Novel hybrid nanofillers consist of carbon nanotubes (CNTs) and graphitic carbon nitride (g‐C₃N₄) are prepared for the enhanced mechanical properties of epoxy by improving the dispersion of CNTs. 2D planar structure, large surface area, and plentiful of surface reactive groups of g‐C₃N₄ efficiently resist the microcrack propagation, impede the thermal transfer, and provide chemical bonding with epoxy chains. The well‐dispersed CNTs by anchoring on g‐C₃N₄ surface promotes the efficient transfers of stress, and supply the stronger mechanical interlocking for interfacial bonding. The significantly enhanced mechanical properties of epoxy containing hybrid nanofillers are based on the synergistic effects between CNTs and g‐C₃N₄. Compared with neat epoxy, the tensile strength, tensile modulus, and storage modulus of epoxy containing 0.5 wt% hybrid nanofillers (CNTs: g‐C₃N₄ = 1: 9, w/w) below glass transition temperature (T _g) are increased by 37.65%, 29.36%, and 32.92%, respectively. Meanwhile, the T _g, onset decomposition temperature and char residue are also obviously raised.

中文翻译：

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通过掺入碳纳米管/石墨氮化碳杂化纳米填料显着增强环氧树脂

新型混合纳米填料由碳纳米管（CNT）和石墨氮化碳（g-C ₃ N ₄）组成，可通过改善CNT的分散性来增强环氧的机械性能。二维平面结构，较大的表面积以及g‐C ₃ N _4的大量表面反应性基团可有效抵抗微裂纹的传播，阻碍热传递并提供与环氧链的化学键合。通过固定在g‐C ₃ N ₄上的分散良好的CNT表面促进了应力的有效传递，并为界面结合提供了更强的机械互锁。含环氧的混合纳米填料的机械性能显着提高是基于CNT与g‐C ₃ N ₄之间的协同作用。与纯环氧相比， 在玻璃化转变温度（T _g）以下，含0.5 wt％杂化纳米填料（CNTs：g‐C ₃ N ₄ = 1：9，w / w）的环氧树脂的拉伸强度，拉伸模量和储能模量为分别增长了37.65％，29.36％和32.92％。同时，T _g，起始分解温度和炭渣也明显升高。