丁二烯

To illustrate some of the features of the equilibrium phenomenon , let us look at the reaction in which cyclobutene is isomerized to 1.3-butadiene.

为了说明平衡现象，让我们看一下环丁烯异构成1.3一丁二烯的反应。

Kinetics of hydroxyl-terminated polybutadiene/ phenyl isocyanate, bonding agent (BA-5)/PI and antioxidant H/PI were studied in toluene/dimethyl sulphoxide solution. The rate constants and the activation parameters were calculated. The results show that the reactionary rate of these three active hydrogen components decreased in same condition.

分别对端羟基聚丁二烯/苯异氰酸酯，键合剂(BA-5)/PI和防老剂H（N，N'-二苯基对苯二胺）／PI在甲苯／二甲基亚砜混合溶液体系中进行了反应动力学研究，计算了相应体系的反应速率和活化能。

Raffinates, steam-cracked C4 fraction cuprous ammonium acetate extn, C3-5 and C3-5 unsatd

含饱和及不饱和C3-5但不含丁二烯的残油，来自蒸汽裂解C4馏分的

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。

We have many experiences in cryogenic storage, receiving and send-out system and high-pressure storage, receiving and send-out system which apply to liquid oxygen, liquid nitrogen, ethylene, propylene, LPG, VCM, butadiene and molten Caprolactum etc. various kinds of petrochemical products.

我们的团队特别对，应用在高纯度液态气体、液态乙烯、液态丙烯、氯乙烯、液化气、丁二烯、液态己内醯胺等各种原料，所需之超低温(最低零下196℃)存贮系统，接收站及发货站系统，高压存贮系统，接收站及发货站系统，有着非常丰富之经验。

SBS thermoplastic elastomer, rosin, orange essential oil and many other raw materials are used for the synthesis of the adhesive used for food bag complex film.

介绍一种以SBS(苯乙烯-丁二烯-苯乙烯)热塑性弹性体、松香、橙芳香精及多种原料合成的食品袋复合膜用粘合剂的工艺及其特点。

The effects of various oil—extended content on properties of 1, 2—polybutadiene rubber synthesized with titanium catalyst systems (Ti—1, 2—PBR) have been studied.

考察了充油量对钛系i，2—聚丁二烯橡胶加工和使用性能的影响。

The invention adopts polyvinyl resin to substitute vinyl-polybutadiene, thereby decreasing the production cost, and increasing the mechanical property of high melt strength polypropylene resin get by only lead-in acrylics and the smooth finish of the product surface.

本发明采用聚乙烯树脂类代替乙烯基聚丁二烯。降低了生产成本，提高了单纯引入丙烯酸酯类所得的高熔体强度聚丙烯树脂的力学性能和制品表面的光洁度。

Ethane＞ toluene＞1, 3, 5-trimethylbenzene＞methyl isobutyl ketone＞1, 4-Dioxane＞isoprene＞ 1, 2, 4-trimethylbenzene＞cyclohexane＞1, 3-Butadiene＞methyl butyl ketone were the most reactive VOC species in PRD.

化学活性排名前十位的化合物为：乙烯＞甲苯＞1，3，5-三甲苯＞甲基异丁基酮＞1，4-环氧乙烷＞异戊二烯＞1，2，4-三甲苯＞环己烷＞1，3-丁二烯＞甲基丁基酮。

By means of Tyndall effect, electron microscope and ultrafiltration, it was found that the catalyst dispersed in toluene solution existing as colloidal particle sizes was from 1nm to 100 nm. The catalyst belonged to highly dispersed polyphase catalytic system.

通过Tyndall效应、电镜观察和超过滤实验，证明了V3-Al2Cl催化体系在溶有丁二烯的甲苯溶剂中以小颗粒分散，粒径在1～100 nm之间，为胶体催化剂，属于高度分散的多相催化体系。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。