MgO was used to thicken the low pressure sheet molding compound and crystalline unsaturated polyester was grinded into powder to regulate the viscosity in cavity of hot mold in this process.

• 摘要采用氧化镁为增稠剂、结晶树脂以粉料形式加入而降低片材热模内粘度的工艺，改进了对低压片状模塑料的增稠方法。