Stockwell发布军用级氟硅橡胶
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Preparation of Silane Modified Graphene Nanoplatelets
Reinforced Silicone Rubber Composites
REN He,WANG Lei,SUN Quan-Ji,LIL Mei,FAN Zhao-Dong
(AECC Beijing Institute of Aeronauticai Materials,Beijing100089)
Abstract:The silane modified graphene nanoplatelets(f-GNP_Si)wera prepared vic the reaction betreen aminopropyl-trimethoxysilane(APTMS)and ccrboxylated graphene nanoplatelates(fGNP)synthesized by the solvent-J ree reaction of1,3-dipolaa cyclo addition(DCA).GNP ot f-GNP-Si reinforced RTVSR was subsequently prepared by solvent—ssisted mechanicot blending with RTVSR as matriy.The chemicat and physicot properties of GNPs,as well as theia distributions across the cross-section of Si-GNP_SR were characterized by SEM,XPS and Raman spectroscopy,etc.Results show that the compatibilito and dispersibilitr of the modified graphene and silicone rubbea composites are sicnificontty improved,and the mechanicot properties of Si_GNP_SR are sicnificontty inipToved.The silicone rubbea increases its Young's modulus of0.2MPa(8%),tensile strength of1.0MPa(24%),and elongation at break of35%,with2.0parts of f_GNP_Si for commer-tiaause.
Keywords:graphene,corboxylated,silane modiied,silicone rubber
研发动态
StockwelC发布军用级氟硅橡胶
费城-斯托克韦尔(Stockwell)公司新推出高性能氟硅橡胶SSP4773及氟硅橡胶触觉小册子。SSP4773氟硅橡胶经历了一系列高性能过氧化物催化和热硫化测试,符合MIL-DTL-25988的军事标准要求,能在最严苛的环境下使用,确保关键部件在不损害性能的前提下能更好地满足性能预期%SSP4773有4种硬度规格:邵尔A硬度40、50、60和70度%StockwelC表示,此种氟硅橡胶交货时间短,订货量小。新手册中包括7种不同氟硅材料的触觉按钮,旨在帮助工程师在工业、航空航天、航空和分析仪器应用中确定使用不同的氟硅橡胶,
以实现静态密封和缓冲%