翻訳と辞書 Words near each other ・ Thermal conductivities of the elements (data page) ・ Thermal conductivity ・ Thermal conductivity detector ・ Thermal conductivity measurement ・ Thermal contact ・ Thermal contact conductance ・ Thermal cooking ・ Thermal copier ・ Thermal copper pillar bump ・ Thermal Credits ・ Thermal cutoff ・ Thermal cycler ・ Thermal de Broglie wavelength ・ Thermal death time ・ Thermal decomposition ・ Thermal degradation of polymers ・ Thermal depolymerization ・ Thermal design power ・ Thermal desorption ・ Thermal desorption spectroscopy ・ Thermal destratification ・ Thermal diffusion ・ Thermal diffusivity ・ Thermal diode ・ Thermal dissolution ・ Thermal dose unit ・ Thermal effective mass ・ Thermal efficiency ・ Thermal effusivity ・ Thermal ellipsoid Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Thermal degradation of polymers ： ウィキペディア英語版 Thermal degradation of polymers Thermal degradation of polymers is molecular deterioration as a result of overheating. At high temperatures the components of the long chain backbone of the polymer can begin to separate (molecular scission) and react with one another to change the properties of the polymer. Thermal degradation can present an upper limit to the service temperature of plastics as much as the possibility of mechanical property loss. Indeed unless correctly prevented, significant thermal degradation can occur at temperatures much lower than those at which mechanical failure is likely to occur. The chemical reactions involved in thermal degradation lead to physical and optical property changes relative to the initially specified properties. Thermal degradation generally involves changes to the molecular weight (and molecular weight distribution) of the polymer and typical property changes include reduced ductility and embrittlement, chalking, color changes, cracking, general reduction in most other desirable physical properties.〔(Thermal Degradation of Polymers - The Zeus Polymer Minute )〕 ==The mechanism of thermal degradation== Most types of degradation follow a similar basic pattern. The conventional model for thermal degradation is that of an auto-oxidation process which involves the major steps of initiation, propagation, branching, and termination.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Thermal degradation of polymers」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.