纤维素纳米纤维增强环氧树脂复合材料的热性能和动态力学性能
Thermal and dynamic mechanical properties of cellulose nanofibers reinforced epoxy composites.
作者信息
Saba N, Safwan Ahmad, Sanyang M L, Mohammad F, Pervaiz M, Jawaid M, Alothman O Y, Sain M
机构信息
Laboratory of Biocomposite Technology, Institute of Tropical Forestry and Forest Products, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
Surfactant Research Chair, Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
出版信息
Int J Biol Macromol. 2017 Sep;102:822-828. doi: 10.1016/j.ijbiomac.2017.04.074. Epub 2017 Apr 25.
The current study presents about the effect of cellulose nanofibers (CNFs) filler on the thermal and dynamic mechanical analysis (DMA) of epoxy composites as a function of temperature. In this study hand lay-up method was used to fabricate CNF reinforced Epoxy nanocomposites with CNF loading of 0.5%, 0.75%, and 1% into epoxy resin. The obtained thermal and DMA results illustrates that thermal stability, char content, storage modulus (E'), loss modulus (E") and glass transition temperature (Tg) increases for all CNF/epoxy nanocomposites compared to the pure epoxy. Thermal results revealed that 0.75% offers superior resistance or stability towards heat compared to its counterparts. In addition, 0.75% CNF/epoxy nanocomposites confers highest value of storage modulus as compared to 0.5% and 1% filler loading. Hence, it is concluded that 0.75% CNFs loading is the minimal to enhance both thermal and dynamic mechanical properties of the epoxy composites and can be utilized for advance material applications where thermal stability along with renewability are prime requirements.
本研究介绍了纤维素纳米纤维（CNFs）填料对环氧复合材料热性能和动态力学分析（DMA）随温度变化的影响。在本研究中，采用手工铺层法制备了CNF含量分别为0.5%、0.75%和1%的CNF增强环氧纳米复合材料。所获得的热性能和DMA结果表明，与纯环氧树脂相比，所有CNF/环氧纳米复合材料的热稳定性、炭含量、储能模量（E'）、损耗模量（E"）和玻璃化转变温度（Tg）均有所提高。热性能结果表明，0.75%的CNF/环氧纳米复合材料比其他复合材料具有更高的耐热性或热稳定性。此外，与0.5%和1%填料含量的复合材料相比，0.75%的CNF/环氧纳米复合材料具有最高的储能模量。因此，可以得出结论，0.75%的CNF含量是提高环氧复合材料热性能和动态力学性能的最低用量，可用于对热稳定性和可再生性有主要要求的先进材料应用中。
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