双层包覆改性碳酸钙在高填充聚酯中的应用  

Application of Double-coated Surface Modification of Calcium Carbonate in Highly Filled Composite Material

作　　者：杨冰[1] 许颖[1] 季君晖[1] 张自强[2] 刘雷鹏 张以河[2] 张长安[1] 王小威[1] 李玉荣 李丹[1] 

机构地区：[1]中国科学院理化技术研究所,北京100190 [2]中国地质大学材料科学与工程学院,北京100083 [3]地球卫生环保新材料有限公司,吉林延边133000

出　　处：《塑料》2014年第1期4-7,40,共5页Plastics

摘　　要：以聚对苯二甲酸己二酸丁二醇酯(PBAT)树脂为基材,以50%表面改性的CaCO3为填充物制备出高填充复合材料。通过对CaCO3表面改性剂的种类以及复配研究,采用双层包覆技术制备出力学性能较好的高填充全生物降解复合材料。采用0.5%KH560和0.5%钛酸酯102双层包覆法表面改性碳酸钙,制备成复合材料拉伸强度达到20.28 MPa,相对于未改性的复合材料拉伸强度提高了39%,相对于单层KH560和钛酸酯102表面改性技术制备成的复合材料拉伸强度分别提高了16.8%和26.6%。并通过动态流变学的Cole-Cole理论研究了不同改性方法在PBAT/CaCO3复合材料中对两相间相容性以及弹性模量的影响,为高填充复合材料的开发与应用奠定了基础。Poly（ butyleneadipate-co-terephthalate） （PBAT） was used as a base material to prepare high filled composite materials with 50 % surface-modified CaCO3. Through the types and the complex methods of surface modifier of CaCO3 , double-coated technology was found to be a better method to prepared high mechanical properties of highly filled biodegradable composite materials. Using 0.5 % KH560 silane coupling agent and 0.5 % titanate 102 coupling agent as double-coated surface modification of CaCO3 to prepared highly filled composite material can reach to a tensile strength of 20. 28 MPa, which was increased by 39 % compared with the unmodified composite, and comparing with the single layer surface modification of KH560 and titanate102 were increased by 16.8 % and 26.6 % , respectively. The Cole-Cole theory of Rheology was used to study the compatibility and the elastic modulus between the two phases of PBAT/CaC03 which was modified by different modification methods. A foundation for the development and application of high-filled composite was provided.

关 键 词：双层包覆表面改性 PBAT(聚对苯二甲酸己二酸丁二醇酯) 偶联剂 碳酸钙 COLE-COLE模型 

分 类 号：TQ325[化学工程—合成树脂塑料工业]