【摘要】 基于共轭三组分互穿聚合物网络 (CTC_IPN)和界面共轭互穿这两个新概念 ,通过互穿聚合物网络技术成功地制备了聚氧化丙烯二元醇聚氨酯 /聚 (甲基丙烯酸甲酯 共 三烯丙基异氰脲酸酯 ) /废胶粉CTC_IPN(PU/P(MMA_co_TAIC) /SRP_CTC_IPN ) ,研究了这种材料以及PU/SRP共混物的力学性能 .结果表明 ,PU /P(MMA_co_TAIC) /SRP_CTC_IPN由于含公共网络P(MMA_co_TAIC) ,其性能明显优于PU/SRP共混物 .用扫描电子显微镜 (SEM )和透射电子显微镜(TEM )研究了PU/P(MMA_co_TAIC) /SRP_CTC_IPN和PU/SRP共混物的断面形貌 ,结果表明 ,两者具有完全不同的断裂机理 .TEM结果表明 ,P(MMA_co_TAIC)网络能分别与PU及SRP网络互穿 ,从而改善了两者之间的界面结合更多还原

【Abstract】 Based on the two new concepts of conjugated three_component interpenetrating polymer networks(CTC_IPN) and conjugated interpenetration of networks across interfaces, poly(oxypropylene) polyol_based polyurethane/poly(methyl methacrylate_co_trially isocyanurate)/scrap rubber powder CTC_IPN(PU/P(MMA_co_TAIC/SRP_CTC_IPN)) was prepared successfully by IPN techniques. Mechanical properties of this material and PU/SRP were investigated. The results show that the mechanical properties of PU/P(MMA_co_TAIC)/SRP_CTC_IPN which contain a shared network, i.e. P(MMA_co_TAIC), are superior to those of PU/SRP. Morphologies of PU/P(MMA_co_TAIC)/SRP_CTC_IPN and PU/SRP were examined by scanning electronic microscope(SEM) and transmission electronic microscope(TEM). Fracture morphologies explored by SEM indicate that the two materials have totally different fracture mechanisms. Results of TEM show that P(MMA_co_TAIC) network can weave PU and SRP networks respectively and promote interfacial combination.更多还原