研究了先氧老化后聚碳酸酯(PC)的结构和性能变化.力学性能测试结果表明,老化后,PC的冲击强度下降,拉伸强度、弯曲强度上升;扫描电镜断口形貌分析和差示扫描量热分析显示,光氧老化后PC材料的韧性有一定损失;傅立叶变换红外光谱分析显示PC老化后有酚类、酮类产物生成;PC的光氧老化可能是由于弗利斯重排反应产生自由基诱发PC分子链光氧降解反应所致.
参考文献
| [1] | Jang BN;Wilkie CA .The thermal degradation of bisphenol A polycarbonate in air[J].Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems,2005(1/2):73-84. |
| [2] | Jang, BN;Wilkie, CA .A TGA/FTIR and mass spectral study on the thermal degradation of bisphenol A polycarbonate[J].Polymer Degradation and Stability,2004(3):419-430. |
| [3] | Jang BN;Wilkie CA .The effects of triphenylphosphate and recorcinolbis(diphenylphosphate) on the thermal degradation of polycarbonate in air[J].Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems,2005(1/2):1-12. |
| [4] | Uyar T;Tonelli AE;Hacaloglu J .Thermal degradation of polycarbonate, poly(vinyl acetate) and their blends[J].Polymer Degradation and Stability,2006(12):2960-2967. |
| [5] | 詹茂盛,方义,王瑛,范荣峥.热空气老化和热水老化对PC冲击性能的影响[J].航空材料学报,2000(04):52-59. |
| [6] | Nagai, N;Matsunobe, T;Imai, T .Infrared analysis of depth profiles in UV-photochemical degradation of polymers[J].Polymer Degradation and Stability,2005(2):224-233. |
| [7] | Geretovszky Z.;Hopp B.;Bertoti I.;Boyd IW. .Photodegradation of polycarbonate under narrow band irradiation at 172 nm[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2002(1/4):85-90. |
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%