乙烯基
- 与 乙烯基 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The Solidification temperature range was defined as 110-200℃ by DSC analysis. More accelerant used can increase the casing samples dynamic performance, but more than enough accelerant can induce a severe solidified reaction that result in a smaller polymeric meshwork and reducing the sample's performance. Normally the Accelerant dosage can be 2 portions; The Epoxy resin CFRP has a obvious better performances than the Vinyl-ester Resin CFRP, i.e. had a Bend Strength of 1516MPa, LSS of 85MPa, also Tg raised to 195~C~ When used the end-carboxyl polyether to reinforce the epoxy resin, the casing sample's SS, BS and Crack Elongation all increased geminately. The CFRP performance also increased a little, that is because the performance of the CFRP mainly contributed by the CF. The reinforced resin improved the interface between the CF and resin that contribute to the little increasing.
通过DSC分析确定了该环氧树脂的固化温度范围为110~200℃,促进剂增加会提高浇注体力学性能,但过多的促进剂会使固化反应剧烈,聚合网络减小,使浇注体性能下降,一般用量为2份左右;以环氧树脂为基体的复合材料性能明显比以乙烯基酯树脂的性能提高,弯曲强度达到1516MPa,层间剪切强度达到85MPa,同时Tg也上升到195℃;用端羧基聚醚增韧环氧树脂后,其浇注体的拉伸强度、弯曲强度及断裂伸长都成倍增加,复合材料的性能也有所提高,但提高幅度不大,因为复合材料的力学性能主要由碳纤维承担,树脂增韧后改善了复合材料的界面性能。
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A new functional electroluminescent copolymer is reported in which chromophores and hexa segments alternate along the polymer backbone.
采用Wittig反应合成了一种分子主链由烷氧基取代的1,4二苯乙烯基苯聚对亚苯基亚乙烯基(PPV的三个单元的齐聚物与柔性隔离链段五缩六乙二醇组成的交替型蓝绿色发光共聚物。
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Three series of donor-acceptorπ-conjugated molecules 1, 2, and 3 have been designed and synthesized with a N, N-dimethylamino, Julolidine group (2,3,6,7-tetrahydro-1H, 5H-pyrido[3, 2, 1-ij]quinolinyl), or N, N-diphenylamino group as the donor moiety, a phenylvinyl or thienylvinyl unit as the bridge, and a bromide or aldehyde group as the acceptor moiety.
本文设计并合成了1、2、3三个系列的D-π-A型化合物(Donor-Acceptorπ-conjugated compounds),在化合物分子中引入久洛尼啶基团(2,3,6,7-tetrahydro-1H,5H-pyrido-[3,2,1-ij]quinolinyl),N,N-二甲基氨基,或N,N-二苯基氨基为供电子基团,以苯乙烯基或噻吩乙烯基为桥链,以溴原子或醛基为吸电子基团。
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N -(4-vinyl)benzylimidazole and its copolymer with octyl methacrylatewere synthesized and characterized,and oxygen—binding properties of cabaltporphyrincomplexes with imdazole ligands were studied.
研究了 N -(4-乙烯基)苄基咪唑单体及其与甲基丙烯酸辛酯共聚物的合成与表征,以及咪唑基有机或聚合物配位体与钴卟啉络合物的氧结合性能。
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A new compound,3-_6-{4-(4-vinylene)pyridyl} stilbenyl}-N-ethylcarbazole was synthesized,and characterized by elemental analysis,IR,MS and ~(1)H NMR spectra.
报道一种新型的D-π-D-π-A结构的化合物:3-(4-溴苯乙烯基)-6-[(4-乙烯基吡啶)苯乙烯基]-N-乙基咔唑的合成。
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Two azobenzene-containing polyethers were synthesized and their thermotropic liquid crystalline properties were investigated.
氯乙基缩水甘油醚和GCE/羟丁基乙烯基醚分别通过阳离子聚合、光引发共聚合,获得两种聚醚,然后再分别与 4-硝基-4' -羟基偶氮苯反应,制备了两种侧链含偶氮苯生色团的液晶聚合物。
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In chapter four, molecular imprinting polymers against amino acid derivatives utilizing 2-VP+AM as combined functional monomer and trimethylolpropane trimethacrylate as tribasic cross-linker were prepared and result was compared with those with the same amino acid derivative as the imprinted molecules utilizing ethyleneglycol dimethacrylate as dibasic cross-linker. It was found that cross-link intensity of the molecular imprinting polymer is higher when TRIM was utilized and baseline separation for the imprinted molecule could be achieved. When TRIM was utilized as cross-linker more molecule is imprinted during the polymerization.
第四章采用2-乙烯基吡啶+丙烯酰胺复合功能单体,考察了三元交联剂三甲氧基丙烷三甲基丙烯酸酯烙印氨基酸衍生物的情况,并与二元交联剂乙二醇二甲基丙烯酸酯烙印相同氨基酸衍生物的情况进行了对比,发现三甲氧基丙烷三甲基丙烯酸酯交联剂在较小的用量下就可使分子烙印聚合物达到足够的交联度,实现烙印分子的基线分离。
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In order to improve the hole mobility, a novel conjugated polymer DOTPAV-PT with triphenylamine unit in the side chain was synthesized and characterized in details, and the photophysical and electrical properties were investigated .
为提高聚噻吩衍生物的空穴迁移率,将空穴传输基元三苯胺引入到聚合物结构中,合成一种侧基为三苯胺乙烯基的聚噻吩衍生物DOTPAV-PT,并对其进行详细的表征和光物理性质及电性能研究。
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The results showed that the addition leading to -2-phenyl-2-(2-vinylpiperidin-1-yl) ethanol 7 could proceed with good diastereoselectivity and excellent yield (95%).(3) The selective N-deprotection of -2-phenyl-2-(2-vinylpiperidin-1-yl) ethanol 2 without affecting the vinyl group in the substrate were untaken.(4) The Zip reaction for the transformation of -1-(3-aminopropyl)-3-methylazecan-2-one 8 to -7-Methyl-1, Sdiaza-cyclotetradecan-6-one 9 were undertaken. The results showed that, under controlled conditions, acceptable yields (43%) could be achieved and racemization can be minimized during the ring expansion reaction.
该合成路线与文献方法相比,反应条件较温和,也缩短了反应时间;(2)哌啶衍生物2与乙烯基格氏试剂进行加成反应的条件和立体选择性,取得了较好的结果(差向异构体比为80:20,产率95%左右);(3)不饱和哌啶衍生物7在不影响碳碳双键的情况下去除苯基甘氨醇手性辅助基的条件;(4)具有羰基α位手性的氨基酰胺8在不同条件下经Zip重排反应转变为9的反应,控制反应条件,可使反应中消旋化减小到最小的程度。
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The devices of sandwiched structure were prepared by compounding poly[2-methoxy-5-(2-ethyl-hexyloxy)-l,4-phenylene vinylene] with SiO_2. The thickness of MEH-PPV of these devices are different. We found the suitable frequency of drive voltage to obtain the greatest brightness. The device of cascade structure was prepared based on this work.
采用共轭高分子聚2-甲氧基-5-(2′-乙基-己氧基)-1,4-亚苯基亚乙烯基与SiO_2制成夹层结构器件,研究了不同发光层厚度的器件的发光特性,发现长波峰的发光强度随驱动电压频率的增大而增强、短波峰的发光强度随驱动电压频率的增大而减弱,进一步分析了其机理。
- 推荐网络例句
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The split between the two groups can hardly be papered over.
这两个团体间的分歧难以掩饰。
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This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.
这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。
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The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力