On high temperature acrylic pressure sensitive adhesive

Acrylic pressure-sensitive adhesive is widely used in consumer electronics, new energy, home life, and other fields. Although the acrylic pressure-sensitive adhesive market share is expanding, with the intensification of market competition, the heat resistance of pressure-sensitive adhesive, especially the thick adhesive layer adhesive products, have higher requirements, and the vast majority of acrylic pressure-sensitive adhesive, under high-temperature conditions, prone to residual glue condition.

Researchers usually use silicone modification, the introduction of high-temperature resistant curing agents, amide high-temperature resistant monomers, and other ways to improve the high-temperature resistance of acrylic pressure-sensitive adhesives.

Known to be a kind of organic silicone-modified high-temperature resistant pressure sensitive adhesive involved a silicone and acrylate-2 -octyl twelve ester monomer synergy modification methods, at the same time with high-temperature resistance of epoxy curing agent 240 GA- crosslinking curing, finally made the sample, can place 2 h under 220 ℃, stripping without residue; still have a kind of excellent resistance to high temperature and pressure sensitive adhesive involved an N-vinyl formamide and acrylic- 2-octyl twelve ester monomer synergy modification methods, also with high-temperature resistance of epoxy curing agent 240 GA-crosslinking curing, finally made the sample, can place 1 h under 180 ℃, stripping without glue.

Although the above research has significantly improved the high-temperature resistance of acrylic pressure-sensitive adhesive, the price of silicone, epoxy curing agent is high, and high temperature curing agent and amide high-temperature monomer, the improvement of high-temperature resistance of acrylic pressure-sensitive adhesive is limited, high-temperature placement time is short, which will affect the further application of related products.

Therefore, it is necessary to provide a high-temperature-resistant acrylic pressure-sensitive adhesive. Instead of using an epoxy curing agent and amide monomer, the non-amide polymer is organically combined with carbon nanotubes. Through polymerization with commonly used acrylic soft and hard monomers and functional monomers, the acrylic pressure-sensitive adhesive with low price and more durable heat resistance is obtained.