Carbon Nanoparticles’ Impact on Processability and Physical Properties of Epoxy Resins—A Comprehensive Study Covering Rheological, Electrical, Thermo-Mechanical, and Fracture Properties (Mode I and II)
Carbon Nanoparticles’ Impact on Processability and Physical Properties of Epoxy Resins—A Comprehensive Study Covering Rheological, Electrical, Thermo-Mechanical, and Fracture Properties (Mode I and II)
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DOI：
10.3390/polym11020231
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发表时间：
2019-02
期刊：
影响因子：
5
通讯作者：
H. Meeuw;J. Körbelin;V. Wisniewski;Ali Shaygan Nia;A. R. Vázquez;Martin R. Lohe;Xinliang Feng;B. Fiedler
中科院分区：
文献类型：
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作者：
H. Meeuw;J. Körbelin;V. Wisniewski;Ali Shaygan Nia;A. R. Vázquez;Martin R. Lohe;Xinliang Feng;B. Fiedler
纳米碳材料在热固性复合材料中的应用总是存在最终部件的物理性能的提高和制造过程中的加工性能之间的权衡。对于不同的环氧树脂，本研究阐述了纳米碳颗粒类型、官能化和填料负载对所得性能的影响，即，流变学、电学、热机械以及在模式I和模式II载荷下的断裂韧性。因此，在各种环氧树脂中引入了由炭黑（CB）、单壁碳纳米管（SWCNT）、多壁碳纳米管（MWCNT）、少层石墨烯（FLG）和电化学膨胀石墨（ExG）组成的一组全面的碳纳米颗粒，其呈纯化或官能化构型，具有不同的分子量分布。一种新的技术，引入尖锐的裂纹到单边缺口弯曲（SENB）断裂韧性标本导致的真实值。单壁碳纳米管表现出最高的潜力，增加电性能，而不增加粘度。官能化的多壁碳纳米管和平面颗粒显着增加的断裂韧性在模式I的两个因素。
A trade-off between enhancement of physical properties of the final part and the processability during manufacturing always exists for the application of nanocarbon materials in thermoset-based composites. For different epoxy resins, this study elaborates the impact of nanocarbon particle type, functionalization, and filler loading on the resulting properties, i.e., rheological, electrical, thermo-mechanical, as well as the fracture toughness in mode I and mode II loading. Therefore, a comprehensive set of carbon nanoparticles, consisting of carbon black (CB), single-walled carbon nanotubes (SWCNT), multi-walled carbon nanotubes (MWCNT), few layer graphene (FLG), and electrochemically expanded graphite (ExG), in purified or functionalized configuration was introduced in various epoxy resins, with different molecular weight distributions. A novel technique to introduce sharp cracks into single-edge notched bending (SENB) fracture toughness specimens led to true values. SWCNT show highest potential for increasing electrical properties without an increase in viscosity. Functionalized MWCNT and planar particles significantly increase the fracture toughness in mode I by a factor of two.