共混工艺对PA6/EPDM/nano-CaCO_3三元复合材料形态与性能的影响  

The Effect of Blending Technology on Morphology and Properties of PA6/EPDM/nano-CaCO_3 Ternary Composite

作　　者：王晓东[1] 徐科杰[1] 王旭[1] 许向彬[1] 

机构地区：[1]浙江工业大学化学工程与材料学院,浙江杭州310014

出　　处：《塑料》2009年第5期11-13,共3页Plastics

基　　金：国家自然基金项目(50573067)

摘　　要：研究两种共混工艺对PA6/EPDM/nano-CaCO3三元复合材料形态与性能的影响。即一步法:PA6、EPDM和nano-CaCO3直接熔融挤出共混;二步法:EPDM和nano-CaCO3先混炼制得母料,母料再与PA6熔融挤出共混。研究发现:二步法工艺会使nano-CaCO3选择性分布在EPDM相中形成"沙袋结构"。"沙袋结构"粒子具有独特的"微纤化"断裂耗能方式,可以有效地改善复合材料的韧性与刚性。The effect of blending technology on properties and morphology of PA6/EPDM/nano-CaCO3 ternary composite was investigated. One called one-step method, which EPDM and nano-CaCO3 was directly melt blended with PA6 matrix. Another called two-step method,which EPDM and nano-CaCO3 was mixed by the twin-roll mill to get master batch first,and then the master batch was melt blended with PA6 matrix. The results showed the ternary composite prepared via two-step method could form a ＂sandbag structure＂. Toughness and stiffness of the ternary composite with sandbag structure particle would be improved with the fiber-forming energy dissipation mode.

关 键 词：尼龙-6 纳米碳酸钙 增韧 共混工艺 沙袋结构 

分 类 号：TB332[一般工业技术—材料科学与工程]