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首页> 外文期刊>Journal of Applied Polymer Science >A biaxial stretched -isotactic polypropylene microporous membrane for lithium-ion batteries
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A biaxial stretched -isotactic polypropylene microporous membrane for lithium-ion batteries

机译：双轴拉伸 - 用于锂离子电池的异职聚丙烯微孔膜

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In this article, microporous polypropylene (PP) membranes were produced with TMB-5 as -crystal nucleating agent by biaxial stretching. Influences of different concentration of TMB-5 were studied using differential scanning calorimetry and X-ray diffraction. It was found that the highest crystallinity was reached when the nucleating agent content was 0.5 wt %. The effect of stretching temperature and stretching ratio on pore size distribution and porosity of the membranes were investigated by scanning electron microscopy and mercury porosimeter, respectively. And physical properties, such as tensile strength, permeability, and puncture resistance of the microporous membrane prepared at the optimized conditions, were evaluated. Compared with commercial PP separator membrane, the as-prepared microporous membrane shows similar uniform pore size distribution and exhibits slightly higher porosity and ionic conductivities. When used as lithium-ion separator, the experimental film shows more stable cycling performance than the commercial one. (c) 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45825.
机译：在本文中，通过双轴拉伸，用TMB-5制备微孔聚丙烯（PP）膜作为晶体成核剂。使用差示扫描量热法和X射线衍射研究了不同浓度TMB-5的影响。发现当核酸剂含量为0.5wt％时达到最高结晶度。通过扫描电子显微镜和汞孔瘤计研究拉伸温度和拉伸比对膜的孔径分布和孔隙率的影响。评价在优化条件下制备的微孔膜的拉伸强度，渗透性和穿刺性等物理性质。与商业PP分离器膜相比，制备的微孔膜相比显示出类似的孔径分布，并且表现出略微较高的孔隙率和离子导电性。当用作锂离子隔膜时，实验薄膜显示比商业产品更稳定的循环性能。 （c）2017 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2018,135,45825。

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