有机微球/聚氨酯复合材料的合成及阻尼性能研究  

Study on synthesis and damping performance of organic microsphere/polyurethane composites

作　　者：李廷廷 沈照羽 徐祥 吕小健 刘锦春[1] LI Ting-ting;SHEN Zhao-yu;XU Xiang;LV Xiao-jian;LIU Jin-chun(Key Laboratory of Rubber-Plastics,Ministry of Education,School of Polymer Science and Engineering,Qingdao University of Science&Technology y 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：《热固性树脂》2021年第3期1-6,共6页Thermosetting Resin

基　　金：山东省重点研发计划项目(2019GGX1020441);山东省重点大科技创新工程项目(2019JZZY020204)。

摘　　要：采用聚醚多元醇和二苯基甲烷二异氰酸酯(MDI)为基材合成了聚醚型聚氨酯弹性体,通过物理力学性能和动态力学性能测试研究了多元醇、异氰酸根(—NCO)、扩链剂对聚氨酯弹性体性能的影响以及有机微球填料对复合材料性能的影响。结果表明:多元醇选用PTMG—1000与PPG-210,其质量比为60∶40时弹性体具有良好的阻尼性能。随着预聚体中—NCO含量增加,材料的强度以及刚性增大,但柔顺性降低,阻尼性能也逐渐降低,当—NCO质量分数为5%时,材料的阻尼性能最好。扩链剂BDO与TMP并用时,随着TMP用量增加,材料的阻尼性能提高。适量有机微球的加入可明显改善聚氨酯材料的阻尼性能。The polyether polyurethane elastomer was synthesized using polyether polyol and diphenylmethane diisocyanate(MDI)as the base materials.The effects of polyol,isocyanate(—NCO)and chain extenders on the properties of polyurethane elastomers and the effect of organic microsphere fillers on the properties of composite materials were studied by tests of physical and mechanical properties and dynamic mechanical properties.The results showed that when PTMG-1000 and PPG-210 were selected as polyols,and their mass ratio was 60∶40,the elastomer had good damping performance.With the—NCO content in the prepolymer increase,the strength and rigidity of the materials were increased,but the flexibility was decreased and the damping performance was gradually decreased.When the mass fraction of—NCO was 5%,the damping performance of the material was the best.When chain extender BDO and TMP were used together,with the TMP amount increase,the damping performance of the material was improved.The addition of an appropriate amount of organic microspheres could significantly improve the damping performance of polyurethane materials.

关 键 词：有机微球 聚氨酯弹性体 多元醇 异氰酸根 扩链剂 复合材料 阻尼性能 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业] TB332[一般工业技术—材料科学与工程]