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Organosilicon surface layer on polyolefins to achieve improved flame retardancy through an oxygen barrier effect
Polymer Degradation and Stability ( IF 6.3 ) Pub Date : 2001 , DOI: 10.1016/s0141-3910(01)00179-3
I. Ravadits , A. Tóth , G. Marosi , A. Márton , A. Szép
Polymer Degradation and Stability ( IF 6.3 ) Pub Date : 2001 , DOI: 10.1016/s0141-3910(01)00179-3
I. Ravadits , A. Tóth , G. Marosi , A. Márton , A. Szép
A model system consisting of a polyethylene substrate surface treated by vinyltriethoxysilane and by organoboroxo-siloxane (OBSi), and an OBSi-containing intumescent flame-retarded compound (IFR-OBSi) based on polypropylene, ammonium polyphosphate and pentaerythritol were prepared and investigated. After a radio-frequency plasma treatment of the model system its oxygen permeability decreased by about one order of magnitude. According to XPS studies, enrichment of Si took place on the surface of the untreated IFR-OBSi, while after its ignition in a cone calorimeter surface enrichments of N and P were also detected. According to the evolution of the Si 2p peaks, creation of glass-like surface coatings took place on both the model system upon its RF plasma treatment and on IFR-OBSi upon its flame treatment. A small portion of OBSi remained unreacted in the surface layer of the flame-treated IFR-OBSi, which may ensure the plasticity necessary to prevent it from cracking and to ensure improved flame retardancy.
中文翻译:
聚烯烃上的有机硅表面层可通过阻氧作用提高阻燃性
制备并研究了由聚乙烯三乙氧基硅烷和有机硼氧硅氧烷(OBSi)处理过的聚乙烯基质表面,以及基于聚丙烯,聚磷酸铵和季戊四醇的含OBSi的膨胀型阻燃化合物(IFR-OBSi)组成的模型系统。在对模型系统进行射频等离子体处理之后,其氧气渗透率降低了大约一个数量级。根据XPS研究,未处理的IFR-OBSi的表面发生了Si富集,而在锥形量热仪中点燃后,还检测到N和P的表面富集。根据Si 2p峰的演变,在RF等离子体处理后的模型系统上以及在火焰处理后在IFR-OBSi上都在模型系统上创建了玻璃状表面涂层。
更新日期:2017-01-31
中文翻译:
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聚烯烃上的有机硅表面层可通过阻氧作用提高阻燃性
制备并研究了由聚乙烯三乙氧基硅烷和有机硼氧硅氧烷(OBSi)处理过的聚乙烯基质表面,以及基于聚丙烯,聚磷酸铵和季戊四醇的含OBSi的膨胀型阻燃化合物(IFR-OBSi)组成的模型系统。在对模型系统进行射频等离子体处理之后,其氧气渗透率降低了大约一个数量级。根据XPS研究,未处理的IFR-OBSi的表面发生了Si富集,而在锥形量热仪中点燃后,还检测到N和P的表面富集。根据Si 2p峰的演变,在RF等离子体处理后的模型系统上以及在火焰处理后在IFR-OBSi上都在模型系统上创建了玻璃状表面涂层。