查询词典 solubility

The introduction of fluorenyl cardo groups into the backbone of polyimides is an effective approach for improving solubility and thereby processability of polyimides without sacrificing thermal properties.

将芴基引入到聚酰亚胺主链，是赋予聚酰亚胺优异的溶解性而不降低其耐热性的有效途径。

Compared with homo-polymimdes and copolymimdes,PAIs can evidently improve mechanical properties while maintaining excellent solubility,high Tg and thermal stability of fluorenyl cardo polyimides.

与均聚PI，共聚PI相比，PAI在维持芴基Cardo型PI优异的溶解性，高的玻璃化转变温度及热稳定性的同时，明显改善力学性能。

The Cardo structure could increase the solubility and thermal stability of the resultant polyimide.

通过在聚酰亚胺的主链中引入庞大侧基（9，9-二苯基芴）形成轴状聚酰亚胺，同时提高聚酰亚胺的溶解性和热稳定性；庞大的侧基又能阻止链的堆砌，避免生色团荧光链间淬灭；通过加入第二种二酐单体合成三元缩聚型聚酰亚胺，调控荧光性二酐在聚酰亚胺中的含量，降低生色团在聚酰亚胺中的浓度，来避免生色团荧光浓度淬灭，增加聚酰亚胺的固态荧光量子效率；通过使用热稳定性好的稠环生色团苝和吖啶来避免共轭类生色团（如含双键或三键的生色团）在高温下热交联及氧和水的破坏。

The results show that the incorporation of noncoplanar structure led by the introducing alkyl substituents on fluorenyl cardo diamines improves the solubility of cardo polyimides in organic solvents without sacrificing thermal properties.

结果表明，通过在芴基Cardo二胺引入烷基取代基而形成非共平面结构能改善聚酰亚胺的溶解性，而不牺牲热性能。2。

The results show that the introduction of fluorenyt cardo groups can;a.evidently increase Tg;b.partly improve the solubility but the effect is not outstanding;c.not decrease thermal stability;d.not decrease mechanical properties when the molar content of cardo group is low.

结果表明Cardo结构的引入可以；a。明显提高Tg；b。部分改善溶解性，但效果不明显；c。不降低热稳定性；d。当Cardo基团的摩尔含量较低时，不降低力学性能。5。

All geothermal water samples show high concentration of F, Si, Sr and Fe.Concentration of Fe, Si, and Sr ions is mainly controlled by solubility of fluorite, quartz andchalcedony, and celestite, respectively.

其中，F离子浓度主要受控于萤石的溶解；硅含量主要受控于石英和玉髓矿物的溶解；锶离子浓度主要受控于天青石矿物的溶解。

The main reason for the difference of ceria solubility in two ceramics sintered from two kinds of powders is attributed to the different stabilizing mode.

稳定剂进入微结构方式的不同是两种工艺中CeO〓在晶粒中固溶量随晶粒尺寸变化出现差异的主要原因。

By react functional group in side chain, the solubility of polymers was improved and they can form film easily.

深入研究了这四种聚合物的氯仿溶液和TNT之间的荧光作用，它们对ppm的TNT都有很好的响应。

It is non-oxidizing, provides the necessary solubility, will not chelate metal ions, and has relatively low toxicity.

它不仅溶解度好，而且还是非氧化性的物质，不会螯合金属离子，毒性也相对较低。

The effects of temperature, pH, ionic strength and ionic variety on the nitrogen solubility of chickpea protein isolate were investigated, and those of pH and ionic strength on emulsifying capacity and emulsion stability were also studied.

研究各种外部条件如温度、pH、离子强度、离子种类对鹰嘴豆分离蛋白质溶解性的影响以及pH、离子强度对乳化能力及乳化稳定性的影响。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。