Hexa(2-hydroxyethyl methacrylate)cyclotriphosphazene(HHMP) was synthesized from 2-hydroxyethyl methacrylate and hexachlorocyclotriphosphazene through nucleophilic substitution reaction in the presence of cuprous chlor...Hexa(2-hydroxyethyl methacrylate)cyclotriphosphazene(HHMP) was synthesized from 2-hydroxyethyl methacrylate and hexachlorocyclotriphosphazene through nucleophilic substitution reaction in the presence of cuprous chloride as a catalyst. Raman, FTIR and NMR techniques were used to characterize and confirm the structure of the product compound.展开更多
采用常规可固化堵漏剂解决低压地层裂缝性漏失时会产生密度过大或承压不足的技术难题,因此研究低密度高抗压的堵漏体系具有重要意义。通过合成聚丙烯酰胺(polyacrylamide,HPAM)交联形成有机网络,并优选水泥材料形成无机网络,构建低密度...采用常规可固化堵漏剂解决低压地层裂缝性漏失时会产生密度过大或承压不足的技术难题,因此研究低密度高抗压的堵漏体系具有重要意义。通过合成聚丙烯酰胺(polyacrylamide,HPAM)交联形成有机网络,并优选水泥材料形成无机网络,构建低密度有机-无机互穿网络堵漏体系;采用模拟水驱实验、X射线衍射、扫描电子显微镜(scanning electron microscope,SEM)、高温高压(high temprature and high pressure,HTHP)堵漏模拟实验、抗压实验等分析了堵漏体系的性能和堵漏机理。结果表明,聚丙烯酰胺交联反应形成的有机网络与水泥水化形成的无机网络通过静电力和范德华力等作用可形成互穿网络体系,体系抗压达6.3 MPa,密度为1.28 g/cm^(3),固化时间实现2~5 h可控,固化前后的酸溶率分别为87.8%和63.4%,堵漏及解堵性良好。展开更多
A one dimensional coordination polymer, [(C7H18N)(Ag2I3)]n((C7H18N)+=Methyltriethylammonium) has been successfully synthesized and characterized by X-ray single-crystal diffraction method. Structure analysis shows tha...A one dimensional coordination polymer, [(C7H18N)(Ag2I3)]n((C7H18N)+=Methyltriethylammonium) has been successfully synthesized and characterized by X-ray single-crystal diffraction method. Structure analysis shows that the compound consists of organic cations(Methyltriethylammonium) and inorganic anion chains (Ag2I3)n-. The inorganic moiety consists of AgI4 tetrahedron, which shares the same edges with adjacent AgI4 tetrahedrons to form one-dimensional infinite double chains along a-axis. There exists weak interaction among Ag…Ag atoms in the crystal. Anion chains are surrounded by Methyltriethylammonium cations. Anion chains and cations are in combination with each other by static attracting forces in the crystal to form so-called organic-inorganic hybrid structure. According to the crystal structure data, quantum chemistry calculation with DFT on B3LYP level was used to reveal the electronic structure of title compound. CCDC: 254288.展开更多
文摘Hexa(2-hydroxyethyl methacrylate)cyclotriphosphazene(HHMP) was synthesized from 2-hydroxyethyl methacrylate and hexachlorocyclotriphosphazene through nucleophilic substitution reaction in the presence of cuprous chloride as a catalyst. Raman, FTIR and NMR techniques were used to characterize and confirm the structure of the product compound.
文摘采用常规可固化堵漏剂解决低压地层裂缝性漏失时会产生密度过大或承压不足的技术难题,因此研究低密度高抗压的堵漏体系具有重要意义。通过合成聚丙烯酰胺(polyacrylamide,HPAM)交联形成有机网络,并优选水泥材料形成无机网络,构建低密度有机-无机互穿网络堵漏体系;采用模拟水驱实验、X射线衍射、扫描电子显微镜(scanning electron microscope,SEM)、高温高压(high temprature and high pressure,HTHP)堵漏模拟实验、抗压实验等分析了堵漏体系的性能和堵漏机理。结果表明,聚丙烯酰胺交联反应形成的有机网络与水泥水化形成的无机网络通过静电力和范德华力等作用可形成互穿网络体系,体系抗压达6.3 MPa,密度为1.28 g/cm^(3),固化时间实现2~5 h可控,固化前后的酸溶率分别为87.8%和63.4%,堵漏及解堵性良好。
文摘A one dimensional coordination polymer, [(C7H18N)(Ag2I3)]n((C7H18N)+=Methyltriethylammonium) has been successfully synthesized and characterized by X-ray single-crystal diffraction method. Structure analysis shows that the compound consists of organic cations(Methyltriethylammonium) and inorganic anion chains (Ag2I3)n-. The inorganic moiety consists of AgI4 tetrahedron, which shares the same edges with adjacent AgI4 tetrahedrons to form one-dimensional infinite double chains along a-axis. There exists weak interaction among Ag…Ag atoms in the crystal. Anion chains are surrounded by Methyltriethylammonium cations. Anion chains and cations are in combination with each other by static attracting forces in the crystal to form so-called organic-inorganic hybrid structure. According to the crystal structure data, quantum chemistry calculation with DFT on B3LYP level was used to reveal the electronic structure of title compound. CCDC: 254288.
