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| 1 | 高温热氧老化对尼龙66结晶与蠕变性能的影响显示文摘通过熔融挤出制备添加热稳定剂的稳定化尼龙66和未添加热稳定剂的尼龙66。采用差示扫描量热分析、X射线衍射、蠕变试验和显微拉曼等方法研究了高温(180℃)热氧老化不同时间后尼龙66的结晶性能、蠕变性能及外观形貌等,同时探讨了热稳定剂对其影响。结果表明,随着热氧老化时间的延长,尼龙66的熔融峰和结晶峰均向低温偏移,结晶度,α晶型的(100)晶面与(010)/(110)晶面的衍射峰强度之比与尼龙66的蠕变应变均呈下降趋势,稳定剂的存在减缓了上述现象,抑制了尼龙66的降解,提高了尼龙66在高温环境下的使用寿命。 | 刘杰 周金龙 吴盾 董淑强 周开源 刘春林 | 2016 | 高分子材料科学与工程2016，32，1： | 7 |
| 2 | Preparation and Characterization of Multi-layer Poly(arylene sulfide sulfone) Nanofibers Membranes for Liquid Filtration显示文摘Owing to the excellent filtration performance and low energy cost,polymeric nanofibers microfiltration(MF)membranes have attracted increasing attentions.Poly(arylene sulfide sulfone)(PASS),as one of the structurally modified polymers based on poly-(phenylene sulfide)(PPS),has been selected as the raw material to fabricate nanofibers MF membranes via electrospun techniques.The effects of PASS solution and the electrospinning processing parameters on the structural morphology of nanofibers were investigated in detail.The average diameter of PASS nanofibers was(296±46)nm under the optimal condition:polymer concentration of 0.27 g·m L^–1 PASS/DMI,applied voltage of 20 kV,and speed of collector drum of 300 r·min^–1.And then the multi-layer PASS nanofibers MF membranes were fabricated from cold-pressing the optimized PASS nanofibers(as-prepared PASS nanofibers)membrane.The morphology,porosity,pore size,mechanical properties,and surface wettability of the multi-layer PASS nanofibers MF membranes could be tuned by the layers of as-prepared nanofibers membrane.The results demonstrated that the membrane with 6 layers(marked as PASS-6)exhibited the smallest porosity,smallest pore size,highest mechanical property,and best surface wettability.Meanwhile,the multi-layer PASS nanofibers MF membranes showed that the rejection ratio gradually increased,while the pure water flux decreased with increasing membranes thickness.The PASS-6 membrane exhibited large water flux of 747.76 L·m^–2·h^–1 and high separation efficiency of 99.9%to 0.2μm particles,making it a promising candidate for microfilter. | Zhen-Yan Liu Zhi-Mei Wei Xiao-Jun Wang Gang Zhang Sheng-Ru Long Jie Yang | 2019 | Chinese Journal of Polymer Science2019，37，12： | 1 |
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