TPU型锂电池溶胀胶带的制备及其溶胀性能的研究  

Preparation and Swelling Performance of TPU Lithium Battery Swelling Tape

作　　者：林龙 马肥 陈斌 王建 LIN Long;MA Fei;CHEN Bin;WANG Jian(Hua Feng TPU Co.Ltd,Ruian 325000,China;College of Chemical and Molecular Engineering,East China University of Science and Technology,Shanghai 200237,China)

机构地区：[1]浙江华峰热塑性聚氨酯有限公司,浙江瑞安325000 [2]华东理工大学化学与分子工程学院,上海200237

出　　处：《聚氨酯工业》2024年第6期14-17,共4页Polyurethane Industry

摘　　要：研究了不同工业品热塑性聚氨酯(TPU)膜在锂离子电池电解液中的溶胀性能和耐溶解性。将一种聚酯二醇和少量氢化端羟基聚1,4-丁二烯(H-HTPB)混合为低聚物多元醇,与二苯基甲烷二异氰酸酯和1,4-丁二醇反应制备了不同H-HTPB比例的TPU薄膜,研究了不同硬度以及NCO/OH基团摩尔比(R值)对材料溶胀性能和耐溶解性的影响。结果表明,聚酯型TPU的溶胀性能最优但耐热电解质溶解性较差,通过添加质量分数10%的H-HTPB,邵A硬度90的TPU膜室温下2 h溶胀率达到30%,85℃下1 h形态保持完好。The swelling properties and solubility resistance of a series of industrial thermoplastic polyurethane(TPU)films in lithium ion battery electrolyte were studied.TPU films with different proportions of H-HTPB were prepared with a polyester diol and a small amount of hydrogenated hydroxy-terminated poly1,4-butadiene(H-HTPB)as mixture,reacted with diphenylmethane diisocyanate and 1,4-butadiol.The effects of hardness and nNCO/nOH(R value)on swelling property and solubility resistance were studied.The results showed that the polyester TPU had the best swelling performance but poor hot electrolyte solubility resistance.By adding 10%H-HTPB,the swelling ratio of 90A hardness polyester TPU film reached 30%at room temperature after 2 h,and the film kept intact at 85℃for 1 h.

关 键 词：热塑性聚氨酯膜 锂离子电池电解液 溶胀性能 耐溶解性 氢化端羟基聚1 4-丁二烯 

分 类 号：TQ333.95[化学工程—橡胶工业]