碳酸钙在聚氯乙烯压延成型工艺中的应用  

Application of Calcium Carbonate in Polyvinyl Chloride Calendering Process

作　　者：黎华强 Li Huaqiang(Guangdong Tian’an New Material Co.,Ltd.,Foshan 528061,China)

机构地区：[1]广东天安新材料股份有限公司,佛山528061

出　　处：《塑料助剂》2021年第6期15-17,共3页Plastics Additives

摘　　要：重点探讨碳酸钙在聚氯乙烯压延成型工艺中的应用,通过实验,得出结论:在PVC压延合成革之发泡层中或对力学性能不做要求的应用场景中,推荐使用重质碳酸钙;对力学性能要求高的应用场景,推荐使用轻质碳酸钙,纳米碳酸钙最好。为减少轻质和纳米碳酸钙的二次团聚,需进行表面改性处理。在PVC膜制品中,拉伸性能和断裂伸长率随着碳酸钙添加量的增加而减小。This paper focuses on the application of calcium carbonate in PVC calendering process.Through experiments,it is concluded that heavy calcium carbonate is recommended to be used in the foaming layer of PVC calendering synthetic leather or in the application scene where mechanical properties are not required.For applications requiring high mechanical properties,lightweight calcium carbonate and nano calcium carbonate are recommended.In order to reduce the secondary agglomeration of light and nano calcium carbonate,surface modification is required.In PVC film products,tensile properties and elongation at break decrease with the increase of calcium carbonate content.

关 键 词：碳酸钙 纳米 表面改性 压延成型 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]