Novel thermally-bonded double-sided tape and making and use methods thereof

Abstract

The invention discloses a novel thermally-bonded double-sided tape and a making method thereof. The novel thermally-bonded double-sided tape comprises a heating foamed adhesive layer and a pressure-sensitive adhesive layer coating the upper surface and the lower surface of a substrate layer respectively, wherein glue used in the heating foamed adhesive layer is obtained by mixing and baking the following components in parts by mass: 100 parts of a pressure-sensitive adhesive, 0.5-5 parts of a foaming agent, 0.5-5 parts of a foaming aid, 1-3 parts of a crosslinking agent and 10-30 parts of a solvent. The thermally-bonded double-sided tape made by adopting the making method has high bonding durability. Through transient heating and sticking of the thermally-bonded double-sided tape at the temperature of 90 DEG C and under the pressure of 200KPa for ten seconds, extremely high bonding strength can be achieved on surfaces such as concavo-convex surfaces, porous surfaces and oblique surfaces.

Description

technical field [0001] The invention relates to a novel heat-adhesive double-sided adhesive tape and a preparation method thereof, belonging to the technical field of adhesive tapes. Background technique [0002] With the rapid development of the electronics industry, all the electronic components have formed a whole in structure, making the electronic components take a big step towards miniaturization, low power consumption, intelligence and high reliability. At the same time, electronic products are also Develop in the direction of thinning and portability. Therefore, double-sided tape has undoubtedly become the bonding and fixing material for various electronic components and components inside consumer electronics products, gradually replacing the traditional screw fixing method. [0003] When bonding parts with concave-convex, porous, skewed shapes, etc. on the surface, the adhesive strength of the double-sided tape is often limited, because the existence of these surfa...

AI Technical Summary

Problems solved by technology

[0003] When bonding parts with concave-convex, porous, skewed shapes, etc. on the surface, the adhesive strength of the double-sided tape is often limited, because the existence of these surface shapes reduces the bonding area of ​​the adhesive in the double-sided tape, resulting in sticking The receiving strength is limited and cannot be fully utilized

At present, some double-sided tapes on the market have good bonding strength and durability, but they are limited to high-gloss, flat bonding surfaces. For bonding surfaces such as concave-convex surfaces, porous surfaces, and skewed surfaces, double-sided The adhesive contained in the surface tape cannot obtain a larger contact and bonding area through creep, extension, and infiltration. Although it can obtain better initial bonding strength, it often cannot obtain lasting bonding strength, which eventually leads to sticking. Failed to pick up job

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