高等学校化学学报2012，Vol.33Issue(12)：2789-2794,6.DOI:10.7503/cjcu20120181
滑石粉及混炼顺序对PA6/PP/MAPP合金相形态及力学性能的影响
Effects of Talcum Powder (Talc) and Compounding Sequence on the Morphology and Mechanical Properties of PA6/PP/MAPP Blend
王力 1凌学良 1郭朝霞 1于建1
作者信息
- 1. 清华大学化学工程系,教育部先进材料重点实验室,北京100084
- 折叠
摘要
Abstract
Talcum Powder (Talc) filled polyamide 6 ( PA6) /polypropylene ( PP) /maleic anhydride grafted polypropylene (MAPP) blends were prepared by extrusion and subsequent injection molding. Effects of Talc and compounding sequence ( one-step compounding and PA6 masterbatch method) on the morphology and mechanical properties of PA6/PP/MAPP blends were investigated. Field emission scanning microscopy shows that branched fibrils of PP phase oriented along the injection flow direction are formed in the core of specimen for Talc filled blends, instead of spherical dispersed PP domains for unfilled blend. And the sample prepared by masterbatch approach possesses finer morphology than the sample prepared by one-step compounding. The distribution of Talc in PA6 and PP phases was determined by selectively dissolving PA6 phase and thermo-gravimetric analysis of PP phase. Talc is selectively distributed in PA6 phase. The masterbatch method yields better dispersion state of Talc than the one-step compounding method. The tensile property, flexural property, impact property, heat distortion temperature and dynamic mechanical property of the materials were tested. The addition of Talc can greatly increase the flexural modulus, heat distortion temperature and dynamic storage modulus of PA6/PP/MAPP blend and the sample prepared by masterbatch approach outperforms the sample prepared by one-step compounding.关键词
滑石粉/相形态/尼龙6/聚丙烯/力学性能Key words
Talcum powder (Talc)/ Morphology/ Polyamide 6/ Polypropylene/ Mechanical property分类
化学化工引用本文复制引用
王力,凌学良,郭朝霞,于建..滑石粉及混炼顺序对PA6/PP/MAPP合金相形态及力学性能的影响[J].高等学校化学学报,2012,33(12):2789-2794,6.
