等温DSC法研究风电叶片用环氧树脂固化动力学
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摘要
为研究风电叶片用环氧树脂的固化反应进程,采用等温DSC法测得了树脂体系在60℃、70℃、80℃下的等温放热曲线,并通过Matlab拟合功能对n级动力学模型、自催化模型和Kamal模型三种基本模型进行了分析,结果表明该树脂体系符合Kamal模型。在对Kamal模型计算结果与实验数据的对比中发现,计算结果在后段出现了偏高的现象,因此必须考虑扩散效应的影响。在对两个扩散控制Kamal模型的对比中可以发现Chern模型结果较优,该模型对转折点附近的拟合结果较为符合实际。
In order to study the curing reaction process of epoxy resin for wind-power blades,isothermal DSC was used to measure heat flow curve of resin system at 60 ℃,70 ℃,80 ℃,and three kinds of basic models fitted by Matlab function of n-order dynamics model,the autocatalytic model and Kamal model are analyzed. It turns out that the resin system conforms to the Kamal model. By comparing calculation results with the experimental data,it is found that the calculation results are always higher than the experimental data. Therefore,the effect of diffusion effect must be considered. When we compare the two diffusion control Kamal models,we found that Chern fitting results are better than another. Finally,the curing kinetics equation was obtained by using the correctional Kamal model.
In order to study the curing reaction process of epoxy resin for wind-power blades,isothermal DSC was used to measure heat flow curve of resin system at 60 ℃,70 ℃,80 ℃,and three kinds of basic models fitted by Matlab function of n-order dynamics model,the autocatalytic model and Kamal model are analyzed. It turns out that the resin system conforms to the Kamal model. By comparing calculation results with the experimental data,it is found that the calculation results are always higher than the experimental data. Therefore,the effect of diffusion effect must be considered. When we compare the two diffusion control Kamal models,we found that Chern fitting results are better than another. Finally,the curing kinetics equation was obtained by using the correctional Kamal model.
引文
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[11]代晓青,肖加余,曾竟成,等.等温DSC法研究RFI用环氧树脂固化动力学[J].复合材料学报,2008,25(4):18-23.
[12]Garschke C,Parlevliet P P,Weimer C,et al.Cure kinetics and viscosity modelling of a high-performance epoxy resin film[J].Polymer Testing,2013,32(1):150-157.
[13]Chern C S,Poehlein G W.A kinetic model for curing reactions of epoxides with amines[J].Polymer Engineering&Science,1987,27(11):788-795.
[14]Khanna U,Chanda M.A kinetic scheme for anhydride curing of diglycidyl ester with tertiary amine as catalyst[J].Journal of applied polymer science,1993,50(9):1635-1644.
[15]刘天舒,张宝艳,陈祥宝.3234中温固化环氧树脂体系的固化反应动力学研究[J].航空材料学报,2005,25(1):45-47.
[2]吴丰树.风力发电可再生能源中的焦点[J].证券导刊,2007(23):24-27.
[3]夏建陵,万厉,杨小华,等.风力发电机叶片用环氧树脂胶粘剂的研究[J].热固性树脂,2008,23(S1):9-11.
[4]赵玉庭.复合材料聚合物基体[M].武汉:武汉工业大学出版社,1992.
[5]Stark E B,Breitigam W V,Farris R D,et al.Resin transfer moulding(RTM)of high performance resins[J].Composite polymers,1990,3(6):423-437.
[6]郑澎,张彦飞,赵贵哲,等.风电叶片用环氧树脂固化动力学特性及力学性能的研究[J].玻璃钢/复合材料,2011(2):8-11.
[7]贾智源,赵俊山,邱桂杰,等.风电叶片用环氧树脂的固化动力学研究[C]//复合材料:创新与可持续发展(上册).2010.
[8]Van Assche G,Swier S,Van Mele B.Modeling and experimental verification of the kinetics of reacting polymer systems[J].Thermochimica Acta,2002,388(1):327-341.
[9]何自强,张惠玲.环氧树脂/对甲基苯基双胍固化反应动力学研究[J].玻璃钢/复合材料,2015(12):53-59.
[10]王遵,邢素丽,曾竟成,等.热固性树脂固化反应动力学模型研究进展[J].高分子材料科学与工程,2007,23(4):11-14.
[11]代晓青,肖加余,曾竟成,等.等温DSC法研究RFI用环氧树脂固化动力学[J].复合材料学报,2008,25(4):18-23.
[12]Garschke C,Parlevliet P P,Weimer C,et al.Cure kinetics and viscosity modelling of a high-performance epoxy resin film[J].Polymer Testing,2013,32(1):150-157.
[13]Chern C S,Poehlein G W.A kinetic model for curing reactions of epoxides with amines[J].Polymer Engineering&Science,1987,27(11):788-795.
[14]Khanna U,Chanda M.A kinetic scheme for anhydride curing of diglycidyl ester with tertiary amine as catalyst[J].Journal of applied polymer science,1993,50(9):1635-1644.
[15]刘天舒,张宝艳,陈祥宝.3234中温固化环氧树脂体系的固化反应动力学研究[J].航空材料学报,2005,25(1):45-47.