Acrylic pressure sensitive adhesive for PU foam

PU foam double-sided tape not only has excellent sealing performance, water resistance, good hardness, good toughness, but also has the advantages of heat preservation, heat insulation, sound absorption, shock absorption, flame retardant, anti-static, good air permeability, so it has a good application prospect in household appliances, instruments, automobile industry, battery industry, and other fields. The surface of PU foam is smooth, and PU foam contains low molecular surfactants that are easy to migrate.

The general pressure-sensitive adhesive has poor adhesion to the surface of PU foam. The adhesive tape directly coated with glue is easy to residue when used. Patent CN102977804A proposed a kind of double-sided foam tape and production process, but the patent only through the corona process, the obtained double-sided foam tape viscosity and comprehensive performance are general and easy to use glue. Patent CN106978098A proposed the process of bottom coating PU foam to improve the binding force of pressure-sensitive agents on PU foam. To solve the above problems, we have made a series of improvements.

An acrylic pressure-sensitive adhesive for PU foam and a preparation method thereof are provided to overcome the above shortcomings and deficiencies of the prior art. An acrylic pressure-sensitive adhesive used for PU foam is characterized in that the acrylic pressure sensitive adhesive is an acrylic ester polymer, including Isooctyl acrylate, methyl acrylate, acrylic acid, glycidyl acrylate, azobisisobutyronitrile, ethyl acetate, the crosslinking agent of the acrylate polymer is titanate crosslinking agent, the titanate crosslinking agent mass number is 0.01 ~ 1.

The mass of each component of the acrylic pressure-sensitive adhesive is isooctyl acrylate 45 ~ 60 methyl acrylate 25 ~ 35 acrylic acids 1 ~ 8 glycidyl acrylate 0.1 ~ 3 azobisisobutyronitrile 0.2 ethyl acetate 150. Further, the mass number of each component of the acrylate polymer is as follows: 60 parts of is octyl acrylate, 35 parts of methyl acrylate, 5 parts of glycidyl acrylate, 0.2 parts of diisobutyronitrile, 0.2 parts of ethyl acetate, 150 parts.

As a professional acrylic pressure-sensitive adhesive supplier, Smprotectivefilm is committed to solving the glue problems encountered by customers due to different production equipment and processes.

Compared with traditional solvent-based pressure-sensitive adhesive, our emulsion pressure-sensitive adhesive has the advantages of environmental protection, safety, and easy operation. Using deionized water instead of traditional solvent reduces pollution to the environment and is an ideal environmental protection product.

By adjusting the proportion of the curing agents, pressure-sensitive adhesives with different adhesive forces can be obtained to meet the needs of different applications. Suitable for a variety of materials, transparent after drying.