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通过物理改性提高杂化纳米复合材料的动态压缩和电热性能

Improved Dynamic Compressive and Electro-Thermal Properties of Hybrid Nanocomposite Visa Physical Modification.

作者信息

Zhang Kai, Tang Xiaojun, Guo Fuzheng, Xiao Kangli, Zheng Dexin, Ma Yunsheng, Zhao Qingsong, Wang Fangxin, Yang Bin

机构信息

School of Civil Engineering and Architecture, Suqian University, Suqian 223800, China.

Beijing Spacecrafts, China Academy of Space Technology, Beijing 100094, China.

出版信息

Nanomaterials (Basel). 2022 Dec 22;13(1):52. doi: 10.3390/nano13010052.

DOI:10.3390/nano13010052
PMID:36615962
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9824552/
Abstract

The current work studied the physical modification effects of non-covalent surfactant on the carbon-particle-filled nanocomposite. The selected surfactant named Triton™ X-100 was able to introduce the steric repelling force between the epoxy matrix and carbon fillers with the help of beneficial functional groups, improving their dispersibility and while maintaining the intrinsic conductivity of carbon particles. Subsequent results further demonstrated that the physically modified carbon nanotubes, together with graphene nanoplates, constructed an effective particulate network within the epoxy matrix, which simultaneously provided mechanical reinforcement and conductive improvement to the hybrid nanocomposite system. For example, the hybrid nanocomposite showed maximum enhancements of ~75.1% and ~82.5% for the quasi-static mode-I critical-stress-intensity factor and dynamic compressive strength, respectively, as compared to the neat epoxy counterpart. Additionally, the fine dispersion of modified fillers as a double-edged sword adversely influenced the electrical conductivity of the hybrid nanocomposite because of the decreased contact probability among particles. Even so, by adjusting the modified filler ratio, the conductivity of the hybrid nanocomposite went up to the maximum level of ~10-10 S/cm, endowing itself with excellent electro-thermal behavior.

摘要

当前的研究工作考察了非共价表面活性剂对碳颗粒填充纳米复合材料的物理改性效果。所选用的名为Triton™ X-100的表面活性剂能够借助有益的官能团在环氧基体与碳填料之间引入空间排斥力，提高它们的分散性，同时保持碳颗粒的本征导电性。后续结果进一步表明，物理改性的碳纳米管与石墨烯纳米片在环氧基体内构建了有效的颗粒网络，这同时为杂化纳米复合材料体系提供了机械增强和导电性提升。例如，与纯环氧材料相比，该杂化纳米复合材料在准静态I型临界应力强度因子和动态抗压强度方面分别显示出高达约75.1%和约82.5%的最大增强。此外，改性填料的良好分散作为一把双刃剑，由于颗粒间接触概率降低，对杂化纳米复合材料的电导率产生了不利影响。即便如此，通过调整改性填料比例，杂化纳米复合材料的电导率提升至约10-10 S/cm的最高水平，使其具有优异的电热性能。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c87/9824552/e33629a86606/nanomaterials-13-00052-g015.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c87/9824552/ea457d80f6dc/nanomaterials-13-00052-g006.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c87/9824552/ddc83851b8ca/nanomaterials-13-00052-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c87/9824552/204920b52380/nanomaterials-13-00052-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c87/9824552/7057057db6da/nanomaterials-13-00052-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c87/9824552/325109e78bab/nanomaterials-13-00052-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c87/9824552/d204a1ffd038/nanomaterials-13-00052-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c87/9824552/0b6ef3df1146/nanomaterials-13-00052-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c87/9824552/20c2b271ff8a/nanomaterials-13-00052-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c87/9824552/e33629a86606/nanomaterials-13-00052-g015.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c87/9824552/11c6f740a3f7/nanomaterials-13-00052-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c87/9824552/ab1f3ef888e9/nanomaterials-13-00052-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c87/9824552/154876d2afdc/nanomaterials-13-00052-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c87/9824552/9c4e63a0c99e/nanomaterials-13-00052-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c87/9824552/0164e616e89c/nanomaterials-13-00052-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c87/9824552/ea457d80f6dc/nanomaterials-13-00052-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c87/9824552/1f2022a824cc/nanomaterials-13-00052-g007a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c87/9824552/ddc83851b8ca/nanomaterials-13-00052-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c87/9824552/204920b52380/nanomaterials-13-00052-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c87/9824552/7057057db6da/nanomaterials-13-00052-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c87/9824552/325109e78bab/nanomaterials-13-00052-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c87/9824552/d204a1ffd038/nanomaterials-13-00052-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c87/9824552/0b6ef3df1146/nanomaterials-13-00052-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c87/9824552/20c2b271ff8a/nanomaterials-13-00052-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c87/9824552/e33629a86606/nanomaterials-13-00052-g015.jpg

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