【摘要】 制备了一系列不同配比的邻甲酚醛环氧树脂/聚氨酯互穿聚合物网络(o-CFER/PUIPN)。力学性能测试表明,当m(o-CFER)∶m(PU)=80∶20时,抗冲强度和抗张强度最大,显正协同效应。扫描电镜照片显示此时两相相容性好,互穿程度高,说明力学性能协同效应的大小和网络互穿程度与组分配比有关。动态力学分析表明,PU质量分数在30%以内,玻璃化转变温度(Tg)随着PU含量的增加而提高。热重分析显示,当m(o-CFER)∶m(PU)=90∶10时,初始分解温度比o-CFER提高了20℃。更多还原

【Abstract】 A series of interpenetrating polymer networks of o-cresol-formaldehyde epoxy resin（o-CFER）/（polyurethane）（PU） were prepared. The mechanical properties of the interpenetrating polymer network were （optimized） at m（o-CFER）∶m（PU）=80∶20 and the components were synergistic. The morphology was studied by means of SEM and the results show that at this ratio the two phases had good compatibility, and the degree of interpenetration between the two phases was high, which suggests that the synergistic effect on the （mechanical） performance may be correlated to the ratio and the interpenating degree of o-CFER/PU. The TBA analysis indicates that the glass transition temperature(T_g) increased with the PU content when it was within 30%. The TG result shows that when m（o-CFER）∶m（PU）=90∶10, the stability of the material was the best.更多还原