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monomer conversion
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  单体转化率
     Monomer conversion is higher than 90% when [St], [β-HPA], [KPS] is 2. 66, 0. 228, and 5. 8×10-3 mol/L respectively under 80℃ for 5 h.
     [St]、[β-HPA]、[KPS]分别为2.66、0.228和5.8×10~(-3)mol/L,80℃反应5h,单体转化率可达90%;
短句来源
     The regulation of incremental method of regulator t - C12H25SH on the molecular parameters in the production of SBR1502 with the monomer conversion of 70% was studied.
     研究了增量加入调节剂t—C_(12)H_(25)SH对单体转化率为70%的SBR1502分子参数的调节作用。
短句来源
     Results The monomer conversion of Artglass DA3 was significantly increased from ~73.2% to ~75.0% .
     结果常规处理时ArtglassDA3的单体转化率为73.2 %±2 .2 % ,二期热压处理后单体转化率为75 .0 %±2 .0 %提高幅度为2 .5 %。
短句来源
     When the aging time is 10 min, the aging temperature is 30℃,the monomer conversion is the highest at the same n(Al)/n(Ti) and n(Ti)/n(1-butene).
     相同n(Al)/n(Ti)、n(Ti)/n(1-丁烯),陈化时间均为10min时,陈化温度为30℃时单体转化率最高;
短句来源
     The mechanical properties of the oil-extended rubber were measured. The results showed that under the conditions of monomer concentration within 110~140 g/L and the Al/B mole ratio was within 0.8~1.8,the high Mooney viscosity BR with ML(1+4)100 ℃70~100 was synthesized,with the monomer conversion higher than 80%.
     结果表明,在单体的质量浓度为110~140 g/L、Al/B摩尔比为0.8~1.8时,可在确保单体转化率80%以上的前提下合成出ML(1+4)100 ℃为70~100的高门尼粘度顺丁橡胶。
短句来源
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  转化率
     Monomer conversion is higher than 90% when [St], [β-HPA], [KPS] is 2. 66, 0. 228, and 5. 8×10-3 mol/L respectively under 80℃ for 5 h.
     [St]、[β-HPA]、[KPS]分别为2.66、0.228和5.8×10~(-3)mol/L,80℃反应5h,单体转化率可达90%;
短句来源
     The regulation of incremental method of regulator t - C12H25SH on the molecular parameters in the production of SBR1502 with the monomer conversion of 70% was studied.
     研究了增量加入调节剂t—C_(12)H_(25)SH对单体转化率为70%的SBR1502分子参数的调节作用。
短句来源
     K2S2O8/ Na2S2O3 is the suitable initiator for sisal fibers graft reaction because it can reduce reaction temperature and increase the percent of graft and monomer conversion.
     采用K_2S_2O_8/Na_2S_2O_3氧化还原体系作为剑麻纤维接枝的引发剂,能够降低反应的温度,提高纤维素的接枝率和单体的转化率
短句来源
     Results The monomer conversion of Artglass DA3 was significantly increased from ~73.2% to ~75.0% .
     结果常规处理时ArtglassDA3的单体转化率为73.2 %±2 .2 % ,二期热压处理后单体转化率为75 .0 %±2 .0 %提高幅度为2 .5 %。
短句来源
     When the aging time is 10 min, the aging temperature is 30℃,the monomer conversion is the highest at the same n(Al)/n(Ti) and n(Ti)/n(1-butene).
     相同n(Al)/n(Ti)、n(Ti)/n(1-丁烯),陈化时间均为10min时,陈化温度为30℃时单体转化率最高;
短句来源
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  单体的转化率
     K2S2O8/ Na2S2O3 is the suitable initiator for sisal fibers graft reaction because it can reduce reaction temperature and increase the percent of graft and monomer conversion.
     采用K_2S_2O_8/Na_2S_2O_3氧化还原体系作为剑麻纤维接枝的引发剂,能够降低反应的温度,提高纤维素的接枝率和单体的转化率
短句来源
     Under these condi- tions,the monomer conversion was 99.85% with graft ratio 148.22% and graft efficiency 98.96%.
     此时,单体的转化率达99.85%,接枝率为148.22%,接枝效率98.96%。
短句来源
     High activity of the catalyst system was found. In the polymerization of CYG1/ Al(i-Bu)3, With prolongation of polymerization time, the monomer conversion and the polymer's molecular weight all increase.
     化合物CYG1在Al(i-Bu)_3为助催化剂时,随着聚合时间的延长,单体的转化率和聚合物的相对分子质量都早现出不断上升的趋势;
短句来源
     In this thesis, the UV spectrophotometry and colloid titration were used to determine the monomer conversion rate in diallyldimethylammonium chloride (DADMAC) and acrylamide (AM) radical copolymerization, providing a simple and convenient method to measure the content of AM in copolymerization reaction.
     本文首先采用紫外分光光度法、胶体滴定法研究了聚二甲基二烯丙基氯化铵(DADMAC)—丙烯酰胺(AM)的自由基共聚反应中单体的转化率,提供了一种检测DADMAC—AM共聚反应中残留AM的方便、快捷的分析方法;
短句来源
     Using azo-bis-isobutyronitrile(AIBN) and potassium persulfate(KPS) as composite initiator (increased) the monomer conversion.
     采用偶氮二异丁腈(AIBN)和过硫酸钾(KPS)复合引发剂可提高单体的转化率;
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  “monomer conversion”译为未确定词的双语例句
     By aimed the three factors of the grafted ratio, the monomer conversion ratio and the graft efficiency, the best conditions of reaction was found: used ammonium persulfate-sodium bisulfateas indicator, the concentration of acrylic acid was 1.1 mol/L, the temperature was 35℃,the concentration of the initiator was 2.8 mmol/L, the time was 3h,the neutral degree was 80%.
     在过硫酸钾-亚硫酸氢钠的引发下 ,最佳的反应条件是 :反应温度 35℃ ,引发剂的浓度是 2 .8m mol/· L- 1 ,丙烯酸的浓度是1.1mol· L- 1 ,反应时间 3h,中和度为 80 %
短句来源
     The optimum dose range (1-7 kGy),dose rate (>40 Gy/min) and monomer concentration (1%) were chosen through determing the monomer conversion yield and molecular weight (Mw=6.8x105) of product.
     结果表明,室温、无氧条件下在水或PBS缓冲溶液中NIPAAm及它与NASI共聚物(polyNIPAAM-NASI)辐射合成的最佳条件为:剂量1-7kGy,剂量率不小于40Gy/min,溶液中单体浓度小于1%。
短句来源
     The number-average molecular of polymers increases linearly with monomer conversion. The results show that FeCl_2/benzeneacetic acid and FeCl_2/butanedioic acid are particularly effective catalyst system for ATRP of styrene.
     结果表明 ,FeCl2 /二苯乙醇酸和FeCl2 /丙二酸体系是有效的苯乙烯原子转移自由基聚合反应的催化体系
短句来源
     Both the polymerization rate and the molecular weight of PS products increased greatly with the increase of TiCl_4 concentration and a near second-order (β=1.86) dependence on TiCl_4 concentration was observed,which may be attributed to the dimer formation of TiCl_4. The experimental results also showed that the monomer conversion as well as the molecular weight of polymer products increased,but MWD almost kept unchanged with the polymerization time.
     聚合速率对单体浓度呈一级动力学关系,对Py、H2O和TiCl4的反应级数分别为-0.72、0.72和1.86.聚合速率对TiCl4浓度呈接近二级动力学关系,这可能与体系中TiCl4主要以二聚体形式存在有关.
短句来源
     The results showed that there was a steady character in this system when the monomer conversion was less than 35%. The kinetic equation of the bulk precipitation polymerization rate was obtained: Rp= kpf[Ti]0 [Al]0 [M]0 The apparent activation energy calculated was 29. 7 kJ/ mol.
     结果表明,体系在单体相未消失之前为稳态聚合,其稳态聚合速率方程为:Rp=kpf[Ti]0[Al]0[M]0,即在单体相未消失前,Rp为恒量。
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  monomer conversion
Monomer conversion can be dramatically increased from about 60-95% by changing the concentration of sodium dodecylbenzenesulfonate (SDBS) surfactant.
      
We can now achieve >amp;gt;95% monomer conversion in less than three hours, while maintaining polydispersities ~1.3.
      
In the CSTR, the monomer conversion and the molecular weights are increased as the feed acetic acid concentration is increased.
      
Complete monomer conversion and high molecular weight were achieved in less than 6 minutes under nonisothermal conditions.
      
The amount of generated D6 increases linearly with the monomer conversion in the range of the D3 conversion between 0 and 60% and is almost independent of temperature.
      
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There are only few laboratories that have investigated the NaSCN solution polymeri-zation of the sulfonic acid type third monomer.Up to present no industrialization hasbeen reported yet.In recent years,a series of research regarding NaSCN polymerizationof the sulfonic acid type third monomer has been worked by some domestic organizationsto promete fiber quality.Many results were obtained,but they are limited only to thetechnology of medium monomer conversion (70-75%) at low monomer concentration(17%).In...

There are only few laboratories that have investigated the NaSCN solution polymeri-zation of the sulfonic acid type third monomer.Up to present no industrialization hasbeen reported yet.In recent years,a series of research regarding NaSCN polymerizationof the sulfonic acid type third monomer has been worked by some domestic organizationsto promete fiber quality.Many results were obtained,but they are limited only to thetechnology of medium monomer conversion (70-75%) at low monomer concentration(17%).In order to meet the demand of low monomer conversion (55%) for large-scaleproduction,the authors have proceeded further experiments for the following purposes.1.To study the principal physical properties of the third monomer methyl allylsulfonate (MAS).2.To find some regulations for the solution polymerization under law conversion con-ditions (intermittent and continuous):e.g.The effect of MAS quantity inmonomer mixture to the polymerization reaction;the effect of reaction time tothe conversion rate;the effect of the conversion rate to molecular weight;therelation between overall conversion rate and third monomer conversion,etc.3.To establish main parameters of technological aspects for polymerization in orderto serve the large-scale production for reference.Practices from large-scale production during recent two years have verified thatNaSCN one step low conversion technological experiments of MAS third monomer suitfundamentally to the above mentioned purpose.

以磺酸型第三单体的硫氰酸钠溶液聚合,国外仅有少数实验室研究,未见工业化报导。为了提高纤维质量,近年来国内曾对磺酸型第三单体的硫氰酸钠溶液聚合进行了一系列研究,取得很多结果,但仅限于低单体浓度(17%)中单体转化率为70—75%的工艺。为了适应单体转化率为55%的大工业生产的需要,我们进一步进行了试验。本试验主要探讨:1.第三单体甲基丙烯磺酸钠(MAS)的一些主要物理性质;2.在低单体转化率情况下溶液聚合的规律(间歇与连续):例如单体混合液中 MAS 用量对聚合反应的影响,反应时间对转化率影响,转化率对分子量的影响,总单体转化率与三单体转化率之关系等;3.确定聚合工艺条件的主要参数,供工业化生产作参考。通过近二年的生产实践,说明以 MAS 为第三单体及以硫氰酸钠为溶剂的一步法低转化率工艺试验,基本上达到预期的试验要求.

Generally,the theoretical treatment of configurational sequence distribution has been made by statistical method.In this paper,we solve the kinetic equations of living copolymerization in Bernoulli and Markov processes with the aid of linear differential technique and obtain the sequence distribution,the functions for number average length,weight average length and sequence fraction.On the basis of these,we propose the decision equations of Bernoulli process as follows.which are a modification of Bovey's map.If...

Generally,the theoretical treatment of configurational sequence distribution has been made by statistical method.In this paper,we solve the kinetic equations of living copolymerization in Bernoulli and Markov processes with the aid of linear differential technique and obtain the sequence distribution,the functions for number average length,weight average length and sequence fraction.On the basis of these,we propose the decision equations of Bernoulli process as follows.which are a modification of Bovey's map.If the reaction system falls under Bernoulli process,fraction of isotac-tic,syndiotactic and heterotactic configuration PI,PS,PH does not depend on reaction time,monomer conversion and initial concentration of monomer.Alternatively,in the case of the first Markov proces,fraction of configuration varies with time,monomer concentration and approaches a definite limit as propagation parameter x→∞ It is proved that the theoretical results are in agreement with experimental data.Generally,the theoretical treatment of configurational sequence distribution has been made by statistical method.In this paper,we solve the kinetic equations of living copolymerization in Bernoulli and Markov processes with the aid of linear differential technique and obtain the sequence distribution,the functions for number average length,weight average length and sequence fraction.On the basis of these,we propose the decision equations of Bernoulli process as follows.which are a modification of Bovey's map.If the reaction system falls under Bernoulli process,fraction of isotac-tic,syndiotactic and heterotactic configuration PI,PS,PH does not depend on reaction time,monomer conversion and initial concentration of monomer.Alternatively,in the case of the first Markov proces,fraction of configuration varies with time,monomer concentration and approaches a definite limit as propagation parameter x→∞ It is proved that the theoretical results are in agreement with experimental data.

本文通过严格解微观反应动力学的方法,求得了烯类高聚物的构型序列尺寸分布函数,推导了各种序列的平均长度和重量分数。在此基础上,提出了Bernoulli过程的判别式,改进了Bovey图,并处理了一系列文献上和我们自己的数据。

For the anionic polymerization of polar monomer initiated by arbitrarily functional initiator, with instantaneous initiation and monomer termination, the expressions of molecular weight distribution, average degree of polymerization, functionality distribution and average functionality of the polymer formed have been derived by means of non-steady state method. The maximum amount of the monomer which will be consumed during the polymerization under consideration was discussed. A theoretical method has been established,...

For the anionic polymerization of polar monomer initiated by arbitrarily functional initiator, with instantaneous initiation and monomer termination, the expressions of molecular weight distribution, average degree of polymerization, functionality distribution and average functionality of the polymer formed have been derived by means of non-steady state method. The maximum amount of the monomer which will be consumed during the polymerization under consideration was discussed. A theoretical method has been established, with which the molecular weight distribution and the values of other molecular parameters can be calculated from the monomer conversion and initial conditions of the polymerization. It was shown that with a few exceptions, the theore-tical curves of molecular weight distribution resulted from numeric computation possess double peaks. Such a process is particularly true for the anionic polymerization of methyl methacrylate in polar solvents and at lower temperature.

关于任意官能度多官能团引发剂瞬时引发并有单体链终止的阴离子型聚合反应体系,本工作通过非稳态动力学分析,求得了分子量分布函数和平均聚合度的一般表示式,讨论了单体的最大消耗量和聚合物的官能度分布问题,建立了从反应的初始条件和单体转化率计算产物的各种分子参数的方法。上述理论结果适用于甲基丙烯酸甲酯等极性单体在极性溶剂中的阴离子型聚合反应。数值计算的结果表明:当引发剂的官能度为2时,除了少数例外,所得聚合物的分子量分布一般具有双峰。

 
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