潘亚敏;石素宇;常宝宝;郑国强;刘春太;

• 1:郑州大学材料科学与工程学院

摘要(Abstract)：

通过拉伸性能测试,考察了稀土类β成核剂和熔体温度对等规聚丙烯(iPP)注塑试样断裂韧性的影响,并用二维广角X射线衍射法(2D-WAXD)和差示扫描量热法(DSC)对它们的微观结构进行了研究。结果表明:纯iPP和加入β成核剂的iPP试样的断裂韧性随着熔体温度的升高而增加;稀土β成核剂因其具有较强的异相成核作用,从而使材料的断裂韧性得到较大提高。

关键词(KeyWords)： 等规聚丙烯;熔体温度;β成核剂;微观结构;断裂韧性

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(项目511173171)资助

作者(Author): 潘亚敏;石素宇;常宝宝;郑国强;刘春太;

Email:

参考文献(References)：

• [1]Mathieu C,Thierry A,Wittmann J C.Specificity and versatility of nucleating agents toward isotactic polypropylene crystal phases[J].Journal of Polymer Science Part B:Polymer Physics,2002,40(22):2504-2515.
• [2]Marco C,Gomez M A,Ellis G.Activity ofβ-nucleating agent for isotactic polypropylene and its influence on polymorphic transitions[J].Journal of Applied Polymer Science,2002,86(3):531-539.
• [3]Zhang J,Shen K Z,Na S.Vibration-induced change of crystal structure in isotactic polypropylene and its improved mechanical properties[J].Journal of Polymer Science,Part B:Polymer Physics,2004,42(12):2385-2390.
• [4]Luo F,Geng C,Wang K.New understanding in tuning toughness ofβ-polypropylene:The role ofβ-nucleated crystalline morphology[J].Macromolecules,2009,42(23):9325-9331.
• [5]Pantani R,Coeeorullo1.Morphology evolution during injection molding:Effect of packing pressure[J].Polymer,2007,48(9):2778-2790.
• [6]Chen Yanhui,Zhong Ganji,Wang Yan.Unusual tuning of mechanical properties of isotactic polypropylene using counteraction of shear flow andβ-nucleating agent onβ-form nucleation[J].Macromolecules,2009,42(12):4343-4348.
• [7]沈静姝,任宏燕,况勋,等.β晶型聚丙烯塑性形变过程中的形态变化[J].高分子学报,1994,(6):749-752.
• [8]Viana J C,Cunha A,Billon N.The effect of the skin thickness and spherulite size on the mechanical properties of injection mouldings[J].Journal of Materials Science,2001,36(18):4411-4418.