介电损耗

C（60）晶体的介电损耗与分子取向研究

Study of Dielectric Dissipation and Molecular Orientation in C60 Crystal

ZnO压敏陶瓷介电损耗的温度谱研究

Dielectric loss of ZnO varistor ceramics by variable temperature spectroscopy

研究表明，BST/SiN薄膜的介电损耗随着SiN薄层厚度的增加而降低。

It was found that the dielectric loss decreases with the increase of SiN thickness .

Bi系高温超导体的加入使复合材料的介电损耗提高了一个数量级。

The dielectric loss of Bi-system superconductor-impregnated composites was increased by one order of magnitude .

随着Ca含量的增加，介电损耗的弛豫峰向高温移动。

With the increase of Ca content , a shift of the relaxation peak for the dielectric loss to high temperature was observed .

Ce，Y-TZP陶瓷的内耗峰和介电损耗峰机制

Mechanism of internal friction and dielectric loss peaks of ce , y-tzp ceramics

微波混合加热是利用微波烧结低介电损耗陶瓷材料的一种有效方法，SiC是一种典型的预加热体材料。

Microwave hybrid heating is an effective way to sinter the low dielectric loss materials . SiC is a kind of typical preheating material .

采用溶液混炼法制备复合材料时，SR的拉伸强度、撕裂强度明显提高，介电损耗降低。

When nanocomposites were prepared by solution method , the tensile strength and tear strength increased , but dielectric loss decreased .

经过Ni掺杂、Co掺杂以及Ni/Co共掺杂后，产物的形貌、晶相变化不明显，但介电损耗强度增大，主要极化机理归因于离子极化。

Doping of Ni / Co did not change the phase structure , but increased the dielectric loss capacity . The dielectric polarization process was ascribed to ionic polarization .

与聚苯胺相比，镍铁氧体/聚苯胺复合材料的介电损耗角正切tanδε值与磁损耗角正切tanδm值都增大。

Dielectric loss tangent and magnetic loss tangent of the nickel ferrite / polyaniline composites are higher than those of the polyaniline .

在大气中，纳米金红石TiO2的介电损耗以极化损耗（电偶极矩转向极化和离子弛豫极化）为主，而在真空中则以电导损耗为主。

In air , ion relaxation polarization strongly affects the dielectric loss , whereas in vacuum , the dielectric loss depends heavily on electric conductance .

值得指出的是，在高频时（～MHz），两者的介电损耗均远低于基体聚合物。

Noteworthy is that , at high frequencies (~ MHz ), both of them is much lower than that of the parent polymer .

但SrO和TiO2这些杂质相的存在降低了晶界绝缘层的绝缘性，增加了介电损耗。

The existance of SrO and TiO_2 decreases the insulating properties of grain boundaries , which increases dielectric loss .

基于时域BLT方程的传输线介电损耗分析

Analysis of the Dielectric Loss in the Transmission Line Based on Time Domain BLT Equation

当CF用量为0时，复合材料的ε与介电损耗（tanδ）的变化趋势相反；

When the volume fraction of CF was 0 , the change trend of ε and dielectric dissipation factor ( tan δ) of the composites was opposite .

陶瓷的介电损耗明显减小，介电常数有所降低，调谐率明显上升，其中，掺杂量为0.8wt%Al2O3时，陶瓷样品具有最佳的介电调谐性能。

The dielectric constant and dissipation factor decrease and the tunability increases by addition of Al2O3 . The specimen at doping level of 0.8wt % has the optimal overall dielectric properties .

EPS水泥对电磁波的损耗主要依靠水泥中化学成分、矿物质的介电损耗以及多孔结构的谐振作用。

The dielectric loss of the chemical and mineral component in the cement and the resonance of the inner macrostructure contribute to the EM wave absorption and attenuation .

此种玻璃在100℃时体积电阻率为10~（15）Ω·cm，介电损耗为4.1×10~（-3）。

The volume electrical resistivity ( at 100 ℃) of the phlogopite based glass-ceramics is 10 ~ ( 15 ) Ω . cm . The dielectric loss is 4.1 × 10 ~ ( - 3 ) .

发现介电损耗在150K和100K有两个峰。

Two peaks in the dielectric loss are found at 150 K and 100 K.

然而，为控制介电损耗，MWNTs含量将控制在阈值以下。

However , to retain a low dielectric loss , the MWNTs loading should be slightly less than that at the percolation threshold of the nanocomposites .

介电损耗谱上的次级松弛是COPU链段运动的贡献。

The secondary relaxation is attributed to the local motion of the chain segments of polyurethane component .

而当氧等离子体处理功率大于200W时，由于薄膜表面变得十分粗糙，薄膜的介电损耗反而上升。

When the process power is higher than 200W , the dielectric loss of BST thin films increased because of rough surface morphology . 4 .

其中，聚四氟乙烯树脂含量较低的微带天线由于材料间空隙增多，导致介电损耗增大，其VSWR大于2，回波损耗较大。

The antennas which had low resin content will increase holes in composites and result in high dielectric loss . And the VSWR value is large than 2 and high return loss .

共混树脂与TDE-85环氧树脂、4501A树脂的浇铸体及相应复合材料性能的比较，表明共混树脂具有较好的工艺性、较低的介电损耗；

The new resin compared to TDE-85 resin , 4501 A casting and their composites has appropriate technics and lower dielectric loss .

随着沉积温度（1010～1030K）的提高，CVD金刚石膜的介电损耗减小。氮气加入量的增加，CVD金刚石膜的介质损耗增加。

Results also show that dielectric loss ( tan δ) of CVD diamond film decreases with the increase of deposition temperature ( 1010K ~ 1030K ), and dielectric loss increases with the increase of nitrogen addition .

用介电损耗法测量了增感后乳剂的离子电导，同时用电子显微镜观察了硫杂冠醚化合物对AgBr乳剂颗粒形状的影响。

The ionic conductivity of the sensitized emulsion was measured using the dielectric loss method . The effect of thia-crown ether compounds on the shape of AgBr crystals were observed with electron microscope .

本文研究了有机过氧化物引发剂对低介电损耗的改性双马来酞亚胺树脂4501A固化反应的影响。

In this paper , effects of peroxide on curing reaction of modified BMI resin ( designed as 4501A ) with low dielectric loss were studied .

在1kHz，100~300K温区内，ε基本保持恒定，热稳定性好、介电损耗低。

At 1 kHz , in 100 ~ 300 K , the dielectric constant of this material almost remain unchanged and its dielectric loss is low .

甲基二苯乙炔基硅烷（MDPES）聚合后具有耐高温、低介电损耗等优异性能，但力学性能低。

Polymer of methyl-di-phenylacetylene-silane ( MDPES ) possesses excellent properties of high temperature-resistance , low dielectric dissipation fraction , etc , but its mechanical property is not significant for its poor bonding with glass-fiber .

采用标准陶瓷工艺，并进行湿压磁场成型和氧气氛烧结，制备了高取向度、低介电损耗的各向异性Ba（ZnTi）xFe12-2xO19多晶六角铁氧体。

Magnetic anisotropy polycrystalline Ba ( ZnTi ) x Fe 12-2 x O 19 hexaferrites have been prepared with high orientation degrees and low dielectric loss , by standard ceramic techniques with magnetic alignment of the grains c axes during wet pressing and in flowing oxygen sintering .