vgcf中文是什么意思

• 气相生长碳纤维
• 气相生长炭纤维

• "vgcs voice groucall service" 中文翻译 :    话路群呼叫业务
• "vgc videotex gateway control" 中文翻译 :    可视图文网关控制
• "vgcs voice group call service" 中文翻译 :    话路群呼叫业务
• "vgc video graphics controller" 中文翻译 :    电视图像控制器
• "vgd" 中文翻译 :    门极不触发电压
• "vgc" 中文翻译 :    粘度比重常数
• "vgda" 中文翻译 :    卷组描述符区域
• "vga延伸" 中文翻译 :    vga extended
• "vgdf voicegrade data facility" 中文翻译 :    语音频段数据通信设备
• "vga端子" 中文翻译 :    vga connector

• The existence of pzt has bi - directional effects on the conductive circuit of vgcf , which leads to an evident semi - conducitve plateau area in the electrical conductive curve
  由于pzt的存在对vgcf导电网络的形成具有双重的作用，这反映到电导率随vgcf体积分数的变化曲线上，则是在半导区存在一个明显的半导区平台。
• 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。
• ( 2 ) the damping mechanism of multi - energy transitions takes effect when the vgcf content is among the semi - conductive area . when the vgcf content is low ( below 8 % ) , the vgcf conductive circuit does not form and the heat loss is quite little . when the vgcf content is higher than 20 % , the transition efficiency between electric energy and heat is limited
  这是由于当vgcf含量太少时(低于8 ) ，复合材料中导电网络还没有来得及形成，起不到能量损耗的目的；而当vgcf含量太高时(高于20 ) ，电导率太高，复合材料成为电的良导体，电能与热能之间的转换效率很低，能量损耗也不高。
• ( 4 ) only when the resistance r = l / c , the transition efficiency between electric energy and heat reach its maximum value , which makes it possible to design the high performance damping composites of multi - energy transitions by adjusting the vgcf content . cpe / zkf / vgcf composites : in the cpe / pzt / vgcf composites , the conversion efficiency from force to electricity is very low because of the obvious difference of rigidity between cpe and pzt , which leads to the damping effect of multi - energy transitions is not so evident as the viscoelasticity of the matrix cpe , especially during the cpe glass transition
  Cpe / zkf那gcf复合材料:针对cpe / pzt / vgcf复合材料中由于cpe和pzt之间模量差异较大，导致cpe和pzt之间的应力传递欠佳，影响力一电变换效率，从而压电导电减振作用效果并不十分显著的现象;本章中采用极性有机小分子双( 2一轻基- 3一环己基一5一甲基)一苯基]甲烷( zkf ) ，而不采用pzt ，消除了pzt与cpe模量方面差异的影响。
• This dissertation focuses on how to develop a high performance damping mechanism based on multi - energy transitions , which is independent or little dependant with the viscoelasticity of polymer matrix . three sections are mainly included in this dissertation as follows : chlorinated polyethylene ( cpe ) / piezoelectric ceramic ( pzt ) / vapor grown carbon fiber ( vgcf ) composites ; cpe / 2 , 2 ' - methylene - bis - ( 4 - methyl - 6 - cyclohexylphenol ) ( zkf ) / vgcf composites ; organic hybrids made from cpe and small molecules cpe / pzt / vgcf composites : the damping composites of multi - energy transitions mechanism were produced by mixing pzt and vgcf into cpe . in this system , the mechanical vibration energy that was transmitted to cpe was found to convert into joule ' s heat through conduction paths between vgcf in the polymer matrix , so the vibration fades away
  本论文主要包括三个方面的研究内容： ?氯化聚乙烯( cpe ) /压电陶瓷( pzt ) /气相生长碳纤维( vgcf )复合材料； ? cpe /双[ ( 2 -羟基- 3 -环己基- 5 -甲基) -苯基]甲烷( zkf ) / vgcf复合材料； ? cpe基有机小分子混杂型复合材料cpe / pzt / vgcf减振复合材料：利用压电和导电填料填充高聚物基体，当复合材料受到机械振动时，通过高聚物基体将机械振动能传递到压电陶瓷粒子上，利用压电陶瓷的压电效应，将机械能转换成电能，则电流在导电粒子产生的回路中流动，由于导电回路具有一定的电阻，所以电能又转变成热能耗散掉，从而起到减振的目的。
• The damping behavior of the multi - energy transitions mechanism is obvious only when the vgcf content is among semi - conductive area . ( 3 ) the cpe / pzt / vgcf composites can be presumed as a circuit composed of a resistance and a capacitor , which can successfully explain the phenomenon that multi - energy transitions mechanism takes effect only in the vgcf semi - conductive area
  博士论文:基于多重能量转换的高性能减振材料的研究( 3 )可以将cpe / pzt / vgcf复合材料设计成一个包含电阻和电容的等效回路，这样可以很好的解释在vgcf的半导区间内，复合材料具有较高的电导率时复合材料的压电导电减振作用更为明显。
• In this section , a small organic molecule is applied to instead of pzt with the purpose to avoid the rigidity difference between cpe and pzt . ( 1 ) there is no plateau area in the conductivity curve of cpe / pzt / vgcf composite , which is due to the molecular level blending of cpe and zkf in molten condition during the preparation of cpe / zkf / vgcf composites , further verifying that pzt is conducive to the formation of conductive loop
  通过对cpe / zkf / vgcf复合材料的分析探讨得出: ( 1 ) cpe / zkf脚gcf复合材料的导电曲线上并不存在类似cpe / pzt浑gcf复合材料的半导区平台，这是由于cpe亿kf / vgcf复合材料的制备是在cpe和zkf熔融的状态下的分子水平的共混，进一步证明了pzt对导电回路形成的双重作用;同时，由于zkf对vgcf的包覆作用，使cpe亿kf那gcf复合材料导电临界值较高。