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以4,4'-二环己基甲烷二异氰酸酯(HMDI)为偶联剂,制备了端羟基丁腈橡胶(HTBN)功能化的氧化石墨烯,并对功能化产物进行了结构和力学性能表征。研究结果表明:成功制备了功能化产物;将5份HTBN与0.25份的氧化石墨烯进行功能化反应并用于环氧胶粘剂增韧时,改性体系的韧性得到明显改善。断裂伸长率和冲击强度较未改性环氧胶粘剂分别提高了36.0%和128.8%,常温剪切强度提高了71.3%,剥离强度提高了120.0%,但玻璃化转变温度有所降低。
Abstract：The hydroxyl-terminated nitrile rubber(HTBN)functionalized graphene oxide was prepared with dicyclohexylmethane-4,4'-diisocyanate (HMDI) as coupling agent,and the structure and mechanical properties of the functionalized products were characterized. The research results showed that the functionalized products were successfully prepared. When 5 phr HTBN and 0.25 phr graphene oxide were functionalized and used to toughen epoxy adhesive,the toughness of the modified system was significantly improved. Compared with the unmodified epoxy adhesive,the elongation at break and impact strength increased by 36.0% and 128.8%,respectively. The shear strength at room temperature increased by 71.3%,the peel strength increased by 120.0%,but the glass transition temperature decreased to some extents.
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基本信息:
DOI：10.13416/j.ca.2020.03.002
中图分类号:TQ433.42
引用信息:
[1]薛刚,邢继烨,张斌等.端羟基丁腈橡胶功能化氧化石墨烯增韧环氧胶粘剂性能研究[J].中国胶粘剂,2020,29(03):1-4+10.DOI:10.13416/j.ca.2020.03.002.
基金信息:
黑龙江省杰出青年基金(JC2018015); 黑龙江省院所基本应用技术研究专项(ZNBZ2019SH03)