同步双向拉伸工艺对锂电池隔膜成膜性能的影响
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摘要
采用双螺杆挤出机和三辊压延机制备了高密度聚乙烯-石蜡厚片,通过静态双向拉伸试验机对厚片进行拉伸试验,研究拉伸速率、拉伸温度和拉伸倍率对厚片成膜性能的影响。结果表明:当拉伸倍率为5×5倍,拉伸时间为10~25 s,拉伸温度为100~110℃时,厚片较易拉伸成膜;随着拉伸倍率的增大,厚片所制得隔膜的孔径和拉伸强度随之增大。
HDPE-paraffin thick sheets were prepared using twin screw extruder and tri roll calender. The thick sheets were stretched by static biaxial tensile test machine and the effects of stretching rate, stretching temperature, and stretching ratio on the film-forming properties of the thick sheets were investigated.The results show that when the stretching ratio is 5 × 5 times, the stretching time is 10~25 s, and the stretching temperature is 100~110 ℃, the thick sheets are easy to be stretched into films. The pore size and tensile strength of the separator increase with the increase of stretching ratio.
HDPE-paraffin thick sheets were prepared using twin screw extruder and tri roll calender. The thick sheets were stretched by static biaxial tensile test machine and the effects of stretching rate, stretching temperature, and stretching ratio on the film-forming properties of the thick sheets were investigated.The results show that when the stretching ratio is 5 × 5 times, the stretching time is 10~25 s, and the stretching temperature is 100~110 ℃, the thick sheets are easy to be stretched into films. The pore size and tensile strength of the separator increase with the increase of stretching ratio.
引文
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[2]黄锦娴,吴耀根,廖凯明,等.锂离子电池聚烯烃隔膜安全性能的探讨[J].塑料制造,2009(3):67-71.
[3]王畅,吴大勇.锂离子电池隔膜及技术进展[J].储能科学与技术,2016,5(2):120-128.
[4]刘会会,柳邦威.锂电池隔膜生产技术现状与研究进展[J].绝缘材料,2014,47(6):1-5.
[5]任小龙,刘渝洁,冯勇刚,等.电池隔膜制造方法研究进展[J].绝缘材料,2007,40(6):36-38.
[6]胡继文,许凯,沈家瑞.锂离子电池隔膜的研究与开发[J].高分子材料科学与工程,2003,19(1):215-219.
[7]毛新欣.锂离子电池新型隔膜材料的制备及其性能研究[D].新乡:河南师范大学,2012.
[8]莫名月,陈红雨.锂离子电池隔膜的研究进展[J].电源技术,2011,35(11):1438-1440.
[9]周建军,李林.锂离子电池隔膜的国产化现状与发展趋势[J].新材料产业,2008(4):33-36.
[10]沈衡,赵宁,徐坚.锂离子电池隔膜专利分析与发展趋势[J].高分子学报,2015(11):1266-1270.
[11]黄友桥,管道安.锂离子电池隔膜材料的研究进展[J].船电技术,2011,31(1):26-29.
[12]叶舒展,蔡朝晖,黄海星,等.湿法生产锂离子电池隔膜流程简介[J].塑料制造,2009(3):63-66.
[13]罗焯欣,董月平.聚乳酸的静态双向拉伸性能[J].合成树脂及塑料,2016,33(6):71-75.
[14]冯润财,伍杰锋,张广强,等.双向拉伸聚乙烯薄膜的研制[J].塑料工业,2013,41(4):102-108.
[15]潘吉林,杨伟,李忠明,等.聚合物的二次屈服现象[J].中国塑料,2005(9):20-27.