The preparation of polyamide 6/ZnO nanocomposite via in situ method and the investigation of their properties

【作者】 徐启杰； Hui Yin； Ning Zhang； Qingcai Pan； Mengxi Zhao； Zhun Liu； Shuang Zhang；

【Author】 Qijie Xu;Hui Yin;Ning Zhang;Qingcai Pan;Mengxi Zhao;Zhun Liu;Shuang Zhang;The department of chemistry and chemical engineering, Huanghuai University;

【机构】 The department of chemistry and chemical engineering, Huanghuai University；

【摘要】 The polyamide 6/ZnO nanocomposite was prepared readily by in situ polymerization, with which Zn₂（OH）₂CO₃ was used as filler. This method was beneficial to reduce the calcining process of Zn₂（OH）₂CO₃ to receive ZnO and the production cost of the preparation of polymer-nanoparticle composites. As-prepared composite was characterized by using X-ray diffractometer（XRD）,thermogravimetric analyzer（TGA）, differential thermal scanning calorimeter（DSC）, and polarizing microscope（POM） to test the crystallization properties and thermal stability. The mechanical properties and friction performance of composite were evaluated via using high-speed ring friction testing machine, universal tensile testing machine, impact testing machine. As-obtained results showed that nano-ZnO was derived from Zn₂（OH）₂CO₃ in the process of in situ polymerization of PA6/ZnO nanocomposite. Moreover, nano-ZnO with heterogeneous nucleation effect in the composite led to the improvement of the crystallinity of polyamide 6. Additionally, due to the hindering effect of nano-ZnO on the movement of PA6 molecular chains, that reduced crystallization rate and crystal size of PA6 matrix. The results indicated that the mechanical properties and tribological properties of PA6/ZnO nanocomposites had the improvement than pure polyamide 6.更多还原

【Abstract】 The polyamide 6/ZnO nanocomposite was prepared readily by in situ polymerization, with which Zn₂（OH）₂CO₃ was used as filler. This method was beneficial to reduce the calcining process of Zn₂（OH）₂CO₃ to receive ZnO and the production cost of the preparation of polymer-nanoparticle composites. As-prepared composite was characterized by using X-ray diffractometer（XRD）,thermogravimetric analyzer（TGA）, differential thermal scanning calorimeter（DSC）, and polarizing microscope（POM） to test the crystallization properties and thermal stability. The mechanical properties and friction performance of composite were evaluated via using high-speed ring friction testing machine, universal tensile testing machine, impact testing machine. As-obtained results showed that nano-ZnO was derived from Zn₂（OH）₂CO₃ in the process of in situ polymerization of PA6/ZnO nanocomposite. Moreover, nano-ZnO with heterogeneous nucleation effect in the composite led to the improvement of the crystallinity of polyamide 6. Additionally, due to the hindering effect of nano-ZnO on the movement of PA6 molecular chains, that reduced crystallization rate and crystal size of PA6 matrix. The results indicated that the mechanical properties and tribological properties of PA6/ZnO nanocomposites had the improvement than pure polyamide 6.更多还原