| 摘要 |
PURPOSE:To provide the subject polyester-based thermosetting resin film excellent in dimensional stability, flexibility, antimelting properties and chemical resistance by specifying the breaking strength, dry heat shrinkage factor, breaking elongation, antimelting properties and alkali resistance, etc. CONSTITUTION:The objective thermosetting resin film is obtained by dry blending 85 pts.wt. copolyester resin composed of terephthalic acid, ethylene glycol and neopentyl glycol with 15 pts.wt. epsilon-caprolactam blocked isocyanate, 0.3 pt.wt. curing accelerator and 1.0 pt.wt. leveling agent, melt kneading the resultant blend at 100 deg.C, cooling and solidifying the blend, pulverizing the solidified blend, sprinkling the obtained powder on a steel plate, heat-treating the sprinkled powder, cooling the formed film and peeling the formed film. |
