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二苯酮
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  diphenyl ketone
     In this paper, we study the method of synthesizing 4—hydroxy—4'—x—diphenyl ketone (x=H, CH_3, Br,, Cl, OH, OCH_3) x—substituted benzene is reacted with p-methoxy benzoic Chloride in the presence, of catalyze AlCl_3 to form target molecule.
     本文研究了4-羟基-4′-x-二苯酮的合成方法,其中x可为H、CH_3、Br、Cl、OH、CH_3O,反应采用三氯化铝催化,由对甲氧基苯甲酰氯与x-取代笨反应,一步得到目标分子。
短句来源
     A NEW SYNTHESIS OF 4—HYDROXY—4'—X—DIPHENYL KETONE
     4—羟基—4′—X—二苯酮的合成
短句来源
     Studies on Epoxy Resin/Montmorillonite Nanocomposites Cured with 4,4′-Diamino Diphenyl Ether Diphenyl Ketone
     4,4′-二氨基二苯醚二苯酮固化环氧树脂/粘土纳米复合材料的研究
短句来源
     Ultraviolet absorber UV-284 (2-hydroxy-4-methoxy diphenyl ketone 5 sulfonic acid)is obtained by synthesis from 2-hydroxy -4-methoxy diphenyl ketone,and its yellowing-resistant property on silks is investigated.
     以2-羟基-4-甲氧基二苯甲酮为原料,合成了2-羟基-4-甲氧基二苯酮5-磺酸,即紫外线吸收剂uv-284。
短句来源
     Poly(ether ether ketone)s containing the structure unit of naphthalene rings were prepared by the nucleophilic substitution reaction of 4,4'-difiuoro diphenyl ketone with p-bisphenol and 1,5-dihydroxy naphthalene using diphenyl sulfone(Ph2SO2) as solvent in the presence of anhydrous potassium carbonate(K2CO3) and sodium carbonate(Na2CO3) as catalysts.
     本文以4,4’-二氟二苯酮、对苯二酚、1,5-二羟基萘为单体,二苯基砜为溶剂,K_2CO_3和Na_2CO_3的混合物为催化剂,采用亲核缩聚反应合成了含萘聚醚醚酮,用DSC、TGA、X—光衍射等手段对合成的聚合物进行了表征。
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  “二苯酮”译为未确定词的双语例句
     Photoreduction of benzophenone (BP) derivatives characteristic of molecular selfaggregation (PKT) [p-C_6H_5COC_6H_4CH_2 N~+(CH_3)_2C_(12)H_(25)Br~-] and its physical behaviors have been studied.
     本文研究了一种具有分子自聚集作用的二苯酮(BP)衍生物ρ-C_6H_5COC_6H_4CH_2~+N(CH_3)_2C_(12).
短句来源
     Calculated based on 2,4'-difluorobenzophenone,the yield and purity of 1-(2-fluorophenyl)-1-(4-fluorophenyl) oxirane was 91.23% and 97.45% respectively.
     以2,4’-二氟二苯酮计,产品收率为91.23%,含量为97.45%。
短句来源
     Results: The linear ranges was between 0.05 and 0.6μg· mL -1 ,with the correlation coefficients of 0.9995.The average recovery was 99.2%( RSD =1.0%,n=6) .
     结果 :二苯酮在 0 .0 5~ 0 .6μg/mL范围内线性关系良好 ,加样回收率为 99.2 %(RSD =1.0 %,n =6)。
短句来源
     STUDY OF THE PHOTOSENSITIZED INITIATION SYSTEM CONTAINING OXYGEN
     含氧光敏引发体系的研究——Ⅵ.二苯酮/三乙胺体系引发光聚合过程中的再次引发效应
短句来源
     Through orthogonal experimental design,the optimum reaction conditions were determined: molar ratio of potassium hydroxide, methanol and 2,4'-difluorobenzophenone was 6∶1.25∶1,reaction temperature was 45℃.
     通过正交实验确定最佳工艺条件为:氢氧化钾、甲醇和2,4’-二氟二苯酮的物质的量比为6∶1.25∶1,反应温度45℃。
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  相似匹配句对
     2)The introduction and translation of T.
     ()T.
短句来源
     二.
     .
短句来源
     STUDY OF PHOTOSENSITIVE CROWN ETHERS CONTAINING BENZOPHENONE MOIETY
     含苯酮基光敏性冠醚的研究
短句来源
     A NEW SYNTHESIS OF 4—HYDROXY—4'—X—DIPHENYL KETONE
     4—羟基—4′—X—苯酮的合成
短句来源
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This paper presents the effect of different initiators and solvents on the anionic polymerization of tert-butyl-vinylketone. An amorphous polymer was obtained with softening point at 140-180° when the title monomer was polymerized with n-butyl lithium as anionic initiator in a homogenous phase with pyridine or tetrahydrofuran as solvent, while that in a heterogenous phase such as benzene, toluene, xylene or n-heptane it would give crystalline and probably isotactic polymer with melting point between 260-280℃....

This paper presents the effect of different initiators and solvents on the anionic polymerization of tert-butyl-vinylketone. An amorphous polymer was obtained with softening point at 140-180° when the title monomer was polymerized with n-butyl lithium as anionic initiator in a homogenous phase with pyridine or tetrahydrofuran as solvent, while that in a heterogenous phase such as benzene, toluene, xylene or n-heptane it would give crystalline and probably isotactic polymer with melting point between 260-280℃. The crystalline form showed the characteristic bands at 1100 cm-1 and 1330 cm-1, which were both absent in those of the amorphous form. A series of IR spectra were obtained from mixture of crystalline polymer with various amounts of amorphous form. It was found that bands of 1100cm-1, 1290cm-1, and 1330cm-1 would weaken gradually as the content of crystalline form dropped below 87%, and the spectra would be actually identical with those of the amorphous one of the crystalline part dropped below 14%. Alkali metals as Li, Na, K as well as their organometallic compounds as NaH, LiAlH4, RONa, ROK, RMgX and diphenylketone-Na were also able to initiate heterogenous polymerization.

本文报导了第三丁基乙烯基酮在不同溶剂中应用各种负离子引发剂的聚合研究。以正丁基锂为引发剂,吡啶或四氢呋喃为溶剂时,都是均相聚合,得到无定形聚合物,它们的软化温度为40—180°之间,如果以苯、甲苯、二甲苯或正庚烷为溶剂,则都是非均相聚合,得到结晶性聚合物,有着高达260—280°之间的熔点。上述结晶性与无定形聚第三丁基乙烯基酮的红外光谱有着显著的不同,结晶性聚合物具有特征的吸收峯,以1100厘米~(-1)与1330厘米~(_1)二处最为明显。还研究了不同比例的混合物的红外光谱,当结晶性聚合物含量降至 87%以下时,则 1100厘米~(-1) ,1290厘米~(-1)及 1330厘米~(-1)三处吸收峯逐渐减弱,当减少至13%时则与无定形聚合物的光谱一致。此外金属锂、钠与钾都能引发聚合第三丁基乙烯基酮,也试用了NaH,LiAlH_4,RONa,ROK,RMgX,二苯酮以及二苯酮钠等引发剂进行非均相聚合。

Kinetic studies were carried out on the polymerization of MMA photo-initiated by benzophenone/triethylamine/oxygen (BP/TBA/O2) system. Experimental results shown that the rate of polymerization is directly proportional to [BP]0.25 [TEA]0.25 [MMA] [O2] and [I0]0.5. Some deviation from this relationship has been found in case of too high concentrations of photosensitized initiation system. This may be attributed to the strong enhancing cage deactivation and extinction of the intermediate products. The accelerating...

Kinetic studies were carried out on the polymerization of MMA photo-initiated by benzophenone/triethylamine/oxygen (BP/TBA/O2) system. Experimental results shown that the rate of polymerization is directly proportional to [BP]0.25 [TEA]0.25 [MMA] [O2] and [I0]0.5. Some deviation from this relationship has been found in case of too high concentrations of photosensitized initiation system. This may be attributed to the strong enhancing cage deactivation and extinction of the intermediate products. The accelerating effect of oxygen in this system resulted an increase in the rate of polymerization to 1.4 times and a quantum yield to 4.4×102.

二苯酮(BP)/三乙胺(TEA)/氧体系光敏引发甲基丙炜酸甲酯聚合反应动力学进行了研究。实验结果表明: 、 R_p=K[BP]~(0.25)[TEA]~(0.25)[MMA][O_2][I_0]~(0.5) 当光敏引发体系的浓度较大时,上述动力学关系发生偏离,认为这是由于笼脱活效应和消光副产物剧增的缘故。体系中氧的加速作用使聚合速度提高1.4倍,量子效率达4.4×10~2。

The accelerating effect of oxygen in the benzophenone/triethylamine/oxygen (BP/ TEA/O2) system was studied. It is necessary to keep high concentration ratio of TEA/O2 in order to achieve the accelerating effect. Experimental results indicated that oxygen in the system through photooxygenation reaction transformed to peroxides. The rate of oxygenation depended on [BP] and [TEA]0.8. Subsequent photosensitized de-composotion of peroxides led to an increase in forming primary radicals. Prom the detennintd KP/Kt1/2...

The accelerating effect of oxygen in the benzophenone/triethylamine/oxygen (BP/ TEA/O2) system was studied. It is necessary to keep high concentration ratio of TEA/O2 in order to achieve the accelerating effect. Experimental results indicated that oxygen in the system through photooxygenation reaction transformed to peroxides. The rate of oxygenation depended on [BP] and [TEA]0.8. Subsequent photosensitized de-composotion of peroxides led to an increase in forming primary radicals. Prom the detennintd KP/Kt1/2 value it may be interpreted as the evidence of the primary radical termination. The kinetic orders related to photooxidation of oxygen have been determined and the corresponding reaction mechanisms are also discussed.

研究了二苯酮(BP)/三乙胺(TEA)/氧体系引发MMA聚合反应中氧的加速作用。体系中保持比较大的TEA/O_2浓度比值,是实现氧加速作用的必要条件。实验结果得出:系统中氧通过光氧化生成过氧化物的速度Vo_2=K[BP][TEA]~(0.8)。由于过氧化物的光敏分解,使初级自由基得到增殖。从测定的K_p/K_t~(1/2)值,说明存在初级自由基的终止作用。测定了光氧化动力学方程的数据并讨论了机理。

 
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