查询词典 butadiene

The method of determination of trace acetonitrile in the extract of butadiene is introduced.

作为顺丁橡胶生产的原料，工艺控制要求丁二烯中检不出乙腈。

The study analysed levels of the toxicants butadiene and acrolein in urine, as well as looking for physiological markers of inflammation, oxidative stress and cardiovascular risk.

这项研究分析了尿液中丁二烯和丙烯醛的浓度，同时也寻求炎症，氧化应激和心血管疾病风险的生理性的生物标记物。

The water lubricant mechanism of acrylonitrile butadiene rubber beating was analyzed and studied systematically.

应用力化学的观点和原理对丁腈橡胶轴承的磨损机理进行了研究，得出了橡胶轴承磨损过程中表面所发生的主要化学过程。

It is studied the particle diameter of polymer butadiene latex is effected of dissimilar agglutinant.

研究了不同附聚剂对聚丁二烯胶乳粒径的影响。

Part 2. Annulation reaction of 3, 4-dichlorocoumarin (1) and 3, 4-dichloromaleimide (8) by a new general annulation strategy developed in this group with 2-phenylbenzofuran (15), 3-phenylbenzofuran (16), 2, 5-diphenyloxazole (17), 2, 5-diphenylthiazole (18), 2-methyl-4-phenylthiazole (19) and 2, 3-dimethoxy-1, 3-butadiene (40) were investigated.

二。在本课题组前一阶段提出的从二氯代环烯酮与1，1-二芳基乙烯的光化反应以及光化反应中得到的环丁烷产物的连续电环化反应对3，4-二氯马来酰亚胺以及3，4-二氯香豆素进行增环反应的工作基础上，研究了3，4-二氯香豆素（1）和3，4-二氯马来酰亚胺（8）与5个α-苯基取代的环烯烃2-苯基苯并呋喃（15），3-苯基苯并呋喃（16），2，5-二苯基噁唑（17），2，5-二苯基噻唑（18），2-甲基-4-苯基噻唑（19），以及一个丁二烯——2，3-二甲氧基丁二烯（40）进行的芳香族增环反应。

The elastomer material of most rubber seals (Section 6.3.2) is acrylonitrile butadiene rubber also known as nitrile rubber or buna N. For seals which are exposed to special thermal or chemical conditions, more expensive rubber grades may be required.

大部分的弹性体材料生产橡胶密封6.3.2丙烯腈顺丁橡胶也被称为丁腈橡胶或buna是：暴露于特别热或化学条件，更昂贵的橡胶级别也是可能被要求的。

Of 35 kt / a 1,3 - butadiene separation device design process.

对35 kt/a 1，3-丁二烯分离装置进行工艺设计。

In this paper,the agglomeration of polymer butadiene latex being caused by a , B -unsaturated carboxylate latex is studied,the particle diameter of polymer butadiene latex was agglutinated from 170nm~180mn to300nm~330nm..

本文主要研究了用α，β-不饱和羧酸共聚胶乳作附聚剂对PB胶乳进行附聚反应，使聚丁二烯胶乳平均粒径由原来的170nm～180nm附聚到300nm～330nm。

In the dissertation, a new stabilization method, equal-density method was adopted to prepare modified asphalts with storage stability at high temperature. In this method, a compound was prepared by premixing polymer and filler, and the compound was mixed with asphalt to prepare Polymer-Modified Asphalt by changing the ratio of polymer and filler. The asphalts with good storage stability were formed with the addition of filler, by regulating the density difference between polymer and asphalt. With identifying the effect of composition factor and the technique conditions on mechanical properties of polymer/filler compound and the molecular distribution of the polymer, identifying the effect of composition factor and the technique conditions on the properties and structure of polymer/filler modified asphalt, Styrene-Butadiene-Styrene copolymer, Low Density PolyEthylene, Styrene-Ethylene-Butadiene-Styrene block copolymer modified asphalts with good storage stability and performance were prepared. Rheological method, gel content analysis and swelling measurement were adopted to elucidate the interaction between the polymer and filler. Filler reduced the difference between the polymer and asphalt with the premixing technique, which led to the improvement of the storage stability of the modified asphalts. The thermo-oxidative aging process of base asphalt and PMA were studied and the effect of antioxidant additives on the base asphalt and PMA were analyzed.

本论文采用等密度方法，即预先混合聚合物与填料制备复合物，复合物在沥青中会吸收油份而溶胀，改变填料的用量从而调节聚合物与沥青的密度差异的方法，制备出高温贮存稳定的改性沥青，并研究了工艺条件和配方因素对聚合物/填料复合物力学和聚合物分子量分布的影响，系统考察了工艺条件和配方因素对聚合物/填料改性沥青性能与形态结构的影响，研制出性能优良、高温贮存稳定的苯乙烯-丁二烯-苯乙烯三嵌段共聚物、氢化SBS、低密度聚乙烯改性沥青，并通过流变学分析方法及凝胶和溶胀测试探讨了聚合物与填料的相互作用，指出经过预混工艺填料改变了聚合物与沥青的密度差异，以此说明聚合物/填料改性沥青高温贮存稳定的原因；研究了基质沥青和聚合物改性沥青热氧老化过程，并分析了抗氧剂对基质沥青及聚合物改性沥青的影响，探讨了抗氧剂提高沥青耐老化性能的原因。

The maximum coupling efficiency of the star styrene-butadiene rubber was 85.93%, obtained when the molar ratio of tin tetrachloride and active chains was 0.2625, tin tetrachloride was added in two portions and with the terminal styrene moiety exchanged for butadiene.

结果表明，四氯化锡的用量和加入方式以及端基转换均对偶联效率有影响，四氯化锡与活性分子链的物质的量比为0.2625，且在转换端基的条件下分2次加入时，所得星型丁苯橡胶的偶联效率最高为85.93%。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。