采用非等温DSC研究了一种复合材料用环氧树脂体系的固化反应.采用n级反应模型和Malek等转化率法确定了固化反应动力学方程,通过外推法优化其固化工艺,测试优化后工艺下制备的树脂浇铸体的固化度和力学性能.结果表明,n级反应模型与实验值差别较大；采用Malek等转化率法判断固化反应按自催化反应机理进行,在2.5～15℃/min升温速率下,自催化模型计算曲线与实验曲线吻合较好；优化确定其固化工艺为70℃/2h+110℃/2h,在该工艺下制备的浇铸体固化度达98.51%,拉伸强度和弯曲强度分别为75.11MPa和128.10MPa.
参考文献
| [1] | 孙曼灵.环氧树脂应用原理与技术[M].北京:机械工业出版社,2002 |
| [2] | 郝元凯;肖加余.高性能复合材料学[M].北京:化学工业出版社,2003 |
| [3] | 于佳,张博明,王殿富,武湛君,张宝艳,陈祥宝.典型双马来酰亚胺树脂固化动力学模型的研究[J].复合材料学报,2004(01):78-83. |
| [4] | 汪明,张佐光,胡宏军,李宏运.RTM用环氧树脂体系的固化工艺研究[J].玻璃钢/复合材料,2002(02):38-40. |
| [5] | 郭战胜,杜善义,张博明,武湛君,李方,傅求理.先进复合材料用环氧树脂的固化反应和化学流变[J].复合材料学报,2004(04):146-151. |
| [6] | 赵卫娟,张佐光,孙志杰,张大兴.非等温法研究TGDDM/DDS体系固化反应动力学[J].高分子学报,2006(04):564-568. |
| [7] | 张竞,李全步,蒋英,王晓东,黄培.非等温DSC法研究高韧性低收缩环氧体系固化动力学[J].高分子材料科学与工程,2009(06):99-102,106. |
| [8] | Lee JY.;Shim MJ.;Kim SW.;Choi HK. .Kinetic studies of an epoxy cure reaction by isothermal DSC analysis[J].Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems,2000(1/2):111-117. |
| [9] | Rosu D.;Cascaval CN.;Mustata F.;Ciobanu C. .Cure kinetics of epoxy resins studied by non-isothermal DSC data[J].Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems,2002(1/2):119-127. |
| [10] | Rosu D.;Cascaval CN.;Mustata F. .Investigation of the curing reactions of some multifunctional epoxy resins using differential scanning calorimetry[J].Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems,2001(1/2):105-110. |
| [11] | Cai Hongyang et al.Curing kinetics study of epoxy resin/flexible amine toughness systems by dynamic and isothermal DSCP[J].Thermochimica Acta,2008,473(1-2):101. |
| [12] | Sergey Vyazovkin .Thermal Analysis[J].Analytical chemistry,2008(12):4301-4316. |
| [13] | Kissinge H E .Reaction kinetics in differential thermal analysis[J].Analytical Chemistry,1957,29(11):1702. |
| [14] | Crane L W;Dynes P J;Kaelble D H .Analysis of curing kinetics in polymer composites[J].Polymer Letters,1973,11(08):533. |
| [15] | 于伯龄;姜胶东.实用热分析[M].北京:纺织工业出版社,1990:54. |
| [16] | Malek J .The kinetics analysis of non-isothermal data[J].Thermochimica Acta,1992,200(1-2):257. |
| [17] | Montserrat S;Malek J .A kinetic analysis of the curing reaction of an epoxy resin[J].Thermochimica Acta,1993,228(1-2):47. |
| [18] | Senum G I;Yang R T .Rational approximations of the integral of the Arrhenius function[J].Journal of Thermal Analysis and Calorimetry,1977,11(03):445. |
| [19] | Malek J. .Kinetic analysis of crystallization processes in amorphous materials[J].Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems,2000(1/2):239-253. |
| [20] | Sestak J;Berggren G .Study of the kinetics of the mechanism of solid-state reactions at increasing temperatures[J].Thermochimica Acta,1971,3(01):1. |
| [21] | 代晓青,曾竞成,刘钧,肖加余.RFI用环氧树脂固化工艺研究[J].国防科技大学学报,2007(03):22-26. |
| [22] | 王芳.VARTM用环氧树脂固化工艺的研究[J].高科技纤维与应用,2006(01):41-44. |
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