2-[3,5,7,9,11,13,15-Heptakis(2-trimethoxysilylethyl)-2,4,6,8,10,12,14,16,17,18,19,20-dodecaoxa-1,3,5,7,9,11,13,15-octasilapentacyclo[9.5.1.13,9.15,15.17,13]icosan-1-yl]ethyl-trimethoxysilane | 463962-11-0

• 分子结构分类: 有机化合物 - 有机金属化合物 - 有机类金属化合物
• 英文名称: 2-[3,5,7,9,11,13,15-Heptakis(2-trimethoxysilylethyl)-2,4,6,8,10,12,14,16,17,18,19,20-dodecaoxa-1,3,5,7,9,11,13,15-octasilapentacyclo[9.5.1.13,9.15,15.17,13]icosan-1-yl]ethyl-trimethoxysilane
• CAS: 463962-11-0
• 化学式: C₄₀H₁₀₄O₃₆Si₁₆
• 分子量: 1610.61
• InChiKey: BUPLZASEGMCSTC-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.79
• 重原子数：
  92
• 可旋转键数：
  48
• 环数：
  6.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  332
• 氢给体数：
  0
• 氢受体数：
  36

反应信息

• 作为产物：
  描述：

  三甲氧基硅烷 、 八乙烯基-POSS 在 dihydrogen hexachloroplatinate 、 甲烷 作用下， 以 乙醚 、 异丙醇 为溶剂， 反应 23.5h， 以97.6%的产率得到2-[3,5,7,9,11,13,15-Heptakis(2-trimethoxysilylethyl)-2,4,6,8,10,12,14,16,17,18,19,20-dodecaoxa-1,3,5,7,9,11,13,15-octasilapentacyclo[9.5.1.13,9.15,15.17,13]icosan-1-yl]ethyl-trimethoxysilane
  参考文献：
  名称：

  Synthesis and characterization of novel room temperature vulcanized (RTV) silicone rubbers using Vinyl-POSS derivatives as cross linking agents

  摘要：

  Two kinds of novel PUSS cross-linkers were firstly prepared via hydrosilylation of Vinyl-PUSS and trimethoxysilane. And two types of novel polydimethylsiloxane (PDMS) polymer composites as RTV silicone rubbers were prepared using Vinyl-PUSS derivatives as cross-linkers in the presence of organotin catalyst. To completely exhibit superiorities of two kinds of novel cross-linkers, RTV silicone rubbers prepared with two proportions of different cross-linkers were assessed. The chemical inclusion of novel PUSS into PDMS networks by hydrolytic condensation reaction was verified by attenuated total reflection (ATR) infrared spectroscopy. Morphologies, thermal properties, mechanical properties and hardness of these novel RTV silicone rubbers were studied. The results exhibited significantly enhanced effects of PUSS on thermal stabilities, mechanical properties and hardness as compared to the PDMS polymers prepared with the traditional tetra-functional TMOS and TEOS cross-linkers. The striking improvements in thermal properties, mechanical properties and hardness could be attributed to the synergistic effect of the increase of dimensionality of cross-linked networks in novel RTV silicone rubbers resulting from special three-dimensional structure of novel FOSS cross-linkers, plasticization of self-cross-linked POSS cross-linkers and uniform distribution of PUSS cross-linkers. (C) 2010 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.polymer.2010.06.028

文献信息

• Synthesis and characterization of novel room temperature vulcanized (RTV) silicone rubbers using Vinyl-POSS derivatives as cross linking agents
  作者：Dongzhi Chen、Shengping Yi、Weibing Wu、Yalan Zhong、Jun Liao、Chi Huang、Wenjuan Shi

  DOI：10.1016/j.polymer.2010.06.028

  日期：2010.8

  Two kinds of novel PUSS cross-linkers were firstly prepared via hydrosilylation of Vinyl-PUSS and trimethoxysilane. And two types of novel polydimethylsiloxane (PDMS) polymer composites as RTV silicone rubbers were prepared using Vinyl-PUSS derivatives as cross-linkers in the presence of organotin catalyst. To completely exhibit superiorities of two kinds of novel cross-linkers, RTV silicone rubbers prepared with two proportions of different cross-linkers were assessed. The chemical inclusion of novel PUSS into PDMS networks by hydrolytic condensation reaction was verified by attenuated total reflection (ATR) infrared spectroscopy. Morphologies, thermal properties, mechanical properties and hardness of these novel RTV silicone rubbers were studied. The results exhibited significantly enhanced effects of PUSS on thermal stabilities, mechanical properties and hardness as compared to the PDMS polymers prepared with the traditional tetra-functional TMOS and TEOS cross-linkers. The striking improvements in thermal properties, mechanical properties and hardness could be attributed to the synergistic effect of the increase of dimensionality of cross-linked networks in novel RTV silicone rubbers resulting from special three-dimensional structure of novel FOSS cross-linkers, plasticization of self-cross-linked POSS cross-linkers and uniform distribution of PUSS cross-linkers. (C) 2010 Elsevier Ltd. All rights reserved.
• Synthesis and characterization of novel room temperature vulcanized (RTV) silicone rubbers using octa[(trimethoxysilyl)ethyl]-POSS as cross-linker
  作者：Dongzhi Chen、Shengping Yi、Pengfei Fang、Yalan Zhong、Chi Huang、Xiaojun Wu

  DOI：10.1016/j.reactfunctpolym.2010.12.010

  日期：2011.4

  A novel cross-linker octa[(trimethoxysilyl)ethyl]-POSS (UPS) based on a Vinyl-PUSS derivative was firstly prepared via hydrosilylation chemistry. The novel PUSS cross-linker was applied to hydroxyl terminated polydimethylsiloxane (HPDMS) matrix to prepare a series of novel RTV silicone rubbers. The chemical incorporation of novel PUSS cross-linker into PDMS by hydrolytic condensation reaction was verified by attenuated total reflection (ATR) infrared spectroscopy. Morphology, thermal properties and mechanical properties of these novel RTV silicone rubbers have been studied by means of scanning electron microscope (SEM), thermal gravimetric analysis, universal tensile testing machine and dynamic mechanical analysis, respectively. The results displayed a pronounced enhancement effect of the novel cross-linker UPS on thermal stabilities and mechanical properties of RTV silicone rubbers as compared with the PDMS polymers prepared with tetramethoxysilane (TMOS), tetraethoxysilane (TEOS) and methyltrimethoxysilane (MTMOS) cross-linkers. Subsequently, the thermal decomposition of representative novel RTV silicone rubber in nitrogen was monitored by TGA coupled with real-time IR, and the degradation residues were also characterized by FTIR. It was found that the PUSS cages were beneficial to increasing the degradation residues. The striking enhancements in thermal properties and improvements on mechanical properties could be attributable to the synergistic effect of the increasing dimensionality of cross-linking networks resulting from three-dimensional structure of UPS cross-linker, the plasticization of self-cross-linked UPS cross-linker and uniform distribution of PUSS-rich domains. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved.