综述了近年来国外关于六甲基二硅烷的合成工艺(还原耦合法、格氏试剂法、电解还原法等);并就其未来的研究方向提出了建议。
The synthesis methods of hexamethyldisilane, such as reductive coupling reaction, Grignard reagent alkylation, electrochemical reduction et al, were recounted in details.
这个过程包括以二氧化钛反应润滑脂或硅烷、硅酸几分钟。
The process involves taking titanium dioxide and treating it with silica, silicone grease or silicic acid for a few minutes.
本方法简单、反应周期短、产率高,得到纯度达98%的甲基环己基二甲氧基硅烷产品。
The method simple, the reaction period short and the productive rate high. The purity of the product can reach 98%.
结果表明,使用环己基- 甲基-二甲氧基硅烷,聚合物的等规度可调性好;
With cyclohexyl methyl dimethoxy silane(CHMMS) as external donor, isotacticity of polymer turned to be more adjustable.
采用正交实验设计研究了反应温度、升温速率、二乙烯基苯的质量分数、裂解温度和保温时间五个因素对聚碳硅烷产率的影响。
Based on orthogonal design, the effects of reaction temperature, heating speed, weight percent of DVB, pyrolysis temperature and heat retaining time on the yield of PCS were discussed.
以硅烷偶联剂KH550为桥梁,利用酰胺化反应将改性的HBPE(记做MHBPE)接枝到超细二氧化钛表面。
By use of silane coupling agent KH550 the modified HBPE (MHBPE) was grafted onto the surface of ultrafine titanium dioxide by amidation reaction.
考察了硅烷偶联剂KH-550在聚丙烯(PP)/酸式二溴新戊二醇磷酸二酯(PEA)复合体系中的增容作用。
The effect of silane coupling agent KH-550 as a compatibilizer in polypropylene (PP)/phosphate ester dibromoneopentyl glycol acid (PEA) composites was studied.
研究了二苯基二氯硅烷与双酚-A在等克分子比条件下的缩聚反应动力学。
The kinetics of the polycondensation between diphenyl-dichlorosilane and bisphenol-A in equal mole ratio has been studied.
新增塔投入运行后,经二甲基二氯硅烷的纯度、水裂解工序的操作性及产品质量等指标验证,达到了预期的效果。
When new tower put into use, verifying the purity of dimethyldichlorosilane, operability of hydrolyzed and cracked process and product quality, it got the desired results.
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.
研究了固载液相铂催化剂的制备及其在3-氯丙烯与甲基二氯硅烷硅氢加成反应中的催化性能;
The preparation of supported liquid-phase platinum catalyst, and its catalytic property for hydro-(silylation) reaction of 3-chloropropene were studied.
提出了由二苯基二氯硅烷与甲醇一步反应制得高效催化助剂DDS的新工艺。
A one-step process of synthesis of high-effective catalytic promotor DDS from diphenyldichlorosilane and methyl alcohol was put forward.
采用表面经过硅烷偶联剂原位修饰的纳米二氧化硅增强硅橡胶。
A novel nano-silica surface-modified by silane was used as a reinforcing filler for HTV(heat vulcanization) silicone rubber.
列举了常见的二氧化硅化学改性方法,其改性剂主要有醇、有机硅化合物、聚合物、硅烷偶联剂。
General chemical modification methods were given. The general modifiers include alcohol, organosilicon compound, polymer and silane coupling agent.
本文主要是以二乙酰氧基硅烷与二元羧酸进行缩聚反应,合成了一系列聚硅基酯。
This paper reports the synthesis of a series of poly (silyl ester)s by diacetoxylsilane with several dicarboxylic acid.
考察了温度、催化剂用量、加料速率等因素对苯乙烯与甲基二氯硅烷硅氢加成反应的影响。
The effects of temperature, the quantity of catalyst used, and reactant feed rate on hydrosilylation was discussed.
在纳米级二氧化钛载体上的铂催化剂,其在氢化硅烷化中的应用,使用该催化剂的氢化硅烷化方法以及包括该催化剂的组合物。
Platinum catalysts that are supported on nanoscale titanium dioxide, use thereof in hydrosilylation, hydrosilylation method using said catalysts and compositions comprising said catalysts.
以自然放置法和正交实验法考察了二苯基二甲氧基硅烷的稳定性。
The stability of dimethoxydiphenylsilane (DDS) in natural placement and orthogonal experiments was studied.
本文以研究二茂铁硅烷的硅氢化反应作为重点,以期通过硅氢化反应来解决二茂铁衍生物作为燃速催化剂在固体推进剂中的迁移问题。
This thesis is focused on the hydrosilylation of ferrocenylsilanes, expecting to solve the problem of migration of ferrocene derivatives as combustion catalyst in solid propellant.
以正硅酸乙酯为原料,经溶胶-凝胶过程制备二氧化硅溶胶,再利用二甲基二乙氧基硅烷(DDS)对其进行改性,制备了疏水性二氧化硅凝胶。
Hydrophobic silica gel was prepared by sol-gel process using tetraethoxy silicone(TEOS) as raw material, then the surface was chemically modified by diethoxydimethylsilane(DDS).
研究了由聚二甲基硅烷热解制备聚碳硅烷的过程,探讨了合成条件对产物特性的影响。
Preparation of polycarbosilane (PCS) by pyrolysis of polydimethylsilane has been investigated. Effect of synthesis condition on the properties of products was studied.
溶胶— 凝胶法制备超疏水薄膜,加入胶体二氧化硅粒子和氟硅烷控制薄膜表面粗糙度和表面化学性质。
Super-hydrophobic silica-based thin films were prepared by sol-gel processing. Both surface energy and roughness were controlled using colloidal silica particles and fluoroalkylsilane.
实验研究了直接法流化床合成甲基氯硅烷过程中反应温度对反应活性和二甲基二氯硅烷(DDS)选择性的影响。
The effect of reaction temperature on reaction activity and selectivity of dimethyl dichlorosilane (DDS) in direct synthesis process has been investigated experimentally.
甲基二烯丙基硅烷是一种重要的有机硅中间体,采用甲基三乙氧基硅烷和烯丙基氯通过格式反应制得。
Diallylethoxylmethylsilane is an important silicone intermediate. It was prepared by reaction of methyltriethoxylsilane with allyl chloride grignard reagent.
本发明公开了一种色彩加深剂,所述色彩加深剂包含采用具有氨基 的硅烷偶联剂在酸性条件下处理的二氧化硅微粒和聚醚改性的聚硅氧 烷。
Disclosed is a color deepening agent containing silica particles which are treated with a silane coupling agent having an amino group under acidic conditions and a polyether-modified polysiloxane.
对多孔硅进行氧化、硅烷化、戊二醛交联剂和抗体共价结合处理,制备出生物免疫传感器。
The structure of immunosensor is prepared by the following steps: oxidization, silanization, glutaraldehyde cross-linker, and covalent binding of antibody.
单独收集二级三氯氢硅可降低生产能耗,避免二级三氯氢硅与原料氯硅烷之间的交叉污染。
The single collection of the secondary trichlorosilane can reduce production energy consumption and avoid the cross contamination between the secondary trichlorosilane and raw chlorsilane.
讨论了不同四甲氧基硅烷(TMOS)与聚乙二醇(PEG)配比、老化条件、陈化时间对硅胶柱的影响,并采用SEM、BET、强度测试等手段对其结构进行表征。
The effects of TMOS/PEG ratios and aging conditions on the pore structure were investigated and the prepared samples were characterized by SEM, BET and hardness tester.
产物是双键经过重排的取代烯丙基二甲基甲氧基硅烷6—10,该产物可进行一系列亲电取代反应。
The rearrangement of allylic double bond took placed in the course of these reaction. 6—12 are able to undergo a lot of electrophilic substitution reaction.
产物是双键经过重排的取代烯丙基二甲基甲氧基硅烷6—10,该产物可进行一系列亲电取代反应。
The rearrangement of allylic double bond took placed in the course of these reaction. 6—12 are able to undergo a lot of electrophilic substitution reaction.
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