Adhesive used for low surface energy surface bonding, and preparation method thereof

Abstract

The invention discloses an adhesive used for low surface energy surface bonding. The adhesive used for low surface energy surface bonding is composed of, by weight, 30 to 40 parts of butyl acrylate, 10 to 15 parts of methyl methacrylate, 3 to 4 parts of acrylic acid, 30 to 40 parts of hydroxyethyl acrylate, 1 to 3 parts of N-hydroxymethyl acrylamide, 10 to 15 parts of hydrogenation modified rosin,0.5 to 1 part of an emulsifier, 0.1 to 0.2 parts of an initiator, 0.5 to 1.5 parts of nano-SiO2, 1 to 2 parts of an unsaturated silane coupling agent, and 80 to 120 parts of water. According to a preparation method, a nonsaturated silane coupling agent is adopted for surface treatment of nanometer particles, and then organic-inorganic nanometer composite pressure-sensitive adhesive emulsion synthesis is carried out so as to obtain a finished product. acrylic ester is taken as a main component, cooperation of soft and hard monomers and functional monomers is adopted, hydrogenation modified rosin is adopted for modification of the viscosity, and the siloxane coupling agent is adopted for modification of nano-SiO2, so that the adhesive possesses excellent wettability and bonding performanceon low surface energy materials.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to an adhesive used for low surface energy surface bonding and a preparation method thereof. Background technique [0002] Surface energy refers to an excess of energy existing on the surface of an object relative to the internal body of the object, that is, the interaction energy between surface molecules and surrounding molecules. In the theory of solid physics, surface atoms have more energy than atoms inside the material, so, according to the principle of lowest energy, atoms will spontaneously tend to the inside of the material instead of the surface. [0003] Surfaces such as metal, paper, glass, and fabric have high surface energy and are easy to bond. Polypropylene, polyethylene, polytetrafluoroethylene, and silicone rubber products have low surface energy, and ordinary adhesives are difficult to bond. And it is difficult to maintain the bonded state for a long time. The...

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Problems solved by technology

[0003] Surfaces such as metal, paper, glass, and fabric have high surface energy and are easy to bond. Polypropylene, polyethylene, polytetrafluoroethylene, and silicone rubber products have low surface energy, and ordinary adhesives are difficult to bond. and it is difficult to maintain the bonded state for a long time

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