Pressure sensitive adhesive with high stripping force and preparation method thereof

Abstract

The invention discloses a pressure sensitive adhesive with the high stripping force. The pressure sensitive adhesive is prepared from the following raw materials, in parts by weight: 45-55 parts of 2-ethylhexyl acrylate, 4-9 parts of acrylamide, 40-50 parts of butyl acrylate, 7-12 parts of hydroxypropyl acrylate, 3-7 parts of methyl acrylate, 70-90 parts of ethyl acetate and butanone with the massratio being 1 to 1, 1.3-2.2 parts of azodiisobutyronitrile, 0.6-1 part of 1-dodecanethiol and 3-5 parts of tuluene diisocynate. The pressure sensitive adhesive with the high stripping force has the good initial adhesion and persistent adhesion, the 180-degree stripping force is high and can be held at the temperature of 90 DEG C, and the pressure sensitive adhesive can adhere firmly, and has thegood anti-plasticizer property and temperature resistance. No benzene and methylbenzene serves as solvents in the synthesis process of the pressure sensitive adhesive, and the pressure sensitive adhesion is low in toxicity, environmentally friendly, and wide in application range.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a pressure-sensitive adhesive with high peeling force and a preparation method thereof. Background technique [0002] Pressure-sensitive adhesives, as the name implies, are pressure-sensitive adhesives. It is a type of adhesive that can be firmly bonded to the adherend without resorting to solvents, heat or other means, and only needs to apply light finger pressure. The characteristics of pressure-sensitive adhesives are that they are easy to stick, not difficult to remove, and not damaged when peeled off, and the adhesive layer will not dry up in a long period of time, so pressure-sensitive adhesives are also called self-adhesives. It is precisely because of the above-mentioned characteristics of pressure-sensitive adhesives that pressure-sensitive adhesive products have a very wide range of uses. [0003] Acrylic pressure-sensitive adhesive is currently the most widely used ...

AI Technical Summary

Problems solved by technology

[0005] 1. The peeling force and adhesion of the pressure-sensitive adhesive are not high enough, and the bonding firmness is not enough;

[0006] 2. The pressure-sensitive adhesive has poor plasticizer resistance and temperature resistance;

[0007] 3. Benzene, toluene, etc. are used as solvents in the synthesis of pressure-sensitive adhesives, which are highly toxic and not environmentally friendly, which limits their scope of use

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