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copolymerization     
相关语句
  共聚
     Bulk Ring-Opening Copolymerization of D_4 with APAEDMS and Its Mathematic Simulation
     D_4/APAEDMS本体开环共聚及其数学模拟
短句来源
     Studies on the Antistatic Modification of PAN by PAN-b-PEG Copolymerization and PAN/ZnO-whisker Blend
     PAN-聚乙二醇嵌段共聚和PAN/氧化锌晶须共混对PAN抗静电改性的研究
短句来源
     Study on Plasma Copolymerization of CO_2(CH_4) with Styrene and Its Application to Polymer Blending
     CO_2(CH_4)等离子体与苯乙烯共聚及其在聚合物共混中的应用研究
短句来源
     Study on the Graft Copolymerization of Lignosulfonate and the Synthesis, Flocculation Property of Lignin-base Amphoteric Flocculant LSDC
     木质素磺酸盐的接枝共聚反应及两性木质素基絮凝剂LSDC的制备与性能研究
短句来源
     STUDIES ON REDOX INTIATIONS OF AROMATIC DIAZONIUM SALTS——Ⅳ. Block copolymerization by the use of 4, 4'-Diphenyl Tetraazonium fluoroborates as Initiator
     芳香族重氮盐氧化还原引发体系的研究——Ⅳ.利用4,4′-联苯双重氮硼氟酸盐进行嵌段共聚
短句来源
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  共聚合
     Copolymerization of Ethylene and α-Olefin Catalyzed by Cp_2ZrCl_2/Al(iBu)_3/B(C_6F_5)_3
     新型Cp_2ZrCl_2/Al(iBu)_3/B(C_6F_5)_3催化体系催化乙烯与α-烯烃的共聚合
短句来源
     Study on St/BA Microemulsion Copolymerization Initiated by K2S2O8/Na2SO3
     K_2S_2O_8/Na_2SO_3引发St/BA微乳液共聚合的研究
短句来源
     Copolymerization of Ethylene and a-Olefins With the Et(Ind)_2ZrCl_2/MAO and (Ind)_2ZrCl_2/MAO Catalyst Systems
     Et(Ind)_2ZrCl_2/MAO和(Ind)_2ZrCl_2/MAO对乙烯/α-烯烃共聚合比较研究
短句来源
     The kinetic study on the copolymerization of C_7-C_8, C_8-C_(10) and C_7-C_(10) α-ole-fins with TiCl_3-AI(C_3H_5)_2Cl catalysts in heptane was carried out at 30℃ or 40℃.
     对C_7-C_8、C_8-C_(10)和C_7-C_(10)α-烯烃在庚烷溶液中,以TiCl_3-Al(C_2H_5)_2Cl为催化剂的共聚合动力学进行了研究。
短句来源
     Copolymerization of acrylamide and sodium acrylate initiated by K_2S_2O_8-NH_2CONH_2was studied.
     本文采用K_2S_2O_8-NH_2CONH_2引发共聚合,研究了控制丙烯酰胺与丙烯酸钠共聚物分子量和组成的方法及其规律。
短句来源
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  共聚反应
     The reactivity ratios (r) of different monomers in the free radical copolymerization of VDBr with MA, MMA and St at 55 ± 0.2℃, by using AIBN as initiator, were determined, i.e. for VDBr-MA, r 1= 0.72 ± 0.05, r2 = 0.72 ± 0.05;
     本文还报道了VDBr与MA、MMA及St在55±0.2℃以偶氮二异丁腈为引发剂的自由基共聚反应竞聚率(r)分别为,VDBr-MA:r_1=0.72±0.05,r_1=0.72±0.05;
短句来源
     The better copolymerization conditions are: [M] total=2.6 mol/L, n(Al)/n(Nd)=10, [Nd]=5×10 -3 mol/L, V(toluene)/V(dioxane)=2/5 as solvent, 5 ℃, 2 h.
     实验结果表明 ,共聚反应适宜条件为 :[M]总 =2 .6mol/L( [Ip]/[MAn]=1 ) ,n( Al) /n( Nd) =1 0 ,[Nd]=5× 1 0 -3 mol/L,甲苯 /二氧六环混合溶剂 (体积比为 2 /5) ,于 5℃聚合 2 h.
短句来源
     Copolymerization of Ethylene/Hexene-1 with TiCl_4/SiO_2-MgCl_2 Supported Catalyst
     TiCl_4/SiO_2-MgCl_2载体催化剂下的乙烯/己烯-1共聚反应
短句来源
     Copolymerization of 7-Methylene-1, 4, 6-Trioxaspiro(4, 4)nonane
     7-亚甲基-1,4,6-三氧螺[4,4]壬烷的共聚反应
短句来源
     For the copolymerization of NVP, HEMA and MMA/EMA/BMA, the reaction index of BPO was 0.519, 0.523, 0.583 respectively, and the activity energy was 19.28kJ/mol, 20.11kJ/mol, 19.69kJ/mol respectively.
     对于NVP-HEMA-MMA/EMA/BMA三元共聚反应,引发剂的反应分级数分别为0.519、0.523、0.583,活化能分别为19.28kJ/mol、20.11kJ/mol、19.69kJ/mol。
短句来源
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  “copolymerization”译为未确定词的双语例句
     SYNTHESIS AND CHARACTERIZATION OF EPR-g-PS GRAFT COPOLYMERS FROM MACROMER COPOLYMERIZATION
     EPR-g-PS接枝共聚物的大分子单体共聚物合成及表征
短句来源
     The copolymerization with grafting of mixed acrylate monomers on wood initiated by the initiation system of tertiary aromatic amine (Ⅱ)
     芳叔胺体系引发混合丙烯酸酯单体在木材上的接枝共聚合反应(Ⅱ报)
短句来源
     The Relationship of limiting Conversion to temperature of homopolymerization and copolymerization for MMA, St and MMA/St
     MMA、St及MMA/St聚合温度和极限转化率的关系
短句来源
     The Effect of Grafting Copolymerization of BA onto SBS in the presence of Oxygen Inhibitor and Antiager
     氧、阻聚剂和防老剂对BA与SBS接枝聚合的影响
短句来源
     A STUDY ON COPOLYMERIZATION OF GRADIENT REFRACTIVE INDEX ROD PREPARED FROM DIALLYL PHTHALATE-METHYL METHACRYLATE COPOLYMER
     邻苯二甲酸二烯丙酯和甲基丙烯酸甲酯共聚物梯度折射率棒制备过程的研究
短句来源
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  copolymerization
The copolymerization of propylene with 1,4-divinylbenzene using an isospecific MgCl2-supported TiCl4 catalyst yielded polypropylenes containing pendant styrene moieties.
      
Water-borne raspberry-like PMMA/SiO2 nanocom-posite particles were prepared via free radical copolymerization of methyl methacrylate (MMA) with 1-vinylimidazole (1-VID) in the presence of ultrafine aqueous silica sols.
      
The studies over forty years on rare earth catalysts in polymer syntheses of diene, alkyne, alkylene oxide, thiirane, carbon dioxide copolymerization, lactide, caprolactone, cyclic carbonate and so forth in China have been reviewed.
      
Polystyrene-graft-polydimethylsiloxane (PS-g-PDMS) copolymers with different PDMS content were synthesized by the radical bulk copolymerization of PDMS macromonomer and styrene.
      
Living free-radical copolymerization of allyl glycidyl ether with methyl acrylate
      
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The reactivity ratios for the copolymerization of methyl, propyl, butyl, heptyl and cetyl methacrylates with vinyl acetate have been determined. The values obtained are r_1=22.21±0.89 r_2= 0.072±0.026 for methyl ester copolymer, and r_1= 73.3±7.4, 62.1±3.8, 60.4±0.4, 68.3±3.2; r_2=0.186±0.038, 0.127±0.015, 0.271±0.039, 0.135±0.055 for the other copolymers respectively. Since these values remain almost unchanged when alkyl group increased from three to sixteen carbon atoms, obviously the size of alkyl group...

The reactivity ratios for the copolymerization of methyl, propyl, butyl, heptyl and cetyl methacrylates with vinyl acetate have been determined. The values obtained are r_1=22.21±0.89 r_2= 0.072±0.026 for methyl ester copolymer, and r_1= 73.3±7.4, 62.1±3.8, 60.4±0.4, 68.3±3.2; r_2=0.186±0.038, 0.127±0.015, 0.271±0.039, 0.135±0.055 for the other copolymers respectively. Since these values remain almost unchanged when alkyl group increased from three to sixteen carbon atoms, obviously the size of alkyl group in the ester has little influence upon the monomer reactivity in polymerization.

本文测定了甲基丙烯酸甲酯、丙酯、丁酯、庚酯、十六酯和乙酸乙烯酯共聚合作用中的竞聚率,其数值分别为r_1=22.21±0.89;73.3±7.4;62.1±3.8;60.4±0.4;68.3±3.2 r_2=0.072±0.026;0.186±0.038;0.127±0.015;0.271±0.039;0.135±0.055。其中自丙酯至十六酯的r_1、r_2值均在65及0.18左右说明酯族自三个碳原子增加十六个後竞聚率的变化仍然很小,这说明醇基的大小对单体活泼度的影响不大。

Weakly acidic cation exchangers in bead form have been prepared by thefollowing methods: (1) copolymerization of methyl methacrylate with a variableamount of 55% solution of divinylbenzene, followed by hydrolysis either withan acid or a base; (2) copolymerization of methacrylic acid with a variableamount of 55% solution of divinyIbenzene; (3) copolymerization of methacrylicacid with allyl methacrylate and a 55% solution of divinylbenzene. The resins obtained by the first method possess low...

Weakly acidic cation exchangers in bead form have been prepared by thefollowing methods: (1) copolymerization of methyl methacrylate with a variableamount of 55% solution of divinylbenzene, followed by hydrolysis either withan acid or a base; (2) copolymerization of methacrylic acid with a variableamount of 55% solution of divinyIbenzene; (3) copolymerization of methacrylicacid with allyl methacrylate and a 55% solution of divinylbenzene. The resins obtained by the first method possess low capacities. This isprobably due to the fact that copolymer of methyl methacrylate anddivinylbenzene resists hydrolysis. The resins prepared by the second and thirdmethods have high capacities and are opaque. They might be the so-called"popcorn polymer". These resins have desirable properties.

球状弱酸性阳离子交换剂可由下列方法制成:(1)甲基丙烯酸甲酷与不同黄的55%苯二乙烯溶液共聚合.随用酸或碱水解之。(2)甲基丙烯酸与不同量的55%苯二乙烯溶液共聚合。(3)甲基丙烯酸,甲基丙烯酸丙烯酯,与55%苯二乙烯溶液共聚合。由第一法制得的树脂交换量不高,很明显是因甲基丙烯酸甲酯-苯二乙烯的共聚体不易水解的缘故。由第二、第三法制得的树脂交换量很高且表面是不透明的。这可能为通称的“玉米花”聚合体。这些树脂具有良好的性能。

In concentrated aqueous solution of sodium, thiocyanate, acrylonitrile has been successfully photo-polymerized in the presence of a certain high efficiency photosensi-tiger with high conversion around 90%. By using three different concentrations of monomer 8%, 10%, and 12% with respect to salt solution at three different temperature of 30°, 40°, and 50°, percentage of conversion was plotted against reaction time in hour. Copolymerization of acrylonitrile (M1) with vinyl chloroacetate, acrylic acid, methyl...

In concentrated aqueous solution of sodium, thiocyanate, acrylonitrile has been successfully photo-polymerized in the presence of a certain high efficiency photosensi-tiger with high conversion around 90%. By using three different concentrations of monomer 8%, 10%, and 12% with respect to salt solution at three different temperature of 30°, 40°, and 50°, percentage of conversion was plotted against reaction time in hour. Copolymerization of acrylonitrile (M1) with vinyl chloroacetate, acrylic acid, methyl acrylate, ethyl acrylate, acrylamide, and a-vinyl pyridine (M2) respectively in ratio of 10:i at total concentration of 8%, 1.0% and 12% at temperature of 30°, 40°, and 50° were also studied. Besides vinyl chloroacetate, all other copolymerizations gave high conversions around or above 90% within 5-6 hours. A comparison of rate conversion of different copolymerizations with respect to acrylonitrile homopolymerization was made. Besides vinyl chloroacetate, all other copolymerizations proceeded more or less faster than homopolymerization and acry-lonitrile-acrylamide pair being the fastest. A homogeneous, nearly colorless, clear and viscous fluid with few small gas bubbles was always obtained. This viscous fluid could be spinned directly without any treatment into fibers of good properties and improved dyeability.

1.丙烯腈,丙烯腈—氯代醋酸乙烯,丙烯腈—丙烯骏甲酯,丙烯腈—丙烯酸乙酷,丙烯腈—丙烯酸,丙烯腈—丙烯酰胺和丙烯腈—乙烯吡啶在濃无机盐溶液中的光聚合反应可以用效率好的有机光敏剂引发聚合,在5小时左右除与氯代醋酸乙烯共聚的转化率较低外其余的都可达到或超过90%。 2.光敏剂对光聚合反应有较大的影响,我们找到了性能优良的有机光敏剂。 3.用此法进行光聚合反应所得之母液,不分层,为透明的液体,壁上稍有小汽泡,这些母液可以用来直接抽丝,抽出的丝性质优良,共聚物还容易染色。

 
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