利用热重-微商热重( TG-DTG-DSC)研究了在氮气、空气氛围中ENR硫化胶的热降解动力学，根据不同升温速率下得到的热重数据，通过Ozawa-Flynn-Wall模型求取热降解过程的活化能E、指前因子A等参数，得到ENR硫化胶在不同气氛下降解反应过程中动力学参数方面的差异。 ENR在氮气气氛中降解时为一步反应，在空气中为复杂多步反应。另外，空气气氛中的活化能E和指前因子A均大于氮气中。
The thermal degradation kinetics of ENR Vulcanizate in nitrogen and air was studied by using thermo-gravimetry-differential thermogravimetry-differential scanning calorimetry. The thermogravmetric data were obtained under different heating rates,and the parameters of the thermal degradation process,such as activation energy E and pre-exponential factor A,were calculated according to the Ozawa-Flynn-Wall model,and find out the difference be-tween these two kinds of thermal degradation process in different atmosphere. It is a multi-steps reaction in the air atmosphere for the degradation of ENR,when one step reaction in nitrogen. Moreover,the Ea and A of ENR degra-dation in air are higher than those of ENR in nitrogen.
参考文献
| [1] | 汪月琼,何灿忠,罗勇悦,王凤祥,杨昌金,钟杰平,彭政.环氧化天然橡胶在全钢子午线轮胎胎面配方中的应用[J].广东化工,2012(14):189-190. |
| [2] | 汪月琼,何灿忠,罗勇悦,杨昌金,钟杰平,彭政.环氧化天然橡胶对天然橡胶/二氧化硅复合材料微观结构和性能的影响[J].合成橡胶工业,2012(06):449-452. |
| [3] | 余和平;李思东;彭政.环氧化天然橡胶的制备与热降解研究[J].现代科学仪器,1998(05):31-33. |
| [4] | 余和平,陈鹰,李思东,彭政,黎沛森.环氧化天然橡胶凝胶与溶胶的热降解[J].热带作物学报,2000(02):19-22. |
| [5] | 张北龙,陈美,刘惠伦.硫化环氧化天然橡胶的热分析[J].应用化学,2001(04):332-334. |
| [6] | FLYNN J H;WAII L A .A quick,direct method for the determination of activation energy from thermogravimetric data[J].Journal of Polymer Science Part B:Polymer Letters,1966,4(05):323-328. |
| [7] | OZAWA T .Kinetics of non isothermal crystalliza-tion[J].POLYMER,1971,12(03):150-158. |
| [8] | 钟杰平,杨磊,李程鹏,李思东,侯婷婷.氯化钙凝固天然橡胶的热分析研究[C].中国化工学会2006年年会暨全国第二届化工新材料学术技术报告会论文集(摘要),2006:496-506. |
| [9] | 杨有财,李荣勋,刘光烨.热降解动力学方法研究ABS的降解机理[J].中国塑料,2010(07):47-50. |
| [10] | 孙双月,武玉亮,汪晓东.阻燃POM的热降解动力学研究[J].广州化工,2014(07):71-73,92. |
| [11] | 蒋春跃,李鹏陶,潘浩宇.尼龙69的热降解动力学研究[J].浙江工业大学学报,2013(01):13-16. |
| [12] | 刘文广,张秀成,李红媛,刘滨,李春凡.纳米氧化锌填充PBS复合材料性能的研究[J].中国塑料,2012(04):86-91. |
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