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己内酰胺     
相关语句
  caprolactam
     Research on Treatment of Caprolactam Wastewater with A/O_1/O_2 System
     利用A/O_1/O_2系统处理己内酰胺废水的研究
短句来源
     The relative standard deviation (n=11) was 2.1% for 4.0×10~(-7) (g/mL) caprolactam and the detection limit was 1×10~(-7) (g/mL).
     对4.0×10-7g/mL的己内酰胺溶液进行11次连续测定,相对标准偏差为2.1%。
短句来源
     INFLUENCE OF PREPARATION METHODS OF TiO_2-ZrO_2 ON CONVERSION OF CYCLOHEXANONE OXIME TO CAPROLACTAM OVER B_2O_3/TiO_2-ZrO_2 CATALYST
     制备方法对B_2O_3/TiO_2-ZrO_2催化环己酮肟制己内酰胺的影响
短句来源
     The system showed a linear range of 4.0×10~(-7)~1.0×10~(-5) (g/mL) for caprolactam.
     己内酰胺的质量浓度在4.0×10-7~1.0×10-5g/mL范围内与化学发光分析信号呈线性关系,其检出限为1×10-7g/mL。
短句来源
     Yield of 1-aza-2-methoxy-1-cyccloheptene reached 72.3% when the molar ratio of caprolactam to dimethylsulfate was 1∶1 and reacted at 80℃ for 2 h.
     结果表明:当反应物n(己内酰胺)∶n(硫酸二甲酯)=1∶1时,80℃反应2h,反应生成1-氮杂-2-甲氧基-1-环庚烯己内酰胺的收率72.3%。
短句来源
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  hexanolactam
     The catalyst was prepared by the reaction synthesis of NaAlH_2(OCH_2CH_2OCH_3)_2, formed from Na, Al and CH_3OCH_2CH_2OH by H_2 reduction at 50.66 MPa and 100℃ ,and hexanolactam.
     该催化剂是由Na、Al和CH_3OCH_2CH_2OH在50.66 MPa、100℃下用H_2还原生成的NaAlH_2(OCH_2CH_2OCH_3)_2与己内酰胺反应合成的。
短句来源
     Application of Pt/Rh knitting net catalyst for ammonia oxidation in production equipment of hexanolactam
     Pt/Rh针织网氨氧化催化剂在己内酰胺生产装置中的应用
短句来源
     Setup and Supervision on Quality Control Point in Hexanolactam Project
     己内酰胺工程项目质量控制点的设置及监理
短句来源
     The corrosion behavior and protective methods of three typical stainless steel heat exchangers in hexanolactam apparatus were studied in this paper.
     本文以己内酰胺装置中不锈钢换热器为研究背景,运用不锈钢腐蚀研究理论及成果对三台典型的不锈钢换热设备的失效形式进行了腐蚀分析与对策研究。
短句来源
     The hexanolactam recovery methods are introduced in this paper It also provides a new way for utilizing polycaprolactam,having advantages of simple technology、high hexanolactam yield and purity The new method possess good economy and environment advantages
     本文介绍了己内酰胺化学回收的几种方法,提供了聚己内酰胺化学再生利用的新途径,且生产方法具有工艺简单、己内酰胺产率及纯度高的特点,具有较好的经济效益和环境效益。
更多       
  ε-caprolactam
     B2O3/SiO2-HTiNbO5 is much more active and selective for the rearrangement than SiO2-HTiNbO5.B2O3/SiO2-HTiNbO5 with 7.32% B2O3 shows excellent catalytic activity. Cyclohexanone oxime conversion and ε-caprolactam selectivity keep more than 97.0% and 98.0% respectively after reaction for 400min.
     B2O3/SiO2-HTiNbO5催化剂的活性和选择性明显地优于SiO2-HTiNbO5,当B2O3负载量为7.32%时,环己酮肟转化率维持在97.0%以上的时间达400min以上,己内酰胺选择性大于98.0%。
短句来源
     The effects of preparation methods of TiO 2-ZrO 2 on catalytic performance of B 2O 3/TiO 2-ZrO 2 for vapor-phase Beckmann rearrangement of cyclohexanone oxime to ε-caprolactam were investigated.
     考察了载体TiO2 ZrO2 的制备方法对B2 O3 /TiO2 ZrO2 催化环己酮肟气相Beckmann重排制己内酰胺反应性能的影响。
短句来源
     At above conditions, the conversion of cyclohexanone oxime, the selectivity of ε-caprolactam and the TON of PCl 5 could reach 99.72%, 98.90% and 5.14 respectively.
     在此条件下 ,环己酮肟转化率达 99.72 % ,己内酰胺选择性达 98.90 % ,PCl5的催化转化数达 5 .14。
短句来源
     Spothesis of ε-Caprolactam
     ε-己内酰胺合成法
短句来源
     1. FTIR results showed that there are hydrogen bonding interaction between PES-C & ε-caprolactam, PES-C & sodium salt of ε -caprolactam, PES-C & MC nylon system.
     1.FTIR研究表明PES-C与己内酰胺己内酰胺钠、MC尼龙间存在氢键相互作用;
短句来源
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  e-caprolactam
     At the same time, the conversation of cyclohexanone oxime could reach 98.96%, the selectivity of e-caprolactam could reach 87.30% and the TON of PCl3 could reach 2.88. Most of the e-caprolactam (>90%) existed in the ionic liquid phase.
     此时,环己酮肟转化率达98.96%,生成己内酰胺的选择性达87.30%,PCl3催化转化数达2.88.生成的大部分己内酰胺在离子液体相.
短句来源
     The Beckmann rearrangement of cyclohexanone oxime was effectively realized to prepare e-caprolactam by using phosphorous trichloride (PCl3) as catalyst in a two-phase system composed of 1-n-butyl-3- methylimidazolium tetrafluoroborate ([bmim][BF4]) ionic liquids and toluene.
     在1丁基3甲基咪唑四氟硼酸盐([bmim][BF4])与甲苯组成的两相体系中,以三氯化磷(PCl3)为催化剂,实现了由环己酮肟制备己内酰胺的液相贝克曼重排反应,两相体系有利于反应控制和体系取热.
短句来源
     LC-H2O-SA-C6H6 system at pH value of 2 and 6. The results show that better recovery of caprolactam could be obtained in the following conditions: higher temperature in the range of 20~40℃, higher pH value in the range of 2-6, and addition of (NH4)2SO4 in the water solution containing e -caprolactam.
     测定结果表明,在20~40℃范围内,温度升高对己内酰胺萃取回收有利; 在pH=2~6范围内,pH升高对己内酰胺萃取回收有利;
短句来源
     It is of great synthetic and industrial interestfor partial hydrogenation of benzene to cyclohexene, by which the procedureof e -caprolactam and adipic acid is shortened.
     选择合适的催化剂和反应条件,利用苯选择加氢制环己烯,可以极大地缩短ε-己内酰胺和己二酸的生产工艺路线,具有重要的工业应用价值和巨大的工业生产潜力。
短句来源
     The interaction between PPES & e-caprolactam , PPES & s-caprolactam-NaOH were studied in detail.
     1.PPES与己内酰胺己内酰胺钠之间均存在氢键作用; PPES与己内酰胺钠的氢键作用大于PPES与己内酰胺的氢键作用。
短句来源
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      caprolactam
    The Effect of the ε-Caprolactam Concentration on the Electrodeposition of Nickel-Polymer Coatings
          
    It is shown that an increase in ε-caprolactam concentration in sulfate nickel-plating baths enhances its adsorption on Ni cathode, which is followed by the formation of its complexes with nickel ions in the solution.
          
    In the interval of the maximum deceleration of the process, nickel-polymer coatings with the greatest content of ε-caprolactam and the highest surface conductivity, substantially exceeding that of pure metal, are formed.
          
    Influence of the Anion Nature and the Metal-to-Additive Ratio on the Effectiveness of ε-Caprolactam during Cadmium Electrodeposi
          
    The rate and mechanism of cadmium(II) electroreduction from electrolytes containing ε-caprolactam were found to significantly depend on the metal-to-additive ratio.
          
    更多          
      ε-caprolactam
    The Effect of the ε-Caprolactam Concentration on the Electrodeposition of Nickel-Polymer Coatings
          
    It is shown that an increase in ε-caprolactam concentration in sulfate nickel-plating baths enhances its adsorption on Ni cathode, which is followed by the formation of its complexes with nickel ions in the solution.
          
    In the interval of the maximum deceleration of the process, nickel-polymer coatings with the greatest content of ε-caprolactam and the highest surface conductivity, substantially exceeding that of pure metal, are formed.
          
    Influence of the Anion Nature and the Metal-to-Additive Ratio on the Effectiveness of ε-Caprolactam during Cadmium Electrodeposi
          
    The rate and mechanism of cadmium(II) electroreduction from electrolytes containing ε-caprolactam were found to significantly depend on the metal-to-additive ratio.
          
    更多          
      e-caprolactam
    Glasumwandlung, Schmelzen und Kristallisation der Copolymerisate von ω-Dodeeanlactam und e-Caprolactam.
          
    A novel catalyst, boria supported on titania-zirconia mixed oxide, exhibits very high catalytic activity and selectivity in vapor-phase Beckmann rearrangement of cyclohexanone oxime to e-caprolactam.
          
    About 90% of e-caprolactam world-wide is produced by using the above-mentioned conventional cyclohexanone process.
          
    Illustrated are the intraand intermolecular routes that generate e-caprolactam and larger cyclics.
          


    ~~

    本文报告己内醯胺证聚合进程中各阶段形成的聚合物及其分子量分布的变化。己内酰胺的聚合是用6-氨基己酸为引发剂在封管中氮气存在下230°加热进行的。将不同聚合时间(0.5,1.5,3,7,9,15,100小时)所得的聚合物,经苯及水抽提后,在苯酚-甲醇系统进行分级,各级分分别用端基滴定法测定其分子量,作出累积重量分布曲线和微分分子数分布曲线。结果显示,各个试样所得的分布曲线均有一较狭窄的高峯,此高峯随着聚合时间的增加而逐渐向分子量较高的方向移动,反应至最后时高峯又向分子量较低的方向移回,并与数均分子量相重合。在九小时以前各试样的分布曲线,除有一狱窄高峯外尚有一分子量较低的宽广部分。这一部分也是随着反应进程向分子量增高的方向移动,而在九小时以后渐趋消失。从各级分计算的重均分子量和数均分子量也随着反应的进程逐渐接近,分散系数趋近于1。这些结果使作者等以前所建议的己内醯胺聚合反应机构进一步获得证明。

    Vinyl copolymers containing glycidyl methacrylate as one component are thermal reactive. They are valuable in preparing thermosetting and graft copolymers.When glycidyl methacrylate, methyl methacrylate, and methacrylic acid were copoly-merized, a linear copolymer was formed at first, which, on further heating at higher temperatures, was transformed into a crosslinked polymer. It was shown by IR spectro-scopy that intermolecular reaction of epoxy group and carboxyl group has taken place at the higher temperatures....

    Vinyl copolymers containing glycidyl methacrylate as one component are thermal reactive. They are valuable in preparing thermosetting and graft copolymers.When glycidyl methacrylate, methyl methacrylate, and methacrylic acid were copoly-merized, a linear copolymer was formed at first, which, on further heating at higher temperatures, was transformed into a crosslinked polymer. It was shown by IR spectro-scopy that intermolecular reaction of epoxy group and carboxyl group has taken place at the higher temperatures. Crosslinking of the copolymer chains raised the glass temperature appreciably.By heating the glycidyl methacrylate-methyl methacrylate copolymer with polycapro-lactam in benzyl alcohol solution, a graft copolymer was obtained. This graft copolymer, after being dried, could not be dissolved in most solvents including benzyl alcohol and m-cresol at room temperature, except the very polar ones, such as 98% formic acid. This abnormal behaviour was ascribed to the formation of H-bonds between molecular chains.Viscosities of both the back-bone copolymer and the graft copolymer in benzyl alcohol and in m-cresol were determined. It was shown that the Huggins constant k' increases owing to grafting in the case of m-cresol solution, but not in the case of benzyl alcohol solution. Therefore, the effect of grafting on the solution viscosity is not always the same as branching, because of the nature of the backbone and that of the graft being different, and hence the solvent effect on them is also different.

    含有甲基丙烯酸环氧丙酯的聚合物是热活性高分子,它们可以被用来合成体型共聚物或接枝共聚物。 当甲基丙烯酸环氧丙酯、甲基丙烯酸甲酯、和甲基丙烯酸三种单体一起进行共聚合时,首先得到一种綫型的共聚物。这种共聚物经过在120℃以上热处理,就转化成一种透明的体型的共聚物,红外光谱的研究证示,在热处理时分子链间的环氧基和羧基起了反应,交联的结果使共聚物的玻璃化温度由110℃左右提高到150℃左右。 把甲基丙磷酸环氧丙酯和甲基丙烯酸甲酯的共聚物与消去末端氨基的聚己内酰胺共溶于热的苯甲醇并150℃加热,可以得到一种接枝共聚物。这种接枝共聚物一旦析出并干燥以后,在常温下不溶于包括苯甲醇、间甲苯酚在内的大多数溶剂,但却易溶于极性较强的溶剂如98%的甲酸。这个反常的表现被认为是由于分子链间氢键作用所引起的。 作为骨干的甲基丙烯酸环氧丙酯和甲基丙烯酸甲酯共聚物及其聚己内酰胺的接枝共聚物在苯甲醇及在间甲苯酚中作了溶液粘度测定,在间甲苯酚溶液内,由于接枝,Huggins常数k′值增加了;但在苯甲醇溶液内,k′值却无甚变化。这说明由于主链和枝链化学性貭的不同,溶剂对它们的作用不一样,接枝对溶液粘度的影响不能和普通的枝...

    含有甲基丙烯酸环氧丙酯的聚合物是热活性高分子,它们可以被用来合成体型共聚物或接枝共聚物。 当甲基丙烯酸环氧丙酯、甲基丙烯酸甲酯、和甲基丙烯酸三种单体一起进行共聚合时,首先得到一种綫型的共聚物。这种共聚物经过在120℃以上热处理,就转化成一种透明的体型的共聚物,红外光谱的研究证示,在热处理时分子链间的环氧基和羧基起了反应,交联的结果使共聚物的玻璃化温度由110℃左右提高到150℃左右。 把甲基丙磷酸环氧丙酯和甲基丙烯酸甲酯的共聚物与消去末端氨基的聚己内酰胺共溶于热的苯甲醇并150℃加热,可以得到一种接枝共聚物。这种接枝共聚物一旦析出并干燥以后,在常温下不溶于包括苯甲醇、间甲苯酚在内的大多数溶剂,但却易溶于极性较强的溶剂如98%的甲酸。这个反常的表现被认为是由于分子链间氢键作用所引起的。 作为骨干的甲基丙烯酸环氧丙酯和甲基丙烯酸甲酯共聚物及其聚己内酰胺的接枝共聚物在苯甲醇及在间甲苯酚中作了溶液粘度测定,在间甲苯酚溶液内,由于接枝,Huggins常数k′值增加了;但在苯甲醇溶液内,k′值却无甚变化。这说明由于主链和枝链化学性貭的不同,溶剂对它们的作用不一样,接枝对溶液粘度的影响不能和普通的枝化高分子等 量齐观。

    In the polymerization of caprolactam in presence of 6-amino-caproic acid and benzoic acid, experimental results indicated that the role played by the benzoie acid included: the formation of polymer chains by "induction", the acid-splitting reaction of the macromolecular chains and the acylation reaction of the amino-group of the macro-molecules. During the beginning stage of the reaction, benzoic acid exerted a catalytic action on the monomer molecules causing them to unite to macromolecular chains and did not...

    In the polymerization of caprolactam in presence of 6-amino-caproic acid and benzoic acid, experimental results indicated that the role played by the benzoie acid included: the formation of polymer chains by "induction", the acid-splitting reaction of the macromolecular chains and the acylation reaction of the amino-group of the macro-molecules. During the beginning stage of the reaction, benzoic acid exerted a catalytic action on the monomer molecules causing them to unite to macromolecular chains and did not add to the monomer. As the reaction was going on, when the number of macromole-cules gradually increased, acid splitting reaction became more and more pronounced; and, after 3-4 hours' reaction, it surpassed polycondensation and made the molecular weight of the polymer decreased and the carboxyl-content increased. The acylation reaction was clearly indicated after 7-8 hours' reaction when the quantity of the polymer formed and the molecular weight of the polymer have already reached constant values, while the consumption of the benzoic acid was still going on. At the end of the reaction, when the ultimate equilibrium has been established, there was still found free benzoic acid and free carboxyl-groups; this indicated that acid-splitting, acylation and polycondensation are till reversible reactions.In the experiments on the polymerization of caprolactam in presense of water but in absense of carboxylic acid, the polymers obtained was heated at 250°, 270° or at 300° under ordinary pressure while a stream of nitrogen was passed through. The molecular weight of the polymer did not increase after heated for 6 hours (and in case of 250°, for 15 hours). The reason for no further condensation might be that the reaction medium became highly viscous which prevented the escape of water molecules and made the diffusion and collision of the macromolecules difficult. At the sametime, the steric hinde-rance of the macromolecular chain exerted on the functional groups became more and more pronounced when the chain reached certain definite length. These all made the polycondensation stopped at a certain stage.

    己内酰胺在苯甲酸和6-氨基己酸存在下的聚合反应,实验结果表明苯甲酸具有引发 单体聚合、酸解大分子链和酰化大分子的氨基的作用。反应的开始为催化引发单体生成大分子链而不是苯甲酸与单体的加成。随着大分子的增多,酸解和酰化也同时发生。在反应半小时后酸解的影响逐渐显著,到3—4小时以后,酸解影响超过缩聚使聚合物分子量下降羧基含量增加。到反应7—8小时后,聚合物生成量及分子量已达恒定而酰化仍继续进行。到反应达到平衡时,仍然有游离的苯甲酸,聚合物中仍有游离的氨基和羧基,说明酸解、酰化与缩聚都是可逆反应。 在不用苯甲酸的己内酰胺与水的聚合实验中,聚合物虽在常压通氮的情况下在250°,270°或300°加热6小时分子量仍能稳定在一定数值而不升高,即加热15小时(250°)变化也很小。氨基与羧基不再进行缩聚,可能系由于反应系统粘稠,水分子不易扩散除去,大分子不易移动接触,功能基又受本身分子链的空间阻碍,使反应不易继续进行,维持在一定平衡状态。

     
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