| 摘要 |
PURPOSE: A coating agent is provided to be easily separated from concrete, to form a coated plywood with excellent water resistance, tear strength and tensile strength, and to increase use of the plywood. CONSTITUTION: A coating agent is prepared by the steps of: mixing vinyl acetate monomer 92.0-95.0 parts by weight with benzoyl peroxide 5.0-8.0 parts by weight and then stirring the mixture at 68.0-72.0 °C for 60-70 minutes; mixing benzene 15.0-20.0 parts by weight into the obtained compound 80.0-85.0 parts by weight; and mixing the obtained compound 60.0-62.0 parts by weight with polypropylene glycol 17.0-18.0 parts by weight, polyethylene glycol 17.0-18.0 parts by weight, methylene diphenyl diisocyanate 5.0-6.0 parts by weight and pigment (TiO2, CuCO3) 1.0-2.0 parts by weight and then preparing a compound used as the coating agent. |
