凝胶时间

实验结果表明，加入活性单体E后，FBZ的凝胶时间缩短、活化能降低；

The gel time and activation energy of FBZ decrease after adding active monomer E.

而水含量的增加可以缩短凝胶时间，但对SiO2气凝胶完整性影响不大。

The increase of water content can shorten the gel time , but has little effect on the integrity of SiO2 aerogels .

pH值对酸性水玻璃灌浆材料凝胶时间的影响

Effects of pH Value on Gelation Time of Acidic Water Glass Grouting Materials

随pH值的增大，可见光透光率和体系凝胶时间出现极大值。

The visible light transmittance and the gelation time of the systems exhibit a maximum value as pH increases .

在NaCl浓度保持恒定时，凝胶时间tg随微凝胶含量的增加而减小。

At constant NaCl concentration , gelation time tg decreases with microgel concentration increasing .

随pH值的增大，可见光透过率降低，凝胶时间变化较为复杂；

PH has a complex effect on the gelation time . The visible light transmittance of the systems reduces when pH increases .

考察了凝胶时间、壳聚糖浓度及壳聚糖分子质量对固定化脂酶包埋率与活性的影响，确定了适宜pH值与批反应时间。

The effects of the gelation time , chitosan molecular weight , pH and batch reaction time on the hydrolysis activity were examined .

实验结果表明，加入油酸钠对PVA水凝胶的热性能有较大影响，PVA水凝胶体系的凝胶时间缩短、凝胶熔融温度升高；

Effects of sodium oleate on gelating time and melting temperature of PVA hydrogel were investigated .

PES制膜体系凝胶时间的研究

Studies on the gelation time of PES membrane-making systems

凝胶时间（140℃）结果表明共混树脂的交联反应速率比PAA明显趋缓；

The results of gelation time show that the blends have slower curing reaction rates than pure PAA .

通过选用粘度、凝胶时间及DSC分析等方法，从理论上制定了改性环氧树脂基体的固化制度。

And then the curing method of modified epoxy is theoretically proven by some techniques such as viscosity and gel time and DSC and so on .

本章主要讨论了这种酚醛树脂的合成条件，并用FT-IR对其表征，还研究了它的凝胶时间随温度的变化。

The synthesis conditions of the resol with dibenzyl ether bond are discussed in the first section and it is characterized by FT-IR and gel-time test .

研究结果表明：PEI的加入使树脂体系的凝胶时间延长，导致树脂熔液在低粘度时的温度范围缩小和粘度增大。

The results show that the addition of PET resin extends gel time , narrows temperature range at low viscosity of the melt resin system .

在反应物浓度一定的条件下，凝胶时间t-pH曲线成W型，随反应物浓度的降低，逐渐向U型曲线转变；

For the system with constant reactant concentrations , the relationship between gelation time and pH value showed a W shape curve , which changed gradually to U shape when the reactant concentration decreased continuously .

随着酸催化时间的增长，凝胶时间缩短，SiO2气凝胶完整性增加，孔径分布变窄且平均孔隙增大。

With the increase of acid-catalyzed time , gel time decrease , and the SiO2 aerogels have a higher integrity , narrower pore size distribution and lager pore size .

在制备纳米MgO过程中，溶剂用量、反应温度和柠檬酸用量对凝胶时间和晶粒都有不同程度的影响。

In the process of MgO preparation , the amount of solvent , reaction temperature and the amount of citric acid have varying effects on gel time and crystallite size .

采用树脂的粘度-温度曲线、凝胶时间-温度曲线、DSC法确定了树脂的固化工艺。

It has been reported in this paper that the curing process parameters of the resin were determined by the methods of the curves of viscosity-temperature and gel time-temperature as well DSC of the resin .

通过对体系的凝胶时间、粘度-温度曲线、DSC曲线的分析，确定了体系的固化工艺为120℃/1h+150℃/2h+175℃/3h；

The curing process is determined as being 120 ℃ / 1 h + 150 ℃ / 2 h + 175 ℃ / 3 h by analyzing the gel time , viscosity-temperature curve and DSC curve .

借助凝胶时间、DSC和TGA等测试研究了PN-PAA和MPN-PAA共混树脂的热固化过程和热分解过程。

The thermal curing and degradation of the blends of PN-PAA and MPN-PAA are studied via gelation , DSC and TGA techniques .

实验结果表明，AMPS共聚物交联体系的热稳定性主要由聚合物分子结构和交联剂种类决定，同时也受到温度的影响；AMPS共聚物交联体系的凝胶时间受温度和pH值因素影响明显。

The result shows that the thermal stability of AMPS copolymer mainly depends on the polymer structure and the kinds of the crosslinkers , and gelling time of the AMPS is sensitive to temperature and pH.

本文研究了JHF和JH型抗静电剂对RTM专用树脂粘度、凝胶时间及RTM成型FRP制品的体积电阻率和弯曲性能的影响。

The influence of JH and JHF on the viscosity and gel time of the resin in RTM as well as the volume resistivity and flexural properties of FRP are studied .

研究各种因素对溶胶的凝胶时间和粉体物理参数的影响，优化了合成的最佳配比以及工艺条件，并且在此基础上制备出掺杂改性的纳米TiO2。

Many different factors which have impacts on the gel time and the physical parameter of powder were studied , and also the best matching and reacting condition were determined , after that , the doping modified nano-TiO_2 were prepared successfully .

通过FT-IR光谱表征了丙烯酸酯改性的DCPD酚型环氧树脂/DDM体系结构，并通过测定改性体系的凝胶时间和分析凝胶时间的影响因素，研究了该体系的反应特性。

The structure of acrylate-modified DCPD-phenol epoxy resin / DDM system was characterized by FT-IR spectra . The reactivity of modified system was studied by determination of gelation time and analysis of effect conditions of gelation time .

通过对中温固化环氧树脂DSC、扭辫分析、凝胶时间、粘度、力学性能的测定，固化反应活化能的计算，研究了在贮存树脂的过程中环境湿度对树脂的固化反应和性能的影响。

Using middle temperature curing epoxy resin , it has been investigated that the effect of humidity to reisn curing and properties in resin storage by the test of DSC , TBA , gel time , viscosity and mechanical properties and the calculation of curing Ea .

本文对MFE环氧乙烯基酯（含MFE型和AFE型二种型号）树脂的固化性能（凝胶时间、放热峰和固化收缩率）作了报道并进行讨论。

The curing characteristics such as gel time , heat Peak and curing shrinkage rate of MFE epoxy vinyl ester resin ( MFE type and AFE type ) are discussed in this paper .

本课题首先从五个方面即不同的掺水量、硝酸含量、水解温度以及搅拌速度对凝胶时间的影响探讨了溶胶&凝胶法制备纳米TiO2的凝胶机理。

In this project , firstly , the gel mechanism of nano - TiO2 derived by sol-gel method was studied from the following five aspects : the effect of different H2O content , nitric acid content , hydrolysis temperature and stir speed to gel time .

采用FT-IR光谱研究了氢化萜烯马来酸酐（HTMA）与双酚A型环氧树脂的固化反应过程，并分析了固化度、凝胶时间及其主要影响因素。

The curing reaction of hydrogenated terpinene maleic anhydride ( HTMA ) with bisphenol A epoxy resin was investigated by FT-IR spectrum , and the curing degree , gelation time and its affecting factors were analyzed .

首先，采用SPI法和差示扫描量热法（DSC）研究了引发剂、低收缩树脂（LPA）对凝胶时间、固化时间、放热峰温度的影响，并从动力学角度分析了固化反应特性。

Firstly , the effects of initiators and LPA on the gel time , curing time and peak temperatures in the curing reaction of UPR were studied by SPI method and differential scanning calorimetry ( DSC ), and the curing characteristics were analyzed in kinetics angle .

结果表明：随着TMOS用量、反应温度和前驱体浓度的增大，水解缩聚体系凝胶时间缩短，可见光透光率降低；

The results show that the gelation time and visible light transmittance of the above-mentioned systems decrease as the TMOS content , reaction temperature and the density of precursors increase .

对大体积混凝土裂缝和接缝中进行AM9和超细水泥浆液注浆进行研究，分析了浆液的凝胶时间，并应用于回龙大坝坝体裂缝的处理，取得了良好的处理效果。

This paper investigates the grouting of AM 9 and microcement into joints and cracks of mass concrete , studies solidifying time of the grout and applies the achievements in science to the practice of the grouting project .