Adhesive material for adhesive tapes and preparation method thereof

Abstract

The invention discloses an adhesive material for adhesive tapes. The invention is characterized in that the adhesive material is prepared by mixing 1000 parts by mass of acrylate prepolymer resin with the solid content of 40%, 3-10 parts by mass of curing agent and 200-500 parts by mass of diluting solvent. The preparation method of the acrylate prepolymer resin comprises the following steps: adding 350 parts of butyl acrylate, 150-200 parts of 2-ethylhexyl acrylate, 250-350 parts of ethyl methacrylate, 200-300 parts of functional monomer, 100-150 parts of glycidyl methacrylate, 1200 parts of solvent and 8-20 parts of initiator into a reaction kettle, and stirring and mixing; and in a nitrogen protective atmosphere, heating to 70-75 DEG C to react for 4-6 hours, and adding a solvent until the solid content reaches 40%. The adhesive material for adhesive tapes has the advantages of high heat resistance, high aging resistance, high working properties and favorable product performance, is convenient to use, and can be used for manufacturing various single-sided and double-sided pressure-sensitive adhesive tapes and optical clear adhesive tapes.

Description

Technical field [0001] The invention belongs to an adhesive and its preparation, and relates to an adhesive material for tape and a preparation method thereof. The adhesive material prepared by the present invention can be used in the production of various types of pressure-sensitive adhesive tapes with substrates and adhesive tapes without substrates, and is particularly suitable for labels, packaging adhesive tapes, equipment surface protective films, metal membrane switch films, Manufacture of various single and double-sided pressure-sensitive tapes (films), optical transparent tapes (films), surface protective films for computer keyboard films, large-scale high-end advertising surface films. Background technique [0002] With the rapid development of new technologies and markets in various industries such as aerospace, military equipment, communications, computers, industrial automation control equipment, household appliances, optical equipment, batteries, packaging, automobi...

AI Technical Summary

Problems solved by technology

With the technological innovation and the improvement of product performance requirements, the traditional adhesive materials and bonding methods can no longer meet the needs of the market. The research and development of various new adhesive materials are in the ascendant, bringing huge development opportunities for adhesive materials.

[0003] Existing acrylate adhesive materials for tapes: one is to add low-molecular-weight reactive acrylate monomers or oligomers into the acrylate prepolymer resin as the main component, and carry out physical stirring and mixing. The adhesive tape prepared by this method Although the adhesion properties before and after ultraviolet light irradiation can meet the requirements, but after the reactive acrylate monomer is mixed with the acrylate prepolymerized resin, the cohesion of the adhesive layer is likely to decrease, which leads to the adhesion of the adhesive layer on the substrate. Second, the peel strength of ordinary pressure-sensitive tapes is low (generally below 1200g / 25mm), and some of them increase the peel strength by adding tackifying resins (such as rosin esters). It is easy to turn yellow under the surface, not only cannot meet the requirements of optical transparent tape, but also difficult to meet the performance requirements of metal membrane switches, computer keyboards, etc.

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