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   峰顶温度 在 有机化工 分类中 的翻译结果: 查询用时:0.487秒
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峰顶温度
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  peak temperature
    The results show that the curing activity was so greatly enhanced that the curing peak temperature decreased from 190 ℃ for the unmodified system to 120~140 ℃ for the modified systems, and the apparent activation energy of curing reaction decreased from 131 kJ/mol to 70~ 80 kJ/mol .
    结果表明 ,经过改性的固化体系的固化反应活性明显提高 ,固化反应峰顶温度从未改性体系的 1 90℃降至 1 2 0~ 1 4 0℃ ,表观活化能从未改性体系的 1 31 k J/mol降至 70~80 k J/mol.
短句来源
    Results show that the curing activity of modified E 51/dicy curing system was so greatly enhanced that the curing reaction peak temperature decreased from 190 to 140℃, and the apparent activation energy of curing reaction is reduced from 145 5 kJ/mol to 70~80 kJ/mol.
    结果表明 ,改性体系固化反应活性明显提高 ,固化反应表观活化能降低 ,固化反应峰顶温度从 190℃降低至 14 0℃ ,固化反应的表观活化能由 14 5 5kJ/mol降至 70~ 80kJ mol;
短句来源
    Results show that the curing activity of modified epoxy resin(E-51)/methyl tetrahyhrophathalate(MTHPA) curing system is so greatly enhanced that the curing reaction peak temperature decreases 160 ℃~200 ℃, and the apparent activation energy of curing reaction is reduced from 160.3 kJ/mol to 63 kJ/mol~87 kJ/mol.
    结果表明 ,改性后的 E- 5 1/MTHPA体系反应活性明显提高 ,固化反应峰顶温度较未改性体系降低 160℃~ 2 0 0℃ ,固化反应的表观活化能由未改性体系的 160 .3k J/mol降至 63k J/mol~ 87k J/mol。
短句来源
    Results show that the curing activity of EU modified E51/dicy curing system is so greatly enhanced that the curing reaction peak temperature decreases from 190 ℃ to 140 ℃, and the apparent activation energy of curing reaction is reduced from 145.51 kJ/mol to 73.61 kJ/mol.
    结果表明,改性体系固化反应活性明显提高,固化反应表观活化能降低,固化反应峰顶温度从190℃降低至140℃,固化反应的表观活化能由145.5kJ/mol降至73.6kJ/mol;
短句来源
    From 189 ℃ to 236 ℃, the thermal decomposition process occurs with the peak temperature at 210 ℃. The mass percent of solid residue is up to 25%.
    在189~236℃范围内发生热分解,峰顶温度为210℃,固相残渣含量为25%;
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    The kinetic parameteres of the curing reaction were obtained, with the apparent activition energy being 81. 27 kJ/mol, and the curing reaction order being 0. 90.
    E-PCE/DDS体系的最低固化反应温度为163.2℃,固化反应峰顶温度为228,1℃,固化反应表观活化能为81.27kJ/mol,固化反应级数为0.90。
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    With the increase of arm numbers of PEG,the temperature of the melting peak of dried gels and the swelling ratio of hydrogels decrease;
    随着PEG臂数的增加 ,干胶的熔融峰顶温度下降 ,凝胶的溶胀比减小 ;
短句来源
    The curing temperature of A80/three kinds of Novolac resins is about 150℃ when 2-MZ(0.1phr)is used as accelerant. However,the scope of A80/ BPFN system's curing temperature is about 55℃,it is boarder than the other two systems'.
    以2-MZ(0.1phr)作为促进剂,三种线型酚醛固化A80体系的固化反应放热峰的峰顶温度均为155℃左右,其中A80/BPFN体系的固化温度范围较宽,约55℃。
短句来源
    The curing temperature of novolac/A80 was about 150 ℃ when 2-MZ(0.1 phr) was used as accelerants. The scope of curing for BPFN/A80 was about 55 ℃. It could be cured completed under 150 ℃ for 2 hours.
    以2-MZ(0.1份)作为促进剂,三种线形酚醛固化A80体系的固化反应放热峰的峰顶温度均为155℃左右,其中A80/BPFN体系的固化温度范围较宽约55℃,在150℃条件下2 h可固化完全。
短句来源
    All of 2,4,6-tri (dimethylamine methylene) phenol (DMP-30), hexamethylenetetramine (HMTA) and 2-methylimidazole (2-MZ) could accelerate the reaction between A80 and novolacs. The gel time was decreased dramatically with increasing of curing temperature. The temperatures of exothermic peak moved to low temperature with increasing of accelerant content.
    DMP-30、HMTA、2-MZ对A80/Novolacs固化体系的固化反应均有促进作用,随温度升高凝胶时间迅速下降,随促进剂用量增加固化反应放热峰的峰顶温度向低温方向平移。
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  peak temperature
The possibility of reconstructing a two-peak temperature distribution by the proposed method is demonstrated.
      
Effect of orientation on the peak temperature of the yield-stress anomaly in single crystals of the Ni3Ge alloy
      
Temperature dependence of the yield stress τc(T) and shear stresses, as well as the orientation dependence of the peak temperature Tp of the yield-stress anomaly have been studied on single crystals of the Ni3Ge alloy.
      
The peak temperature Tp corresponds to the maximum in the τc(T) dependence.
      
It is shown that in the case of the above equality it is possible to describe the orientation dependence of the peak temperature Tp of the temperature anomaly of the yield stress in single crystals of Ni3Ge.
      
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The curing reaction of two kinds of UF resins has been studied, namely, for plywood (F/U=1.7) and for particleboard (F/U=1.63), in the presence of NH_4Cl hardener The result shows that there is a clear exothermic peak below 100℃ with NH_4Cl. The temperature of the. peak (Tp) hardly changes at a definite time range, bout the exothermic heat (ΔH) and the height of the peak lower with time The Tplowers and the height of the peak rises with increase of NH_4Cl amount, when the amount is about 1.5%(based dry resin)both...

The curing reaction of two kinds of UF resins has been studied, namely, for plywood (F/U=1.7) and for particleboard (F/U=1.63), in the presence of NH_4Cl hardener The result shows that there is a clear exothermic peak below 100℃ with NH_4Cl. The temperature of the. peak (Tp) hardly changes at a definite time range, bout the exothermic heat (ΔH) and the height of the peak lower with time The Tplowers and the height of the peak rises with increase of NH_4Cl amount, when the amount is about 1.5%(based dry resin)both of them are no change.The exothermic peak is concerned with the disappearance of the group-CH_2OH, and then a primary curing reaction of UF resin takes place. The curing reaction order is 1.5, the active energy is 80 KJ/mol with 1.7% NH_4Cl (based dry resin) according to kissinger's method by DSC.

应用差示扫描量热法(DSC)研究表明,液体脲醛树脂加入氯化铵后,在敞开体系中,温度在100℃前出现明显的放热峰,峰顶温度在一定的放置时间内不变,对应的放热量有下降的趋势;峰顶温度和峰高随氯化铵增加而变化,在氯化铵用量到达1.5%左右时(以固体树脂计),二者均不再变化。作者认为,放热峰对应于树脂的初步固化,与羟甲基消耗有关。采用Kissinger方法求出反应的活化能为80±3KJ/mol,反应级数1.5。

The effect of curing agent in E-PCE resin matrix on temperature and heat of the curing reaction were studied by means of differential scanning calorimetry(DSC). The kinetic parameteres of the curing reaction were obtained, with the apparent activition energy being 81. 27 kJ/mol, and the curing reaction order being 0. 90.

利用差示扫描量热法研究了环氧封端酚酞聚芳醚腈(简称E-PCE)中固化剂类型对E-WCE树脂固化反应温度、反应热的影响,结果表明,固化剂与E-PC E树脂反应的活性为MDA>DDE>DDS;E-PCE/DDS体系的最低固化反应温度为163.2℃,固化反应峰顶温度为228,1℃,固化反应表观活化能为81.27kJ/mol,固化反应级数为0.90。

Thermal behavior calcium lignosulfonate was studied by differential scanning calorimetry(DSC),thermogravimetry(TG) and heated infrared spectroscopy.Three main changes of the calcium lignosulfonate were observed during a change of temperature from room temperature to 400℃.The first change relating with removing of water and aldehyde took place at a lower temperature.The peak temperature of the second change is about 300℃,and is probably due to a condensation occurred at the high temperature.The third change closely...

Thermal behavior calcium lignosulfonate was studied by differential scanning calorimetry(DSC),thermogravimetry(TG) and heated infrared spectroscopy.Three main changes of the calcium lignosulfonate were observed during a change of temperature from room temperature to 400℃.The first change relating with removing of water and aldehyde took place at a lower temperature.The peak temperature of the second change is about 300℃,and is probably due to a condensation occurred at the high temperature.The third change closely following the second change was thermal decomposition of the calcium lignosulfonate.It was also suggested that the heat history of calcium lignosulfonate could be deduced from its heated DSC curves.

采用差示扫描量热分析 (DSC)、热重分析 (TG)和升温红外光谱研究木质素磺酸钙的热行为 ,发现在室温到 40 0℃的范围内 ,木质素磺酸钙有三个主要的转变。第一个转变发生在较低温度范围内 ,可能与木质素磺酸钙的脱水和甲醛等小分子的反应相关 ;第二个转变的转变峰顶温度在 30 0℃附近 ,与木质素的高温缩合反应相关 ;第三个转变为热分解反应 ,与第二个转变紧密相接。文章认为 ,由木质素磺酸钙的升温DSC曲线可以大致了解其热历史

 
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