CAJ | 학술논문

以聚碳酸酯二醇（ PC?2000）、二苯甲烷二异氰酸酯（ MDI）为原料合成聚氨酯（ PU）预聚体，再以PU预聚体、扩链剂、甲基丙烯酸丁酯（ BMA）及引发剂在一定条件下反应制备了聚氨酯／聚甲基丙烯酸正丁酯（ PU／PBMA）互穿网络聚合物（ IPN）材料，并加入受阻酚AO?80进行功能化改性，分别采用热固化法和室温固化法制备了受阻酚AO?80改性的PU／PBMA IPN材料。讨论了固化方法、PU与PBMA的配比、受阻酚AO?80用量等对IPN材料阻尼性能的影响，通过动态机械热分析、热失重分析以及扫描电子显微镜对IP N材料的阻尼性能、热稳定性和微观形态结构进行表征。结果表明，热固法比室温固化法更有利于制备高性能阻尼材料；受阻酚AO?80的加入可以明显提高IPN材料的阻尼性能，并能够有效地拓宽阻尼温域；当PU与PBMA质量比为60／40、AO?80质量分数为28％时，所制备的IP N材料的阻尼性能最佳。
이취탄산지이순（ PC?2000）、이분갑완이이청산지（ MDI）위원료합성취안지（ PU）예취체，재이PU예취체、확련제、갑기병희산정지（ BMA）급인발제재일정조건하반응제비료취안지／취갑기병희산정정지（ PU／PBMA）호천망락취합물（ IPN）재료，병가입수조분AO?80진행공능화개성，분별채용열고화법화실온고화법제비료수조분AO?80개성적PU／PBMA IPN재료。토론료고화방법、PU여PBMA적배비、수조분AO?80용량등대IPN재료조니성능적영향，통과동태궤계열분석、열실중분석이급소묘전자현미경대IP N재료적조니성능、열은정성화미관형태결구진행표정。결과표명，열고법비실온고화법경유리우제비고성능조니재료；수조분AO?80적가입가이명현제고IPN재료적조니성능，병능구유효지탁관조니온역；당PU여PBMA질량비위60／40、AO?80질량분수위28％시，소제비적IP N재료적조니성능최가。
Polyurethane was prepared by PC?2000 and MDI, and the hindered phenol AO?80 modified polyure?thane/poly(butyl methacrylate) interpenetrating polymer networks(PU/PBMA IPN) was prepared by polyurethane prepolymers, chain extender, butyl methacrylate and initiator through heat curing method and room temperature curing method.The effect of curing method, ratio of PU and PBMA, dosage of hindered phenol AO?80 was discussed. Through the dynamic mechanics analysis,thermo?gravimetric analyzer and scanning electron microscope, the effect of reaction variable on damping performance, thermal stability and microstructure morphology of this material was char?acterized. The results of the study showed that AO?80 could improve the damping performance of the IPN, thus effec?tively broaden the damping temperature range. When the mass ratio of polyurethane/polybutyl methacrylate was 60/40, the weight ratio of AO?80 was 28%, the damping properties of the IPN material was the best.