It is found that fiber optic attenuation is sensitive to composite cure monitoring in autoclave with good reliability which can indicate the gel point and the end point of the cure processing. 结果发现,光纤微弯衰减方法对于热压情况下复合材料的固化监测是敏感的。
Both gel point and pour point are widely used to evaluate lowest temperature of flowability for crude oil. 我国一直以凝点作为控制原油输送温度的一个重要参数,而国际上普遍采用倾点。
A hypothesis was presented that the specific heat of resin changed greatly at the gel point. 凝胶点后采用固化完全树脂的比热。
It is found that the shape-memory behavior and mechanism has great relationship with the content of DCP, the irradiation dose, the content of gel, the strain ratio, crystallinity and the average molecular weight between the cross-linkage point ( Mc). 研究了引发剂用量、辐照剂量、凝胶含量、拉伸比、结晶、共混物的组成比以及交联点间平均分子量等与材料的形状记忆行为及其机理的关系。
Below the gel point, single crystals could be obtained. 凝胶点以前,得到的是单晶体;
The results showed that sucrose and Ca2+ ion had apparent effect on the gel properties of this system. Addition of appropriate concentration of sucrose could not only increase the gel strength and water-holding ability of this system, but also raise its melting point. 结果表明:蔗糖、Ca2+对该体系的凝胶特性影响很大,适量蔗糖的添加不仅可增加体系的凝胶强度和持水性,还可增加凝胶的融点;
The results showed that 3, 6-AG content of the agar molecular was decreased and had a positive correlation with average export power of the microwave, the gel strength, melting point, solidifying point and viscosity of the agar were all decreased after the microwave irradiation. 结果表明,经微波辐照后,琼脂分子的3,6-AG含量呈下降趋势,基本上与平均输出功率呈正相关。琼脂的凝胶强度、熔点、凝固点和粘度均呈下降趋势。
Gel Point and Mechanism of Gel Formation in Copolymers from Free-Radical Crosslinking Polymerization of Vinyl/ Divinyl Monomers 自由基交联共聚合体系凝胶点和凝胶形成机理
A new theory about predicting the gel point 一种计算凝胶点理论
This paper summarizes the commonly used pour point and gel point determination standards and their testing principles. 对国际上几个主要的倾点测定规范和测试原理进行了详细地介绍,并将其与我国目前采用的凝点测定标准进行了对比。
In addition, the migration behavior and plugging capacity of the gel particle slug in cores on the channeling path were analyzed through plugging factor distribution and its dynamic rule measured in multi-point core simulation experiments. 根据多测点岩心模拟实验得到的封堵系数分布及其动态规律,分析了凝胶颗粒段塞在岩心中的运移特性及其对窜流通道的封堵能力。
This paper presents an improved percolation model, covering the main characteristics of free radical crosslinking copolymerization, and more exactly simulating the chemical gelation process, especially the appeared critical behavior around gel point. 该文提出一个改进的渗流模型,能把自由基交联共聚反应的主要特征包括进去,更真实地模拟化学凝胶化过程,特别是凝胶化点附近表现出来的临界行为。
The laboratory and commercial blending of some oil additives including gel inhibitor for gasoline and diesel, high effective scale inhibitor and antioxidant for gasoline, and pour point depressant for diesel in finished oils were described with effects of the above mentioned additives compared. 介绍了在石油产品调合时加入的几种油品添加剂小调试验和工业应用情况,油品添加剂包括汽油、柴油抗胶剂,汽油高效防垢抗氧剂,柴油降凝剂,并对油品添加应用效果进行了对比分析。
The performances of three kinds of gels were compared by the experiments of viscosity, gel intensity, syneresis rate, adhesive power, gel freezing point as well as melting point and so on. 进行黏度、凝胶强度、凝胶水析率、凝胶黏着力、凝胶凝固点及熔点测定等试验,以对比几种凝胶的性能。
Its molecular mass was measured by SDS-polyacrylamide gel electrophoresis ( SDS-PAGE) and native pore-gradient polyacrylamide gel electrophoresis respectively. Its isoelectric point ( pI) was determined by isoelectric focusing tube electrophoresis. 分别用SDS-聚丙烯酰胺凝胶电泳法(SDS-PAGE)及非变性孔径梯度聚丙烯酰胺凝胶电泳法测定其分子质量,用聚丙烯酰胺管状等电聚焦电泳法测其等电点。
The gel strength and melting point of the mixture decreased when the gelling temperature increased and gelling could not happen at temperature above 28 ℃. 随凝胶温度升高,体系凝胶强度显著下降,凝胶融点也下降;
Waxy crude oil has the property of viscoelasticity at low temperature ( near the gel point). 我国盛产含蜡原油,在低温(凝点温度附近)条件下,含蜡原油具有一定的粘弹性。
Gel-point of polyglycerol-adipate 甘油&己二酸聚酯的凝胶点
Simulation of gel point of polymer crosslinking reaction 高聚物交联反应的凝胶点模拟
Viscoelasticity of waxy crudes near gel point 凝点附近含蜡原油的粘弹性研究
In this part, we have testified the living polymerization character in this polymer system by dynamic analysis and investigated gel behaviors such as the critical gel point and the gel swelling degree. 在这一部分工作中,我们通过动力学分析发现聚合过程是具有活性的,此外,我们还对凝胶的凝胶点和凝胶溶胀度等性质进行了深入的研究分析。
Near the gel point, we analyzed the structure of infinite network, validated that it belonged to geometrical fractal, and performed a scaling analysis. 在凝胶点附近,我们专门分析了其中无穷大网络部分的结构,验证了其属于几何分形,并进行了标度分析。
On the other hand, the fractal structure of the infinite network near the gel point was investigated preliminarily by dynamic MC simulation. 最后初步考察了凝胶点附近无穷大网络的分形结构。
The viscosity drop phenomena near gel point was become conscious. This phenomenon was result in temperature and phase separation. 在实验中观察到了凝胶点附近的粘度下降现象,证明粘度下降现象是温度与反应过程的相分离的共同作用结果。
Phase separation occurred at the gel point and become more obviously in the process of gelation. 复合凝胶的相分离始于凝胶的起始点,并在凝胶过程中越来越明显。
The results showed that there was no significant effect of the addition of xylitol on the gel strength of the system, the gel point and melting point, the cohesive, elastic. 结果表明:木糖醇的添加量对体系的凝胶强度、凝胶点和熔化点、凝聚性、弹性均无显著影响。