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1)  high dielectric permittivity
高介电系数
2)  Permittivity [英][,pə:mi'tivəti]  [美][,pɝmɪ'tɪvətɪ]
介电系数
1.
The real and imaginary parts of complex permittivity and permeability, the change of absorbing microwave capability of the materials with the variation of microwave frequency, component of Co 2+ and Ti 4+ , and coat thickness have been measured and analyzed.
对W型和Y型复合组分平面六角晶系铁氧体的制备及两者混合材料涂层的吸波特性进行了研究 ,并对其复相对介电系数和复相对磁导率以及吸收衰减量随微波信号频率、掺杂Co2 + 、Ti4 + 含量、涂层厚度的变化进行了测试和分析 ,发现当表示含杂量的x =0 。
2.
There is divergence in physical properties such as refractive indices and permittivity along inplane and outofplane directions.
由于聚酰亚胺分子链的刚性,在成膜过程中,其分子链沿膜平面排列(取向),构成了各向异性,导致膜平面方向与垂直于膜平面方向的物性参数(如折射率、介电系数)不相同。
3.
Mechanism of the Change of Permittivity in Sodium Chloride Aqueous Solution Under the Microwave Action;
实验研究发现,微波作用下的恒温氯化钠水溶液随着微波功率的增加,其复介电系数的虚部会发生明显变化从理论上分析表明,在微波场中极化水分子转动能级被激发将会引起质子定向移动和团簇氢键完好的概率变化而影响氯化钠水溶液电导率,进而造成其复介电系数虚部的明显变化。
3)  dielectric permittivity
介电系数
1.
Measuring apparatus and data processing method of dielectric permittivity at high voltage have been set up.
研究了 PZT/P(VDF- Tr FE)和 PT/P(VDF- Tr FE) 0 - 3型铁电复合物厚片介电系数的电场依赖性。
2.
A system for measuring dielectric permittivity of thick films and data processing method have been set up.
用自建的适合厚片材料测量的介电测试系统研究了不同组分含量的PZT/P[VDF(77)- TrFE(23)] 0-3型铁电复合物厚片介电系数的电场和温度依赖性在低电场和室温附近的温度范围,由 Bruggeman方程预测的介电系数和实验值较为接近。
4)  dielectric coefficient
介电系数
1.
Aimed at finding a new detecting method for the moisture content in industrial materials, me=asurement is made of the dielectric coefficient and the chroma ε(f) of water under the action of magnetic field as well as of the variation of frequency of applied electric field.
基于研究工业物料水分检测新方法的目的,对磁场作用下水的介电系数随外加电场频率变化的色散特征ε(f)进行了测试。
2.
The dielectric coefficients of the coatingsubstract, the medium liquid and the coating itself were determined.
通过测量浸入介质液的涂层(基片)、介质液以及涂层本身的介电系数,计算浸入涂层的的体积分数,再利用对Fick第二定律的级数解,求得介质的扩散系数,以评价涂层的质量。
5)  dielectric constant
介电系数
1.
In the system SBT-PT,the high dielectric constant batches is existential in wider range.
SBT-PT系统中,较宽范围内存在高介电系数组成点。
2.
The empirical formula, -( T-T 02 )( T-T 01 ) A 2=d 1d 2A 1 ,is derived from complementary formula used for adjusting dielectric constant and displacement formula derived by vibration model of B-site ions,and the characteristics of ferroelectric PZN and PMN based ceramic materials under biased voltage were studied.
研究表明用此式对调整弛豫型铁电陶瓷的有效介电系数更加直观。
3.
By measuring capacitance of the capacitor,relationship between their dielectric constant and dielectric loss factor with ambient temperature was studied carefully.
根据电桥平衡原理,将绝缘纸做成电容器试样,通过测量被测试样的电容量换算出绝缘纸的介电系数ε,对比分析了不同温度下绝缘纸和打印纸的介电系数ε和损耗角正切tanδ,结果表明在相同条件下绝缘纸比打印纸具有更好的绝缘性、耐热性和低损耗特性。
6)  high dielectric constant
高介电常数
1.
Preparation and Characterization of New Perovskite-like High Dielectric Constant Oxides;
新型类钙钛矿高介电常数氧化物的制备与结构表征
2.
The introduction of Re for purification of aluminum ingot,corrosion technology of pit and reaming,and composite oxide film with high dielectric constant are summarized mainly.
从高压铝阳极箔的立方织构、腐蚀技术、化成工艺等方面概述了目前高压铝电解电容器用电极箔研究领域的最新进展,其中包括加入稀土净化铝锭基体、发坑和扩孔的腐蚀技术、复合高介电常数氧化膜。
3.
For example, the flexibility compositeswith a high dielectric constant have a great future in the electronic industry field.
例如,高介电常数的柔性聚合物基电介质复合材料在电子工业领域可能有广泛的应用前景,它可以被用来制作具有任意形状的多层片式电容器,因此提高电介质材料的介电常数具有非常重要的意义。
补充资料:介电常数温度系数
分子式:
CAS号:

性质: 一定温度范围内、温度每升高1℃时介电常数的相对平均变化率。表达式为:(式中,αε为介电常数的温度系数,℃-1;ε为介电常数,F/m ;Δε为温度升高后介电常数的变化量;Δt为温度的升高值,℃)。对陶瓷介质材料介电常数温度系数αε也常用TKE或T表示。温度变化范围通常为-25~+85℃或-55~+125℃。TKE的数值是材料重要的电参数,用它可作为许多陶瓷介质材料分类的依据,即有正、负和零温度系数材料之分。不同材料的介电常数温度系数可具有不同的用途。

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