采用差示扫描量热法DSC研究了水性聚氨酯/功能化石墨烯(WPU/FGNs)纳米复合材料的非等温结晶行为,分别采用Ozawa方程、莫志深方程研究复合材料的非等温结晶动力学,并通过Kissinger方程计算了结晶过程中的活化能.结果表明,石墨烯在复合材料的结晶过程中起到异相成核剂的作用,提高了复合材料的结晶起始温度、峰值温度和结晶速率;增加石墨烯的质量分数,复合材料的结晶维数增加;石墨烯增加至0.3％,复合材料的活化能从-47.74 kJ/mol降低至-53.60 kJ/mol,继续增加石墨烯至1.0％,复合材料的活化能增加至-41.74 kJ/mol.
参考文献
| [1] | Changgu Lee;Xiaoding Wei;Jeffrey W. Kysar;James Hone.Measurement of the Elastic Properties and Intrinsic Strength of Monolayer Graphene[J].Science,20085887(5887):385-388. |
| [2] | Nair RR;Blake P;Grigorenko AN;Novoselov KS;Booth TJ;Stauber T;Peres NM;Geim AK.Fine structure constant defines visual transparency of graphene.[J].Science,20085881(5881):1308-1308. |
| [3] | Balandin AA;Ghosh S;Bao WZ;Calizo I;Teweldebrhan D;Miao F;Lau CN.Superior thermal conductivity of single-layer graphene[J].Nano letters,20083(3):902-907. |
| [4] | Stoller MD;Park SJ;Zhu YW;An JH;Ruoff RS.Graphene-Based Ultracapacitors[J].Nano letters,200810(10):3498-3502. |
| [5] | Virendra Singh;Daeha Joung;Lei Zhai;Soumen Das;Saiful I. Khondaker;Sudipta Seal.Graphene based materials: Past, present and future[J].Progress in materials science,20118(8):1178-1271. |
| [6] | Jean L. Leblanc.Rubber-filler interactions and rheological properties in filled compounds[J].Progress in Polymer Science,20024(4):627-687. |
| [7] | Asli Begenir;Stephen Michielsen;Behnam Pourdeyhimi.Melt-Blowing Thermoplastic Polyurethane and Polyether-Block-Amide Elastomers: Effect of Processing Conditions and Crystallization on Web Properties[J].Polymer engineering and science,20097(7):1340-1349. |
| [8] | Yang, Z.;Lu, H..Nonisothermal crystallization behaviors of poly(3-hexylthiophene)/reduced graphene oxide nanocomposites[J].Journal of Applied Polymer Science,20131(1):802-810. |
| [9] | 莫志深.一种研究聚合物非等温结晶动力学的方法[J].高分子学报,2008(07):656-661. |
| [10] | Zhang, F.;Peng, X.;Yan, W.;Peng, Z.;Shen, Y..Nonisothermal crystallization kinetics of in situ nylon 6/graphene composites by differential scanning calorimetry[J].Journal of Polymer Science, Part B. Polymer Physics,201119(19):1381-1388. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%