聚氨酯/无机填料复合弹性体的制备及性能研究  

Preparation and performance of polyurethane elastomer/inorganic filler composite

作　　者：邵迪[1] 刁建志[1,2] 王丽洁[1] 李龙[1] Shao Di Diao Jianzhi Wang Lijie Li Long(College of Material Science and Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043 Hebei Provincial Key Laboratory of Traffic Engineering Materials, Shijiazhuang 050043)

机构地区：[1]石家庄铁道大学材料科学与工程学院,石家庄050043 [2]河北省交通工程材料重点实验室,石家庄050043

出　　处：《化工新型材料》2016年第10期150-152,共3页New Chemical Materials

摘　　要：以聚醚多元醇和2,4-二苯基甲烷二异氰酸酯(MDI-50)为原料,二甲硫基甲苯二胺(DMTDA)为扩链剂,采用预聚法分别填充玻璃纤维、石墨片和浮石不同的无机填料制得聚氨酯弹性体(PUE)/玻璃纤维、PUE/石墨片和PUE/浮石3种复合PUE。采用扫描电镜(SEM)、热重分析(TGA)及力学性能测试对3种复合PUE的断面形貌、热稳定性和抗压强度进行了表征。结果表明,添加玻璃纤维、石墨片和浮石后对复合PUE的力学性能和热稳定性均有增强作用。纯PUE抗压强度为3.53MPa,添加质量分数为40%的玻璃纤维、石墨片和浮石制得的3种复合PUE抗压强度分别为3.73、4.30和4.33MPa,比未添加填料的PUE分别提高5.67%、21.81%和22.66%;在失重率为5%时,纯PUE的分解温度为253.70℃,3种复合材料的分解温度分别为277、261和260℃,比未添加无机填料的PUE分别提高9.18%、2.88%和2.48%。Polyurethane elastomer composites were prepared from polyether polyol and diphenyl methane diisocya- nate （MDI-50）, with the chain extender of dimethythiotoluene diamine （DMTDA） ,added with three kinds of inorganic fill- ers including glass fiber, graphite flake and pumice, separately. The morphology, themostability and compression strength were characterized by scanning electron microscope （SEM）, thermogravimetric analysis （TGA） and mechanical test. The results showed that properties of polyurethane with glass fibre, graphite flake and pumice composites possessed better than that of polyurethane. The compressive strength of compound PUE with 40% mass fraction of glass fiber, graphite sheet and pumice respectively was 3.73, 4.30 and 4.33MPa. Compared to the compressive strength of pure PUE, which was 3.53MPa,increasing 5.67% ,21.81% and 22.66%. When the weight loss rate was 5% ,the decomposition temperature of composites was 277,261 and 260℃, respectively. Compared to the decomposition temperature of pure PUE, which was 253.70℃ ,increasing 9.18%,2.88% and 9.18%.

关 键 词：聚氨酯 复合弹性体 无机填料 性能 

分 类 号：TQ334[化学工程—橡胶工业]