Effect of Electron Beam Irradiation upon and Electrical Conduction Mechanism for New Polymeric Materials

电子束辐照对新型高分子材料的影响及导电机制

• 批准号: 10650317
• 负责人: FUJITA Shigetaka
• 金额: $ 1.02万
• 依托单位: Hachinohe Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650317/
• 关键词: Heat resistance polymer; Effect of electron beam irradiation; Conduction current; Space charge; Thermally stimulated current

Polyetheretherketon (PEEK) and polyimide (P1) that had been irradiated with an electron beam at 25, 50, 75, or 100 Mgy were used as samples. With PEEK, the conduction current of irradiated materials produced a small peak at a temperature between 200 and 210℃ and a space charge with a density that was not measurable by a PEA method was generated. Also, the conduction current decreased and the hopping distance shortened due to the cross-linking effect of irradiation. On the other hand, with P1, the conduction current of irradiated materials displayed a rapid increase around 250℃, but formation of the space charge was not observed. Next, the poling voltage (VィイD2pィエD2) was supplied at 0.5, 1.0, and 1.5 kV while the poling temperature (TィイD2pィエD2) was set at 100, 140, and 180℃ The temperature at which the thermally stimulated current (TSC) of the irradiated PEEK formed its peak shifted toward higher temperatures as the dose increased. Then, the bond energy was measured using an XPS apparatus and the chemical shift of these bonds was analyzed. As a result, as the dose increased, the strength of C-O and C=O bonds also increased, but that of C-C decreased. These results revealed that when an electron beam is irradiated, the cross-linking takes place, but the collapse takes place at the same time to increase the quantity of dipoles. In addition, the relationship between structural change and the formation of the space charge that resulted from the application of DC bias voltage (VィイD2bィエD2) was investigated through the use of the PEA method. When VィイD2bィエD2 was applied, an electric charge was injected through the electrodes and a homogenous space charge was generated, but the space charge was harder to generate as the dose increased.

聚醚醚酮（PEEK）和聚酰亚胺（P1）分别在25、50、75或100毫吉的电子束照射下作为样品。在PEEK的作用下，辐照材料的传导电流在200 ~ 210℃之间产生一个小的峰值，产生了一个密度不能用PEA方法测量的空间电荷。由于辐照的交联效应，导通电流减小，跳变距离缩短。另一方面，当P1时，辐照材料的传导电流在250℃左右迅速增大，但未观察到空间电荷的形成。然后，在0.5、1.0和1.5 kV的极化电压下，在100、140和180℃的极化温度下，设置极化温度。辐照PEEK的热激电流（TSC）形成峰值的温度随着剂量的增加而向更高的温度移动。然后用XPS仪测量了键能，并分析了键的化学位移。因此，随着剂量的增加，C-O和C=O键的强度也增加，但C-C键的强度降低。这些结果表明，当电子束辐照时，交联发生，但同时发生坍塌以增加偶极子的数量。此外,结构变化之间的关系和空间电荷的形成导致应用程序的直流偏置电压(VィイD2bィエD2)研究通过使用豌豆的方法。当施加V * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *时，通过电极注入电荷，产生均匀的空间电荷，但随着剂量的增加，空间电荷更难产生。

项目成果

K.Shinyama: "Influence of Electron Beam Irradiation on Thermally Stimulated Current in Polyetheretherketone"Transations of Institute of Electrical Engineers of Japan. Vol.118-A, No.11. 1241-1246 (1998)

K.Shinyama：“电子束辐照对聚醚醚酮中热刺激电流的影响”日本电气工程师学会翻译。

S. Fujita: "Dielectric Properties of Electron Beam Irradiated PEEK"Proceedings of IEEE 10th International Symposium on Electrets. 115-118 (1999)

S. Fujita：“电子束辐照 PEEK 的介电性能”IEEE 第 10 届国际驻极体研讨会论文集。

Y. Kamei: "Space Charge in Polyimide Film after Water Absorption"To be published in Proceedings of 6th International Conference on Properties and Applications of Dielectric Materials. (2000)

Y. Kamei：“吸水后聚酰亚胺薄膜中的空间电荷”将发表在第六届介电材料性能与应用国际会议论文集上。

Y. Kamei: "Space Charge in Polyimide Film Exposed to High-Dose Electron Beam"Proceedings of IEEE 10th International Symposium on Electrets. 67-70 (1999)

Y. Kamei：“暴露于高剂量电子束的聚酰亚胺薄膜中的空间电荷”IEEE 第 10 届国际驻极体研讨会论文集。

S. Fujita: "ELECTRICAL PROPERTIES AND SPACE CHARGE DISTRIBUTION OF ELECTRON BEAM IRRADIATED PEEK"Abstracts of International Seminar on Polarization and Space Charge Phenomena in Polymer Dielectrics. 11 (1999)

S. Fujita：“电子束辐照 PEEK 的电性能和空间电荷分布”聚合物电介质极化和空间电荷现象国际研讨会摘要。