实验发现,芪,1,4-二苯基1,3-丁二烯等多聚烯化合物的非共振双光子(NRTP)异构化强烈地依赖于光波长。
The efficiency of the non resonant two photon (NRTP) isomerizations of stilbenes and 1,4 diphenyl 1,3 butadienes was found to depend strongly on the wavelength of the laser pulses.
先穿一层薄的化纤衣料比如聚苯烯,这样可以吸收身上的汗。
Start with a thin layer of synthetic material such as polypropylene, which wicks sweat from your body.
它将点燃固体推进燃料(HTPB,或称羟基封端聚丁二烯)和液体氧化剂(高挥发性过氧化物,HTP)的混合物持续20秒。
It will burn a mixture of solid propellant (HTPB, or hydroxyl-terminated polybutadiene) and liquid oxidiser (high-test peroxide, HTP) for 20 seconds.
聚二烯基本分子结构是一良好的燃烧剂。
The polydiene basic molecular structure is an excellent fuel.
随着反应条件的不同,产物可以是由烯酮的双键加成聚合得到的聚酮。
Depending upon reaction conditions, the product may be a polyketone formed by addition polymerization of the ketene double bond.
新方法允许范围广泛的聚类似物,以获得在几个步骤,作为烯前体是现成的。
The new methods allow a wide range of poly analogs to be obtained in few steps, as the allylic precursors are readily available.
用实验分析验证了丁二烯系统自动爆炸的原因,即氧气进入系统形成了丁二烯聚过氧化物。
The cause for automatic explosion in butadiene systems, that is the formation of butadiene polyperoxide due to the entry of oxygen into the system, is verified through experiments.
低分子聚丁二烯是一种精细化工产品,用途广泛。本文就该技术的开发过程进行总结。
Low molecule polybutadiene, a kind of fine petrochemical, is extensively used. Development of its production technology is summarized in the article.
介绍了抚顺乙烯化工有限公司丁二烯的储存现状,分析了丁二烯的特性和其自聚物形成的条件。
The storage actualities of butadiene in Fushun ethylene co. Ltd. is introduced. In the paper, the characteristics of ethylene and formation condition of its autopolymer are analyzed.
均聚物的例子有单体为异戊二烯的天然橡胶以及单体为乙烯的聚乙烯。
Examples of homopolymers are natural rubber, whose monomer is isoprene, and polyethylene, whose monomer is ethylene.
本工作用动态力学、介电松弛和固态核磁共振等方法研究了1,2-聚丁二烯的多重转变和松弛。
The investigation on the multiple transitions and relaxations of 1,2-polybutadiene was carried out by dynamic mechanical, dielectric relaxation, and solid state NMR methods.
烷基烯酮二聚体(akd)的中(碱)性施胶系统中,腐浆及沉积物的产生和积累是产生纸张脏点、破洞,甚至引起断头等质量问题的主要原因。
Formation and accumulation of slimes and deposits are the major reasons inducing paper quality problems such as dirty spots, broken holes, and even cause the broken of paper in AKD sizing system.
本文研究了在高压汞灯照射下,二苯甲酮和3,4 -聚异戊二烯间的能量传递机理。
This paper studied the energy transmission mechanism between benzophenone and 3, 4-polyisoprene which were irradiated by high pressure Hg lamp.
介绍了液体聚丁二烯的结构、化学特性及在涂料工业中的应用。
The structure, chemical properties and applications in coating industry of LPB have been introduced in this paper.
通过研究磺化反应的动力学和对磺化产物的分析测试,提出磺化发生在聚丁二烯的双键上新观点。
The sulfonating reaction was found on the unsaturation bonds of polybutadiene basing on the research of dynamics of the sulfonating action and FTIR analysis of reacted products.
研究了在超声波辐照作用下聚丁二烯(PB)在环已烷溶液中的降解及与丙烯酸(AA)的共疑反应。
The ultrasonic degradation of polybutadiene (PB) and block copolymerization of PB with acrylic acid(AA)in cyclohexane solution were studied.
本工作研究了1,2-聚丁二烯(PB)与天然橡胶(NR)等量并用的共混胶的性能。
The properties of the blends of 1,2-polybutadiene ( PB ) and natural rubber ( NR ) at equal loading were studied.
将端羟基聚丁二烯与聚氨酯进行共混改性,提高了聚氨酯基体的表观交联度及推进剂的拉伸强度。
When blend modification of HTPB and PU are done, the apparent crosslinking density of PU matrix in - creases, and the tensile strength of propellant enhances.
介绍了聚氧乙烯基烯丙酯大单体和聚羧酸减水剂的合成,并对合成的聚羧酸减水剂进行了性能考察。
Acrylate monomer with polyoxyethylene group chain and a series of polycarboxylic superplasticizer were synthesized and their water-reducing effects were investigated.
研究了低相对分子质量反式1,4聚异戊二烯蜡(LMTPIW)在橡胶配方中的应用。
The application of low molecular weight trans 1, 4 polyisoprene wax (LMTPIW) to rubber compound was investigated.
本文对1,2 -聚丁二烯的介电松弛进行了复平面分析。
Complex plane analysis for the dielectric relaxation of 1, 2-polybutadienes was performed.
研究了水相悬浮法合成环氧化反式-1,4-聚异戊二烯(ETPI)的结构与性能。
Structure and property of epoxidized trans-1,4-polyisoprene(ETPI) by water phase suspension method was studied.
我们知道聚丁二烯(PB)胶乳或丁苯(SBR)胶乳的橡胶粒径是控制最终产品抗冲性能和加工性能的重要指标。
It is widely recognized that, in such cases, the particle diameter of rubber (PB latex or SBR latex) greatly governs the impact resistance and processability of the final products.
探讨了烷氧基硅烷封端率及端羟基聚丁二烯的含量对单组分密封胶的力学性能、硬度及表干时间的影响。
The effects of different silane end-capped ratios and HTPB content on mechanical properties, hardness and surface dry time of the sealant were discussed.
分析了低顺式聚丁二烯橡胶(LCPB)的结构和性能特点。
The characteristics of the structure and properties of low cis-polybutadiene (LCPB) were analyzed.
综述聚双环戊二烯聚合机理,反应注射成型技术概况。
The polymerization mechanism of PDCPD and technical survey of RIM are reviewed.
综述羧酸衍生物的烯醇盐氧化二聚成键的规律,重点是立体选择性的过程。
Stereoselective oxidative dimerization of the enolate of carboxylic acid derivatives is summarized focusing on the stereoselectivity of the process.
将合成的聚二烯丙基二甲基氯化铵作为阳离子添加剂应用于彩色喷墨打印纸涂层中并测定成纸的各项性能。
The synthetic product poly-DMDAAC was subsequently prepared based on free radical solutions polymerization, which was then applied as cationic additives in ink-jet paper coating.
文章论述了催化剂结构对丁二烯环三聚反应活性及选择性的影响。
The effects of phosphine ligand and the structure of catalysts on the selectivity and reactivity of the cyclotrimerization were discussed.
文章论述了催化剂结构对丁二烯环三聚反应活性及选择性的影响。
The effects of phosphine ligand and the structure of catalysts on the selectivity and reactivity of the cyclotrimerization were discussed.
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