In this section , conclusions are made as follows : ( 1 ) with the increase of vgcf content , the cpe / pzt / vgcf composite represents insulator , semiconductor and conductor 通过对cpe / pzt / vgcf复合材料的导电性能和粘弹性能的研究发现： ( 1 )随着vgcf体积分数的增加， cpe / pzt / vgcf复合材料呈现由绝缘材料到半导体、导体材料的导电特性。
When vgcf volume content is low in cpe / pzt / vgcf composite , the existence of pzt can improve the vgcf distribution in cpe matrix , but the existence of pzt blocks the networks of vgcf when vgcf content is high ( 2 )通过对cpe / pzt / vgcf复合材料动态机械性能的测试结果表明， vgcf的体积分数当处于半导区时具有更为显著的压电导电减振作用效果。
The results indicate that the fiber radius , infiltration pressure , liquid metal viscosity coefficient and the volume fraction of perform affect the infiltration velocity of liquid metal and the infiltration process 对模拟结果分析研究表明，纤维半径、浸渗压力、液态金属粘度系数和纤维预制体的体积分数等影响液态金属的浸渗速度及浸渗过程。
A dilution of the cb volume fraction due to the thermal volumen expansion of the composites is estimated . if the cb volume fraction decrease to the percolation threshold , ptc effect of the composites occur 随着聚合物基体的热膨胀，无论是结晶聚合物基体或非晶聚合物基体体系，只要导电填料的体积分数被稀释到临界体积分数以下，复合材料就会产生ptc效应。
Polyurethane composites contained different content of alumina and silicon dioxide particles were prepared , and the alumina particle was processed with two kind of silane coupling agent which models were kh550 and kh560 论文分别制备了al _ 2o _ 3颗粒及白碳黑增强的聚氨酯复合材料，考查了填料种类、填料体积分数、偶联剂种类对聚氨酯复合材料力学性能及冲蚀磨损性能的影响。
The analysis of typical examples shows that the selectivity magnitude of iga can be increased from 3 . 17 to 422 with the aid of this method and consequently gas is detected accurately 以检测甲烷为例，在干扰气体乙烯的体积分数变化了7600 10 ^ ( - 6 )时，经神经网络融合处理后，分析器的选择性系数从3 . 17提高到422 ，主传感器输出的引用误差从58 %降为0 . 65 % ，实现了对甲烷的准确识别。
Effects of rhenium on and ' microstructure characteristic , partitioning behavior of the alloying elements and volume fraction of ' in high temperature single crystal ni base superalloys were investigated 通过对标准热处理后合金试样扫描电镜和透射电镜的观察、测量和分析，研究了铼含量对热处理合金、 '相尺寸、分布、体积分数以及合金元素在两相间的分配行为的影响。
Investigation of the piezoelectric performance for piezoelectric ceramic / polymer composites has been carried out . the results showed that different volume percent of piezoelectric ceramic influence the piezoelectric performance of composite system greatly 研究了压电陶瓷/聚合物复合材料的压电性能，发现不同压电陶瓷以及压电陶瓷的体积分数对复合体系的压电性能影响极大。
At the some time , the reaction between ti and al also is an exothermal reaction , so the inner energy is increased sharply which prompt al3ti to decompose and the diffusion rate of ti toward graphite particles and the decrease the inoculation tune 同时加镁后生成的tic颗粒的扩散速率增大，因而增大了tic颗粒的形核数，使生成的tic颗粒更加细小弥散，在复合材料中的所占体积分数增大。
With the increase of volume fraction of sic particles , the flow stress of composites increases . from the compare of the experiment result and the analysis result , the constitute equation of mmcs is given . the penetration experimental equipments and technologies are also introduced 随着sic颗粒的体积分数的增加，复合材料流动应力相应增加，并将实验结果与理论计算结果进行了比较分析，得到反映颗粒增强金属基复合材料性能的本构方程。
