研究了电子束辐照固态和熔融态高密度聚乙烯/炭黑(HDPE/CB)导电复合材料的电性能随辐照温度和辐照剂量的变化.结果表明,对固态或熔融态辐照材料而言,其电阻率均随温度的升高而增大.等剂量下,固态辐照材料的PTC强度比熔融态辐照的要高.两种状态经高剂量(＞200kGy)辐照后其材料NTC效应消失.DSC测试证明电阻率的改变与基体的结晶行为以及交联链的形成密切相关.
参考文献
| [1] | J Meyer .Glass transition temperature as a guide to selection of polymers suitable for PTC materials[J].Polymer Engineering and Science,1973,13(06):462-468. |
| [2] | J Meyer .Stability of polymer composites as positive-temperature-coefficient resistors[J].Polymer Engineering and Science,1974,14(10):706-716. |
| [3] | M Narkis;A Ram;Z Stein .Electrical properties of carbon black filled crosslinked polyethylene[J].Polymer Engineering and Science,1981,21:1049-1054. |
| [4] | 益小苏 .[P].CN 96107834.0 |
| [5] | H M Allak;A W Brinkman;J Woods .I-V characteristics of carbon black-loaded crystalline polyethylene[J].Journal of Materials Science,1993,28:117-120. |
| [6] | J H O'Donnell;A K Whittaker .Radiation degradation of linear low density polyethylene :determination of lamellae thickness,crystallinity and crosslinking by solid-state 13C NMR and DSC[J].Radiation Physics and Chemistry,1992,39(02):209-214. |
| [7] | 范五一.炭黑填充复合材料结晶性能的研究[J].高分子材料科学与工程,1994(06):94-97. |
| [8] | F Kohler .[P].U.S.Pat.3243753,1966. |
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%