Increase in Breakdown Strength of PB Film by Addition of Polycyclic Compound
Increase in Breakdown Strength of PB Film by Addition of Polycyclic Compound
复制标题
添加多环化合物提高PB薄膜的击穿强度
DOI：
10.1541/ieejfms.123.926
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发表时间：
2003
影响因子：
--
通讯作者：
Megumi Ishigaki
中科院分区：
文献类型：
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作者：
Y. Yamano;Megumi Ishigaki
研究发现，添加多环化合物：蒽(An)、苝(Pr)、9、10溴蒽(Br_An)、1、7溴苝(Br_Pr)可以提高LDPE薄膜的直流击穿强度(BDS)。我们还使用了对硝基苯偶氮苯二酚（Az_hn）作为添加剂。实验结果表明，所使用的所有添加剂均能有效提高BDS。最有效的添加剂是Br_An。添加该添加剂的薄膜的BDS比未添加该添加剂的薄膜高约1.6倍。这些结果是在 -20°C 至 20°C 的温度范围内观察到的。 BDS特性表明薄膜的击穿可能是由于来自阴极的电子雪崩造成的。通过比较五种添加剂的实验结果，研究了BDS增加的原因。含有添加剂的薄膜的紫外吸收光谱表明，BDS 的增加可能主要不是由于添加剂与电子载流子碰撞时添加剂的激发而引起的动能吸收。 TSC曲线表明，添加剂的存在增加了薄膜中俘获的负电荷数量，添加剂可能位于薄膜中结晶区和非晶区之间的边界。据认为，BDS的增加可以通过添加剂捕获电子载流子来实现。在本研究中，由于添加剂偶极矩引起的电子载流子散射并不是 BDS 增加的有效因素，因为所使用的多环化合物没有偶极子。
The An increase in dc breakdown strength (BDS) for LDPE film was found using the additives of polycyclic compounds: anthracene(An), perylene(Pr), 9, 10 bromo-anthracene(Br_An), 1, 7 bromo-perylene(Br_Pr). We also used an additive of p-nitorobenzene-azoresorcinol(Az_hn). The experimental results indicate that all the additives used are effective in increasing BDS. The most effective additive is Br_An. BDS for the film with this additive is about 1.6 times higher than that for the film without additive. These results are observed in the temperature range between -20°C and 20°C. The BDS characteristics indicate that the breakdown of film may be due to an electron avalanche from the cathode. The reason for the increase in BDS is studied by comparing the experimental results for the five additives. UV absorption spectra for the films with additive suggest that the increase in BDS may not result mainly from the kinetic energy absorption due to the excitement of the additive at the collision between additive and electron carrier. TSC curves indicate that the quantity of negative charge trapped in the film is increased by the existence of the additive, which may locate at the boundary between the crystalline and amorphous regions in the film. It is considered that the increase in BDS may be achieved by a trapping of the electron carrier by the additive. The electron carrier scattering due to the dipole moment of the additive is no effective factor for the increase of BDS in this study because the polycyclic compounds used have no dipole.