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Adhesive tape for bonding low-surface-energy material and preparation method thereof

A low surface energy and material technology, applied in the direction of adhesives, adhesive types, ester copolymer adhesives, etc., can solve the problems of poor aging resistance, oxygen sensitivity, poor adhesion, etc., and achieve easy production and preparation Simple process, good adhesion effect

Inactive Publication Date: 2012-06-20
TONSAN ADHESIVES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although rubber-based pressure-sensitive adhesives have good adhesion to these low-surface materials, they are sensitive to oxygen and have poor aging resistance due to residual double bonds.
However, polysiloxane pressure-sensitive adhesives cannot be used in large quantities due to their high price.
Currently on the market, pressure sensitive tapes based on acrylate copolymers have poor adhesion to low surface energy materials

Method used

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  • Adhesive tape for bonding low-surface-energy material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In a three-necked flask equipped with a reflux device, add 25 parts of isooctyl acrylate, 10 parts of methyl methacrylate, 52 parts of n-butyl acrylate, 5 parts of acrylic acid, 8 parts of hexafluorobutyl acrylate, and 140 parts of ethyl acetate And 0.2 parts of azobisisobutyronitrile, blow nitrogen, stir for half an hour, discharge oxygen, put in a water bath at 60°C and continue to react with nitrogen for 6 hours.

[0023] Add 0.5 parts of aluminum acetylacetonate to the obtained acrylate polymer solution and let it stand for degassing, then apply it on the release film, and dry it at 110°C for 3 minutes to ensure that the thickness of the dried film is 50um, and then match it with a thickness of 30um The corona-treated PET film was composited, placed at room temperature for 7 days and then tested for related properties.

Embodiment 2

[0025] In a three-necked flask equipped with a reflux device, add 35 parts of isooctyl acrylate, 12 parts of vinyl acetate, 41 parts of n-butyl acrylate, 2 parts of acrylic acid, 3 parts of (meth)hydroxyethyl acrylate, 7 parts of decaacrylate Difluoroheptyl ester, 140 parts of toluene and 0.2 part of benzoyl peroxide were fed with nitrogen, stirred for half an hour, and oxygen was discharged, put into a water bath at 75°C and continued to react with nitrogen for 6 hours.

[0026] Add 0.5 parts of Desmodur N75 to the obtained acrylate polymer solution and let it stand for degassing, then apply it on the release film, and dry it at 110°C for 3 minutes to ensure that the thickness of the dried film is 50um, and then mix with 30um thick The corona-treated PET film is composited, placed at room temperature for 7 days and then tested for related properties.

[0027] Table 1 lists the adhesive properties of the examples. The results show that the adhesive tape of the invention is we...

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Abstract

The invention provides an adhesive tape for bonding a low-surface-energy material. The adhesive tape consists of the following components in percentage by mass: (1) 30-50 percent of an acrylic ester monomer, (2) 50-70 percent of ethyl acetate or toluene serving as a solvent, (3) 0.2-1.5 percent of a crosslinking agent and (4) 0.1-0.6 percent of azobisisobutyronitrile or benzoyl peroxide serving as an initiator, wherein the acrylic ester monomer consists of 60-90 percent of soft monomer, 5-35 percent of hard monomer, 1-5 percent of crosslinking monomer and 2-10 percent of fluorine-containing acrylic ester. A preparation method of the adhesive tape comprises the following steps of: preparing an acrylic ester polymer solution, adding the acrylic ester monomer, the solvent and the initiator into a three-neck flask provided with a reflux unit, introducing nitrogen gas, stirring for half an hour, exhausting oxygen, putting into a water bath boiler, and reacting at the temperature of 60-80 DEG C under the protection of nitrogen gas for 6 hours; and coating the adhesive tape: mixing an obtained acrylic ester polymer solution with a crosslinking agent, standing, defoaming, coating onto a releasing film with a bar, drying at the temperature of 110 DEG C for three minutes, compounding with a PET (Polyethylene Terephthalate) film which is 30 mum in thickness and is subjected to corona surface treatment, and standing at the normal temperature for seven days.

Description

technical field [0001] The invention relates to a pressure-sensitive adhesive tape, in particular to an adhesive tape used for bonding low surface energy materials and a preparation method thereof. Background technique [0002] In the automotive, furniture and construction industries, some low surface energy non-polar materials are widely used, such as polypropylene, polyethylene, EPDM rubber, polytetrafluoroethylene, etc. [0003] Although rubber-based pressure-sensitive adhesives have good adhesion to these low-surface materials, they are sensitive to oxygen and have poor aging resistance due to residual double bonds. However, polysiloxane-based pressure-sensitive adhesives cannot be used in large quantities due to their high price. Currently on the market, pressure sensitive tapes based on acrylate copolymers have poor adhesion to low surface energy materials. Contents of the invention [0004] The object of the present invention is to provide a kind of adhesive tape...

Claims

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Application Information

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IPC IPC(8): C09J7/02C09J133/08C08F220/18C08F220/22
Inventor 何利军李印柏王兵林新松翟海潮
Owner TONSAN ADHESIVES INC
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