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固化动力学研究及其计算机处理系统的实现

Study on Curing Kinetic and Its Computer Dealing System

【作者】 沈时骏

【导师】 徐卫兵;

【作者基本信息】 合肥工业大学 , 材料学, 2004, 硕士

【摘要】 论文首先介绍了固化动力学研究的历史和意义,对目前较重要的若干种固化动力学处理方法进行逐一的分析和介绍,并对各种处理方法的应用前提,假设条件和固化模型做了明确的说明。 作者首先使用VBA宿主语言编制了一个简单的固化动力学处理软件模型。这个软件可以方便的实现对固化动力学的Kissinger处理方法,但是由于语言的先天不足,它无法扩展成为功能全面,具有良好的移植性和扩充性的固化动力学集成处理系统。 论文的重点是介绍作者使用VB编写的固化动力学集成处理系统软件。这个软件源代码有万余行,它使用了一些新颖的算法和处理方法,基本实现了软件预期的目标;并具有体系结构清楚,用户界面友好的特点。软件目前提供给用户六种各具特色的动力学处理方法,包括Kissinger方法,Ozawa方法,Freeman-Carroll方法,Zavkovik方法,最佳固化工艺外推的方法和Satava-Sestak方法。用户可以根据需要自由的选择所需的几种方法对任一个具体的固化体系进行分析,此外,软件内部还提供了一些方便用户处理数据的工具,如制图工具和分段拟合工具等。 作者用固化动力学集成处理软件对环氧/桐油酸酐/有机蒙脱土固化体系和环氧/二乙烯三胺/有机蒙脱土固化体系进行分析。加入有机蒙脱土后,两个固化体系的起始固化温度和终止固化温度均明显向中间靠拢,而峰顶固化温度基本维持不变。对于环氧/桐油酸酐/有机蒙脱土固化体系用Kissinger方法看到固化体系的反应级数均为0.9左右,表观活化能值为66kJ/mol;Ozawa方法的处理结果与之近似,但从Ozawa方法可以看到未加入有机蒙脱土的体系在反应后期固化反应明显受扩散控制,表现为活化能随固化程度的增加而增加;而加入有机蒙脱土的体系,其表观活化能则自始至终表现的较为均匀。这是由于反应后期蒙脱土片层被打开,片层间的铵盐对固化起到催化作用所致。

【Abstract】 The paper introduces the history and importance of the curing kinetic studies, then the author gives the analyses to several important curing kinetic methods by his experience of dealing with curing data and information from relative literatures. The author also expatiates on the application premise, suppose condition and curing model to every curing method.The author makes a simple curing dealing software by VBA language. With the help of the software, the user can deal with the data conveniently based on the Kissinger method; however, complex function is not reachable because of the VBA language’s problem itself.The emphasis of this paper is put upon a VB program "curing kinetic operating system" programmed by the author with ten-thousand-lines codes. The software realized the aim of design by using some new methods and new arithmetic with clear program structure and friendly user interface. The software provides six methods to its user, including Kissinger method. Ozawa method, Freeman-Carroll method, Zavkovik method, Extrapolate method and Satava-Sestak method. Users can choose appropriate methods from them and use them to deal with different curing systems. On the other hand, there are some useful tools in the software, such as plot tool and phase fit tool etc.The software, Curing kinetic dealing system, was applied to analyze Epoxy/TOA/Org-MMT curing system and Epoxy/DETA/Org-MMT curing system. Both initial curing temperature and final temperature of two systems moved to the peak temperature of the systems with addition of Org-MMT, and the peak temperatures were kept constant. As to Epoxy/TOA/Org-MMT system, the reaction order was 0.9 and active energy was 66kJ/mol by Kissinger method; and a similar result was obtained by Ozawa method. The curing reaction was controlled clearly by diffusion mechanism in the later stage of curing reaction without addition of Org-MMT, which leads to the increment of active energy with extend of curing; as to the curing system with addition of Org-MMT, the value of active energy was always kept the same level, which can be explained by the catalytic function of amine salt inserted in the galleries of Org-MMT.

【关键词】 热固性树脂固化动力学DSC固化模型VBAVB算法
【Key words】 Thermosetting resinCureKineticDSCCuring modelVBAVBArithmetic
  • 【分类号】TP399
  • 【被引频次】10
  • 【下载频次】443
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