查询词典 formaldehyde solution

The degraded effect of methal ion doped TiO2 to formaldehyde was prominent, but it was inapparent to VOCs.

掺杂金属离子对于甲醛的降解效果较为明显，对VOCs降解不明显。

The action of anti-dropping by adding line phenolic-formaldehyde resin into PE-IFR was studied. Configuration and structure of intumescent char was observed with SEM and the mechanism of anti-dropping was discussed.

考查了线型酚醛树脂对聚乙烯膨胀阻燃体系的防熔滴作用，并通过扫描电镜观察膨胀炭层的形态和结构，对线型酚醛树脂的防熔滴机理进行了探讨。

One route was that the amino-groups on the silica gel were transformed to tertiary amines by Eschweiler-clarke reaction that amine-groups react with formaldehyde and methanoic acid to prepare tertiary amines; the silica gel intermediates with tertiary amine groups reacted with chorohydrocarbons to prepare insoluble silica gel quaternary ammonium salt bactericides. Another route was that the amino-groups on the silica gel reacted with excessive chlorohexadecane; the preparing intermediates were quaternized with iodomethane to obtain insoluble silica gel quaternary ammonium salt bactericides.

一条路线是根据埃施韦勒-克拉克(Eschweiler-clarke)胺甲基化反应，进行胺基叔胺化反应，制成带有叔胺官能团的硅胶中间体，此中间体上的叔胺与卤代烷反应生成杀菌活性官能团季铵盐，制成硅胶类水不溶性季铵盐杀菌剂；另一条路线是带有胺反应活性中心的硅胶与过量正氯代十六烷反应，得到的中间体再用碘甲烷季铵化，得到最终产品——水不溶性季铵盐杀菌剂。

It is found that UIFR with softening point of 90℃, OH value of 32mg KOH/g andM of 377 g/mol is synthesized when molar ratio of isobutyraldehyde to formaldehyde is 1.5, molar ratio of aldehyde to urea is 6, vacuum distillation temperature and time is 140℃ and 1 h respectively. The terpolycondensate is soluble in most solvents, of paints and exhibits excellent yellowing-resistance.

结果表明，在异丁醛、甲醛摩尔比为1.5，醛、脲摩尔比为6，真空蒸馏温度为140℃、时间为1h的条件下，合成出的UIFR软化点为90℃，羟基值为32mgKOH/g，M为377g/mol，且树脂具有良好的溶解性和杭黄变性。

Several routes for synthesizing methyl isopropyl ketone were introduced, including the main methods based on isobutyl aldehyde-acetic acid, isobutyric acid -acetic acid, methyl ethyl ketone-formaldehyde and isoprene.

介绍了甲基异丙酮的多种合成路线，主要有异丁醛-乙酸法、异丁酸-乙酸法、甲基乙基酮-甲醛法和异戊二烯法。

Leading products are urea, ammonium bicarbonate, methanol, hydrogen peroxide, melamine, isopropylamine, formaldehyde, urotropine, and so on. 2005 sales revenue will reach 1 billion yuan, and profits and taxes will reach 82 million yuan.

主导产品有尿素、碳酸氢铵、甲醇、双氧水、三聚氰胺、异丙胺、甲醛、乌洛托品等。2005年销售收入将达到10亿元，实现利税将达到8200万元。

Results:There was no significant difference in mensuration between microwave disgestion-acetylacetone-formaldehyde spectrophotometry method and international standard Kjeldahl determination.

结果：微波消解-乙酰丙酮甲醛分光光度法与国标凯氏定氮法相比测定结果差异无显著性，该方法线性范围在5~100μg/10 m l，相关系数r=0.9997，检出限为0.546μg/10 m l，相对标准偏差为1.29%~2.21%，加标回收率

On curing, the -NCH〓OH groups of PNMA film would condense with each other to form a network of PNMA in which the PA molecular long chains were be"tightened"in bundles, or be confined in the meshes of the networks. 2. During the developing process of the low-temperature curable, non-formaldehyde PA latices, the monomers were chosen based on the organic/inorganic ratios, and the co-polymerization reactivity ratios. The effects of crosslinking monomer A and B were also compared.

从物质的有机性/无机性值，以及多元单体发生共聚的条件出发，通过比较交联单体A与B的性能，发现采用交联单体A的胶乳的性能良好，确定了一个由软、硬及交联单体A等多种单体组成的混合体系在阴/非离子组成的复合乳化体系中进行乳液聚合制备所要求的低温无甲醛PA胶乳的配方。

In my search for a nail polish with less toxins I came across Loreal Jet Set and Loreal Steel Color which do not contain formaldehyde, toluene or dibutyl phthalate.

我对含少量毒素的指甲油做了一项调查，在调查中我偶然发现了欧莱雅速丽指甲油和欧莱雅时尚珍藏指甲油，它们不含甲醛，毒素或邻苯二甲酸二丁酯。

A series of maleopimaric acid polyester amino resins were made from maleo￣pimaric acid polyesters crosslinked by etherified melamine formaldehyde resins.

以马来海松酸和线性小分子二醇为原料，合成马来海松酸聚酯多元醇，再用氨基树脂交联，制备马来海松酸聚酯氨基树脂。

We got alerted a couple of times while we were down south that HETs were on the way to bring us back up north because things were going to go hot again, but it was just rumors.

南下的途中我们不只一次得到警告说重型装备运输车将拉着我们重新北上，因为局势正在变得重新紧张起来，但这只是谣传。

It's the one where they find the ghost in the salt mine.

这一集是演他们在盐矿找到鬼