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可光固化超支化聚硅氧基硅烷的合成与表征 被引量:5
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作者 王生杰 范晓东 +2 位作者 孔杰 王欣 张国彬 《高分子学报》 SCIE CAS CSCD 北大核心 2006年第8期1024-1028,共5页
A new monomer,vinyltriallylsilane(CB3),having functionnal groups with different hydrosilylation reactivity was designed and synthesized by allylation reaction from vinyltrichlorosilane.Then,photocrosslinkable hyperb... A new monomer,vinyltriallylsilane(CB3),having functionnal groups with different hydrosilylation reactivity was designed and synthesized by allylation reaction from vinyltrichlorosilane.Then,photocrosslinkable hyperbranched(poly(siloxysilane)) with terminal allyl groups was prepared via hydrosilylation reaction of vinyltriallylsilane(CB3) and dimethylbis(dimethylsiloxy)silane(A2) monomers at the presence of Karstedt catalyst,and characterized by means of FTIR,()1H-NMR,()29Si-NMR,and SEC/RI/MALLS technology.The polymerization process of A2 and CB3 monomers was studied in situ by using FTIR.It was found that silicon hydride would preferentially react with vinyl groups during the reaction. This can cause to the generation of an intermediate with one Si—H and three allyl groups.By using it to conduct further self-polymerization,hyperbranched polymer can be obtained.The degree of branching of the resulting hyperbranched poly(siloxysilane) was calculated to be 0.44 by quantitative()29Si-NMR spectroscopy,and the weight average molecular weight was 12.1 kg/mol with its polydispersity of 2.52.Finally,the UV curing behavior of the resulting polymer initiated with different photoinitors was also investigated. 展开更多
关键词 超支化 硅氧基硅烷 A2 CB3型单体 氢加成 紫外光固化
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超支化聚硅氧基硅烷的合成及其表征 被引量:6
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作者 王欣 范晓东 +3 位作者 王生杰 孔杰 刘郁杨 龚彦 《高分子学报》 SCIE CAS CSCD 北大核心 2006年第9期1112-1116,共5页
Three hyperbranched poly(siloxysilanes) were prepared from AB3-type monomers at the presence of Karstedt catalyst.The detailed synthesis procedures of AB3-type monomers by reaction between γ-methacryloyloxy propylt... Three hyperbranched poly(siloxysilanes) were prepared from AB3-type monomers at the presence of Karstedt catalyst.The detailed synthesis procedures of AB3-type monomers by reaction between γ-methacryloyloxy propyltrimethoxysilane or vinyltrimethoxysilane with chlorosilane using anhydrous ferric chloride as the catalyst were described.This new approach can simplify the synthetic routes for hyperbranched polysiloxanes.FTIR,()1H-NMR,(()13C-NMR,)()29Si-NMR,elemental analysis and SEC/MALLS were employed to identify the structure of the polymers. The analyses revealed that the reaction between alkoxysilane and chlorosilane could be feasibly catalyzed by anhydrous ferric chloride.The reaction of vinyltrimethoxysilane with chlorosilane could be carried out more easily than that of γ-methylacrylacyloxypropyltrimethoxylsilane with chlorosilane due to its steric hindrance effect. 展开更多
关键词 超支化聚合物 硅氧基硅烷 金属卤化物催化
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阳离子型聚甲基丙烯酰氧丙基三(三甲基硅氧基)硅烷乳液的制备及应用研究 被引量:2
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作者 杨番 王柱 +1 位作者 刘海峰 张涛 《有机硅材料》 CAS 2015年第5期366-372,共7页
以γ-甲基丙烯酰氧丙基三(三甲基硅氧基)硅烷(TRIS)为原料、十八烷基聚醚丙烯酸酯三甲基氯化铵和烷基酚聚氧乙烯基醚为复合乳化体系、2,2'-偶氮二异丁基脒二盐酸盐为引发剂,采用预乳化乳液聚合反应,制备了阳离子型聚甲基丙烯酰氧丙... 以γ-甲基丙烯酰氧丙基三(三甲基硅氧基)硅烷(TRIS)为原料、十八烷基聚醚丙烯酸酯三甲基氯化铵和烷基酚聚氧乙烯基醚为复合乳化体系、2,2'-偶氮二异丁基脒二盐酸盐为引发剂,采用预乳化乳液聚合反应,制备了阳离子型聚甲基丙烯酰氧丙基三(三甲基硅氧基)硅烷(PTRIS)乳液。探讨了预乳化方法对单体预乳化液粒径和稳定性的影响;采用正交实验考察了引发剂用量、乳化剂用量、反应温度、反应时间对乳液性能的影响;采用红外光谱对聚合物结构进行表征,并研究其表面性能。结果表明,采用机械搅拌辅助超声均质的方法能获得粒径为229.4 nm、放置30天不分层的单体预乳化液;其乳液聚合反应的最佳条件为:引发剂用量为单体质量的0.75%、乳化剂用量为单体质量的3%、反应温度为75℃、反应时间为4 h,在此条件下制得的PTRIS乳液外观均匀、单体转化率达到94.8%、无凝胶生成、平均粒径357.5 nm、多分散系数0.145、Zeta电位20.2 m V、稳定性良好;经阳离子型PTRIS乳液整理的棉布对水的接触角达135°,对二碘甲烷的接触角达117°,表面能为3.82 m N/m,具有优异的疏水疏油性能。 展开更多
关键词 γ-甲基丙烯酰氧丙基三(三甲基氧基) 阳离子 乳液 十八基聚醚丙烯酸酯三甲基氯化铵 基酚聚氧乙烯基醚 棉布 疏水 疏油
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二苯基硅基改性的加成型聚二甲基硅氧烷离型涂层的合成及性能
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作者 王峰 黄月文 +2 位作者 姚鸣峰 王斌 张耀东 《广州化学》 CAS 2024年第3期7-11,I0001,F0003,共7页
以甲醇钾为催化剂,四(二甲基乙烯基硅氧基)硅烷(TVDMS)为封端剂,三(三甲基硅基)磷酸酯为中止剂,使用二甲基硅氧烷混合环体(DMC)、四乙烯基四甲基环四硅氧烷(V4)、八苯基环四硅氧烷(P8)为原料,通过高温阴离子开环聚合反应环境友好地成功... 以甲醇钾为催化剂,四(二甲基乙烯基硅氧基)硅烷(TVDMS)为封端剂,三(三甲基硅基)磷酸酯为中止剂,使用二甲基硅氧烷混合环体(DMC)、四乙烯基四甲基环四硅氧烷(V4)、八苯基环四硅氧烷(P8)为原料,通过高温阴离子开环聚合反应环境友好地成功合成了二苯基硅基改性的含乙烯基的聚二甲基硅氧烷,并利用FT-IR、HNMR和GPC对其结构和分子量数据进行了表征,将其制备成离型涂层后,通过180°剥离力测试、疏水角测量、折光率测量等对其性能进行了表征。结果表明,固化样品硬度高,透明性好,折光率随苯基含量的提高而提高,涂层具有100~110°的水接触角,随着苯基含量的提高,剥离力和残余接着率都有所下降。 展开更多
关键词 阴离子开环聚合 高温 四(二甲基乙烯基氧基) 氢加成 二苯基聚 离型涂层
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三(三甲基硅氧基)甲基丙烯酰氧丙基硅烷的合成研究 被引量:5
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作者 张淑娴 杜小兰 +2 位作者 廖俊 陈圣云 张治民 《武汉大学学报(理学版)》 CAS CSCD 北大核心 2003年第6期717-719,共3页
用3种方法合成了三(三甲基硅氧基)甲基丙烯酰氧丙基硅烷,通过核磁共振氢谱和红外吸收光谱确证其结构.其中一步法产率可达60%以上,纯度可达98%以上.与文献报道方法相比,产率提高了10%,成本降低了30%.
关键词 三(三甲基氧基)甲基丙烯酰氧丙基 偶联剂 隐形眼镜 合成
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γ-缩水甘油醚氧丙基三甲氧基硅烷的合成 被引量:2
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作者 王光昆 金炼铁 池圣贤 《山东化工》 CAS 2014年第3期6-7,共2页
对γ-缩水甘油醚氧丙基三甲氧基硅烷的合成工艺进行了研究。以无水甲醇作溶剂,在组合催化剂存在下,烯丙基缩水甘油醚和三甲氧基硅烷发生硅氢加成反应制得γ-缩水甘油醚氧丙基三甲氧基硅烷。讨论了影响反应的主要因素,得出了最佳合成工... 对γ-缩水甘油醚氧丙基三甲氧基硅烷的合成工艺进行了研究。以无水甲醇作溶剂,在组合催化剂存在下,烯丙基缩水甘油醚和三甲氧基硅烷发生硅氢加成反应制得γ-缩水甘油醚氧丙基三甲氧基硅烷。讨论了影响反应的主要因素,得出了最佳合成工艺条件:组合催化剂用量为200μL/mol三甲氧基硅烷、n(烯丙基缩水甘油醚):n(三甲氧基氢硅)=1.2:1、反应温度80℃、反应时间3h。在此条件下,γ-缩水甘油醚氧丙基三甲氧基硅烷的收率可达92.6%。 展开更多
关键词 烯丙基缩水甘油醚 三甲氧基 γ-缩水甘油醚氧丙基三甲氧基 氢加成反应
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钇掺杂对镁合金表面硅烷膜性能的影响 被引量:5
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作者 邹忠利 王田宇 +2 位作者 薛同 王北平 杨少林 《电镀与涂饰》 CAS CSCD 北大核心 2020年第5期269-272,共4页
以含有不同质量浓度Y(NO3)3·6H2O的双[γ-(三乙氧基硅)丙基]四硫化物硅烷(BTESPT)半水解液为处理液,采用浸渍提拉法在AZ31B镁合金表面制备了钇掺杂的硅烷膜。采用电化学工作站、扫描电镜、X射线衍射仪和红外光谱仪研究了钇掺杂对... 以含有不同质量浓度Y(NO3)3·6H2O的双[γ-(三乙氧基硅)丙基]四硫化物硅烷(BTESPT)半水解液为处理液,采用浸渍提拉法在AZ31B镁合金表面制备了钇掺杂的硅烷膜。采用电化学工作站、扫描电镜、X射线衍射仪和红外光谱仪研究了钇掺杂对硅烷膜耐蚀性、表面形貌和组织结构的影响。结果显示,钇掺杂能够减少硅烷膜的微孔,提高硅烷膜的耐蚀性。硅烷溶液中Y(NO3)3·6H2O的质量浓度为12 g/L时,所得钇掺杂硅烷膜的耐蚀性最佳。 展开更多
关键词 镁合金 双[γ-(三乙氧基)丙基]四硫化物 浸渍提拉 掺杂 耐蚀性 组织结构
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高性能含硅、氟甲基丙烯酸酯共聚物的研究 被引量:15
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作者 黄月文 刘伟区 +1 位作者 寇勇 罗广建 《高分子材料科学与工程》 EI CAS CSCD 北大核心 2006年第1期32-35,共4页
制备了γ-甲基丙烯酰氧基丙基三(三甲基硅基)硅烷W D、γ-甲基丙烯酰氧基丙基三乙氧基硅烷及其与甲基丙烯酸异冰片酯、甲基丙烯酸异丁酯和含氟甲基丙烯酸酯的共聚物,通过IR、水接触角、吸水率、铅笔硬度和DSC等手段研究了共聚工艺、含... 制备了γ-甲基丙烯酰氧基丙基三(三甲基硅基)硅烷W D、γ-甲基丙烯酰氧基丙基三乙氧基硅烷及其与甲基丙烯酸异冰片酯、甲基丙烯酸异丁酯和含氟甲基丙烯酸酯的共聚物,通过IR、水接触角、吸水率、铅笔硬度和DSC等手段研究了共聚工艺、含氟单体、硅烷单体及催化交联剂对共聚物膜表面性能和力学性能的影响。延迟滴加有机硅单体尤其是W D和含氟单体可使低用量硅氟单体下的共聚物膜表面憎水性大大增强;催化交联剂可使共聚物的玻璃化温度从31.21℃提高到53.12℃,膜的铅笔硬度达到4H以上。 展开更多
关键词 γ-甲基丙烯酰氧基丙基三(三甲基基) γ-甲基丙烯酰氧基丙基三乙氧基 含氟甲基丙烯酸酯 表面性能
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高硅含量有机硅改性聚丙烯酸酯乳液的制备及应用 被引量:2
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作者 陈艳艳 周磊 +1 位作者 付强 官凤钢 《合成树脂及塑料》 CAS 北大核心 2020年第6期22-26,共5页
以氯硅烷与烷氧基硅烷为原料,制备了含有支链结构的新型有机化合物——γ-甲基丙烯酰氧基丙基三(三甲基硅氧基)硅烷(MATS),将MATS、硅烷偶联剂A-174、丙烯酸酯类单体反应制备了硅改性聚丙烯酸酯乳液,并在玻璃纤维网布上进行了性能实验... 以氯硅烷与烷氧基硅烷为原料,制备了含有支链结构的新型有机化合物——γ-甲基丙烯酰氧基丙基三(三甲基硅氧基)硅烷(MATS),将MATS、硅烷偶联剂A-174、丙烯酸酯类单体反应制备了硅改性聚丙烯酸酯乳液,并在玻璃纤维网布上进行了性能实验。结果表明:该薄膜的柔性较好、不粘连、强度高、耐碱保留率达80%以上;有机硅化合物与丙烯酸酯类单体发生了共聚;制备的硅改性聚丙烯酸酯具有典型的核壳结构。 展开更多
关键词 聚丙烯酸酯 γ-甲基丙烯酰氧基丙基三(三甲基氧基) 核壳聚合
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耐热持久疏水涂层的制备及其性能研究 被引量:6
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作者 江晓婷 王朝生 江振林 《涂料工业》 CAS CSCD 北大核心 2016年第7期1-6,共6页
以具有较低表面张力的β-七甲基三硅氧烷基-乙基三甲氧基硅烷(β-HTEOs)为改性组分,通过浸渍提拉法制备聚硅氧烷疏水涂层。采用气相色谱-质谱连用、傅里叶红外光谱仪、热重分析仪、接触角测试等手段对β-HTEOs结构和涂层性能进行表征。... 以具有较低表面张力的β-七甲基三硅氧烷基-乙基三甲氧基硅烷(β-HTEOs)为改性组分,通过浸渍提拉法制备聚硅氧烷疏水涂层。采用气相色谱-质谱连用、傅里叶红外光谱仪、热重分析仪、接触角测试等手段对β-HTEOs结构和涂层性能进行表征。结果表明:以β-HTEOs作为改性组分制备的涂层具有优异的疏水性能和一定耐热性。同时,高温有利于涂层中未交联的Si—OH继续交联,使涂层与水的静态接触角均升高,涂层表现出较好的不粘持续性。 展开更多
关键词 β-七甲基三基-乙基三甲氧基 疏水性能
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Preparation and properties of organic-inorganic modified SiO_2 thin films 被引量:1
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作者 赵贤辉 李长虹 王海 《Journal of Central South University》 SCIE EI CAS 2013年第3期608-614,共7页
Polydimethylsiloxane (PDMS), tetraethoxysilane (TEOS), ethyl alcohol (EtOH) and deionized water were main raw materials to prepare silicone-modified hybrid thin films using sol-gel method. The effect of the cont... Polydimethylsiloxane (PDMS), tetraethoxysilane (TEOS), ethyl alcohol (EtOH) and deionized water were main raw materials to prepare silicone-modified hybrid thin films using sol-gel method. The effect of the contents of H2O and PDMS on thin films was studied. When the volume ratio of H20 to TEOS is 0.5, the optimum quality of thin films is obtained. And the gelation time is affected slightly by H20 content. Uniform thin films are obtained when the volume ratio of PDMS to TEOS is 0.2. Yet, the sol would be inactive in 6 d. Various properties of thin films were studied, including hardness, adhesive quality, hydrophobic property, corrosion protection property, and abrasion resistance. Test results show that the pencil hardness is generally 3-6 H, and adhesive quality achieves the highest standard of 0. When the sintering temperature is below 400℃, the contact angle is about 95° and hydrophobic films are obtained. The abrasion resistance of thin films is better than that of aluminum alloy when the sintering temperature is higher than 300℃. And the excellent corrosion protective effect is obtained by single-layer coating when the sintering temperature is higher than 400℃. 展开更多
关键词 sol-gel method hybrid thin film HARDNESS adhesive quality hydrophobic property CORROSION
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Modification of methyl oleate for silicon-based biological lubricating base oil 被引量:1
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作者 Shixing Cui Zhi Yun Xia Gui 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2017年第1期130-136,共7页
A new kind of silicon-based biological lubricating base oil with good viscosity-temperature behavior,viscosity index,thermostability,oxidation stability and wear resistance performance was synthesized as a derivative ... A new kind of silicon-based biological lubricating base oil with good viscosity-temperature behavior,viscosity index,thermostability,oxidation stability and wear resistance performance was synthesized as a derivative of methyl oleate.Trimethylsilylation reaction was introduced to further improve methyl oleate oxidation stability and lubricity after epoxidation and open-ring reactions.The order of effectiveness of acid binding agent was N,N-diisopropylethylamine(DIEA) > pyridine > diethylamine > triethylamine,and the effects of various parameters on the trimethylsilylation reaction as well as on the silicon-oxygen bond stability and reaction yield were studied.A maximum yield of 34.54%was achieved at hydroxyl/trimethyl chlorosilane/DIEA molar ratio of1:1.25:1,reaction temperature 40℃,reaction time 1.5 h. 展开更多
关键词 Methyl oleate Trimethyl chlorosilane Acid binding agent N N-diisopropylethylamine Lubricity Silicon-based biological lubricating base oil
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Sorption of Acid Dyes onto Silica Modified with Cetyltrimethylammonium Cations 被引量:3
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作者 TahirImranQureshi Dong-IkSong +1 位作者 Young-WoongJeon Young-SupLee 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2002年第1期102-108,共7页
The sorption behavior of acid dyes onto cetyltrimethylammonium bromide (CTAB)- modified silica as a function of pH in the aqueous medium was studied. Single- and multi-solute sorption equilibria of orange II(OR), phen... The sorption behavior of acid dyes onto cetyltrimethylammonium bromide (CTAB)- modified silica as a function of pH in the aqueous medium was studied. Single- and multi-solute sorption equilibria of orange II(OR), phenol red (PR) and Eriochrome Black T (EBT) were studied at pH 3, unbuffered water pH and pH 11. Sorption behavior of EBT could not be conducted at pH 3 due to its aggregation in acidic medium. All the reaction conditions, experimental protocols and techniques remained the same throughout the sorption process. Sorption isotherms for single-solute system were fitted by the Langmuir model, while Langmuir competitive model (LCM) and the ideal adsorbed solution theory (IAST) coupled with Langmuir model (IAST/Langmuir) were used for the prediction of multisolute competitive sorption. Sorption affinities influenced by the factors like physical interactive forces between the molecules of CTA on silica and sorbate, structural limitations of the dyes based on their geometrical arrangement were investigated. Sorption affinity of OR was found to be higher than that of EBT and PR at all the pH values investigated. Magnitude of the sorption capacities was observed to be higher in acidic medium but lower in alkaline medium. Trends of the sorption affinities in multisolute system were similar to those in single-solute system but magnitude of the sorption capacities was significantly reduced due to the prevailing competition among the sorbates. 展开更多
关键词 CTAB SILICA SORPTION acid dyes
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Synthesis, characteristics of hierarchical EU-1 zeolite for xylene isomerization probe reaction 被引量:5
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作者 Xiaofeng Li Pengchao Ren +6 位作者 Yanting Zhang Xiaozhen Liu Xiaotao Sun Meng Gao Miaojuan Jia Zhiping Lü Tao Dou 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2016年第11期1577-1583,共7页
Introduced a method of synthesizing hierarchical EU-1 zeolite with organosilanes as additive, and studied the influences of following different kinds of organosilanes on the synthesis of hierarchical EU-1 zeolite: γ-... Introduced a method of synthesizing hierarchical EU-1 zeolite with organosilanes as additive, and studied the influences of following different kinds of organosilanes on the synthesis of hierarchical EU-1 zeolite: γ-glycidoxy propyl trimethoxy silane(GPTMS), N-β-(aminoethyl)-γ-aminopropyl methyl dimethoxyl silane(APAEDMS),and N-(β-aminoethyl)-γ-aminopropyl dimethoxyl(ethyoxyl) silane(TMPED). The hierarchical EU-1 samples were characterized by XRD, SEM, N_2 adsorption, FT-IR and NH_3-TPD to analyze the crystallinity, morphology, surface area, pore size distribution and acidity. The results showed that hierarchical EU-1 zeolites were successfully synthesized; organosilanes have great influence on crystal morphology of EU-1 zeolites; the exterior surface area of hierarchical EU-1 zeolite, which synthesized with organosilanes(APAEDMS) adding into synthesis system, increased by 62.1% and mesopore volume increased by 129.1% compared with conventional EU-1 zeolites, thus can reduce the diffusional restriction markedly in catalytic reaction. The catalytic performance of hierarchical EU-1zeolites were evaluated in m-xylene isomerization on fixed bed reactor. The catalytic data showed that the isomerization activity PX/X of the hierarchical EU-1 zeolites reached around 24.09% in theoretical thermodynamic equilibrium from 23.83%, and the selectivity of C_8 aromatic hydrocarbon increased from 75.16% to 84.87%. The conversion of p-xylene increased from 16.30% to 18.41%. 展开更多
关键词 EU-1 Zeolite Hierarchical pore Synthesis Catalysis
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Nano-indentation profiles of intrinsic hardness and modulus of films based on silsesquioxane modified with titanium tetrabutoxide
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作者 陈平 孙科军 +2 位作者 刘今成 崔津津 胡立江 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2004年第6期644-648,共5页
This study is to analyze the influence of the modifier, 5~25 wt % titanium tetrabutoxide (TBO), on the hardness and elastic modulus of the films based on SSO deriving from hydrolytic condensation of (3-glycidoxypropy... This study is to analyze the influence of the modifier, 5~25 wt % titanium tetrabutoxide (TBO), on the hardness and elastic modulus of the films based on SSO deriving from hydrolytic condensation of (3-glycidoxypropyl)trimethoxysilane (GPMS) and vinyltrimethoxysilane (VMS), by the continuous stiffness measurement (CSM) technique of an instrumented-indentation testing (IIT) device. Films were synthesized by adding the stoichiometric amount of ethylenediamine (EDA) and benzoyl proxide (BPO) to SSO solutions in ethanol, dip-coating over glass substrates, and curing using an appropriate thermal cycle. Intrinsic values of hardness and elastic modulus were determined with the average values in “plateau region” from “four-layer” explanation. And the brittle index of the modified coating systems was analyzed. 展开更多
关键词 silesesquioxanes (3-glycidoxypropyl)trimethoxysilane VINYLTRIMETHOXYSILANE titanium tetrabutoxide HARDNESS elastic modulus brittle index
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Synthesis of Thiol-functionalized Mesoporous Materials for Hg2. Trapping
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作者 Zeid A. Alothman Allen W. Apblett 《Journal of Environmental Science and Engineering》 2010年第1期1-8,共8页
Mesoporous silica materials with uniform channels containing functionalized organic monolayers have been synthesized by grafting a thiol functional group, (3-Mercaptopropyl) trimethoxysilane (MPTMS). A new approac... Mesoporous silica materials with uniform channels containing functionalized organic monolayers have been synthesized by grafting a thiol functional group, (3-Mercaptopropyl) trimethoxysilane (MPTMS). A new approach to heavy metal ion adsorbents based on the covalent grafting of MPTMS groups to the framework pore walls of mesoporous silica molecular sieves has been developed and investigated with regard to hydroxyl group densities, channel dimensions, morphologies and reaction conditions. Results show that the ordered mesostructures of functionalized samples were retained after modification and the thiol functional group was immobilized mainly inside the mesopore channel. The relative surface coverage of the monolayer can be systematically varied up to 95%. The functionalized hybrid materials show exceptional selectivity and capacity for removing mercury from aqueous waste stream with distribution coefficients up to 435,000. The regenerated material show high mercury ion uptake capacity of 2.87 mmol/g (86.5%). 展开更多
关键词 MESOPOROUS thiol-functional groups ADSORPTION Hg2+
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