NDI/MDI质量比对PUE性能的影响  

The Effect of NDI/MDI Ratio on the Performance of PUE

作　　者：闫志浩 隋温楚 张维鹏 刘锦春[1] YAN Zhihao;SUI Wenchu;ZHANG Weipeng;LIU Jinchun(Key Laboratory of Rubber and Plastic Materials and Engineering,Qingdao University of Science and Technology,Ministry of Education,Qingdao 266042,China)

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,山东青岛266042

出　　处：《聚氨酯工业》2023年第5期25-28,共4页Polyurethane Industry

摘　　要：以聚己二酸乙二醇酯二醇(PEA)、1,5-萘二异氰酸酯(NDI)、二苯基甲烷二异氰酸酯(MDI)及扩链剂1,4-丁二醇为原料,采用预聚体法合成聚氨酯弹性体(PUE),研究了NDI/MDI质量比对PUE常温及高温下力学性能、热性能、动态力学性能等性能的影响。结果表明:随着NDI/MDI质量比的增大,PUE的玻璃化转变温度逐渐降低,耐热性能逐渐增强,损耗因子降低。当NDI/MDI的质量比为1/1时,PUE在常温和高温下的综合力学性能表现最好。The polyurethane elastomers(PUE)was synthesized using prepolymering method with the polyethylene adipate glycol,1,5-naphthalene diisocyanate(NDI),diphenylmethane diisocyanate(MDI),and chain extender 1,4-butanediol as raw materials.The effects of the ratio of NDI/MDI on the mechanical,thermal,and dynamic mechanical properties of PUE at room and high temperatures were studied.The results showed that,with the increase of NDI/MDI mass ratio,the glass transition temperature of PUE decreased,the heat resistance increased and loss factor decreased.When the mass ratio of NDI/MDI was 1/1,the comprehensive mechanical properties of PUE at room temperature and high temperature were the best.

关 键 词：聚氨酯弹性体 混合二异氰酸酯 芳香族聚氨酯 耐温性能 

分 类 号：TQ333.95[化学工程—橡胶工业]