氮气保护

以60Coγ射线为辐射源，在氮气保护下对聚丙烯（PP）纤维和苯乙烯-二乙烯苯在甲醇介质中进行共辐射接枝。

The grafting copolymerization of styrene-divinylbenzene onto polypropylene fiber was studied by 60Co γ - ray co-irradiation in methanol medium and nitrogen protection .

综合从耐蚀性、电化学保护的角度来看，304（氮气保护）喷涂层、316L喷涂层都表现出与无机富锌硅酸盐涂层有良好的匹配性。

Integrated from the corrosion resistance , electrochemical protection , 304 ( nitrogen protection ) spray coating or 316L spray coating have shown good matching with inorganic zinc silicate coating .

氮气保护在PP熔体流动速率测试中的作用

Function of N_2 atmosphere in test of melt flow rate of PP

M2高速钢脉冲放电强化的氮气保护与增强作用

Protection and Enhancement Effects of N_2 on Pulse Discharge Strengthening of High Speed Steel M2

用油加热和氮气保护技术研制Te红外光学玻璃纤维初探

The development of TeX infrared glass optic fibres by means of oil heating and nitrogen gas protecting technique

主要的工艺参数和研究结论如下：采用KOH催化、氮气保护、回流聚合方法制备三聚甘油。

The main process parameters and conclusions were as follows : Tripolyglycerol was prepared through catalyzing by KOH and protecting by nitrogen .

研究了在氮气保护下，紫外光照射，以二苯甲酮（BP）为光引发剂，丙烯酰胺（AAM）在聚酯（PET）薄膜表面的气相接枝聚合。

Grafting polymerization of acrylamide ( AAM ) was performed onto the surface of a PET film under ultra violet light irradiation with benzophenone ( BP ) as photo initiator after removing oxygen with nitrogen .

通过在氮气保护下热分解固相合成的MnC2O4及掺杂Bi的MnC2O4，分别制备了MnO及改性的BiMnO。

MnO and Bi doped MnO were prepared under nitrogen atmosphere by thermal decomposition of MnC 2O 4 and Bi doped MnC 2O 4 synthesized by solid state reaction respectively .

氮气保护对Sn-Cu-Ni-Ce无铅钎料润湿性的影响

Effects of N_2 protection on wettability of Sn-Cu-Ni-Ce lead-free solder

基于锂电池正极材料烧结曲线和工艺参数等特点，提出应用可编程逻辑控制器（PLC）对氮气保护推板炉的温度、气氛和循环动作实现自动控制。

Based on the characteristics of the sinter curve and technique process of positive pole material in lithium battery , the application of programmable logic controller is proposed to implement automatic control for temperature , atmosphere and circulation of nitrogen-protected push type kilns .

通过比较在有、无氮气保护的情况下聚丙烯（PP）熔体质量流动速率和熔体体积流动速率测试值的不同，探讨了PP熔体流动速率测试过程中氮气保护的作用。

This paper probed into the function of N2 atmosphere in the process of measuring melt flow rate of polypropylene ( PP ) via comparison of the melt mass-flow rate and the melt volume-flow rate of PP tested with and without N2 protection .

结果表明，采用氮气保护再流焊工艺得到的PBGA组装板的最大弯曲试验载荷和冲击功比采用压缩空气对流再流焊工艺的组装板要高。

The results show that the maximum impact force and the impact energy for PBGA assemblies reflowed in nitrogen ambient is higher than those reflowed in compressed air .

对无铅焊接技术应用中的无铅焊料选择、元器件选定、印制电路板（PCB）应用设计、再流焊温度曲线改善、氮气保护再流焊、工艺控制与优化等进行了具体分析和研究。

Some influencing factors of application of lead-free soldering technology are investigated , such as choice of lead-free solder and components , application design of PCB , improvement of reflow soldering temperature curve , reflow soldering by nitrogen protection , optimization of technology .

在氮气保护下，以蓖麻油、二乙醇胺和硼酸为基本原料，合成了蓖麻油烷醇酰胺硼酸酯（RAB）。

Under the protection of nitrogen , the ricinoleic alkyl alcohol amide borate ( RAB ) was synthesized with castor oil , diethanolamine and boric acid as raw materials .

此外，还采取了一些改进措施，如：熔盐换热器重新施焊，更换烟气预热器玻璃管，氮气保护熔盐等，保证WSA制酸系统稳定运行。

Some other measures were taken to guarantee stable operation of WSA , such as re-welding molten salt heat exchanger , replacing glass tubes of off-gas pre-heater and protecting molten salt with nitrogen .

在氮气保护条件下合成了三配位配合物[~n-Bu4N][Hg（PhSe）3]，并用X射线单晶衍射分析、红外光谱、~1H-NMR谱和差热热重分析进行了表征。

Three-coordinated complex of [ ~ n-Bu4N ] [ Hg ( PhSe ) _3 ] was obtained under nitrogen atmosphere and characterized by X-ray crystal structure analysis , IR spectra , H-NMR spectra and TG-DTA technique .

而对于CdS-TiO2复合薄膜，当CdS／TiO2（摩尔比）为2.5%镀膜层数为3，在氮气保护下，通过480℃热处理，保温1h，得到的薄膜光催化性能最好。

However , the suitable parameters for CdS-TiO2 compound thin films were described as following : compounded quantity of CdS in TiO2 was 5 % ( the mol ration ), coating number was 3 , heating treatment was under N2 atmosphere , 480 C , 1h .

结果表明在室温、氮气保护，剂油比为0.15、反应时间为60min的条件下，六氟磷酸离子液体对精制柴油中噻吩脱除率可达到70%。

The results showed that the ionic liquid can effectively lower the sulfur content of diesel with thiophene under nitrogen protection and the conditions which were as follows : the ratio of agent to oil 0.15 , and the reaction time 60 min.

研究了Baylis-Hillman加成物的乙酸酯在金属钐和催化量碘的作用下的还原反应，该反应不需氮气保护，且有大规模制备的潜在优势。

In part two we also made detailed study on the reduction of Baylis-Hillman acetates by the direct use of metallic samarium and catalytic amount of iodides . It was found that the transformation could proceed without the protection of nitrogen atmosphere and have potential for large-scale preparation .

机载电子设备铝合金箱体氮气保护钎焊工艺

Furnace Brazing Technique of Aluminium-alloy Case for Airborne Electronics in Nitrogen Atmosphere

特别配有氮气保护腔，用于评价氮气保护条件对可焊性的影响。

Specially including nitrogen chamber to evaluate the effect of nitrogen protection on solderability .

氮气保护和正压通风法简述

Brief Description of Nitrogen Protection and Pressurized Ventilation

此外，在氮气保护条件下，反应液中也得到了溴代环己烷产物。

Besides , the radical reaction product cyclohexyl bromide was found under the N2 atmosphere .

无铅化电子组装中的氮气保护

N_2 Protection in Lead-free Electronic Assembly

氮气保护焊缝装置

Nitrogen-gas Protector for Welding Seam

酸性水罐氮气保护防止硫化亚铁自燃事故的设计分析

Design and Analysis of Sour Water Tank With Nitrogen Protection for Preventing Self - ignition of Iron Sulfite

结果表明有无氮气保护对最终产物无明显影响；

The results showed that there were not clearer effects on the end product under N2 protection or not .

在氮气保护下，用乙醇还原时制备的催化剂具有较高的催化活性；

When the catalyst is reduced with ethanol under nitrogen flow its activity for hydrogenation of nitrobenzene is high .

本文详细研究了无氮气保护下胶体铜催化剂的制备条件。

This paper studies the optimal reaction conditions for the preparation of colloidal copper catalysts without protection of N_2 .

实验的结果表明：在氮气保护下，碳纤维的高温表面处理效果较好。

The better result was obtained by the high temperature surface treatment of carbon fiber under the atmosphere of nitrogen .