| abstract |
The invention discloses a moisture-absorbing curable acrylate pressure-sensitive adhesive and a preparation method thereof. It consists of the following raw materials in parts by mass: 20-60 parts of hard monomers, 30-80 parts of soft monomers, acrylic acid-butyl acrylate (1 : 9) 5-8 parts of copolymer, 1-3 parts of composite emulsifier, 0.5-3 parts of ammonium persulfate, 40-70 parts of trifunctional isocyanate, 15-25 parts of xylene resin, 0.5-1 part of chain transfer agent, 6-10 parts of acid-base regulator, 45-65 parts of solvent, and 45-85 parts of water-absorbing filler, the moisture-absorbing and curing acrylate pressure-sensitive adhesive prepared by the invention can increase the bonding strength several times after absorbing water in a few days. Above, the initial shear resistance is 300-500kPa, and it can reach 3-5Mpa when placed at room temperature for 2d; and it can be stored in a sealed polyethylene bag before use, adding silica gel desiccant can be stored for a long time; and has high peel strength, Good stickiness and initial viscosity, good aging resistance and water resistance, good colloidal transparency, can be widely used in automobile, aircraft, machinery, construction, packaging and other industries. |