一项旨在制造具有卓越机械和热电性能的热塑性复合材料的战略
Yichuan Zhang1, Zhipeng Li2, Qianhui Long1
1School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Soft-Matter Materials Manufacturing, Southwest University, Chongqing 400715, China.
Journal of colloid and interface science
|July 1, 2024
概括
离子液调节聚合物复合材料实现了增强的热电和机械性能. 这一突破解决了权衡的挑战,为先进的应用铺平了道路.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 纳米技术 纳米技术
背景情况:
- 机械性能对于聚合物复合材料的实际热电 (TE) 应用至关重要,但它经常被忽视.
- 在开发TE聚合物复合材料方面,一个重大挑战是机械 (ME) 和TE性能之间的反向关系.
研究的目的:
- 为了在聚合物复合材料中实现 TE 和 ME 性能之间的更好的权衡.
- 为了研究离子液 (IL) 调节的聚3,4-乙烯二氧化硫的潜力:聚硫酸 (PEDOT:PSS) /单壁碳纳米管 (SWCNT) /聚碳酸 (PC) 复合材料.
主要方法:
- 用离子液调节的柔性PSS/SWCNT/PC复合材料的制造.
- 热电 (功率因子) 和机械 (断裂强度,拉伸模量) 属性的表征.
- 分析材料组成,界面相互作用和整体性能之间的关系.
主要成果:
- 开发的复合材料达到8.5 ± 2.1μW的最大功率系数m−1 K−2.2.
- 观察到异常的机械强度,断裂强度为43.4 ± 5.4 MPa,拉伸模量为3.8 ± 0.4 GPa.
- 实现的TE和ME性能超过了其他基于热塑的TE复合材料的性能,并与一些导电聚合物竞争.
结论:
- 该研究成功地证明了在IL调节的聚合物复合材料中TE和ME性能之间的更强的权衡.
- PEDOT:PSS/SWCNT的高电导率和与PC的强烈接口相互作用是提高性能的关键因素.
- 这项研究提供了一种创新的方法,用于创建具有同时高 TE 和 ME 性能的聚合物复合材料,促进它们在各种应用中的使用.
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