Phase inversion emulsion polymerization of octamethylcyclotetrasiloxane 八甲基环四硅氧烷的转相乳液聚合
Polymerization Kinetics of Octamethylcyclotetrasiloxane 八甲基环四硅氧烷聚合动力学
Kinetics of microemulsion polymerization of octamethylcyclotetrasiloxane 硅氧烷的微乳液聚合动力学
The process of the preparation of the kind of emulsion mainly includes two important parts. The first part is emulsion polymerization of polysiloxane, that is, octamethylcyclotetrasiloxane polymerizes into polysiloxane emulsion by means of ring-expansion under emulsion and acid conditions. 制备过程主要包括两部分的内容:第一部分内容是聚硅氧烷乳液的合成,即八甲基环四硅氧烷在乳液状态中,酸性条件下开环聚合制成聚硅氧烷乳液。
Octamethylcyclotetrasiloxane ( D4) and epoxy-contg. siloxane coupling agent were used as raw m-aterials to prep. epoxy-modified silicone emulsion with basic catalyst using emulsion polymn. 以八甲基环四硅氧烷(D4)及含环氧基团的硅烷偶联剂为原料,在碱性催化剂作用下,采用乳液聚合的方法制备了环氧基改性有机硅乳液。
Hydroxy terminated polydimethylsiloxane ( PDMS) was directly synthesized, with tetramethyl ammonium hydroxide ( TMAH) as catalyst and octamethylcyclotetrasiloxane ( D4) as monomer, under the conditions of high temperature, adding water and oxygen-off. 以八甲基环四硅氧烷为单体,四甲基氢氧化铵为催化剂,水作封端剂,在较高温度、排氧加压密闭的条件下,一步合成羟基聚硅氧烷。
Ring-opening reaction was conducted with 92.00 g octamethylcyclotetrasiloxane ( D_4) and KOH under N_2 protection at 120 ℃ for 1 h. 92.00g八甲基环四硅氧烷(D4)在碱性条件下,120℃,N2保护,开环反应1h;
Effect of temperature on cationic emulsion polymerization of octamethylcyclotetrasiloxane 温度对八甲基环四硅氧烷阳离子乳液聚合的影响
Study on cationic emulsion polymerization of octamethylcyclotetrasiloxane in the presence of non-ionic emulsifier 在非离子乳化剂存在下八甲基环四硅氧烷阳离子乳液聚合的研究
Study on amino modified anionic emulsion copolymerization of octamethylcyclotetrasiloxane 氨基改性有机硅阴离子乳液共聚研究丙烯酰胺共聚反相胶乳
The emulsion polymerization of octamethylcyclotetrasiloxane ( D4) was studied when under basic conditions and using cationic emulsifiers ( 1231, 1227) and nonionic emulsifiers ( OP-10, TX-10 etc.) as complex emulsify systems. 论文首先研究了八甲基环四硅氧烷在碱性条件下,以1227、1231阳离子乳化剂和OP-10、TX-10等非离子乳化剂混配作乳化体系的乳液聚合。
In the second part, the five silanes polyreaction with industrial raw material D4 ( octamethylcyclotetrasiloxane) and get five unvulcanized rubber respectively. The factors that influencing productivity were discussed. 在第二部分中,用这五种硅烷和D4进行聚合反应,生成五种不同的生胶,并对影响这些生胶质量的因素进行讨论。
The silicone emulsion was prepared by microemulsion polymerization with D_4 under the catalysis of octamethylcyclotetrasiloxane. 以八甲基环四硅氧烷(D4)为原料,在十二烷基苯磺酸(DBSA)催化下进行微乳液聚合反应,制得有机硅乳液。
The influence of factor octamethylcyclotetrasiloxane ( D_4) on the monomer convert ratio, emulsion stability and the polymer molecular weight in the alkalescence condition, such as temperature, pH, reaction time and dosage of emulsifying agent and silane coupling agent were studied. 考察了八甲基环四硅氧烷(D4)在碱性条件下的温度、pH值、反应时间以及乳化剂复配和用量、偶联剂用量等影响单体转化率、乳液稳定性及聚合物分子量的因素。
Study on Anion Emulsion Polymerization of Octamethylcyclotetrasiloxane 八甲基环四硅氧烷阴离子乳液聚合反应的研究
The stable modified butyl-acrylate styrene emulsion was prepared with octamethylcyclotetrasiloxane ( D_4). 用八甲基环四硅氧烷(D4)改性丙烯酸丁酯(BA)-苯乙烯(St)乳液,得到了稳定的改性苯丙乳液。
It was found that the polymerization rate of octamethylcyclotetrasiloxane and the amount of the oil separation decrease simultaneously. 发现乳液漂油与环硅氧烷的聚合速度有密切关系。
Study on the Retention and Drainage Effect of Organosilicon-modified Phenol-formaldehyde Resin The organosilicon-modified phenol-formaldehyde resin ( PFR) was prepared by graft copolymerization of octamethylcyclotetrasiloxane ( D_4) and phenol-formaldehyde resin under suitable conditions. 用八甲基四硅氧烷(D4)对酚醛树脂进行接枝共聚反应,得到有机硅改性酚醛树脂,并对其性能指标和留着效果的影响因素进行了初步的研究;
Octamethylcyclotetrasiloxane ( D4) was first selected as a modified organosilicon monomer which was used to synthesis of OH~& terminated polysiloxane. 八甲基环四硅氧烷(D4)是有机硅工业中的一类重要原材料,通过预乳化和开环反应,合成了D4聚硅氧烷;
Studies on emulsion polymerization of polysiloxanes& ⅱ. mechanism of cationic emulsion polymerization of octamethylcyclotetrasiloxane 硅氧烷乳液聚合的研究&Ⅱ.八甲基环四硅氧烷阳离子乳液聚合机理
Bulk Anion-copolymerization Kinetics of Octamethylcyclotetrasiloxane and Amino-silicone Monomer 八甲基环四硅氧烷/氨基取代有机硅单体的本体阴离子共聚动力学
The copolymerization emulsion of octamethylcyclotetrasiloxane ( D 4) with acrylate is studied. At 83 ℃ for about three hours the conversion of D 4 could reach 80%. 研究了八甲基环四硅氧烷(D4)与丙烯酸酯等的乳液共聚反应,当温度为83℃,时间3h,转化率为80%以上。
Copolymerization Kinetics of Octamethylcyclotetrasiloxane and Amio-silicone Monomer ⅰ Polymerization Mechanism and Kinetic Model 八甲基环四硅氧烷与氨取代基有机硅单体的共聚动力学I聚合机理与动力学模型
The surface of PANI was modified by using octamethylcyclotetrasiloxane ( D4) and vinyl trimethoxysilane ( VTMS). 采用八甲基环四硅氧烷(D4)与乙烯基三甲氧基硅烷(VTMS)对PANI进行表面修饰。