CAJ | 학술논문

将纯碳纳米管通过浓酸氧化改性,然后通过溶液共混法制备改性碳纳米管/尼龙12复合材料的粉末.红外光谱分析表明,经过酸氧化处理,碳纳米管表面接上了羧基和羟基等极性官能团;光学图像表明改性后的碳纳米管与有机溶剂的相容性和分散性得到较好地改善;热重分析可知碳纳米管的加入提高了材料的热稳定性;力学性能测试显示碳纳米管与尼龙12通过溶液共混法制得的样品抗拉强度比熔融共混法制备的样品提高了3%.
장순탄납미관통과농산양화개성,연후통과용액공혼법제비개성탄납미관/니룡12복합재료적분말.홍외광보분석표명,경과산양화처리,탄납미관표면접상료최기화간기등겁성관능단;광학도상표명개성후적탄납미관여유궤용제적상용성화분산성득도교호지개선;열중분석가지탄납미관적가입제고료재료적열은정성;역학성능측시현시탄납미관여니룡12통과용액공혼법제득적양품항랍강도비용융공혼법제비적양품제고료3%.
The modified carbon nanotubes（CNTs）/nylon 12 composites was prepared by solution blending after the pure carbon nanotubes were oxidized by the concentrated nitric acid.Infrared spectrum of the CNTs after acid oxidation showed that polar functional groups were attached to the surface of CNTs.Optical images showed that compatibility and dispersion of the modified CNTs in organic solvent have been improved.TGA indicated the thermal stability of nylon 12 was improved by adding CNTs.Tensile test showed that the tensile strength of CNTs/nylon 12 by solution blending was 3 % stronger than that of the samples prepared by melt blending.