Aluminum foil adhesive tape and preparation method thereof

Abstract

The invention relates to an aluminum foil tape and a preparation method thereof. The aluminum foil tape comprises an aluminum foil layer, a first adhesive layer; a release layer; the aluminum foil layer is covered with the second adhesive layer, the second adhesive layer is prepared from, by mass, 100 parts of polyester polyol, 250-400 parts of solvent, 1-5 parts of silane coupling agent KH550, and the silane coupling agent KH550 can be hydrolyzed when meeting water in the solvent. Si-OH bonds in the hydrolyzed silane coupling agent react with hydroxyl groups in the polyester polyol to realize grafting of the coupling agent, and the rest Si-OH bonds in the coupling agent can be dehydrated and condensed to form a compact Si-O cross-linked network which has certain water resistance, so that the water resistance can be effectively improved; and the prepared aluminum foil tape can bear the invasion of water vapor without influencing the adhesion of the aluminum foil tape.

Description

technical field [0001] The invention relates to the technical field of adhesive tapes, in particular to an aluminum foil adhesive tape and a preparation method thereof. Background technique [0002] Aluminum foil tape has the functions of good viscosity, strong adhesion and anti-aging, and is widely used in refrigerators, air conditioners, automobiles, petrochemicals, bridges, hotels, electronics and other industries. The existing aluminum foil tape is generally composed of a release paper, an adhesive layer and an aluminum foil layer, as shown in "A Kind of Aluminum Foil Tape" disclosed in the Chinese invention patent application with patent number CN201910037787.1 (publication number CN109735248A). When using, peel off the adhesive layer from the release paper, and let the aluminum foil layer stick through the adhesive layer. [0003] For example, in the production process of the refrigerator, the aluminum foil tape can bond and fix the side plate and the condenser tube o...

AI Technical Summary

Problems solved by technology

However, during the condensation and heat exchange process of the condenser tube, the aluminum foil tape is prone to thermal fatigue and aging due to heat, which leads to the reduction of the stickiness and adhesion of the aluminum foil tape, and the condensation tube is easy to fall off from the side plate, which eventually leads to refrigerators and other freezer equipment. Poor cooling and noise pollution faults

[0004] In addition, if the aluminum foil tape is not effectively waterproofed during storage and use, when water vapor intrudes into the adhesive layer, the viscosity of the aluminum foil tape will be greatly reduced, affecting the use of the aluminum foil tape

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