损耗模量
- 网络loss modulus;loss moduli
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改性剂还使PC的储能模量降低,损耗模量提高。
Moreover , the tensile strength and flexural strength did not decrease , and the storage modulus and loss modulus of PC increased .
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给出了平行于电场方向的储能模量G′和损耗模量G〃对电场和应变幅度的依赖关系。
The dependence of storage modulus G ′ and loss modulus G ″ parallel to external electric field on electric fields and strain amplitudes is presented .
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贮能模量G′和损耗模量G〃交汇点的位置随着破碎温度的升高而向低频区移动。
The positions of crossover point of storage moduli G ′ and loss moduli G ″ moved toward low frequencies with the increase of breaking temperature .
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结果显示:老化后储能模量减少,损耗模量和损耗因子tanδ总体呈增加趋势。
Result indicates storage modulus decreases after aging , but in a whole , loss modulus and tan δ increase .
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本文还利用基团贡献法对实测所得试样的损耗模量(E〃)&温度曲线下积分面积(LA)与理论计算值进行了比较,并初步讨论了影响材料阻尼性能的因素。
The loss areas ( LA ) of the samples were compared with the theoretical value calculated via group contribution method , and the results were discussed simply .
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SiO2使PLA链段运动受限,抑制了PLA分子链的松弛,使得复合材料的储能、损耗模量和粘度增加。
SiO2 limited the chain movement of PLA and resulted in the increase of the storage modulus , loss modulus and viscosity of PLA / POE / nano-SiO2 composites .
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在温度黏弹谱中,与纯PET相比PET/纳米TiO2复合体系的α转变提前,储能模量增加,低温下损耗模量也有所增加。
Compared with pure PET , the α transition of PET / nano-TiO_2 composites shifted to lower temperature , the storage modulus increased , and the loss modulus in low temperature region also increased .
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MWNT使得复合材料的软化温度提高,在软化温度附近,损耗模量和储能模量急剧下降。
When the temperature is near to softening temperature , the loss modulus and storage modulus drop drastically .
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CMC溶液呈现假塑性,溶液的粘度随剪切速率的升高而降低,溶液的储能模量G?和损耗模量G??都对频率有很强的依赖性。
CMC aqueous solution shows pseudoplastic behavior . The shear viscosity of CMC solution decreases with increasing the shear rate and the storage modulus G ' and loss modulus G '' are highly dependent on frequency .
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通过动态流变测试可知,添加少量的SiO2降低了体系的储能模量和粘度,有利于成形加工;而随着SiO2含量的增加,复合体系的储能模量、损耗模量和粘度都大幅度升高。
Dynamical rheology results showed a decrease of the storage modulus and viscosity of composites with low SiO2 content , but the storage modulus and viscosity increased sharply with the increasing of SiO2 content .
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室温下观察到ASC具有弹性(Solidlike)行为,储能模量G′在测量范围内轻微依赖频率,而损耗模量G〃和损耗角正切tanδ存在最小值。
Solid-like behavior for ASC was observed at room temperature . The storage shear modulus G ′ demonstrated a slight frequency dependence over the range measured , whereas the loss shear modulus G ″ and loss tangent δ showed a shallow minimum .
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实验表明,在小振幅的动态剪切流场下,EPDM材料的储能模量远大于其损耗模量,说明材料以弹性响应为主,表现为类固体行为。
The test results showed that the storing modulus of EPDM composites was far bigger than their loss modulus in dynamical shear flowing field of small vibration amplitude , elasticity is the main response .
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DMA分析表明,随着纤维尺寸的变大,材料的储能模量和损耗模量都增加,对材料的玻璃化转变温度没有影响。
Analysis of DMA showed that , with wood fiber larger , storage modulus and loss modulus of composites increased , change of size of wood fiber had no effect on glass transition temperature .
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结果表明,未表面处理纳米SiO2的填充体系,随着纳米SiO2填充量的增加,α松弛转变峰向低温方向移动,贮能模量E′及损耗模量E〃增加;
The results show that with the increasing of untreated nano-SiO_2 content , the storage modulus E ′ and loss modulus E ″ of LLDPE / nano-SiO_2 composites increase and the α transition peaks of the composites shift to lower temperature .
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实验表明聚氨酯预聚物中DMPA的质量分数增加,复合乳液粘度减小、储存模量增加,损耗模量在高剪切下增加;乳液粒子平均粒径减小;
With the increase of DMPA concentration emulsion viscosity decreased , storage modulus increased , loss modulus increased in higher shear rate and particle size decreased .
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本文采用流变学方法从剪切流变和拉伸流变两方面,通过对剪切粘度、储能模量和损耗模量、松弛时间谱和拉伸粘度的表征,对四种具有不同分子结构PET的熔体强度进行分析。
In this work , the melt strength and viscoelasticity of four types of PET was analyzed through characterization of shear rheology and extensional rheology of PETs , including the dynamic complex viscosity , storage and loss modulus , relaxation spectrum , and extensional viscosity .
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由流变实验测试表明,PLA/GMS/ACR共混物的弹性模量、损耗模量、及复合黏度均随着ACR的含量的增加而增大。
The DMA and rheology test indicated that the elastic modulus , loss modulus and the complex viscosity of PLA / GMS / ACR blends have the increasing trend with the increasing content of ACR .
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当频率在40rad/s下,枝化对PBS储能模量G′和损耗模量G〃的影响并不规律,但是当频率增大后,则随着枝化程度增大而减小。
When the frequency was under 40rad / s , effect of branching on both the storage modulus ( G ′) and loss modulus ( G ″) of PBS is randomly , but after that frequency , they all decreased with the increase of the degree of branching .
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利用改进的动态机械分析仪(DMA)对磁流变弹性体样品进行了不同磁场、不同频率的剪切储能模量、损耗模量和损耗因子的测量,实验结果验证了粘弹性模型的合理性。
By using the improvement dynamic mechanical analyzer , the magneto-induced shear storage modulus , loss modulus and loss gene of MRE sample are tested at different magnetic field and frequency and the experimental results implicate the rationality of viscoelasticity model .
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随着HGB含量的增大,HGB/TPU体系的复数粘度、储能模量和损耗模量逐渐增大,而损耗角正切则逐渐减小,这说明复合体系的弹性提高。
With the increase content of HGB content , the complex viscosity , storage modulus and loss modulus of HGB / TPU system were gradually increased , and the loss tangent was gradually reduced .
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结果表明:链端氨基、羟基化改性后,SIBR分子间作用增强,tanδ值、储能模量和损耗模量均有所增加;拉伸强度提高,表面亲水性能和表面粘接性能显著改善。
The results showed that amino , hydroxyl end-chain modified SIBR enhanced intermolecular interaction . Tan δ value , storage modulus , and loss modulus did not significantly increase . In contrast , tensile strength , surface hydrophilicity properties and surface adhesive properties were significantly improved .
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结果表明,分数导数Kelvin模型可以同时精确地拟合高分子材料的存储模量和损耗模量随频率变化的曲线,而且其形式简单、统一,在计算过程中需要调整的参数很少。
The analysis results show that the fractional Kelvin model could accurately simulate the curves of storage modulus and dissipation modulus of solid polymers , moreover , it has a simple and uniform form , only a few of the parameters should be adjusted in the calculation process .
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钛酸钙系电流变液在直流电场下损耗模量的研究
On the Loss Modulus of Ca_2TiO_3 Based ER Fluid in DC Field
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弱凝胶的弹性更强,在测试范围内弱凝胶的弹性模量总是大于损耗模量,显示出以弹性为主的特性。
In the range of testing , The elasticity modulus of weak gel is stronger than wastage modulus .
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两种类型聚合物溶液的损耗模量和储存模量差别不大。
No obvious difference exists between the energy-storage moduli and the loss moduli of both types of polymer solutions .
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在周期性变形的条件下,热量生成率函数被表示成了损耗模量及应变振幅的简单关系式。
The heat generation function is expressed as the simple function of loss modulus and strain amplitude for cyclic deformation .
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通过压痕实验可获得硬度、弹性模量、断裂韧性、存储模量和损耗模量、蠕变应力指数等。
With nanoindentation systems , quantitative data can be obtained : hardness , elastic modulus , fracture toughness , storage and loss modulus , stress exponent .
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频率扫描结果显示,在设定频率范围内,所有改性谷朊粉的储能模量和损耗模量随频率的变化趋势都与未改性谷朊粉相似,都是随着频率的升高而增大。
Frequency scanning results show that in setting frequency range , all modified gluten storing modulus and loss modulus on frequency change trend similar to unmodified gluten , which increased with increasing frequency .
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提出了一个磁流变弹性体的宏观粘弹性参数模型,计算了磁流变弹性体的磁致剪切模量、损耗模量和损耗因子。
A macroscopic viscoelasticity parameter model described the mechanical performance of MRE is proposed , the magneto-induced shear modulus , loss modulus and loss gene of MRE are calculated on the basis of above model .
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随着微珠重量百分比的增加,贮能模量和损耗模量均是非线性函数形式增大,而内耗则相反。根部能量的积累随放牧强度的提高而逐渐减少。
With a rise of the glass bead content Ф ( wt. % ), the stored energy modulus and the loss modulus increased as a form of non-linear function , and the damping was contrary .