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High temperature resistant pressure sensitive adhesive with excellent performance, pressure sensitive adhesive tape and preparation method thereof

A pressure-sensitive adhesive tape and high-temperature resistant technology, applied in the field of pressure-sensitive adhesives, can solve the problems of prone to residual adhesive or ghosting, difficult to achieve high temperature resistance, poor chemical structure uniformity, etc., to achieve excellent initial adhesion performance, excellent compatibility. Effects of Sex and Fit

Active Publication Date: 2018-09-21
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

Pure solvent-based acrylic pressure-sensitive adhesives are difficult to achieve good high-temperature resistance, and high-temperature residues or ghosting are prone to occur. The reason is that solvent-based acrylic pressure-sensitive adhesives are mainly synthesized by free radical polymerization. The molecular weight of copolymers synthesized by this method Wide distribution, poor uniformity of chemical structure, and low molecular weight copolymers in high temperature environment have poor heat resistance, which leads to the phenomenon of residual glue or ghosting

Method used

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  • High temperature resistant pressure sensitive adhesive with excellent performance, pressure sensitive adhesive tape and preparation method thereof
  • High temperature resistant pressure sensitive adhesive with excellent performance, pressure sensitive adhesive tape and preparation method thereof
  • High temperature resistant pressure sensitive adhesive with excellent performance, pressure sensitive adhesive tape and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A high-temperature resistant pressure-sensitive adhesive with excellent performance and a pressure-sensitive adhesive tape applied with the pressure-sensitive adhesive, the preparation process is as follows:

[0027] 1) Synthesis of 2-octyl-1-dodecyl acrylate monomer

[0028] According to the mass parts of the raw materials, 80 parts of 2-octyldodecanol and 20 parts of acrylic acid were dissolved in 100 parts of dichloromethane, and 5 parts of 4-dimethylaminopyridine and 5 parts of 1-(3-bis (Methylaminopropyl)-3-ethylcarbodiimide hydrochloride, the temperature is controlled at 30°C, and the reaction is carried out for 50 hours to prepare 2-octyldodecanyl acrylate.

[0029] 2) Synthesis of high temperature resistant pressure sensitive adhesive

[0030] According to the mass parts of raw materials, 40 parts of 2-octyl lauryl acrylate, 5 parts of acrylic acid, 3 parts of N-hydroxyethyl acrylamide, 3 parts of N-vinyl formamide, 0.01 parts of peroxide Tert-Butyl-2-ethylhexanoate, 0...

Embodiment 2

[0034] A high-temperature resistant pressure-sensitive adhesive with excellent performance and a pressure-sensitive adhesive tape applied with the pressure-sensitive adhesive, the preparation process is as follows:

[0035] 1) Synthesis of 2-octyl-1-dodecyl acrylate monomer

[0036] According to the mass parts of raw materials, 60 parts of 2-ethyl-1-dodecanol and 15 parts of acrylic acid were dissolved in 80 parts of dichloromethane, and 3 parts of 4-dimethylaminopyridine and 3 parts of 1-( 3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, the temperature was controlled at 35° C., and the reaction was conducted for 60 hours to prepare the monomer of 2-ethyl-1-dodecyl acrylate in Example 2.

[0037] 2) Synthesis of high temperature resistant pressure sensitive adhesive

[0038] According to the mass parts of raw materials, 35 parts of 2-octyl lauryl acrylate, 7 parts of acrylic acid, 2 parts of N-hydroxyethyl acrylamide, 2 parts of N-vinyl formamide, 0.015 parts of peroxide Te...

Embodiment 3

[0042] A high-temperature resistant pressure-sensitive adhesive with excellent performance and a pressure-sensitive adhesive tape applied with the pressure-sensitive adhesive, the preparation process is as follows:

[0043] 1) Synthesis of 2-octyl-1-dodecyl acrylate monomer

[0044] According to the mass parts of raw materials, 40 parts of 2-ethyl-1-dodecanol and 10 parts of acrylic acid were dissolved in 70 parts of dichloromethane, and 2 parts of 4-dimethylaminopyridine and 2 parts of 1-( 3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, the temperature was controlled at 25°C, and the reaction was carried out for 70 hours to prepare the monomer of 2-ethyl-1-dodecyl acrylate in Example 3.

[0045] 2) Synthesis of high temperature resistant pressure sensitive adhesive

[0046] According to the mass parts of raw materials, 30 parts of 2-octyl lauryl acrylate, 8 parts of acrylic acid, 3 parts of N-hydroxyethyl acrylamide, 1 part of N-vinyl formamide, 0.03 parts of peroxide Tert...

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Abstract

The invention discloses a high temperature resistant pressure sensitive adhesive with excellent performance. By utilizing the compounding of acrylic-2-octyldodecyl ester and N-vinylformamide, a high temperature resistant monomer and an adhesion promoting function monomer have an efficient synergistic effect and exhibit excellent compatibility and adaptability, other raw material components are further adjusted to obtain a higher degree of adaptation, and a controlled active polymerization method (RAFT polymerization) is adopted for polymerization reaction to obtain the high temperature resistant pressure sensitive adhesive with excellent performance; the number-average molecular weight Mn of the high temperature resistant pressure sensitive adhesive is 50,000-500,000, the molecular polydispersity coefficient is 1.0-1.3, the glass transition temperature Tg is -45-5 DEG C, and the technical problems of poor high temperature resistance and poor stability of a traditional solvent-based acrylic pressure sensitive adhesive are effectively solved. The invention further discloses a preparation method of the pressure sensitive adhesive and a pressure sensitive adhesive tape using the same and a preparation method thereof.

Description

Technical field [0001] The invention relates to the field of polymer functional materials, in particular to a pressure-sensitive adhesive. Background technique [0002] The full name of pressure-sensitive adhesive is pressure sensitive adhesive, which means that the adhesive can be used to bond and clean the surface of the adherend immediately by using contact pressure. At the same time, if it is removed from the adhesive surface of the adherend, The adhesive does not contaminate the surface of the adherend. There are many types of pressure-sensitive adhesives. According to the main material, they are mainly divided into acrylic pressure-sensitive adhesives, polyurethane pressure-sensitive adhesives, silicone pressure-sensitive adhesives, thermoplastic elastomer pressure-sensitive adhesives and other pressure-sensitive adhesives. These pressure-sensitive adhesives are mainly used to manufacture pressure-sensitive adhesive products such as pressure-sensitive tapes, adhesive sheet...

Claims

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Application Information

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IPC IPC(8): C09J133/08C09J7/38C09J7/25C08F220/18C08F220/06C08F220/58C08F220/56
CPCC08F220/18C08F220/1818C09J7/25C09J7/38C09J133/26C09J2433/00C09J2477/006C08F220/06C08F220/58C08F220/56
Inventor 唐承明
Owner GUANGDONG DONGLI NEW MATERIALS SCI & TECH CO LTD
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