Acrylate modified rubber pressure-sensitive adhesive, and acrylate modified rubber pressure-sensitive adhesive tape and preparation method thereof

Abstract

The invention relates to the technical field of pressure-sensitive adhesives, in particular to an acrylate modified rubber pressure-sensitive adhesive, and an acrylate modified rubber pressure-sensitive adhesive tape and a preparation method thereof. The acrylate modified rubber pressure-sensitive adhesive is composed of a component A and a component B. The component A comprises the following rawmaterials by weight: 40-50 parts of cis-1,4-polyisoprene, 2-4 parts of acrylic acid, 30-35 parts of methylbenzene, 0.2-0.4 part of benzoperoxide and 2-4 parts of hydroxypropyl methacrylate. The component B comprises the following raw materials by weight: 6-8 parts of terpene resin, 6-8 parts of coumarone resin, 1-2 parts of glycerol, 0.5-1.5 parts of an anti-aging agent and 0.6-0.8 part of a cross-linking agent. Compared with existing special pressure-sensitive adhesives for PET pressure-sensitive adhesive tapes, the acrylate modified rubber pressure-sensitive adhesive tape of the invention has the characteristics of better aging resistance, better adhesion to a PET base material, higher peel strength and excellent high viscosity.

Description

technical field

[0001] The invention relates to the technical field of pressure-sensitive adhesives, in particular to an acrylate-modified rubber pressure-sensitive adhesive, an adhesive tape and a preparation method thereof. Background technique

[0002] Rubber has a very high relative molecular weight, and has the ability to crystallize under strain conditions, so it has excellent cohesive strength and stick holding properties. The long-chain structure of rubber molecules endows it with good elasticity under low temperature conditions. There are no polar groups in the rubber, and it is very compatible with non-polar tackifying resins to make rubber pressure-sensitive adhesives. The surface energy of rubber pressure-sensitive adhesive is extremely low, so it has good wettability to the adherend, good initial adhesion, combined with its high cohesive strength, it has strong adhesive performance. However, rubber pressure-sensitive adhesives have extremely poor adhesion to c...