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2篇 您的检索式:作者名="R.A.Williams"
    题名 作者 年代 出处 被引量
1MORPHOLOGY EVOLUTION IN PTFE AS A FUNCTION OF MELT TIME AND TEMPERATURE——Ⅰ.HIGH MOLECULAR WEIGHT SINGLE-AND MULTI-MOLECULE FOLDED CHAIN SINGLE CRYSTALS AND BAND STRUCTURES显示文摘The effect of sintering dispersed dispersion and nano-emulsion particles of high molecular weight polytetrafluoroethylene (PTFE) on a substrate as a function of 'melt' time and temperature is described. Folded chain single crystals parallel to the substrate and as ribbons on-edge (with double striations), as well as bands, are produced for longer sintering times; particle merger and diffusion of individual molecules, crystallizing as folded chain, single (or few) molecule,single crystals when 'trapped' on the substrate by cooling occur for shorter sintering times. It is suggested the observed structures develop with sintering time, in a mesomorphic melt. The structure of the nascent particles is also discussed.J.Yang K.L.Petersen R.A.Williams P.H.Geil T.C.Long P.Xu 2005Chinese Journal of Polymer Science2005,23,2:2
2Xe_2Br准分子研究显示文摘本文报导了Ar、Xe和不同溴化物施主构成的各种混合气体在电子束泵浦之下,三原子准分子Xe_2Br的荧光(中心渡长440nm)发射特性研究结果,讨论了它的生成和离(?)动力学过程以及这种分子用作激光系统的可能性。郭振华 W.L.Wilson F.K.Tittel R.A.Williams 1984激光杂志1984,5,3:0
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