| 摘要 |
PURPOSE:To improve dent resistance and bleeding resistance by coating a steel plate with a plastisol prepared by compounding a vinyl chloride polymer powder having two-peak type particle size distribution and an acrylic polymer powder having a specific particle size. CONSTITUTION:A plastisol is prepared by compounding 100pts.wt. of a vinyl chloride polymer powder having two-peak type particle size distribution wherein 95wt.% or more is 0.5-40mum in a particle size and 20-60wt.% is 0.5-below 5mum and 35-75wt.% is 5-40mum and there are two peaks at 1-3mum and 8-15mum, 5-60pts. wt. of an acrylic polymer powder wherein 95wt.% or more is 0.1-40mum in a particle size and an average polymerization degree is 500-30,000 and 5-60pts.wt. of a thermosetting monomer or oligomer. This plastisol is applied to the surface of a steel plate to form a film which is, in turn, gelled under heating to obtain a vinyl chloride coated steel plate having high hardness and excellent dent resistance. |
