液态反应树脂成型旋转模塑发泡工艺实验研究  

Study on Rotational Foaming Molding of Liquid Reactive Resin

作　　者：张军[1] 宋本超[1] 张秀丽[1] 张恒[1] 

机构地区：[1]郑州大学材料工程学院,河南郑州450052

出　　处：《塑料工业》2006年第8期29-31,共3页China Plastics Industry

基　　金：国家自然科学基金资助项目(批准号:10472160)

摘　　要：以不饱和聚酯树脂作为非发泡树脂成型制品的外壳,用聚氨酯树脂发泡形成泡沫芯层,研究了液体反应树脂的旋转模塑发泡成型泡沫夹层制品的工艺过程。介绍了成型原理,分析了成型非发泡整体外壳的影响因素及发泡过程中温度、配料比对泡体质量的影响。实验表明:随着主轴转速的增大,制品外壳气泡数量增多;异氰酸脂和聚醚的质量比接近1∶1,稳定剂的质量分数为0.5%～5%时能够得到泡孔密度均匀致密的泡沫夹芯。The process of rotational foaming molding of liquid reactive resin was studied, with unsaturated polyester resin as the shell of unfoamed resin moulded part, and polyurethane as foamed core layer. The principle of this process was introduced, and the factors which affected the process of making the unfoaming layer was discussed. The effects of temperature and the compounding ratio of raw materials on the foaming process were analyzed. The results indicated that the bubble number of the part increased with the increase of the main axial revolution speed, and an uniform and compact foamed core could be obtained when the ratio of isocyanate and polyether was 1 ： 1 and the mass percentage of stabilizing agent was 0.5 % ～ 5 %.

关 键 词：旋转模塑 液体反应树脂 发泡 不饱和树脂 聚氨酯 

分 类 号：TQ328[化学工程—合成树脂塑料工业]