塑料原料 plastic material
添加剂 addition agent; doping agent; intrusion agent; addition; annexing agent; additive
弹性体 elastic mass; elastomer; spring mass; elastic body; elastic solid
废塑料 plastic waste
季戊四醇 pentaerythritol; tetramethylolmethane
钛白粉 titanium white powder
专业词典上查的。希望对你有帮助。