总结了近年来国内外关于无卤阻燃剂阻燃乙烯-醋酸乙烯酯共聚物(EVA)的研究进展。通过氧指数、垂直燃烧等级、锥形量热仪热参数等性能指标,对不同无卤阻燃剂(主要是氢氧化铝、氢氧化镁、天然氢氧化物和膨胀阻燃剂)和协同阻燃剂(主要是红...总结了近年来国内外关于无卤阻燃剂阻燃乙烯-醋酸乙烯酯共聚物(EVA)的研究进展。通过氧指数、垂直燃烧等级、锥形量热仪热参数等性能指标,对不同无卤阻燃剂(主要是氢氧化铝、氢氧化镁、天然氢氧化物和膨胀阻燃剂)和协同阻燃剂(主要是红磷、硼酸锌、硅化合物等)阻燃 EVA 的方法和效果进行了综述和比较。对无卤阻燃材料所采用的阻燃剂的种类、特点和阻燃机理进行了详细介绍。最后对 EVA 无卤阻燃材料的发展前景进行了展望。展开更多
Poly（ethylene glycol） monoacrylate （PEGMA） is grafted onto polycarbonateurethane （PCU） surface via ultraviolet initiated photopolymerization. The hydroxyl groups of poly（PEGMA） on the surface react with one NC...Poly（ethylene glycol） monoacrylate （PEGMA） is grafted onto polycarbonateurethane （PCU） surface via ultraviolet initiated photopolymerization. The hydroxyl groups of poly（PEGMA） on the surface react with one NCO group of isophorone diisocyanate （IPD1） and another NCO group of IPDI is then hydrolyzed to form amino terminal group, which is further grafted with phosphorylcholine glyceraldehyde to establish a biocompatible hydrophilic structure on the surface. Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy confirm the successful grafting of both PEG and phosphorylcholine functional groups on the surface. The decrease of the water contact angle for the modified film is caused by synergic effect of PEG and phosphorylcholine, which both have the high hydrophilicity. Furthermore, the number of platelets adhered is relative low on the synergetically modified PCU film compared with the PCU film modified only by poly（PEGMA）. Our synergic modification method using both PEG and phosphorylcho- line may be applied in surface modification of bloodcontacting biomaterials and some relevant devices.展开更多
文摘总结了近年来国内外关于无卤阻燃剂阻燃乙烯-醋酸乙烯酯共聚物(EVA)的研究进展。通过氧指数、垂直燃烧等级、锥形量热仪热参数等性能指标,对不同无卤阻燃剂(主要是氢氧化铝、氢氧化镁、天然氢氧化物和膨胀阻燃剂)和协同阻燃剂(主要是红磷、硼酸锌、硅化合物等)阻燃 EVA 的方法和效果进行了综述和比较。对无卤阻燃材料所采用的阻燃剂的种类、特点和阻燃机理进行了详细介绍。最后对 EVA 无卤阻燃材料的发展前景进行了展望。
基金Acknowledgements This work has been financially supported by Ministry of Science and Technology of China （Grants No. 2013DFG52040 and 2008DFA51170）, National Natural Science Foundation of China （Grant No. 31370969）, and Ph.D. PrograFns Foundation of Ministry of Education of China （No. 20120032110073）.
文摘Poly（ethylene glycol） monoacrylate （PEGMA） is grafted onto polycarbonateurethane （PCU） surface via ultraviolet initiated photopolymerization. The hydroxyl groups of poly（PEGMA） on the surface react with one NCO group of isophorone diisocyanate （IPD1） and another NCO group of IPDI is then hydrolyzed to form amino terminal group, which is further grafted with phosphorylcholine glyceraldehyde to establish a biocompatible hydrophilic structure on the surface. Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy confirm the successful grafting of both PEG and phosphorylcholine functional groups on the surface. The decrease of the water contact angle for the modified film is caused by synergic effect of PEG and phosphorylcholine, which both have the high hydrophilicity. Furthermore, the number of platelets adhered is relative low on the synergetically modified PCU film compared with the PCU film modified only by poly（PEGMA）. Our synergic modification method using both PEG and phosphorylcho- line may be applied in surface modification of bloodcontacting biomaterials and some relevant devices.
