碳酸钙填充β-成核PP复合材料的力学性能  

Mechanical Properties of CaCO_3 Filled β-Polypropylene Composites

作　　者：章自寿[1] 张均萍[1] 张扬帆[1] 麦堪成[1] 

机构地区：[1]中山大学化学与化学工程学院材料科学研究所∥聚合物基复合材料及功能材料教育部重点实验室∥广东省高性能树脂基复合材料重点实验室∥广东省消防科学技术重点实验室,广东广州210275

出　　处：《中山大学学报（自然科学版）》2014年第2期73-77,82,共6页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家自然科学基金资助项目(51173208;51373202);广东省自然科学重点基金资助项目(S2011020001212);高等学校博士学科点专项科研基金资助项目(20110171120018)

摘　　要：为研究β-晶对碳酸钙填充PP复合材料力学性能的影响,该文采用负载β-成核剂的纳米碳酸钙(β-CC)混合纳米碳酸钙(CC)或微米碳酸钙(WC)填充PP制备了β-PP复合材料及其PP-g-MA、POE-g-MA和EVA-g-MA作为相容剂的增容复合材料。力学性能研究结果表明,随着CC和WC用量增加,PP拉伸强度降低、模量提高;β-CC填充PP复合材料模量提高,拉伸强度变化不大。PP-g-MA增容提高填充PP复合材料拉伸强度、杨氏模量和冲击强度;POE-g-MA增容明显提高冲击强度,EVA-g-MA增容降低拉伸性能。β-CC/PP复合材料冲击强度随着β-CC用量增加而提高,β-CC/CC/PP和β-CC/WC/PP冲击强度高于CC/PP(w(CC)/w(PP)=5/95)和WC/PP(w(WC)/w(PP)=5/95)复合材料归结于高韧性β-晶形成。In order to investigate the influence of β-phase on the mechanical properties of CaCO3/poly-propylene （CaCO3/PP）composites,β-PP composites were prepared by PP filled with the mixture of nano-CaCO3 （CC）supported with β-nucleating agent （β-CC）and CC or micro-CaCO3 （WC）.Using PP-g-MA,POE-g-MA and EVA-g-MA as compatibilizers,the compatibilized composites were also pre-pared.The results indicated that the tensile strength of PP composites decreased and tensile modulus in-creased with increasing the content of CaCO3 .Addition ofβ-CC increased tensile modulus of PP and had no influence on the tensile strength of PP.Compatibilization of PP-g-MA increased the tensile strength, tensile modulus and impact strength of filled PP composites.Compatibilization of POE-g-MA significantly increased the impact strength of filled PP composites.Compatibilization of EVA-g-MA decreased the ten-sile properties of filled PP composites.The impact strength of β-CC/PP composites increased with in-creasing the content ofβ-CC and the impact strength ofβ-CC/CC/PP and β-CC/WC/PP were higher than those of CC/PP（w（CC）/w（PP）=5/95 ）and WC/PP（w（WC）/w（PP）=5/95 ）,due to the for-mation ofβ-phase.

关 键 词：聚丙烯 碳酸钙 β-成核作用 力学性能 CACO3 

分 类 号：O631.5[理学—高分子化学]