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使用纤维素纤维增强的基于素的聚氨泡,通过使用纤维素纤维来提高隔热性能

Chuanyuan Yang¹, Guoyu Tian¹, Changjian Wang²

¹State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences) Jinan 250353 China 19854198710@163.com wzj@qlu.edu.cn.

|January 16, 2026

概括

将纤维素纤维添加到以素为基础的聚氨泡中,可以提高机械强度和隔热. 用0.5%的纤维素实现了最佳性能,证明了有效地利用生物质来制造可持续材料.

科学领域:

材料科学材料科学材料科学
聚合物化学聚合物化学
生物质利用生物质的利用

背景情况:

聚氨是一种具有广泛应用的多功能材料.
生物质的利用,特别是素和纤维素,对于可持续发展至关重要.
从天然聚合物开发功能性材料,为合成材料提供了一个环保的替代方案.

研究的目的:

为了合成基于木质素的聚氨泡 (LPUF),使用Kraft木质素.
研究将纤维素纤维作为强化骨架在LPUF的机械和热性能上的影响.
为了确定纤维素纤维的最佳负载,以提高材料性能.

主要方法:

含有红素的聚 (LP) 是从 Kraft 红素,聚乙烯甘醇和甘油中制备的.
通过将LP与聚甲二二酸 (PMDI) 反应,使用水作为发泡剂来合成LPUF.
在各种负载下 (0-1.0%) 加入纤维素纤维来加强LPUF结构.

主要成果:

添加0.5%的纤维素纤维显著改善了压力强度 (72.3%),屈曲强度 (154.5%) 和拉伸强度 (244.1%).
最佳的纤维素负荷 (0.5%) 提高了机械性能,达到647.6kPa (压力),1.28MPa (柔性) 和1.17MPa (拉力).
导热率从0.0413降至0.0378 W m-1 K-1 在0.5%的纤维素下降,表明热绝缘性得到改善. 较高的负载 (>0.5%) 对毛孔形态和机械性能产生了负面影响.

结论:

纤维素纤维增强,特别是在0.5%的负载下,显著提高了基于木质素的聚氨泡的机械和热绝缘性能.
这项研究强调了利用木材天然聚合物 (木质素和纤维素) 来制造高性能,可持续的聚氨材料的潜力.
这种方法有助于增值的生物质利用,促进可持续发展和碳中和目标.

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