发烟

本工作以四氢呋喃为原料、发烟硫酸为催化剂合成了聚四甲撑二醇（PTMG）。

The synthesis of polyoxytetramethylene glycol ( PTMG ) from tetrahydrofuran was investigated , using fuming sulfuric acid as catalyst .

本工作以固体磺酸代替液体发烟硫酸作为催化剂，研究了温和条件下环己酮肟的液相Beckmann重排反应，考察了不同种类的固体磺酸催化体系。

In this work , we explored the liquid-phase Beckmann rearrangement of cyclohexanone oxime under mild condition by using solid sulfonic acid instead of liquid fuming sulfuric acid as catalysts .

C4钢制发烟硝酸吸收塔焊接工艺

Welding procedure of fuming nitric acid absorber made of c_4 steel

纳米SiO2对复合碳粉发烟剂性能的影响

Effect of Nano-SiO_2 on Performance of Complex Carbon Powder Smoke Composition

HC基新型抗红外发烟剂研究

New Type of Anti infrared Smoke Agent Based upon Halogenated Organic Compound

结果表明：润滑剂等可燃性加工助剂可使PVC燃烧时显著发烟；

The experimental result shows that inflammable process agent such as lubricants can make PVC smoke remarkably during inflaming ;

CVI反应器气体流动可视化发烟系统

A smoke generator for use in fluid flow visualization in CVI reactors

纳米Fe3O4的制备及其对发烟剂性能的影响

Preparation of Nano Fe _3O_4 and its Effect on the Performance of Smoke Composition

试验研究了添加纳米SiO2的复合碳粉发烟剂的分散和干扰性能。

Effects of nano-SiO_2 on the dispersibility and infrared interference performance of complex carbon powder smoke composition were studied .

加入无机阻燃剂可以抑制HIPS共混材料燃烧，明显降低发烟量；

The inorganic flame retardants could inhibit the burning of HIPS blending materials and significantly reduced the smoking volume .

通过FTIR光谱仪对所制备的发烟剂进行了燃烧实验，得出了烟幕及固体残渣的红外光谱图。

It got infrared spectrum of smoke and sol id remains through smoke agent prepared carrying on combustion experiment using FTIR spectrometer .

根据点污染源的微风扩散模式，利用VISUALBASIC编制了发烟剂大气污染物的浓度预测软件，用于计算污染物在下风向不同距离处的落地浓度，并对计算结果进行简单的评价分析。

Based on fine breeze model , atmosphere pollution prediction software is developed with Visual Basic to calculate the ground concentrations of smokes atmosphere pollutants at different downwind distances , and assess their impact upon the environment .

CaCO3不利于阻燃，但利于降烟，发烟时间也得到一定程度的推迟。

CaCO_3 is disadvantageous to the flame retardancy of flexible PVC , but it is of benefit to smoke suppression .

探索了用富碳有机物W作为发烟物的发烟剂配方，该配方对8-14μm的红外透过率可降到38%以下。

Smoke composition with rich carbon organic matter as the smoke generator was studied , infrared transmittance of this formula can be decreased below 38 % in spectral region of 8 ~ 14 μ m.

传统型卤化物/Sb2O3阻燃剂燃烧时发烟量大，产生大量腐蚀性和有毒气体，使其应用受到限制；

Because of the heavy smoke haze and the corrosive and toxic gases emitted from halide / Sb2O3 during its burning process , the application of this conventional flame-retardant was strictly restricted .

根据影响规律设计了新型发烟剂，其在远红外波段的遮蔽能力优于制式HC发烟剂。

On the basis of above regularities , a new smoke agent is prepared , which has better extinction capability than the ordinary one at far infrared wave-bond .

研究了以大庆馏分油为原料，以发烟硫酸为磺化剂制备天然石油磺酸盐（NPS）的工艺。

The preparation process of natural petroleum sulfonates ( NPS ) was studied making of Daqing distillate oil as feed stock and oleum as sulfonated agent .

对发烟硫酸浓度、发烟硝酸和DAP摩尔比、硝化温度、萃取方式等多个方面对反应的影响进行了研究。

The effect of Oleum concentration , Molar ratio of fuming nitric acid with DAP , nitrification temperature and extraction methods to the reaction were been studied .

结果表明，使用Sb－A复合阻燃剂后，软PVC的氧指数可达30.8，同时发烟量只相当于使用超细Sb2O3时的77%。

It showed that the limiting oxygen index ( LOI ) of plasticized PVC was as high as 30.8 , at the same time , the quantity of smoke was reduced to 77 % .

流场照片表明其发烟效果很好，能满足CVI反应器内气体流场的显示研究。

The flow field photographs demonstrate the effectiveness of the smoke generator , and the color , density and quantity of the smoke are very good for application to flow visualization studies for CVI reactors .

在此基础上优选了两种HC基的新型抗红外发烟剂，给出了相应的红外消光系数测定数据与傅立叶变换红外光谱。

On the basis of the experiments , two kinds of new and effective anti infrared smoke agents based upon HC were selected and the corresponding infrared extinction coefficients and the Fourier transform infrared spectra were listed .

以废聚苯乙烯（WPS）泡沫为原料，采用浓硫酸和发烟硫酸两种磺化方法制备性能良好的砼减水剂。

The PS water reducing agent , which is very effective for concrete , has been made from waste poly styrene ( WPS ) by sulfuric acid of fuming sulfuric acid sulfonation process .

60g可膨胀石墨发烟剂对3mm和8mm波单程最大衰减值均大于10dB，干扰时间约为20s。

The unilateralism maximum attenuation to 3 mm and 8 mm wave of 60 g expansive graphite are higher than 10 dB , the interference time is about 20 s.

以发烟硫酸-高氯酸为催化剂，通过四氢呋喃的阳离子开环聚合合成了窄分子量分布的聚四氢呋喃（PTHF）。

Polytetrahydrofuran ( PTHF ) with narrow molecular mass distribution was prepared by cationic ring-opening polymerization of tetrahydrofuran using H_2SO_4 · SO_3-HClO_4 system as a catalyst .

工业上用三氧化硫（SO3）与水反应制备硫酸，如果超越了饱合点则会形成发烟硫酸，可用于制备某些有机试剂。

It is made industrially by dissolving sulfur trioxide ( SO3 ) in water , sometimes beyond the saturation point to make oleum ( fuming sulfuric acid ), used to make certain organic chemicals .

通过实验测试，发烟剂质量浓度为9.1g，10.6μm激光透过率T可以降低到30%。

According to the test , for the mass of the smoke agent is 9.1g , the laser transmittance is decreased below 30 % in 10.6 μ m band .

在工艺条件为催化剂用量7·0mmol，反应温度473K，反应压力3·5MPa，反应时间3h和发烟硫酸中SO3含量50%时，甲烷转化率可达48·5%，目的产物甲醇收率为41·5%。

The maximum methane conversion of 48.5 % and methanol yield of 41.5 % were obtained under the conditions of 7.0 mmol catalyst , methane pressure of 3.5 MPa , reaction temperature of 473 K , reaction time of 3 h , and 50 % sulfur trioxide concentration .

结果表明：不同插层物质的可膨胀石墨对烟幕红外、毫米波衰减性能影响很大，其中，分别以CH3COOH、H2SO4、HNO3插层的可膨胀石墨制备的发烟剂衰减效果较好。

Results show that the expansible graphite of differently inserted substances has significant effect on the attenuation property of smoke to IR and MMW ; the attenuation effect of smoke composition prepared by expansible graphite which chooses CH_3COOH , H_2SO_4 and HNO_3 as inserted substances respectively is preferable .

本文按磺化反应原理设计了一套以十二烷基苯作为原料，以65%的发烟硫酸蒸发得到的SO3气体作为磺化剂的磺化反应实验装置，并对工艺条件进行了研究。

An experiment plant for sulfonation reaction was designed in this paper . In accordance with the principle of sulfonation , the dodecylbenzene was used as the material and SO 3 vaporized from 65 % fuming sulfuric acid as the sulfonating agent , and the art conditions were studied also .

爆炸分散型复合干扰发烟剂使用技术研究

Studies on the Application Techniques of Explosion-dispersed Composite Interfering Smoke Agents