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多重转变
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  multiple transitions
     THE MULTIPLE TRANSITIONS AND RELAXATIONS OF 1,2-POLYBUTADIENES
     1,2-聚丁二烯的多重转变和松弛
短句来源
     THE MULTIPLE TRANSITIONS IN PETROLEUM FERMENTATION NYLON-I
     PF尼龙材料Ⅰ号的固态多重转变
短句来源
     The multiple transitions including solvent evaporation, glass transition, secondary transition in glassy state and imidation reaction of pre-polymer in the TBA Spectra have been analyzed. The effect of solvent and water on imidation reaction has been observed and explained with the above viewpoint.
     对TBA谱中的溶剂蒸发,玻璃化转变、玻璃态中的次级转变,予聚物的亚胺化反应等多重转变进行了分析,解释了溶剂和水对亚胺化过程的影响。
短句来源
     The investigation on the multiple transitions and relaxations of 1,2-polybutadiene was carried out by dynamic mechanical, dielectric relaxation, and solid state NMR methods.
     本工作用动态力学、介电松弛和固态核磁共振等方法研究了1,2-聚丁二烯的多重转变和松弛。
短句来源
  multiple transition
     The compatibility, multiple transition and relaxation behaviour of PPS/PES blends and their composites reinforced by carbon fiber (CFPPS/PES) have been studied by internal friction analysis method. The experimental results show that: (1) there is interaction on a molecular-scale between PPS and PES in the blends and the blending ratio is the key factor to determine the degree of such interaction;
     本工作利用内耗测量方法研究了PPS/PES共混物及其碳纤维复合材料的相容性以及多重转变和松弛行为,结果表明:(1)PPS与PES存在分子运动水平上的相互作用,共混组份比是决定其相互作用程度的重要因素;
短句来源
     α-relaxation was a multiple transition process, while the strengthening of α 1 which represented the motion of the folded regions between microfibrillars or fibrillars in the fibre structure and the weakening of α 3 which represented the slip motions between microspherulite boundary layers or lamellas of laver shape in the spherulite structure, reflected the transformation of HDPE copolymer from spherulite to fibre structure after the drawing from the point of view of molecular motion.
     α松弛则是一个多重转变过程 ,代表球晶结构中的颗粒疆界或层状片晶之间滑移运动 α3的退化 ,以及代表纤维结构微原纤或原纤之间折叠区运动的 α1的强化 ,从分子运动的角度反映了共聚 HDPE经口模拉伸后由球晶结构向纤维结构的转变。
短句来源
  “多重转变”译为未确定词的双语例句
     The polymeric molecular motions of MMA-AN copolymer are studied by changes of the relative rigidity 1/p~2 and logarithmic decrement which change with temperature and time.
     作者通过相对刚度1/P~2和对数减量△随温度或时间的变化,来表征不同组分的MMA-AN共聚物的多重转变
短句来源
     The Morphological Structure and Multiphase Transitions of Segmented Polyesteramide
     共聚聚醚酯酰胺的多重转变及其相态结构
短句来源
     Torsional Braid Analyser(TBA) is an important analyser for testing molecular motion , many change , solidification and aging process of the high polymer materials.
     高分子材料动态力学谱仪是测试高分子材料的分子运动、多重转变、固化及老化过程的一种重要测试仪器。
短句来源
     In this paper, the double Tg of PET composited with mica are investigated by DMA, DSC, WAXD. The apparent activation energy values are obtined.
     本文用粘弹谱仪、x射线衍射、DSC研究了PET—云母复合物的Tg区域的多重转变等松驰转变行为,探讨了加工、云母填充对PET—云母材料性能影响的分子运动机理。
短句来源
     Torsional Braid Analysis is a kind of dynamic mechanical method.
     扭辫分析法是用于高聚物多重转变的一种动态力学的研究方法。
短句来源
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  multiple transitions
Avircator capable of generating high-power X-ray pulses due to the multiple transitions of electrons through a thin anode foil transparent to X radiation has been created and put into operation for the first time.
      
We also describe the multiple transitions that need to be taken into account in understanding the health changes among Pacificans.
      
The role of both sample preparation and multiple transitions monitoring is particularly addressed.
      
The use of multi-mode absorption spectroscopy (MUMAS) to detect multiple transitions in the A-band b1Σg+-X3Σg- of molecular oxygen is reported.
      
Some are highly stable while others on the fringes of this range are subject to multiple transitions that depend on the fluctuations of the flow.
      
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  multiple transition
These findings point to a multiple transition from a more linear climate system to a strong nonlinear system.
      
The model generates multiple transition growth paths depending on whether technological catch-up is achieved, and due to the endogeneity of the threshold gap, endogenous switching between development paths might be observed.
      
Multiple transition temperatures both above and below the bulk melting point were obtained from experiments and simulations, with good agreement between both series of results.
      
A rich phase behavior with multiple transition temperatures was observed for such systems.
      
Some of them have multiple transition due to inappropriate clustering results.
      
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The thermal imidation of fluorine-containing poly (amide-acid) has been investigated by Torsional Braid Analysis (TBA). The results are discussed in terms of the molecular motion of polymer segments above its glass transition temperature, which is favourable to the diffusion of small molecules and, therefore, has an effect on the imidation reaction.The glass transition temperature increased from 120℃ to about 310℃ with increasing rigidity of the polymer chain by imidation reaction. Hence a reasonable production...

The thermal imidation of fluorine-containing poly (amide-acid) has been investigated by Torsional Braid Analysis (TBA). The results are discussed in terms of the molecular motion of polymer segments above its glass transition temperature, which is favourable to the diffusion of small molecules and, therefore, has an effect on the imidation reaction.The glass transition temperature increased from 120℃ to about 310℃ with increasing rigidity of the polymer chain by imidation reaction. Hence a reasonable production process of step-up cure is suggested.The multiple transitions including solvent evaporation, glass transition, secondary transition in glassy state and imidation reaction of pre-polymer in the TBA Spectra have been analyzed.The effect of solvent and water on imidation reaction has been observed and explained with the above viewpoint.

用扭辫分析(TBA)研究了含氟聚酰胺酸的热亚胺化过程,用聚合物链段运动有利于小分子生成物的扩散,因而对缩合反应发生影响的观点,解释了剧烈的亚胺化反应总是在玻璃化温度以上发生;还观察到亚胺化反应使聚合物链刚性增加,玻璃化温度逐渐由120℃升高到310℃。因而提出了分段熟化的合理生产工艺。 对TBA谱中的溶剂蒸发,玻璃化转变、玻璃态中的次级转变,予聚物的亚胺化反应等多重转变进行了分析,解释了溶剂和水对亚胺化过程的影响。

This paper reports the studies of a new type of low-foamed polyester-polyure- thane by TMA, the and obtained data of six samples are listed. Their glass transition temperatures, Tg, are from -48 to -34℃; the melting temperatures of the crysta- llinity, Tm, from -15 to 38℃; the glass transition temperatures of the hard seg- ment, Tgh, from 21 to 93℃; the fluxing temperatures, Tf, from 148 to 172℃. The affection of heating rate, heated history and load to the result of TMA measurement is discussed.

用热机械分析研究了我所研制的新型低发泡聚酯聚氨酯材料。测定出六种样品的多重转变温度,玻璃化转变温度T_g为—48~34℃;结晶熔融温度Tm为—15~38℃;硬段玻璃化温度Tgh为21~93℃;软化点Tf为148~172℃。讨论了升温速率,热历史和负载对TMA测定结果的影响。

The multiple transitions in petroleum fermentation nylon-Ⅰ were studied. Four transitions in Solid state were determined by VES. The activation energy, the activation enthalpy, and the activation entropy of α, β and γ transitions were measured and calculated in terms of Starkweather's theory, respectively. The mechanism of molecular motion and β′ transition were discussed.

本文根据Starkweather用Arrhenius方程和绝对反应速度理论描述高聚物松驰过程的原理,用粘弹谱法测求了PF尼龙材料Ⅰ号固态多重转变的活化能、活化熵等参数,并讨论了多重转变的分子运动机理.

 
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