聚酰胺6/聚乙二醇/ZnO复合材料的制备与性能

Preparation and Properties of Polyamide 6/ Polyethylene Glycol /ZnO Composites

以己内酰胺、聚乙二醇1000(PEG1000)、ZnO为原料,6-氨基己酸为开环剂,钛酸四丁酯为催化剂制备了PA6/PEG/ZnO复合材料,采用傅里叶变换红外光谱和X射线衍射对复合材料的分子结构进行了表征,并对复合材料的力学性能和流变可纺性进行了研究。结果表明,添加ZnO使复合材料的晶粒由α相转化为小尺寸的γ相;材料的热分解温度没有显著变化,均高于聚酰胺6 (PA6)的加工温度;通过对复合材料的流变测试得知该复合材料属于切力变稀流体,具有可纺性;当ZnO含量为10%时,断裂强度提高了55.7%,复合材料的力学性能显著提高。PA6/PEG/ZnO复合材料具有一定的工业应用价值。

Polyamide 6(PA6) was prepared with caprolactam (CPL). Polyethylene glycol (PEG) and zinc oxide (ZnO) were mixed to PA6 main chains, formed PA6/PEG/ZnO composites, using 6- amino acetic acid as ring opening agent, four butyl titanate as catalyst. The chemical structures of PA6/PEG/ZnO composites were characterized by Fourier transform infrared spectroscopy (FT-IR) and wide angle X-ray diffraction (XRD). The mechanical properties and the rheological behavior of the composites were also researched. The results show that part crystalline grains of the composites were transformed from α phase to γ phase after ZnO added. The thermal decomposition temperature of the materials does not change too much, which is higher than the processing temperature of PA6. The rheological test confirms that the composites are shear thinning fluid, and the non-Newton index of the composites is less than 1, the ability of spinning is good. When the content of ZnO added is 10%, the fracture strength is increased by 55.7%, and the mechanical properties of the composites are greatly improved. Therefore, PA6/PEG/ZnO nanocomposites have potentially industrial application.