Preparation of HNTs-d-GO hybrid nanoparticles for gallic acid epoxy composites with improved thermal and mechanical properties,Polymer Composites

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Preparation of HNTs-d-GO hybrid nanoparticles for gallic acid epoxy composites with improved thermal and mechanical properties
Polymer Composites ( IF 4.8 ) Pub Date : 2022-06-16 , DOI: 10.1002/pc.26803
Xiao Lei Zhao ₁ , Gui Xiang Hou ₁ , Shou Wu Yu ₁ , Ming Yuan Wang ₁

Affiliation

KH550 modified halloysite nanotubes (m-HNTs) were hybridized with sulfoxide chloride acylated graphene oxide (m-GO) to prepare hybrid nanoparticles (HNTs-d-GO). The microstructure and morphology analysis of HNTs-d-GO hybrid nanoparticles showed that the ordered lamellar structure of GO after acyl chlorination was stripped, and the organic groups on the surface of the lamellar increased. HNTs-d-GO hybrid nanoparticles were formed through the amidation of m-HNTs and m-GO. Then HNTs-d-GO hybrid nanoparticles were incorporated in galic acid epoxy resin to improve the thermal and mechanical properties. HNTs-d-GO/galic acid epoxy resin (HNTs-d-GO/GAER) bio-based nanocomposites were prepared with methyl tetrahydrophthalic anhydride as curing agent. The galic acid epoxy composites with the addition of HNTs-d-GO exhibited significant enhancements of impact strength, tensile strength, storage modulus, and glass transition temperature. The initial thermal decomposition temperature (T_5%) decreased, and the mass retention at 800°C increased, thermal stability of HNTs-d-GO/GAER composites were enhanced. At an optimum concentration of 0.75 wt% HNTs-d-GO, a simultaneous increase in strength and toughness was observed in comparison to the unfilled cured resin, the impact strength is 2.87 kJ/m², which is 30.4% higher than pure GAER, and the tensile strength is 42.62 MPa, which is 29.2% higher than pure GAER. Compared with pure gallic acid epoxy resin, the content of HNTs-d-GO is 0.25 wt%, T_g increased by 28.9°C.

中文翻译：

HNTs-d-GO杂化纳米粒子的制备用于没食子酸环氧复合材料具有改善的热和机械性能

KH550 改性埃洛石纳米管 (m-HNTs) 与氯化亚砜酰化氧化石墨烯 (m-GO) 杂化以制备杂化纳米粒子 (HNTs-d-GO)。HNTs-d-GO杂化纳米粒子的微观结构和形貌分析表明，经过酰氯处理后GO的有序层状结构被剥离，层状表面的有机基团增加。HNTs-d-GO杂化纳米粒子是通过m-HNTs和m-GO的酰胺化形成的。然后将HNTs-d-GO杂化纳米颗粒掺入没食子酸环氧树脂中以改善热和机械性能。以甲基四氢邻苯二甲酸酐为固化剂制备了HNTs-d-GO/没食子酸环氧树脂（HNTs-d-GO/GAER）生物基纳米复合材料。添加HNTs-d-GO的没食子酸环氧复合材料的冲击强度、拉伸强度、储能模量和玻璃化转变温度显着提高。初始热分解温度（T _5% ) 降低，800°C 下的质量保留增加，HNTs-d-GO/GAER 复合材料的热稳定性增强。在 0.75 wt% HNTs-d-GO 的最佳浓度下，与未填充的固化树脂相比，强度和韧性同时增加，冲击强度为 2.87 kJ/m ²，比纯 GAER 高 30.4%，抗拉强度为42.62 MPa，比纯GAER高29.2%。与纯没食子酸环氧树脂相比，HNTs-d-GO的含量为0.25 wt%，T _g提高了28.9°C。

更新日期：2022-06-16

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