CAJ | 학술논문

含硅芳炔树脂具有优异的耐高温性能,在高温下可形成C/SiC有机无机杂化材料,用聚硅烷时含硅芳炔树脂进行改性以提高其含硅量.采用示差扫描量热(DSC)、红外光谱(FT-IR)分析了改性含硅芳炔树脂的固化行为,采用TGA考察了改性含硅芳炔树脂固化产物及其烧结物的热稳定性能,并用XRD对烧结物进行了分析.研究表明,改性后的含硅芳炔树脂黏度降低、硅含量提高;固化物和烧结物在1200℃下空气中的残留率均提高了40%以上;固化物经1450℃烧结后形成了β-Sic,含聚硅烷30%的改性树脂烧结物中SiC含量达到41%.
함규방결수지구유우이적내고온성능,재고온하가형성C/SiC유궤무궤잡화재료,용취규완시함규방결수지진행개성이제고기함규량.채용시차소묘량열(DSC)、홍외광보(FT-IR)분석료개성함규방결수지적고화행위,채용TGA고찰료개성함규방결수지고화산물급기소결물적열은정성능,병용XRD대소결물진행료분석.연구표명,개성후적함규방결수지점도강저、규함량제고;고화물화소결물재1200℃하공기중적잔류솔균제고료40%이상;고화물경1450℃소결후형성료β-Sic,함취규완30%적개성수지소결물중SiC함량체도41%.
Silicon-containing arylacetylene resin(PSA)own excellent high temperature resistance and can be formed C/SiC organic-inorganic hybrid materials under high temperature.PSA was blended with polysilane(PSAS)to in crease its silicon content.The cure behavior of the blends were investigated by using DSC and FT-IR.the thermal stability of cured and sintered PSAS were studied by TGA and DTA,and the structure of sintered PSAS was analysised by XRD. These results showed that the blends get a lower viscosity;the residues of cured PSAS was increased than cured PSA by 40% under air at 1200℃,and sintered materials of cured PSAS was composed of carbon with SiC,which content reached to 41.2% for PSAS-3.