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纯胶
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  purity gum
     Preparation and Study on Application of Starch Ester Octenyl Succinate (Purity Gum)
     辛烯基琥珀酸淀粉酯(纯胶)的研制和应用研究
短句来源
     Purity gum and emulsified flavor
     纯胶与乳化香精
  “纯胶”译为未确定词的双语例句
     The net production ofRA system is 24. 232 t/hm2 a, 1. 88 times of PP system.
     胶砂间作林年均净生产量为24.232t/hm2,是纯胶林的1.88倍。
短句来源
     The accumulation of ten nutrient ele-ments of RA system at tree layer was 2214. 22 kg/hm2, which was 1. 46 times of PP system.
     乔木层10种营养元素的积累量胶砂间作林为2214.22kg/hm2,纯胶林为1511.71kg/hm2,间作林是纯胶林的1.46倍。
短句来源
     The effects of blend loading and particle size of waste rubber powder on the rheological and mechanical properties of SBR compounds were investigated .
     研究了废橡胶胶扮掺混量和粒度对度胶粉/SBR纯胶胶料和废胶粉/SBR炭黑胶料的流变性能和力学性能的影响。
短句来源
     Internal mixing properties of polychloroprene rubber (CR with pure gum compound) under different mixing temperature (30 to 50℃) and mixing rotor speeds (30 to 90rpm) were studied using a Brabender torque rheometer.
     利用Brabender转矩流变仪研究了氯丁橡胶(纯胶配合)的密炼机混炼特性。 研究了不同混炼温度(30~50℃)、混炼转速(30~90rpm)下的氯丁橡胶混炼性能。
短句来源
     the physical properties of rubber compound were affected little by using 10 and 20 phr of PVCR instead of equal parts of BR or 15 phr of PVCR instead of equal parts of SBR in whole rubber formula;
     在纯胶配方中以PVCR等量替代 10份NR、2 0份BR或 15份SBR对胶料性能影响不大 ;
短句来源
更多       
  相似匹配句对
     Purity gum and emulsified flavor
     与乳化香精
     Optimizing the Factors in the Esternization of Starch Sodium Alkenyl Succinate
     酯化反应条件的优化
短句来源
     THE WHITE PHENOMENA
     白色
短句来源
     F-pure Submodules
     F-子模
短句来源
     PVC Flock Adhesive
     PVC植绒
短句来源
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1. The effect of some transition metal salts upon the rate of oxygen-absorption by cis-polybutadiene has been studied; the salts used were acetylacetonates of Co++, Cu++, Fe+++, Mn++ and Ni++. The results show that the relative catalytic activities of these compounds depend on their cationic redox potential in the order: Co++ > Mn++ > Fe+++ > Cu++ and Ni++. It was also found that as the concentration of the salts is increased, the initial rate of oxygen-absorption is also increased, while the maximum rate is...

1. The effect of some transition metal salts upon the rate of oxygen-absorption by cis-polybutadiene has been studied; the salts used were acetylacetonates of Co++, Cu++, Fe+++, Mn++ and Ni++. The results show that the relative catalytic activities of these compounds depend on their cationic redox potential in the order: Co++ > Mn++ > Fe+++ > Cu++ and Ni++. It was also found that as the concentration of the salts is increased, the initial rate of oxygen-absorption is also increased, while the maximum rate is only accelerated by Co++, but inhibited by Cu++ and nearly unaffected by Fe+++ and Ni++.2. Comparison has been made between the effects of bivalent cobalt salts: cobalt halides, stearate, and acetylacetonate, upon the oxygen-absorption rate. It was shown that the relative catalytic activities of different halides are similar to each other, but are slightly less active than the two organic salts. The effect of cobalt acetylacetonate on the maximum rate is slightly greater than that of cobalt stearate. Furthermore, it was also found that the maximum rate of oxygen-absorption is proportional to the square root of the concentration of these cobalt salts within the temperature range from 60° to 80℃. The apparent activation energy of the initial stage was found to be decreased by cobalt salts from 20 kcal/mole for the raw polymer to 16 kcal/mole; but that of the maximum rate was not affected, the value of which was 14 kcal/mole.3. The effects of four binary mixtures, acetylacetonates of Co++-Fe+++,Co++-Cu++, Co++-Ni++, and Fe+++-Cu++, on the rate of oxygen-absorption have also been investigated. It was found that with the exception of the Co++-Ni++ system, all the rest showed that the more active component was inhibited by the less active one. Meanwhile, the inhibition effect depended markedly upon the molar ratio of the two components in two different ways, one with an optimum value and the other with a limiting value. Moreover, as the molar ratio was increased to 1 :10, the effect of the Co++-Fe+++ system was synergistic, i.e. the value being greater than additive.

1.比较了乙酰基丙酮Co~(++)、Cu~(++)、Fe~(+++)、Mn~(++)、和Ni~(++)对顺-1,4-聚丁二烯吸氧速率的影响,得到这些化合物的相对催化活性与它们的阳离子的氧化-还原势有关,这两者的顺序完全一致,即 Co~(++)>Mn~(++)>Fe~(+++)> Cu~(++)及 Ni~(++)。同时还发现,随着这些变价金属盐浓度的增大,所有这些变价金属盐均对起始吸氧速率有加速作用,但程度各有不同,即按上述顺序排列。对最高吸氧速率只有钴盐具有明显加速作用,铁和镍盐则几乎没有什么影响,铜盐主要表现为阻化效应。 2.比较了各种卤化钴如二氯化钴、二溴化钴、二碘化钴、硬脂酸钴和二乙酰基丙酮钴对顺-1,4-聚丁二烯吸氧速率的影响。结果表明,所有卤化钴彼此间的相对催化活性几乎没有什么差别,但其活性要略小于两种有机钴盐。至于二乙酰基丙酮钴与硬脂酸钴之间的差别,则对于最高吸氧速率的影响前者略高于后者。此外还发现,当实验温度在60°至80℃范围内时,最高吸氧速率与这三种钴盐浓度的平方根成正比。在所指的温度范围内,这些钴盐可降低起始吸氧阶段的表观活化能(由纯胶的20千卡/克分子降至16千卡/克分子),...

1.比较了乙酰基丙酮Co~(++)、Cu~(++)、Fe~(+++)、Mn~(++)、和Ni~(++)对顺-1,4-聚丁二烯吸氧速率的影响,得到这些化合物的相对催化活性与它们的阳离子的氧化-还原势有关,这两者的顺序完全一致,即 Co~(++)>Mn~(++)>Fe~(+++)> Cu~(++)及 Ni~(++)。同时还发现,随着这些变价金属盐浓度的增大,所有这些变价金属盐均对起始吸氧速率有加速作用,但程度各有不同,即按上述顺序排列。对最高吸氧速率只有钴盐具有明显加速作用,铁和镍盐则几乎没有什么影响,铜盐主要表现为阻化效应。 2.比较了各种卤化钴如二氯化钴、二溴化钴、二碘化钴、硬脂酸钴和二乙酰基丙酮钴对顺-1,4-聚丁二烯吸氧速率的影响。结果表明,所有卤化钴彼此间的相对催化活性几乎没有什么差别,但其活性要略小于两种有机钴盐。至于二乙酰基丙酮钴与硬脂酸钴之间的差别,则对于最高吸氧速率的影响前者略高于后者。此外还发现,当实验温度在60°至80℃范围内时,最高吸氧速率与这三种钴盐浓度的平方根成正比。在所指的温度范围内,这些钴盐可降低起始吸氧阶段的表观活化能(由纯胶的20千卡/克分子降至16千卡/克分子),但不影响最高吸氧阶段的表观活化能(纯胶及含钴盐的橡胶均为14千卡/克分子)。 3.研究了乙酰基丙酮 Co~(++)—Fe~(+++),Co~(++)—Cu~(++),Co~(++)

The polymer-solvent interaction parameter μ for poly (cis-1, 4-butadiene) was determined by stress-strain measurements of swollen gum and black vulcanizates. It is found that μ is a function of vr, μ = μ0+ βvr. The μ0 valuethus obtained is consistent with those determined by osmometry and light-scattering. The effective network chain densities of vulcanizates with different degree of curing were calculated by Flory-Rehner equation. The influence of effective network chain density for poly (cis-1, 4-butadiene)...

The polymer-solvent interaction parameter μ for poly (cis-1, 4-butadiene) was determined by stress-strain measurements of swollen gum and black vulcanizates. It is found that μ is a function of vr, μ = μ0+ βvr. The μ0 valuethus obtained is consistent with those determined by osmometry and light-scattering. The effective network chain densities of vulcanizates with different degree of curing were calculated by Flory-Rehner equation. The influence of effective network chain density for poly (cis-1, 4-butadiene) on vulca-nizate properties, such as tensile stress at 300% elongation, tensile strength, tear strength, ultimate elongation and so on were studied.

本文用顺丁橡胶的纯胶硫化胶和炭黑硫化胶,通过溶胀-拉伸实验,测定了顺丁橡胶的高聚物-溶剂相互作用参数μ.结果表明μ是溶胀网络中橡胶体积分数v_r的函数μ=μ_o+βv_r.得到的μ_o.值与在稀溶液中(v_r→0)用渗透压、光散射法得到的μ_o值很接近.不同v_r时μ值的求得,为测定顺丁橡胶硫化胶的有效网链密度提供了途径.并深入研究了硫化胶的有效网链密度对300%定伸强度、抗张强度、抗撕裂、伸长率、硬度、弹性、静态模量和动态模量等重要性质的影响.

In this paper, we used pure gelatin made in China to prepare silver halide emulsion. The orthogonal design was applied in experiments to determine the best proportion of chemical sensitizers in the emulsion. When gold, sulfur and sodium sulfite were employed to serve as chemical sensitizers, a suitable technique must be adopted. Under the same conditions of exposure and development, the sensitivity increased from S=16 DIN to S=25 DIN. Meanwhile, referring to the best proportion of gold, sulfur and sodium sulfite...

In this paper, we used pure gelatin made in China to prepare silver halide emulsion. The orthogonal design was applied in experiments to determine the best proportion of chemical sensitizers in the emulsion. When gold, sulfur and sodium sulfite were employed to serve as chemical sensitizers, a suitable technique must be adopted. Under the same conditions of exposure and development, the sensitivity increased from S=16 DIN to S=25 DIN. Meanwhile, referring to the best proportion of gold, sulfur and sodium sulfite and using stannous chloride in place of sodium sulfite. The sensitivity can also be increased to 24.7 DIN Therefore, in order to get better photographic properties we could utilize the orthogonal design in experiments to find out the best proportion of chemical sensitizers. The results are satisfactory.

本文中应用了国产纯胶制备卤化银乳剂并运用正交设计的方法确定了乳剂中化学增感剂用量的最佳配比。当选用金、硫、亚硫酸钠作为化学增感剂时,通过采用合适的工艺方法,在相同的曝光、显影条件下,胶片的感光度从原配方的S=16DIN增加到S=25DIN。另外,参照金、硫、亚硫酸钠的最佳配比,用氯化亚锡代替亚硫酸钠,感光度也达到了S=24.7DIN。由此可见,为了得到较佳的照相性能;可运用正交试验来研究化学增感剂之间的配比,其结果是令人满意的。

 
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