以三溴苯基环氧丙基醚、四氯化硅和2-氯丙醇为主要原料,合成了一种含硅、氯、溴三元素协同的高效阻燃剂硅酸三(氯丙基)三溴苯氧基氯丙基酯。探讨了反应温度、时间及物质的量比等对收率的影响,最适宜的工艺条件是:三溴苯基环氧丙基醚与...以三溴苯基环氧丙基醚、四氯化硅和2-氯丙醇为主要原料,合成了一种含硅、氯、溴三元素协同的高效阻燃剂硅酸三(氯丙基)三溴苯氧基氯丙基酯。探讨了反应温度、时间及物质的量比等对收率的影响,最适宜的工艺条件是:三溴苯基环氧丙基醚与四氯化硅及2-氯丙醇的物质的量比为1∶1∶3.4,在80℃反应4h,收率为97.6%。采用FT-IR、1 H NMR表征了产物的分子结构,并用极限氧指数方法测试了产物的阻燃性能等。展开更多
In order to reduce the amount of volumetric shrinkage that occurs in dental composites as a result of curing,a new kind of dental matrix resin combining bisphenol-S-bis（3-meth acry late-2-hydroxy propyl）ether（BisS-...In order to reduce the amount of volumetric shrinkage that occurs in dental composites as a result of curing,a new kind of dental matrix resin combining bisphenol-S-bis（3-meth acry late-2-hydroxy propyl）ether（BisS-GMA） with the expanding monomer unsaturated spiro orthoesters 2-methylene-1,4,6-trispiro[4,4] nonane （SOE） was prepared,with triethylene glycol dimethacrylate （TEGDMA） as diluent.CQ （camphorquinone） of 1wt% and DMAEMA （2-（dimethylamino） ethyl meth acrylate） of 2wt% were used as photoinitiation system to initiate the copolymerization of the matrix resins.The performance including volumetric shrinkage,degree of conversion and condition of the ring-opening reaction of SOE,as well as curing time and the tensile bond strength were investigated respectively by the dilatometer,Fourier transfer infrared,the universal testing machine,and so on.The ring-opening polymerization of SOE occurred.Meanwhile,the obtain copolymers were crosslinked.The matrix resin containing BisS-GMA and SOE showed a reduced amount of volumetric shrinkage at 1.52%,which is a promising strategy for obtaining a polymer with a low amount of volumetric shrinkage.Furthermore,the other properties were not compromised.展开更多
文摘以三溴苯基环氧丙基醚、四氯化硅和2-氯丙醇为主要原料,合成了一种含硅、氯、溴三元素协同的高效阻燃剂硅酸三(氯丙基)三溴苯氧基氯丙基酯。探讨了反应温度、时间及物质的量比等对收率的影响,最适宜的工艺条件是:三溴苯基环氧丙基醚与四氯化硅及2-氯丙醇的物质的量比为1∶1∶3.4,在80℃反应4h,收率为97.6%。采用FT-IR、1 H NMR表征了产物的分子结构,并用极限氧指数方法测试了产物的阻燃性能等。
基金Funded by the National Natural Science Foundation of China(No.50673065)
文摘In order to reduce the amount of volumetric shrinkage that occurs in dental composites as a result of curing,a new kind of dental matrix resin combining bisphenol-S-bis（3-meth acry late-2-hydroxy propyl）ether（BisS-GMA） with the expanding monomer unsaturated spiro orthoesters 2-methylene-1,4,6-trispiro[4,4] nonane （SOE） was prepared,with triethylene glycol dimethacrylate （TEGDMA） as diluent.CQ （camphorquinone） of 1wt% and DMAEMA （2-（dimethylamino） ethyl meth acrylate） of 2wt% were used as photoinitiation system to initiate the copolymerization of the matrix resins.The performance including volumetric shrinkage,degree of conversion and condition of the ring-opening reaction of SOE,as well as curing time and the tensile bond strength were investigated respectively by the dilatometer,Fourier transfer infrared,the universal testing machine,and so on.The ring-opening polymerization of SOE occurred.Meanwhile,the obtain copolymers were crosslinked.The matrix resin containing BisS-GMA and SOE showed a reduced amount of volumetric shrinkage at 1.52%,which is a promising strategy for obtaining a polymer with a low amount of volumetric shrinkage.Furthermore,the other properties were not compromised.
