An acrylic adhesive and a foam tape

An acrylic and adhesive technology, applied in the direction of adhesives, adhesive types, ester copolymer adhesives, etc., can solve problems such as unsatisfactory bonding performance, achieve strong practicability, improve viscoelastic properties, ultra-low temperature and high weather resistance Effect

Active Publication Date: 2021-02-12
DWELL PHOTOELECTRIC MATERIAL SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional acrylate emulsion adhesives still have many shortcomings, such as: unsatisfactory bonding performance
In recent years, many applications have put forward higher requirements for the comprehensive performance of acrylate emulsion adhesives. Obviously, many traditional acrylate emulsion adhesives cannot meet the increasing performance requirements, and major improvements are needed in terms of preparation methods and raw material preparation. in order to obtain satisfactory results

Method used

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  • An acrylic adhesive and a foam tape
  • An acrylic adhesive and a foam tape
  • An acrylic adhesive and a foam tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A foam adhesive tape, comprising a substrate layer, a first adhesive layer arranged on one side of the substrate layer, a second adhesive layer arranged on the other side of the substrate layer, arranged on the first The first release film layer on the other side of the adhesive layer, and the second release film layer on the other side of the second adhesive layer. The above-mentioned acrylic adhesive used in the first adhesive layer and the second adhesive layer.

[0024] Preferably, the substrate used in the substrate layer is a foam substrate, and the foam substrate is selected from polyethylene foam, polyolefin foam, polypropylene foam, polyurethane foam and ethylene foam. - One of vinyl acetate copolymer foams. The foam base material is open-cell foam, semi-open-cell foam or closed-cell foam, and the color can be black, white or gray.

[0025] As preferably, the tensile strength of the foam base material, the mechanical stretching direction (MD direction) ≥ 10MP...

Embodiment 2

[0033] The difference between embodiment two and embodiment one is that the preparation method of the acrylic adhesive is as follows: 2.6 parts by mass of acrylic acid, 0.05 parts by mass of hydroxyethyl acrylate, 67 parts by weight of n-butyl acrylate, 30 parts by mass of 17 acrylate and as Put 100 parts by weight of toluene as a polymerization solvent into a three-necked flask, remove the oxygen in the polymerization system as much as possible, add 0.1 parts by weight of AIBN dissolved in a small amount of ethyl acetate, the exothermic reaction starts, and cool when the temperature rises to 75 °C Keep the temperature for 1 hour, add 0.1 parts by mass of AIBN dissolved in a small amount of ethyl acetate, raise the temperature to 85°C, hold the temperature for 2 hours, add 0.15 parts by mass of AIBN dissolved in a small amount of ethyl acetate for 5 hours The temperature was maintained at 85°C, and when the temperature was maintained and cooled to below 70°C, 50 parts by mass o...

Embodiment 3

[0035] The difference between embodiment three and embodiment one is that, in the acrylic adhesive, 20 parts by weight of rosin resin (manufactured by Arakawa Chemical Co., Ltd.) with a softening point of 135° C. is added to 100 parts by weight of its solid content, and 73 parts by weight are added at the same time. Parts by mass of ethyl acetate to prepare an acrylic adhesive with a solid content of 35%, and the viscosity of the adhesive at 23±2° C. is 5000 mPa.s.

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Abstract

The invention discloses an acrylic adhesive and a foam tape. The acrylic adhesive includes an alkyl acrylate monomer polymer, a solvent, a tackifying resin and a crosslinking agent. The alkyl acrylate monomer polymer includes Alkyl acrylate monomer and initiator, described alkyl acrylate monomer comprises soft monomer and hard monomer, and described soft monomer comprises methyl acrylate, ethyl acrylate, n-butyl acrylate, isobutyl acrylate , isooctyl acrylate, isononyl acrylate, 2-ethylhexyl acrylate and 17 acrylates, the hard monomers include acrylic acid, dimethylaminopropyl acrylate, hydroxyethyl acrylate, acrylic acid At least two and no more than four of hydroxypropyl ester, vinyl acetate, hydroxyethyl methacrylate and styrene. In the acrylic adhesive, through the introduction of 17 acrylate, the growth of the linear chain is beneficial to reduce the molecular polarity and synthesize a polymer with a larger molecular weight, so as to improve the viscoelastic properties of the adhesive.

Description

technical field [0001] The invention relates to an acrylic adhesive and a foam adhesive tape. Background technique [0002] As an indispensable chemical product for the development of the national economy, adhesives are widely used in various fields of the national economy. my country has now become a major producer and consumer of adhesives. There are many kinds of adhesives with different components. Among them, polyurethane adhesives are an important variety in synthetic adhesives. With the advantages of low temperature performance and excellent stability, it has become the fastest-growing adhesive at home and abroad in recent years. With the continuous improvement of the level of science and technology, the technical level of my country's adhesives has also been continuously improved, and a large number of products that have reached the advanced level at home and abroad have been developed, and the products are becoming modified, reactive, multi-functional, energy-savin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J133/14C09J11/08C09J7/30C09J7/26
CPCC08L2205/03C09J11/08C09J133/14C09J2400/243C09J2423/006C09J2423/046C09J2423/106C09J2475/006C09J2301/124C08L93/04C08L57/02
Inventor 袁勇华小龙陈余谦
Owner DWELL PHOTOELECTRIC MATERIAL SUZHOU
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