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Organic fluorine modified polyacrylic acid pressure-sensitive adhesive and preparation method thereof

A technology of polyacrylic pressure-sensitive adhesive and organic fluorine, which is applied in the direction of pressure-sensitive film/sheet, adhesive, nitrile copolymer adhesive, etc. It can solve the problems of poor degassing, unstable cohesion, and easy bubbles, etc. Achieve the effects of improving cohesive energy, good heat and humidity resistance, and small increase in adhesion

Pending Publication Date: 2022-05-06
SHANGHAI BAOLIJIA NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(2) Poor exhaust performance
When the protective film is attached to the material to be protected, it is not easy to operate, the wettability is not good, and it is easy to have bubble defects
(3) The adhesive force is unstable over time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] First weigh 50g of isooctyl acrylate, 38.7g of butyl acrylate, 4g of methyl methacrylate, 0.3g of acrylic acid, 3g of hydroxyethyl acrylate, 2g of 4-hydroxybutyl acrylate, and 2g of 12-fluoroheptyl acrylate and mix them uniformly. Add 30g of the monomer mixture into the reaction flask, weigh 50g of ethyl acetate, 20g of toluene, and 10g of acetone into the reaction flask, weigh 0.1g of azobisisobutyronitrile into the reaction flask, and gradually heat to 70°C under stirring conditions For the above reflux reaction, observe the reaction system, start timing since the occurrence of obvious reflux, and react for 20 minutes;

[0029] After reacting for 20 minutes, take 70 g of the monomer mixture, 10 g of ethyl acetate, and 0.1 g of azobisisobutyronitrile and stir evenly, drop the mixed solution into the reaction bottle evenly, finish dropping in 90 minutes, and then keep warm for 2 hours;

[0030] After keeping warm for 2 hours, take 0.1g of azobisisobutyronitrile and 5g o...

Embodiment 2

[0034] First weigh 74.5g of isooctyl acrylate, 10g of methyl acrylate, 5g of vinyl acetate, 2g of itaconic acid, 3g of hydroxyethyl acrylate, 0.5g of glycidyl methacrylate, and 5g of hexafluorobutyl acrylate and mix them uniformly. Add 30g of the liquid mixture into the reaction bottle, weigh 50g of ethyl acetate and 30g of toluene into the reaction bottle, weigh 0.1g of benzoyl peroxide and add it into the reaction bottle, and gradually heat to reflux reaction above 80°C under stirring conditions, and observe For the reaction system, start timing since the occurrence of obvious reflux, and react for 20 minutes;

[0035] After reacting for 20 minutes, take 70g of the monomer mixture, 10g of toluene, and 0.1g of benzoyl peroxide and stir evenly, drop the mixture evenly into the reaction bottle, finish dripping in 90 minutes, and then keep warm for 2 hours;

[0036] After 2 hours of heat preservation, mix 0.1g of benzoyl peroxide and 5g of toluene evenly, add to the reaction bot...

Embodiment 3

[0040] First, weigh 28.8g of isooctyl acrylate, 50g of butyl acrylate, 10g of vinyl acetate, 2g of acrylonitrile, 4g of acrylic acid, 0.2g of hydroxyethyl methacrylate, and 5g of hexafluoroisopropyl acrylate and mix them evenly, and take the monomer mixture Add 30g into the reaction bottle, weigh 50g of ethyl acetate, 20g of toluene, and 10g of n-hexane into the reaction bottle, weigh 0.1g of benzoyl peroxide into the reaction bottle, and gradually heat to above 80°C under stirring conditions for reflux reaction. Observe the reaction system, start timing since the occurrence of obvious reflux, and react for 30 minutes;

[0041] After reacting for 30 minutes, take 70g of the monomer mixture, 10g of toluene, and 0.1g of benzoyl peroxide and stir evenly, drop the mixture evenly into the reaction bottle, finish dripping in 90 minutes, and then keep warm for 2 hours;

[0042] After 2 hours of heat preservation, mix 0.1g of benzoyl peroxide and 5g of toluene evenly, add to the react...

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PUM

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Abstract

The invention discloses an organic fluorine modified polyacrylate pressure-sensitive adhesive and a preparation method thereof. The organic fluorine modified polyacrylate pressure-sensitive adhesive comprises the following components in parts by weight: 70-95 parts of soft monomer; 2-20 parts of a hard monomer; 1-8 parts of a functional monomer; 1 to 20 parts of fluorine-containing monomer; 0.1 to 0.6 part of an initiator; 0.3 to 3 parts of a cross-linking agent; according to the invention, a fluorine-containing material containing acrylate double bonds participates in a free radical polymerization reaction and is randomly copolymerized with a soft monomer, a hard monomer and a functional monomer to synthesize the acrylate pressure-sensitive adhesive with ultralow surface energy, and the cross-linking agent is added into the acrylate pressure-sensitive adhesive, so that the cohesive energy, the temperature resistance and the binding power stability are improved; the protective film prepared from the pressure-sensitive adhesive is good in heat and humidity resistance, does not pollute a protected material in a high-temperature and high-humidity environment, is small in adhesive force increasing amplitude along with time, and is easy to paste and tear.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to the preparation and application of a low-surface-energy fluorine-modified acrylate pressure-sensitive adhesive. Background technique [0002] Pressure-sensitive adhesives are adhesives that require only finger pressure to bond. Pressure-sensitive adhesive products are widely used in packaging, automobiles, transportation, electronic communications, electrical appliances, building materials, machinery, aerospace, light industry, medical and health care, and households. They are conveniently used in various purposes such as sealing, bundling, covering, sealing, protection, reinforcement, splicing, stamping, identification, packaging, insulation, fixing, etc. According to their chemical composition, pressure-sensitive adhesives can be divided into: rubber-based pressure-sensitive adhesives, polyacrylate-based pressure-sensitive adhesives, silicone-based pressure-sensitive adhesiv...

Claims

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Application Information

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IPC IPC(8): C09J7/38C09J7/25C09J133/08C08F220/18C08F220/14C08F220/06C08F220/20C08F218/08C08F222/02C08F220/32C08F220/24C08F220/46
CPCC08F220/1808C09J133/066C09J133/16C09J133/20C09J133/24C09J133/26C09J7/385C09J7/255C08F220/1804C09J2467/006C09J2433/00C09J2301/302C09J2301/414C08F220/14C08F220/06C08F220/20C08F218/08C08F222/02C08F220/325C08F220/24C08F220/46
Inventor 罗衍慧
Owner SHANGHAI BAOLIJIA NEW MATERIAL CO LTD
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