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首页> 外文期刊>Polymer Composites >Kinetic and reactivity distribution behaviors during curing process of carbon/epoxy composite with thermoplastic interface coatings (T800/3900-2 prepreg) under the nonisothermal conditions
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Kinetic and reactivity distribution behaviors during curing process of carbon/epoxy composite with thermoplastic interface coatings (T800/3900-2 prepreg) under the nonisothermal conditions

机译：热塑性界面涂层（T800 / 3900-2 Prepregge）在非等热条件下固化过程中的动力学和反应性分布行为

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In this work, the thermal stability, the non-isothermal cure kinetics and distributed reactivity model (DRM) for fiber reinforced resin matrix composite (T800H/3900-2 prepreg) have been systematically analyzed using combined phenomenological and partially fundamental approaches. It has been shown that the proposed actual kinetic model (expressed through the three-parameter Sestak-Berggren (SB) model including the diffusion effects) more accurately describes the curing process than the idealized kinetic model (which includes only the autocatalytic reaction). Presence of diffusion phenomena that occur at elevated temperatures and higher values of the extent of cures were demonstrated and explained in detail, through the use of modified Williams-Landel-Ferry (WLF) equation (based on the glass transition analysis) and the Avrami crystallization theory. The DRM was demonstrated that in autocatalytic stage, the reaction of primary amine with two epoxy groups plays an important role in the overall curing process. It has been shown that condensed phase effects can lower the apparent activation energy (E-a) value of the curing process. The lifetime analysis showed that the studied T800H/3900-2 prepreg possesses good thermal resistance, which is connected with the process including a ring-opening addition-type crosslinking reaction.POLYM. COMPOS., 39:201-220, 2018. (c) 2016 Society of Plastics Engineers
机译：在这项工作中，使用组合的现象学和部分基本方法系统地分析了纤维增强树脂基质复合材料（T800H / 3900-2预浸料坯的热稳定性，非等温固化动力学和分布式反应性模型（DRM）。已经表明，所提出的实际动力学模型（通过包括扩散效果的三参数Sestak-Berggren（SB）模型表示）更准确地描述了比理想化的动力学模型（仅包括自催化反应）的固化过程。通过使用改性的Williams-Landel-Ferry（WLF）等式（基于玻璃化转换分析）和Avrami结晶，详细展示和解释了在升高的温度下发生的扩散现象和较高的固化程度的值。理论。 DRM被证明，在自催化阶段，伯胺与两种环氧基团的反应在整体固化过程中起重要作用。已经表明，冷凝的相位效应可以降低固化过程的表观激活能量（E-A）值。寿命分析表明，研究的T800H / 3900-2预浸料具有良好的热阻，其与包括开环添加型交联反应的过程连接。Polymy。 Compos。，39：201-220,2018。（c）2016年塑料工程师协会

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