英语翻译3.Results anddiscussion3.1.Kineticsof PU,XPS and EPS degradationThe TG and DTGresults of PU,XPS and EPS under various heating rates (5,10,15,20 ◦C/min)in a nitrogen environment are presented in Figs.1–3,respectively.There are many
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英语翻译3.Results anddiscussion3.1.Kineticsof PU,XPS and EPS degradationThe TG and DTGresults of PU,XPS and EPS under various heating rates (5,10,15,20 ◦C/min)in a nitrogen environment are presented in Figs.1–3,respectively.There are many
英语翻译
3.Results anddiscussion
3.1.Kineticsof PU,XPS and EPS degradation
The TG and DTGresults of PU,XPS and EPS under various heating rates (5,10,15,20 ◦C/min)in a nitrogen environment are presented in Figs.1–3,respectively.
There are manymethods for calculating non-isothermal kinetic parameters.The choice ofkinetic analysis method should take into account the amount of noise inexperimental data.Integral methods are best suitable for analyzing integraldata.Whereas,differentiating integral data tends to magnify data noise andsmoothing may introduce a systematic error (shift) in the smoothed data thatwould ultimately convert into a systematic error in kinetic parameters.Kissinger–Akahira–Sunose(KAS)method and Ozawa–Flynn–Wall (OFW) method are both integral isoconversionalmethods,commonly used to evaluate the activation energy E in polymers thermalanalysis .Compared to the OFW method,KAS method improves significantly in theaccuracy of E .That is the reason why KAS method is used in this study.
英语翻译3.Results anddiscussion3.1.Kineticsof PU,XPS and EPS degradationThe TG and DTGresults of PU,XPS and EPS under various heating rates (5,10,15,20 ◦C/min)in a nitrogen environment are presented in Figs.1–3,respectively.There are many
3.结果和讨论
3.1.PU、 XPS 和 EPS 降解动力学
PU、 XPS 和 EPS 在不同升温速率下 (5、 10、 15、 20 ◦C/min) 在氮环境中,TG 和动调陀螺仪的结果请分别见图 1-3.
有许多方法可用于非等温动力学参数计算.动力学分析方法的选择应考虑到所用的实验数据中的干扰因素.积分方法最适合于数据的整体分析.而微积分数据会导致放大数据噪声和平滑度可能会引入一个系统错误在平滑数据中,其最终转换为动力学参数中的一个系统错误Kissinger–Akahira–Sunose(KAS) 和 Ozawa–Flynn–Wall (OFW) 方法均为积分等转化率法,通常在聚合物热分析中用于活化能的评价.与OFW法相比,KAS法极大地提高了活化能计算的准确性,这是KAS 法被用于这项研究中的原因所在.