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

编号 020035204

推送时间 20220718

研究领域 林产化工 

年份 2022 

类型 期刊 

语种 英语

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

来源期刊 Polymer Composites

期 第352期

发表时间 20220616

关键词 bio-based nanocomposites;  gallic acid epoxy resin;  graphene oxide;  halloysite nanotubes;  hybrid nanoparticles; 

摘要 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 degrees 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/m(2), 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 degrees C.

服务人员 尚玮姣

服务院士 宋湛谦

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