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siloxane
相关语句
  硅氧烷
     Methods: After methyl esterification in boron trifluoride-ether with methanol,the test sample was detected on the condition of HP-5 capillary column(5% phenyl methyl siloxane,30 m×320 μm,0.25 μm),column temperature of 170 ℃,gasification temperature of 180 ℃,FID detector(200 ℃),flow rate of 1.4 mL/min and feed sample of 1 μL.
     方法:将供试品在三氟化硼-乙醚中与甲醇甲酯化后,在以下色谱条件下检测:色谱柱:HP-5毛细管柱(填料为5%苯基甲基硅氧烷,30 m×320μm,0.25μm),柱温:170℃,气化室温度:180℃,检测器:FID(200℃),流速:1.4 mL/min,进样量:1μL。
短句来源
     In this thesis, the incompletely closed heptameric siloxane ((C5H9)7Si7O12(OH)3) was synthesized by the controlled hydrolysis of cyclopentyltrichlorosilane (C5H9SiCl3).
     本文以环戊基三氯硅烷(C5H9SiCl3)为原料,经水解缩合制备了未完全缩合三羟基硅氧烷((C5H9)7Si7O12(OH)3,T7)。
短句来源
     The best structure and component are dimethyl siloxane chain m=80,hydric-siloxane chain n=9,and three kinds of allyl block co-polyether,of which PE-A is 25%,PE-B 45% and PE-C 30%.
     确定其最佳结构组成为二甲基硅氧烷链节数m=80,含氢硅氧烷链节数n=9,三种不同烯丙基共聚醚PE-A、PE-B及PE-C摩尔分数分别为25%,45%及30%。
短句来源
     Synthesis and hydrogenation activity of poly-N,N-(β-ferrocenyl)-diethyl-γ-aminopropyl siloxane palladium complex catalyst
     聚 N,N-(β-二茂铁)-二乙基-γ-氨丙基硅氧烷钯催化剂的合成及其加氢活性
短句来源
     The residues of the films by heating at 400 ℃ increase from 0 16% to 9 67% with the change of the mass fraction of siloxane from 0 to 15%.
     当硅氧烷质量分数由0升至15%,400℃胶膜的残留物由016%提高到967%;
短句来源
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  烷基硅氧烷
     AbstractThe preparing technology for heat-resistant and wa-terproof polysiloxane coating, such as the hydrolysis of siloxane and silicate, and the selection of the sol-vent, temperature and time, material ratio, pigment/extender and gydrolyst were described.
     叙述了硅聚合物耐热耐水涂料的制备技术问题,诸如硅氧烷与硅酸酯的水解,溶剂的选择,反应温度和时间,原料配比,颜镇料和水解催化剂的选择。 以四官能团的硅酸酯与三官能团的烷基硅氧烷,通过严格控制的共水解反应,协调二者的自缩聚和共缩聚速率,制得兼有硅酸盐和有机硅聚合物特性的基料。
短句来源
  “siloxane”译为未确定词的双语例句
     The optimum conditions were 120g/l resin, 14g/l catalyst, 40g/l fiber-protecting agent PW, 30g/l~50g/I amino siloxane, baked 180s (160 ℃) or 120s(170℃)
     最佳工艺条件为:树脂120g/L,催化剂14g/L,纤维保护剂PW40g/L,三甲氨基硅油30g/L~50g/L,焙烘:160℃(180秒)或170℃(120秒)。
短句来源
     The chromatographic analysis was performed using HP-5 column (5%phenyl methyl siloxane, 30 m X 0.25 mm X 0.25 m) with FID detector and column temperature was programmed from 140℃ to 280℃ (holding for 22 min) at 20℃/min.
     GC条件:FID检测器、HP-5色谱柱(5%phenyl methyl siloxane,30 m×0.25 mm×0.25 μm)、柱温从140℃以20℃/min升温到280℃,保持22 min。
短句来源
     It was found that the glossiness of the polymer was reduced from 89 8% to 70 9%, Ca 2+ stability from 9 7 mL to 2 7 mL, pencil hardness from 2B to 3H and the water absorption from 24 9% to 0 2% with the increase of epoxy siloxane, respectively.
     随着环氧硅氧烷在聚合物中含量的提高 ,聚合物的光泽由 89 8%降至 70 9%、Ca2 + 稳定性由 9 7mL降至 2 7mL ,而铅笔硬度由 2B升至 3H、吸水率由 2 4 9%降至0 2 % ,同时得到n(环氧硅氧烷 )∶n(甲基丙烯酸 ) =1∶1为最佳比例。
短句来源
     5% Phenyl methyl siloxane capillary column was used, with dioxane as the internal standard. The average recoveries of methanol, tetrahydrofuran, dichloroethane, pyridine and toluene was 99.2%( RSD 0.8%),99.2%( RSD 0.7%),99.4%( RSD 0.7%),100.4%( RSD 0.9%) and 99.8%( RSD 0.3%), respectively.
     5种溶剂的平均回收率分别为 99.2 % (RSD0 .8% )、99.2 % (RSD0 .7% )、99.4 % (RSD0 .7% )、10 0 .4 % (RSD0 .9% )、99.8% (RSD0 .3% ) ;
短句来源
     Method The sample was analyzed on an HP-5 capillary column(5% phenyl methyl siloxane,30.0 m×320 nm×0.25 μm) using nitrogen as carrier gas. The temperatures of the column,injector and detector were 110,180 and 250 ℃,respectively.
     方法采用HP-5石英毛细管柱(5%phenyl methylsiloxane)(30.0 m×320 nm×0.25μm),柱温为110℃,进样口温度为180℃,检测器温度为250℃,载气为氮气。
短句来源
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  siloxane
It can be assumed that, at pH 3, charged units of a macromolecule form ion-dipole bonds with silanol groups, while uncharged groups form hydrophobic bonds with siloxane surface sites.
      
Determination of the Three-dimensional Network Parameters of Radiation-Cured Siloxane Rubber Vulcanizates
      
The dependence of the concentration of network junction points, as determined by equilibrium swelling ratio, in an SKTV-shch siloxane rubber and siloxane rubber-silicon dioxide formulations on the dose of ionizing radiation was investigated.
      
Effect of Radiation on the Supermolecular Structure of Siloxane Block Copolymers with Different Compositions and Block Sizes
      
Radiation-Induced Structural Transformations of Siloxane Diblock Copolymers
      
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The dynamic mechanical properties of double chain polyphenylsilsesquioxane were studied with a torsion pendulum between -150° and 450℃ at 1 Hz. The natures of the loss peaks were investigated by studying the effects of thermal treatment and plasticizer on the shear modulus and damping. We found that the loss peak at -120℃ is due the local movement of the siloxane chain, loss peak at - 40℃ is the characteristic feature of the double siloxane chain, and at 300℃ the decomposition of the double chain...

The dynamic mechanical properties of double chain polyphenylsilsesquioxane were studied with a torsion pendulum between -150° and 450℃ at 1 Hz. The natures of the loss peaks were investigated by studying the effects of thermal treatment and plasticizer on the shear modulus and damping. We found that the loss peak at -120℃ is due the local movement of the siloxane chain, loss peak at - 40℃ is the characteristic feature of the double siloxane chain, and at 300℃ the decomposition of the double chain begins.

用自制的扭摆仪研究了双链聚苯基倍半硅氧烷在-150°至450℃之间的动态力学性质,应用热处理和加增塑剂等方法对阻尼峰的本质进行了探索,初步认为-120℃的峰相当于硅-氧键单链的局部运动,-40℃的峰可能是双链硅氧烷的特征峰,到300℃时双链开始分解。

The synthesis of linear polyorganosiloxane containing cyclodisilazane in the backbone was described. The polymers neither crosslinked during polymerzation nor on stroage. This characteristic is obviously different from what have been reported in the literature. Vulcanized rubber prepared from the polymer E has good mechanical strength and fine hydrolytic stability. Its heat resistance is almost as good as that of polycarborane siloxane rubber. Heating at 350℃ for 24 hours in air, it still retains an elongation...

The synthesis of linear polyorganosiloxane containing cyclodisilazane in the backbone was described. The polymers neither crosslinked during polymerzation nor on stroage. This characteristic is obviously different from what have been reported in the literature. Vulcanized rubber prepared from the polymer E has good mechanical strength and fine hydrolytic stability. Its heat resistance is almost as good as that of polycarborane siloxane rubber. Heating at 350℃ for 24 hours in air, it still retains an elongation of 100% and tensile strength of 80 kg/cm3.

本文叙述了在主链中含有环二硅氨烷的线型聚硅氧烷的合成,所得到的聚合体无论在聚合或贮存时都不会发生交联,这个结果完全不同于文献曾经报导的类似结构的聚合体的实验结果。 由聚合体 (?)得到的橡皮具有很好的力学性能和好的水解稳定性,其耐热性接近于卡硼烷硅橡胶。在350℃的热空气下老化24小时,仍能保持伸长率100%和抗拉强度80公斤/厘米~2。

The first three members of polytetramethylcyclo-p-silylphenylene siloxane series i. e. the cyclic dimer, trimer and tetramer, have been obtained in 30~70% yields, from p-bis (dimethylethoxysilyl) benzene or p-bis (dimethylchlorosilyl) benzene by means of hydrolysis in the presence of hydrochloric acid and ethyl ether. From m-bis (dimethylchlorosilyl) benzene only one cyclic dimer has been obtained indicating the great reluctance of m-silylphenylene-siloxane to form larger cyclic structuresUnder the...

The first three members of polytetramethylcyclo-p-silylphenylene siloxane series i. e. the cyclic dimer, trimer and tetramer, have been obtained in 30~70% yields, from p-bis (dimethylethoxysilyl) benzene or p-bis (dimethylchlorosilyl) benzene by means of hydrolysis in the presence of hydrochloric acid and ethyl ether. From m-bis (dimethylchlorosilyl) benzene only one cyclic dimer has been obtained indicating the great reluctance of m-silylphenylene-siloxane to form larger cyclic structuresUnder the catalysis of potassium silanolate, the cyclic trimer of tetramethyl-p-silylphenylene siloxane readily polymerizes at 150℃, it can also be copolymerized with octamethylcyclotetrasiloxane. On the contrary, the cyclic dimer of tetramethyl-m-silyephenylene siloxane can not be polymerized at all under the same condition.

利用在盐酸乙醚溶液中的水解缩聚反应,从对-双(二甲基乙氧基硅)苯或对-双(二甲基氯硅)苯合成了聚四甲基环对硅苯撑硅氧烷系列的前三个成员:环状二聚体、环状三聚体和环状四聚体。但从间-双(二甲基氯硅)苯只能得到其相应的环状二聚体。由于间硅苯撑硅氧烷的空间结构原因而难以形成大环状化合物。在150℃及硅醇钾的催化下,四甲基对硅苯撑硅氧烷的环状三聚体既可以开环聚合,也可以和八甲基环四硅氧烷进行开环共聚合;而在相同的条件下,四甲基间硅苯撑硅氧烷的环状二聚体却完全不聚合。

 
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