| 张亮,刘成跃,李南华,李丽姿,孔庾玲,巫彩燕,苏萃扬,胡志军,陈华,游艳芝.温度处理对纤维素基隔膜性能的影响研究[J].中国造纸,2025,44(10):67-76 |
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| 温度处理对纤维素基隔膜性能的影响研究 |
| Study on the Effect of Temperature Treatment on the Properties of Cellulose-based Separators |
| 收稿日期：2025-06-23 修订日期：2025-07-16 |
| DOI：10.11980/j.issn.0254-508X.2025.10.008 |
| 关键词: 纤维素基隔膜 吸液率 透气度 抗张强度 击穿电压 |
| Key Words:cellulose-based separator liquid absorption rate air permeability tensile strength breakdown voltage |
| 基金项目:浙江省博士后科研项目择优资助项目（ZJ2023167）；浙江科技大学环境与资源学院青年教师创新研究项目（HZQY20241）；浙江省丽水市遂昌县重点研发计划项目（SCX2023ZDYF02）。 |
| 作者 | 单位 | 邮编 | | 张亮* | 浙江科技大学环境与资源学院,浙江杭州,310023 | 310023 | | 刘成跃 | 浙江凯恩新材料有限公司,浙江丽水,323300 | 323300 | | 李南华 | 浙江凯恩新材料有限公司,浙江丽水,323300 | 323300 | | 李丽姿* | 浙江凯恩新材料有限公司,浙江丽水,323300 | 323300 | | 孔庾玲 | 浙江凯恩新材料有限公司,浙江丽水,323300 | 323300 | | 巫彩燕 | 浙江凯恩新材料有限公司,浙江丽水,323300 | 323300 | | 苏萃扬 | 浙江科技大学环境与资源学院,浙江杭州,310023 | 310023 | | 胡志军 | 浙江科技大学环境与资源学院,浙江杭州,310023 | 310023 | | 陈华* | 浙江科技大学环境与资源学院,浙江杭州,310023 | 310023 | | 游艳芝* | 浙江科技大学环境与资源学院,浙江杭州,310023
浙江凯恩新材料有限公司,浙江丽水,323300
东北林业大学材料科学与工程学院,黑龙江哈尔滨,150040 | 150040 |
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| 摘要:本研究系统考察温度处理对2种定量纤维素基隔膜（E20-L/E40-H）多尺度性能的影响机制。通过中高温（125 ℃/48 h、250 ℃/20 min）与低温（-40 ℃/48 h、-60 ℃/48 h）处理，综合表征隔膜的物理特性、力学性能、结构演化、热及电气性能。结果表明，极端低温（-60 ℃）使E40-H吸液率从常温的104.6%提升至113.0%，但E20-L从常温的84.6%下降至81.3%，高温（250 ℃）则显著降低二者吸液率。125 ℃处理通过氢键增强提升力学强度（E20-L的耐破强度从常温的81.4 kPa提升至86.1 kPa，E40-H则是从96.3 kPa增至105.3 kPa），250 ℃下因纤维素降解导致性能劣化。E20-L在-60 ℃下结晶度指数由常温的71.6%降至47.1%，揭示低定量隔膜对极端低温更敏感。结构分析证实高温通过热解破坏纤维结构，从而引发纤维塌陷，低温诱导角质化。电气性能呈现低温提升击穿电压但增加ESR、高温全面劣化的拮抗规律。 |
| Abstract:In this study， the influence mechanism of temperature treatment on the multi-scale performance of two quantitative cellulose-based separators (E20-L/E40-H) was systematically investigated. The physical properties， mechanical properties， structural evolution， thermal and electrical properties of the separator were comprehensively characterized by medium and high temperature (125 ℃/48 h， 250 ℃/20 min) and low temperature (-40 ℃/48 h， -60 ℃/48 h) treatment. The results showed that extreme low temperature (-60 ℃) increased the liquid absorption rate of E40-H from 104.6% at room temperature to 113.0%， but E20-L decreased from 84.6% at room temperature to 81.3%， and high temperature (250 ℃) significantly reduced the liquid absorption rate of both. 125 ℃ treatment enhanced the mechanical strength through hydrogen bond enhancement (the burst strength of E20-L increased from 81.4 kPa to 86.1 kPa at room temperature， while that of E40-H increased from 96.3 kPa to 105.3 kPa)， and 250 ℃ led to performance degradation due to cellulose degradation. The crystallinity index of E20-L decreased from 71.6% at room temperature to 47.1% at -60 ℃， revealing that the low-quantitative separator was more sensitive to extreme low temperature. Structural analysis confirmed that high temperature destroyed the fiber structure by pyrolysis， which led to fiber collapse， and low temperature induced keratinization. The electrical performance showed an antagonistic law of increasing breakdown voltage at low temperature but increasing ESR and overall deterioration at high temperature. |
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