Studies on Production of Supercooling State and Electrical Properties of Water Condenser for Energy Compression

能量压缩水冷凝器过冷状态产生及电性能研究

• 批准号: 01550212
• 负责人: SAKAI Yosuke
• 金额: $ 1.41万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 1990
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01550212/
• 关键词: Pulse Power; Condenser For Energy Compression; Supercooling; Water; Hydrophilic Gell; Dielectric Material; Dielectric Constant; 水コンデンサ-; 過冷却水; 凍結温度; スペ-サ効果; 電場・磁場効果

Water has been taken as a dielectric material of pulse forming lines for pulse-power technology because of its high dielectric constant. The dielectric constant increases with decreasing temperature. Most of the work done on electrical characteristics of water so far is limited in temperature range above 0^ﾟC. The purpose of this is to make supercooling water stable, and to know the electrical properties of it. Water-swollen cross-linked poly-acrylic-acid (PAA) gels were taken as well. The main results summarized follows.1) The frozen temperature was around -15^ﾟC for the water and -12^ﾟC for the PAA. This temperature depended on the surface tension of materials which holds water, and the presence of electric and magnetic fields.2) The dielectric constant of the water increased with decreasing temperature in a similar characteristic as that in temperatures above zero.3) The PAA gel contained water around 5 times as large as the gel volume itself. However, the conductivity became about 3 orders of magnitude higher than that of the water.4) The swelling and contraction behavior of the PAA gel could be controlled by the pH values of the solvent and the electric field strength.In order to develop supercooling-water and -PAA gel to the dielectric materials, the breakdown field strength, influence of shock of breakdown on the supercooled behaviors, etc. and development of technology to eliminate oligomers should be investigated further.

水具有较高的介电常数，已被用作脉冲功率技术中脉冲形成线的介质材料。介电常数随温度的降低而增大。到目前为止，大多数关于水的电特性的工作都局限在0ﾟC以上的温度范围内。这样做的目的是使过冷水稳定，并了解它的电特性。制备水溶胀交联聚丙烯酸(PAA)凝胶。主要研究结果如下：1)水的冻结温度约为-15ﾟC，PAA的冻结温度约为-12ﾟC。这一温度取决于持水材料的表面张力以及电场和磁场的存在。2)水的介电常数随着温度的降低而增加，这与零以上温度下的情况类似。3)PAA凝胶中的水大约是凝胶体积的5倍。4)PAA凝胶的溶胀和收缩行为可以由溶剂的pH值和电场强度来控制，为了开发出用于介电材料的过冷水和-PAA凝胶，还需要进一步研究击穿电场强度、击穿冲击对过冷行为的影响等，以及开发消除齐聚物的技术。

项目成果

角田 勝巳: "親水性ゲル(ポリ-アクリル酸)の電気的特性(6)pHに対する膨潤特性" 第25回応用物理学会北海道支部学術講演会論文集. B-11 (1990)

Katsumi Tsunoda：“亲水性凝胶（聚丙烯酸）的电特性（6）对pH的溶胀特性”日本应用物理学会第25届北海道分会学术会议记录B-11（1990年）。

N. Sugai: "Electrical properties of Hydrophilic gel (poly-acrylic-acid) (5)"" Hokkaido Branch Meeting of Jap. Soc. Appled Phys.25, B-10. (1990)

N. Sugai：“亲水性凝胶（聚丙烯酸）的电特性（5）””日本社会学会 Appled Phys.25 北海道分会，B-10。（1990 年）

K. Kakuta: "Electrical properties of Hydrophilic gels-Control of swell and contraction of Poly-acrylicacid"" Hokkaido Branch Joint Convention and Rel. Soc.206. (1990)

K. Kakuta：“亲水凝胶的电特性 - 聚丙烯酸的膨胀和收缩的控制””北海道分会联合会议和 Rel.Soc.206。（1990 年）

須貝 伸行: "親水性ゲル(ポリ-アクリル酸)の電気的特性(4)" 平成元年電気関係学会北海道支部連合大会論文集. 167 (1989)

Nobuyuki Sugai：“亲水性凝胶（聚丙烯酸）的电性能（4）”1989年电气协会北海道分会会议记录167（1989）。

須貝 伸行: "親水性ゲル(ポリ-アクリル酸)の電気的特性(5) 電流ー電圧特性" 第25回応用物理学会北海道支部学術講演会論文集. B-10 (1990)

菅井伸行：“亲水性凝胶（聚丙烯酸）的电特性（5）电流-电压特性”日本应用物理学会北海道分会学术会议第25届会议记录B-10（1990年）。