CAJ | 학술논문

合成了不同链段长度的卤代硅氧烷，并用其与间二乙炔基苯格氏试剂反应，合成了两种硅烷芳炔-硅氧烷芳炔嵌段共聚物（SiO-b-PSA），并制成碳纤维增强树脂复合材料。利用红外光谱（FT-IR）、核磁共振氢谱（1H NMR）、凝胶渗透色谱（GPC）、旋转流变、差示扫描量热分析(DSC)、热失重分析(TGA)和悬梁臂冲击实验对共聚物及其复合材料的结构和性能进行表征。研究结果表明所合成的共聚物具有优良的耐热性和韧性，硅烷芳炔-硅氧烷芳炔嵌段共聚物在氮气气氛下的Td5高于513℃，1000℃残留率高于78.9%，硅烷芳炔-硅氧烷芳炔嵌段共聚物/碳纤维复合材料的冲击强度高达(30.92±0.44) kJ·m-2。
합성료불동련단장도적서대규양완，병용기여간이을결기분격씨시제반응，합성료량충규완방결-규양완방결감단공취물（SiO-b-PSA），병제성탄섬유증강수지복합재료。이용홍외광보（FT-IR）、핵자공진경보（1H NMR）、응효삼투색보（GPC）、선전류변、차시소묘량열분석(DSC)、열실중분석(TGA)화현량비충격실험대공취물급기복합재료적결구화성능진행표정。연구결과표명소합성적공취물구유우량적내열성화인성，규완방결-규양완방결감단공취물재담기기분하적Td5고우513℃，1000℃잔류솔고우78.9%，규완방결-규양완방결감단공취물/탄섬유복합재료적충격강도고체(30.92±0.44) kJ·m-2。
A series of block copolymers of poly(silane arylacetylene) and poly(siloxane arylacetylene) (SiO-b-PSA) were synthesized by the condensation reactions ofm-diethynylbenzene magnesium reagents with variousα,ω-bis(chloro)dimethylsiloxanes. Carbon fiber reinforced composites were prepared through compression molding. The structures and properties of the resins and composites were characterized by FT-IR, 1H NMR, GPC, DSC, TGA and mechanical tests. The copolymers had good heat resistance and toughness. The copolymers also showed excellent processability that could be cured at below 200℃. The cured resins possessed high thermal and thermooxidative stability. Their thermo-decomposition occurred at above 513℃ in N2. Impact strength of the composites arrived at as high as(30.92±0.44) kg·m-2.