在不同流延条件下制备聚丙烯(PP)流延基膜,并对基膜施加拉伸使其形成微孔,通过差示扫描量热测试和傅立叶变换红外光谱表征基膜的结晶度、片晶厚度和晶区的取向程度等硬弹性结构参数,使用扫描电镜观察微孔膜的孔形态并测定了微孔膜的透气率,研究了流延工艺条件与基膜的硬弹性结构及拉伸成孔性之间的关系.结果表明,流延辊温度主要影响基膜结晶度和片晶厚度,牵伸比主要影响晶区取向程度.基膜硬弹性结构越完善,弹性回复率越大,拉伸后形成的微孔数量越多,孔形态和孔结构更加均匀,透气率增大.
参考文献
| [1] | Tabatabaei, SH;Carreau, PJ;Aji, A .Structure and properties of MDO stretched polypropylene[J].Polymer: The International Journal for the Science and Technology of Polymers,2009(16):3981-3989. |
| [2] | Jianlin Li;Claus Daniel;David Wood .Materials processing for lithium-ion batteries[J].JOURNAL OF POWER SOURCES,2011(5):2452-2460. |
| [3] | Farhad Sadeghi;Abdellah Ajji;Pierre J. Carreau .Analysis of microporous membranes obtained from polypropylene films by stretching[J].Journal of Membrane Science,2007(1/2):62-71. |
| [4] | Farhad Sadeghi;Abdellah Ajji;Pierre J. Carreau .Analysis of Row Nucleated Lamellar Morphology of Polypropylene Obtained From the Cast Film Process: Effect of Melt Rheology and Process Conditions[J].Polymer engineering and science,2007(7):1170-1178. |
| [5] | Tabatabaei, SH;Carreau, PJ;Ajji, A .Effect of processing on the crystalline orientation, morphology, and mechanical properties of polypropylene cast films and microporous membrane formation[J].Polymer: The International Journal for the Science and Technology of Polymers,2009(17):4228-4240. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%