What are the types and stability of adhesives?
the polyurethane adhesive, is a polyisocyanate compound and containing active hydrogen atoms of polyether or polyester polymerization made of high molecular weight, if polymerization with polyether, said polyether polyurethane, its hydrolysis resistance, Soft feel, but light resistance, poor heat resistance. Polyester polyurethane, which is polymerized with polyester, has good light resistance, good heat resistance and good elasticity, but is not resistant to hydrolysis. The polyurethane adhesive is not flexible because it is elastic and not sticky, Class of adhesive that can adsorb the air in the dust, fastness to color
Adhesives based on acrylate. Soft monomer is butyl acrylate, the most soft is the isooctyl acrylate, the hard monomer for the methyl methacrylate, styrene, acrylonitrile, etc., such adhesive film transparency is high, is the most commonly used bonding Agent.
Paint printing adhesive dosage is very large, is to ensure that the quality of paint printing quality varieties, through decades of improvement, the adhesive in the handle feel, stability, friction fastness and free formaldehyde made great progress.
butadiene as the main body of the adhesive, hard monomer for the styrene (styrene-butadiene emulsion), acrylonitrile (nitrile emulsion), combined with other polymers to increase the film strength, such adhesive feel Soft, but easy to yellow, cost cheap, do not need to bake fixed.
