesives, the present invention provides a polyacrylate pressure-sensitive adhesive with high temperature resistance (not lower than 120°C) and low peeling force (below 50g / 25mm) and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A high-temperature-resistant low-peeling force acrylate pressure-sensitive adhesive, prepared according to the following parts by weight:

[0031] A: 60 parts of isooctyl acrylate

[0032] 10 parts methyl methacrylate

[0033] 2 parts acrylic

[0034] 0.5 parts of hydroxyethyl acrylate

[0035] 5 parts maleimide

[0036] Initiator: 0.5 parts of azobisisobutyronitrile

[0037] Solvent: 35 parts of toluene + 80 parts of ethyl acetate

[0038] B: 2 parts of TDI trimer (dissolved in 5 parts of toluene)

[0039] Preparation process: Add all monomers (isooctyl acrylate, methyl methacrylate, acrylic acid, hydroxyethyl acrylate and maleimide) and part of the solvent into the reactor as a primer to control the total concentration of the monomers. Add the initiator at 60wt% and 7 / 10,000 of the total weight of the monomer, stir and mix evenly at a speed of 90r / min-250r / min, heat, and control the reaction temperature at 75°C-82°C through solvent reflux. After the reaction wa...

Embodiment 2

[0041] A high-temperature-resistant low-peeling force acrylate pressure-sensitive adhesive, prepared according to the following parts by weight:

[0042] A: 50 parts of butyl acrylate

[0043] 15 parts methyl acrylate

[0044] 2 parts itaconic acid

[0045] Hydroxypropyl Acrylate 0.5

[0046] Vinyl carbazole 4 parts

[0047] Initiator: 0.7 parts of dibenzoyl peroxide

[0048] Solvent: 27 parts of butyl acetate + 70 parts of ethyl acetate + 5 parts of cyclohexane

[0049] B: 1.5 parts of zirconium acetylacetonate (dissolved in 15 parts of toluene)

[0050] Preparation process: Add all monomers (butyl acrylate, methyl acrylate, itaconic acid, hydroxypropyl acrylate, vinyl carbazole) and part of the solvent into the reactor as a base material, and control the total concentration of the monomers to not less than 60wt %, and add the initiator according to 8 / 10,000 of the total weight of the monomer, stir and mix evenly at a speed of 120 r / min, heat, and control the reaction t...

Embodiment 3

[0052] A high-temperature-resistant low-peeling force acrylate pressure-sensitive adhesive, prepared according to the following parts by weight:

[0053] A: 60 parts of isooctyl acrylate

[0054] 20 parts of styrene

[0055] 2.5 parts of methacrylic acid

[0056] 0.4 parts of hydroxyethyl acrylate

[0057] Vinylpyrrolidone 6 parts

[0058] Initiator: 0.6 parts of azobisisoheptanonitrile

[0059] Solvent: 16.5 parts of toluene + 100 parts of ethyl acetate

[0060] B: 1.2 parts of aluminum acetylacetonate + 0.2 parts of HDI trimer (dissolved in 17 parts of toluene)

[0061] Preparation process: Add all monomers (isooctyl acrylate, styrene, methacrylic acid, hydroxyethyl acrylate, vinylpyrrolidone) and part of the solvent into the reactor as a base material, and control the total concentration of monomers to not less than 60wt% , and add the initiator according to 7 / 10,000 of the total weight of the monomer, stir and mix evenly at a speed of 125r / min, heat, and control the ...

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Abstract

The invention discloses a high-temperature-resistant and low-peel-strength acrylate pressure-sensitive adhesive. The pressure-sensitive adhesive is prepared from raw materials in parts by weight as follows: 50-90 parts of soft acrylate monomers, 5-25 parts of hard acrylate monomers, 0.5-15 parts of reactive functional monomers, 0.2-10 parts of high-temperature-resistant active monomers, 0.2-3 parts of an initiator, 0.5-5 parts of a curing agent and 60-200 parts of a solvent. All the monomers and part of the initiator are dissolved in the solvent firstly, the total concentration of the monomers is controlled to be not lower than 60wt%, and then the material is heated for a reflux reaction for 3-6 h; then the rest of the initiator is dropwise added to reaction liquid, a reaction is carried out for 0.5-2 h after adding dropwise is completed, and then the obtained product is diluted and reacts step by step; and the obtained material and the curing agent are evenly mixed, so that the high-temperature-resistant and low-peel-strength acrylate pressure-sensitive adhesive is obtained. The pressure-sensitive adhesive can still stick a stuck object at the relatively high use temperature, and an adhesive layer is free of residues and traces after being peeled.

Description

technical field [0001] The invention belongs to the field of pressure-sensitive adhesives, and in particular relates to a high-temperature-resistant low-peeling force acrylate pressure-sensitive adhesive and a preparation method thereof. Background technique [0002] High temperature resistant pressure-sensitive adhesive means that after a period of time under high temperature conditions, there is no residual adhesive on the surface of the adherend and a certain peel strength is maintained. [0003] With the development of science and technology, many fields, especially the electronics industry, have posed new challenges to acrylic pressure-sensitive adhesives, and the problem of high temperature resistance is an important long-standing issue. The research content of this patent is a pressure-sensitive adhesive with high temperature resistance, which aims to solve the problem of high temperature resistance of acrylic pressure-sensitive adhesives, so that the adherend can sti...

Claims

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Application Information

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IPC IPC(8): C09J133/08C08F220/18C08F220/14C08F220/06C08F220/28C08F222/02C08F226/12C08F212/08C08F226/10C08F220/56C08F222/40
CPCC08F220/18C09J133/08C08F220/1804C08F220/1808C08F220/06C08F220/281C08F222/40C08F220/14C08F212/08C08F226/10C08F220/56C08F222/02C08F226/12C08F218/08
Inventor 李卫东曹英杰白永平邓庆瑞张晓勇刘多新李晶波殷晓芬席丹
Owner ANHUI MINGXUN NEW MATERIAL TECH
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