vinyl group
- 网络乙烯基;乙烯基团
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A thermoplastic derived by polymerization from compounds containing the vinyl group .
一种热塑性塑料,由含乙烯基的化合物聚合而成。
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Determination of vinyl group in silicone rubber by coulometry
用库仑法分析硅橡胶中乙烯基的含量
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MQ resins containing different vinyl group content were synthesized .
合成了不同乙烯基含量的MQ树脂;
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Vinyl group linkage of 0 . 2 % in silicone gum could be determined with good precision .
硅生胶中0.2%的乙烯基测定的精密度为5.5%。
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The Synthesis of Macroporous Styrene-Divinylbenzene Copolymers with Controlled Pendent Vinyl Group and the Studies of their Adsorption Properties
含有悬挂双键的苯乙烯&二乙烯苯大孔共聚物的合成及吸附性能研究
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Study on the radiation crosslinking of silicone rubber ⅲ . the relationship between sol fraction and dose and the enhancement effect of vinyl group
硅橡胶的辐射交联研究Ⅲ.溶胶分数与剂量的关系及乙烯基的内强化效应
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For samples polymerized from Ni + Mo catalysts systems , branching point is formed through the opening of the double bond of 1,2 vinyl group .
而由Ni+Mo催化体系聚合的试样,可能为1,2-乙烯基的双键打开接长支链。
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The vinyl group in the vinyl ester is a typical ABX system in NMR , other spectral characteristics are the same as in maleopimaric acid .
马来海松酸乙烯酯上的乙烯基在核磁共振谱图中呈现为很好的ABX系统,其他光谱特征与马来海松酸相同。
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Flame-retardant LLDPE / PDMS blends were prepared by melt blending of LLDPE , silicone rubber PDMS containing high content of vinyl group and flame-retarding master-batch .
采用高乙烯基含量硅橡胶(PDMS)与线性低密度聚乙烯(LLDPE)进行熔融共混,并添加阻燃母料,制得LLDPE/PDMS阻燃共混物;
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The silicone-acrylate emulsion and architectural coating were prepared with acrylate and silicone intermediate which was synthesized by vinyl group silicone monomer and cyclo-form silicone monomer .
先将乙烯基有机硅单体及环状有机硅单体在碱催化下,合成有机硅预聚体,再与丙烯酸酯进行共聚制得硅丙乳液及其建筑涂料。
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It was found that , with more dimethacrylate introduced , the crosslinking density increased , which put more restriction to the diffusion of transition metal complex , giving rise to a faster polymerization rate and a higher vinyl group conversion .
研究发现,交联单体用量增加导致交联网络密度增大,过渡金属络合物的扩散受阻严重,从而使聚合速率和双键转化率都增加;
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While two sorts of ferrocene units appeared in the cationic copolymer : one had a pendent vinyl group which had not taken part in the polymerization , and the other had a cross-linking structure with two alkenyl groups .
而阳离子共聚物的二茂铁单元有两种不同结构:一个烯基未参与聚合反应的悬挂结构(38.9%)和两个烯基分别成链的交联结构(61.1%)。
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The electrophilic reaction of methyl pyropheophorbide-a ( MPP-a ) demonstrates that the electrophilic addition reaction and the electrophilic substitution reaction occur on the vinyl group at 3-position and 20-meso-position , respectively .
焦脱镁叶绿酸a甲酯与溴素的亲电反应表明:在3位乙烯基上发生亲电加成反应,而与20位的meso氢则发生亲电取代反应。
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Acrylic resin containing N , N-dimethyl amino group and vinyl group applicable for UV-curable and cathodic electrophoretic paint was synthesized via radical polymerization of acrylic monomers followed by modification with methacrylic oxyethyl isocyanate ( MOI ) .
通过自由基共聚合得到丙烯酸树脂,然后用甲基丙烯酸异氰酸乙酯(MOI)对其改性,合成了既带有N,N二甲胺基,又带有乙烯基的紫外光固化阴极电泳漆基体树脂。
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The derivatives of 3-N-substituted and other 3-substituted methyl pyropheophorbide - α were synthesized by modification of vinyl group at 3-position of 2.The structures of all new compounds were characterized by ( ~ 1H NMR ), IR , MS and elemental analysis .
通过对2的3-乙烯基的修饰,获得了3-N-取代类衍生物。新化合物的结构均经1HNMR,IR,MS及元素分析确证。
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The effects of the type and content of vinyl monomer containing polar group on the flame retardance of PP were studied .
着重探讨了含极性基团的乙烯基单体种类及用量等因素对PP阻燃性的影响。
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The introduction of the vinyl monomer containing polar group into PP macromolecular chain could improve the flame retardance of PP obviously .
在PP大分子链上接枝含极性基团的乙烯基单体,可显著提高PP的阻燃性能;
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Glycidyl methacrylate was a vinyl monomer having epoxy group . The polymer poly ( glycidyl methacrylate ) containing epoxy group can be prepared with glycidyl methacrylate by homopolymerization or copolymerization .
甲基丙烯酸缩水甘油酯(GMA)是一种含环氧基的烯类单体,通过均聚合或者共聚合可以制备带有环氧基团的聚合物大分子。
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Studies on the atom transfer radical copolymerization of vinyl monomer and vinyl monomer containing nitroxide group
乙烯基单体与含氮氧稳定自由基单体的原子转移自由基共聚合研究
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The difference mainly depends on distance between the heme vinyl groups and cysteine residues , the vinyl group spatial positioning and their microenvironments .
这种差别主要取决于所引入半胱氨酸与heme乙烯基之间的距离,乙烯基自身的取向,以及各自所处的微环境等因素。
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The results showed that the vinyl ester of disproportionated rosin consisted mainly of vinyl ester of dihydroabietic acid and dehydroabietic acid in 3 : 4 ( wt ), their vinyl group was a typical ABX system in the NMR .
结果表明:国产歧化松香乙烯酯的主要成分是二氢枞酸和脱氢枞酸的乙烯酯,二者重量比为3:4;