991 resultados para Furnari, Eva, 1948-


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用恒负荷式毛细管流变仪研究了PET/EVA共混物的流变行为,讨论了EVA对PET流变行为的影响;并用SEM观察了挤出条横截面的形态。结果表明,在一定范围内,加入EVA能够提高PET的表观粘度,改善其加工性能;电镜结果表明PET和EVA明显分相;动态力学结果证明PET和EVA不相容。

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The structure of the radiation graft copolymer of acrylic acid onto EVA has been studied by infrared spectroscopy and XPS. It was found that along with the main peak C there is a photoelectron peak at 288.5 eV attributed to [GRAPHICS] group in XPS spectra and the content of its area in XPS increases with increasing of grafting degree of EVA. It was also found that hydrophilicity of EVA increases with the increase of grafting degree.

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用热分析法测定了PET-EVA共混物在不同条件下的结晶与熔融行为.结果表明,加入EVA使PET结晶温度降低,结晶温度区间变窄,结晶度有一定提高,在EVA含量10%附近出现极值.总体上讲,EVA对PET的熔融行为没有影响.

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本文研究了CPE/EVA共混体系的辐射交联规律,证实了该共混体系对文献[4]的适应性,发现在CPE/EVA共混体系中,随辐射剂量的增加,CPE的结晶度和熔点逐渐消失。

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采用DSC、WAXD和力学性能测试,研究了HDPE/EVA共混体系。结果表明,HDPE/EVA共混体系是不相容的,但在共混组成中含有少量(<10%)的EVA,力学性能下降很少,而加工性能得到改善,具有一定实用价值。

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本文通过DSC、WAXD、偏光显微镜、DMA等方法,对LDPE/EVA共混体系进行了研究。结果表明,EVA可使LDPE的熔融峰温提高15℃。并在LDPE结晶过程中起稀释剂作用。LDPE/EVA共混体系为非晶相相容。

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研究了辐照线性低密度聚乙烯/乙烯-醋酸乙烯酯共聚物(LLDPE/EVA)共混体系和线性低密度聚乙烯/三元乙丙橡胶(LLDPE/EPDM)共混体系的溶胶分数(S)与辐照剂量(R)间的关系,发现适用于某些纯聚合物辐射交联规律的Charlesby-Pinner关系式和陈-刘-唐关系式不适用于共混体系。建立了LLDPE/EVA和LLDPE/EPDM共混体系的S与R间的关系:R(S+S~(1/2))=1/q_0u_1+α_0R~(βb)/q_0及β_b=∑PW_iβ_1,用此式计算出的结果与实验结果较吻合。

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本文对添加导电填料的辐射交联LDPE/EVA共混多相体系的某些物理性能进行了研究。考察了导电填料含量和聚合物组份对共混体系的电学和力学性能的影响。同时进行了辐射交联LDPE/EVA导电性多相体系的力学性能温度谱,热分析和X射线衍射分析的研究。

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Vaughn, James, ''Cloak Without Dagger': How the Information Research Department Fought Britain's Cold War in the Middle East, 1948-1956', Cold War History (2004) 4(3) pp.56-84 RAE2008

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Crawford, Alistair, Erich Lessing: Arresting Time. Reportage Photography 1948-1973 (New York: W. W. Norton & Co., 2005) RAE2008

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Wydział Studiów Edukacyjnych: Zakład Edukacji Artystycznej

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http://www.archive.org/details/bolengeastoryofg00dyeeuoft