力学损耗

用动态力学损耗温度谱作为测试手段，研究了非晶态PET膜片在78&112℃温度范围内的单轴拉伸。

The uni-axial stretching of amorphous poly ( ethylene terephthalate ) ( PET ) film has been studied in the temperature range of 78-112 ℃ by means of the temperature scanned dynamical mechanical loss curve of the stretched film .

老化21d后，上述各力学损耗量有一定上升，是由于试样出现了气泡的原因。

While aging time longer than 21 days , these " mechanical loss " are arose , due to formation of gas bubbles in propellant GS-1 .

在Tg填充橡胶中因其橡胶的有效体积减少，降低了它的力学损耗。

In the temperature range of Tg filled rubber decreased as the effective volume fraction of rubber in the filled rubber was decreased .

结果表明，随酚醛树脂用量增加，硫化胶硬度、100%定伸应力、动态弹性模量增加，而扯断伸长率、撕裂强度及动态力学损耗（tanδ）下降。

The results showed that hardness , 100 % modulus and dynamic elastic modulus increase with increasing of phenolic resin while break elongation , tear strength and loss tangent ( tan δ) decreasing .

用动态热机械分析法研究了固化参数、增塑剂含量、不同助剂对HTPB／TDI聚氨酯弹性体的动态力学损耗的影响。

The effects of curing ratio , plasticizer content and various auxiliary agents on the dynamic mechanical damping of HTPB polyurethane elastomer are investigated by dynamic thermal mechanical analysis ( DMA ) .

结果表明，当以TMP为交联剂时，交联程度的增加会导致TPU软、硬微区相容性的增强，从而使其Tg和力学损耗值都上升；

The TPU crosslinked by TMP exhibits a increase in glass transition temperature ( T_g ) and dynamic mechanical loss with increased crosslinking degree , which is attributed to the increased compatibility between hard and soft segments .

DMA研究表明，随PU或PUA橡胶相含量的增加，材料低温区的力学损耗峰逐渐向高温方向移动，相容性有一定改善；

DMA results reveal that the maximum value of the loss peak in low temperature region gradually shifts to higher temperature with increasing PU or PUA content . The compatibility between rubbery phases with PVC has been well improved to some extent .

由放热峰面积算出的结晶过程的热量与试样密度无单值的依赖关系，而线性地依赖于70℃时的力学损耗值tanδ，后者为试样中非晶区部分多少的量度。

The amount of heat calculated from the exothermal peak is not uniquely determined by the density of the sample , but is linearly dependent on tan 6 at 70 ℃, which can be used as a measure of the amount of amorphous state within a sample .

结果表明，在共混物中加入酚醛树脂后，仍只有两个动态力学损耗峰tanδ（分别对应着Tg1和Tg2）。

The results showed that there were only two dynamic loss ( tan δ ) peaks ( T g1 , T g2 ) for the NR / ENR blend with the addition of resin ;

随着增塑剂增加，拉伸外力功和力学损耗均增大。

With the increase of the plasticizer , extension work and mechanical loss became large .

研究结果表明：三元互穿聚合物网络力学损耗因子≥0.6的温度范围在28～75℃；

The result show that the mechanical loss factor tg δ≥ 0.6 of temperature rang : 28 ~ 75 ℃;

力学损耗峰温度随着含水率的增加向低温方向移动。

With the increase of moisture content , the loss peak temperatures of relaxation processes shifted to lower temperature range .

因此，除了因结构松弛造成的物理老化外，部分增塑剂的逐渐挥发是造成上述各力学损耗量随老化时间下降的又一主要原因。

Besides physical aging caused by structure relaxation , the main reason why all mechanical loss decrease with increase of aging time is gradual volatilization of partial plasticizer .

通过测定结晶速率和动态力学损耗的方法研究了接枝对聚丙烯的结晶行为和动态力学性质的影响。

The effect of grafting on the crystallization and dynamic mechanical properties of PP have also been investigated by the determination of the crystallization rate and dynamic mechanical loss .

不同干燥材之间以及干燥材与对照材之间的动态刚度性质、力学损耗峰温度、力学损耗峰强度以及力学松弛过程的表观活化能均存在明显差异。

Three kinds of dried wood and control wood differed in the dynamic stiffness properties , the loss peak temperatures , the loss peak density and the apparent activation energy of relaxation processes .

在测定四种TATB/氟聚物复合材料的力学损耗基础上，利用三相模型和A参数评估这四种复合材料界面。

Mechanical loss curves of four TATB / Fluoropolymer composites have been tested . On the basis of these experiments and in terms of three phased model , evaluation of interfaces of the four composites are made .

本文通过改进极端相对论性流体力学模型研究损耗过程对夸克&胶子等离子体（QGP）演化的影响，并导出和求解了包括损耗项的流体力学方程。

Influence of the dissipative processes to the evolution of QGP is studied in this paper by modifying the nltrarelativistic hydrodynamic model to include the dissipation .

本文测定了三种组成的PBT/PET共聚酯纤维Ⅰ、Ⅱ、Ⅲ的各项力学性能，动态力学损耗和染色性能，讨论了纤维性能与微观结构之间的关系。

The mechanical property , dynamic mechanical loss and dyeability of three PBT / PET copolyester . fiber I , II , ⅲ have been determined . The relationship between fiber property and microstructure has been studied .

对两种凝胶动态力学行为进行了分析讨论，PVA/H2O和PVA/DMSO/H2O的模量和力学损耗（tanδ）随温度升高有不同的转变行为。

Dynamic mechanical behaviors of the two kinds of PVA / H_2O and PVA / DMSO / H_2O were discussed . The two hydrogels showed different transition processes with temperature .

采用新的分析方法&动态力学分析法测试了不同老化时间的绝缘材料的老化特性，并且将动态力学参数与介质损耗参数作了比较；

In the period of aging , dynamic mechanical analysis was employed to investigate aging characteristics of insulation materials . Test results showed that the trend of dynamic mechanical properties was fairly consistent with that of dielectric dissipation .