以氧化石墨烯为改性剂,氢化二聚酸、1,6-己二胺、聚醚胺D-230、己内酰胺为原料,通过原位聚合法合成氧化石墨烯增强氢化二聚酸共聚尼龙。力学性能测试结果表明:在共聚尼龙基体中,氧化石墨烯的质量分数为0.08%时,增强尼龙的拉伸强度为51.3MPa,断裂伸长率为457.3%,弯曲强度为36.3MPa,缺口冲击吸收功为84kJ/m²。热重分析和差示扫描量热分析结果显示:尼龙的分解温度和最后的残炭量也得到了提高。从扫描电镜对改性尼龙断面的观察可以看出,氧化石墨烯均匀分散在共聚尼龙本体中。与未添加氧化石墨烯的尼龙相比,氧化石墨烯对尼龙的增强作用明显。

Using hydrogenated dimer acid,1,6-hexamethylenediamine,polyether amine D-230 and caprolactam as raw materials,the graphene oxide-enriched hydrogenated dimer acid-based nylon compolymer was synthesized by in situ polymerization.The results showed that the tensile strength was 51.3MPa,the elongation at break was 457.3%,the flexural strength was 36.3MPa and the absorption energy of notched impact strength was 84kJ/m²,when the content of graphene oxide in the nylon matrix was 0.08%.Thermogravimetric analysis and differential thermal analysis showed that the decomposition temperature of nylon and the final residual carbon content were also improved.From the observation of modified nylon by scanning electron microscopy,it can be seen that the graphene oxide was uniformly dispersed in the nylon.The enhanced effecst of oxidized graphene were obvious and the properties of prepared copolymerized nylon were more than those of common nylon.