《水溶性环氧树脂为凝胶体系的SiC凝胶浇注成型》.pdf

27 2 硅 酸 盐 通 报 Vo l. 27 N o. 2 2008 4 BULLET IN O F THE CH INESE CERAM IC SOC IETY A pr il, 200 8 SiC 董满江, 毛小建, 张兆泉, 刘 茜 (, 200050 : S iC , S iC : , 54% ( , SiC, 1. 25P a s( 100s1 ; , S iC ; S iC : ; ; ; : TQ174. 6 : A : 2008 Gelcasting of SiC with Epoxy Resin as Gel Form er DON G M anJ iang, MA O X iaoJ ian, ZHAN G ZhaoQuan, LIU Q ian (T h e S tate K ey Laboratory of H igh P erform an ce C eram ics and Sup erfin eM icros tructures, Sh anghai Inst itute of C eram ics, Ch inese A cadem y of S cien ce, Shangha i 200050, C hina Abstract: Epoxy resin as gel form er w as u sed in gelcasting of S iC. The rheo log ica l properties and gelation behav io r of slurry w ith epoxy resin w ere investigated. Com pared w ith acrylam ide gel form er system ( AM , epoxy resin g ives h igher slurry v iscosity but w as lmi ited to about 54% w ith acceptable 1 v iscosity, 1. 25P a s at 100s . W hen the slurry so lid ified, epoxy resin g ives stranger green bod ies than AM, w hich can be u sed to prepare parts w ith larger size or fine structures. A rubber m ou ld w as u sed for cast ing the slurry w ith epoxy resin, w hich cause an inh ib ition on the AM polym erization process and result in d istortion part structure. K ey words: ge lcasting; S iC; w ater so lub le epoxy resin; gel form er system 1 引 言 S iC , [ 13] , ,