采用X射线衍射(XRD)、偏光显微镜(POM)以及差示扫描量热(DSC)法,考察了纳米金刚石(Nano-diamond)对线型低密度聚乙烯(LLDPE)的结晶形态以及非等温结晶行为的影响.通过Jeziorny法和莫志深法研究了复合材料的非等温结晶动力学,并利用Kissinger方程计算了LLDPE/ Nano-diamond复合材料的非等温结晶活化能.结果表明:Nano-diamond是一种有效的成核剂,为LLDPE结晶提供了更多的活化晶核,起到了异相成核的作用,既提高了LLDPE的结晶起始温度T.、结晶峰值温度Tp和结晶速率,又降低了球晶的尺寸,使得球晶的分布更为均匀致密;添加Nano-diamond使得复合材料的结晶迁移活化能降低,当Nano-diamond含量为1％时,复合材料结晶活化能达到最小值.
参考文献
| [1] | 孙玉梅.透明LLDPE膜专用料的研制[J].塑料工业,2005(09):59-62. |
| [2] | Kundu PP.;Biswas J.;Kim H.;Choe S. .Influence of film preparation procedures on the crystallinity, morphology and mechanical properties of LLDPE films[J].European Polymer Journal,2003(8):1585-1593. |
| [3] | MANAUR A C;MULLER A J .Nucleation and mystallization of blends of polypropylene and ethylene/α-olefin copolymers[J].Macromolecular Chemistry and Physics,2000,201:958-972. |
| [4] | Pengwan Chen;Fenglei Huang;Shourong Yun .Characterization of the condensed carbon in detonation soot[J].Carbon: An International Journal Sponsored by the American Carbon Society,2003(11):2093-2099. |
| [5] | MIRONOV E;KORETZ A;PETROV E.The research of detonation nanodiamond structure by optical methods[J].Diamond and Related Materials,2002(11):872-876. |
| [6] | Q. Zou;Y.G. Li;L.H. Zou .Characterization of structures and surface states of the nanodiamond synthesized by detonation[J].Materials Characterization,2009(11):1257-1262. |
| [7] | Maitra, U;Prasad, KE;Ramamurty, U;Rao, CNR .Mechanical properties of nanodiamond-reinforced polymer-matrix composites[J].Solid State Communications,2009(39/40):1693-1697. |
| [8] | Lee JY;Lim DS .Tribological behavior of PTFE film with nanodiamond[J].Surface & Coatings Technology,2004(0):534-538. |
| [9] | I. Neitzel;V. Mochalin;I. Knoke;G.R. Palmese;Y. Gogotsi .Mechanical properties of epoxy composites with high contents of nanodiamond[J].Composites science and technology,2011(5):710-716. |
| [10] | JEZIOMY A .Parameters characterizing the kinetics of the non-isothermal crystallization of poly (ethyleneterephthalate) determined by DSC[J].POLYMER,1978,19:1142-1148. |
| [11] | 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. |
| [12] | KISSINGER H E .Reactive kinetics in differential thermal analysis[J].Analytical Chemistry,1957,29(11):1702-1706. |
| [13] | AVRAMI M .Kinetics of phase change I general theory[J].Journal of Chemical Physics,1939,7:1103-1112. |
| [14] | OZAWA T .Kinetics of the non-isothermal crystallization[J].POLYMER,1971,12:150-158. |
| [15] | OZAWA T .A New Method of analyzing thermogravimetric data[J].Bulletin of the Chemical Society of Japan,1965,38:1881-1886. |
| [16] | DOBREVA A;GUTZOW I .Activity of Substrates in the catalyzed nucleation of glass-forming melts I Theory[J].J Non-crystalline Solids,1993,162:1-12. |
| [17] | DOBREVA A;GUTZOW I .Activity of Substrates in the catalyzed nucleation of glass-forming melts Ⅱ experimental evidence[J].J Non-crystalline Solids,1993,162:13-25. |
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%