摘要
以混合聚醚和甲苯二异氰酸酯(TDI)为原料合成的预聚体作为A组分,以聚醚N220、3,3'-二氯-4,4'-二氨基二苯基甲烷(MOCA)、1,4-丁二醇(BDO)、水、辛酸亚锡、氧化铈粉末磨料等的混合物为B组分,将A、B均匀混合,通过半预聚体法合成了微孔聚氨酯弹性体。考察了不同磨料含量、BDO和MOCA比例及发泡剂水用量对微孔聚氨酯弹性体力学性能的影响,通过傅里叶变换红外光谱表征了微孔聚氨酯弹性体的微观结构,并通过动态力学分析(DMA)研究了微孔聚氨酯弹性体的动态力学性能。结果表明,磨料质量分数为14%、BDO和MOCA摩尔比为3∶7及水质量分数为0.6%时,制备的微孔聚氨酯弹性体力学性能较好,与进口样品接近;在环境温度低于50℃时,材料具有良好的抗形变能力和冲击强度;起始分解温度约为200℃,是一种性能良好的聚氨酯抛光材料。
Prepolymers synthesized by polyether polyols and toluene diisocyanate （TDI） was component A. The mixture of N220, 3,3＇-diehloro-4,4＇-diamino dianilino methane （ MOCA）, 1,4-butanediol （ BDO）, water, stanflous octoate, fillers （eeria） was component B. The microcellular polyurethane elastomer was synthesized through a kind of semi-prepolymer method by mixing component A and B uniformly. The effects of different abrasive content, the BDO/MOCA ratio, and water dosage on physical properties of microeellular polyurethane elastomer were studied. The microstructure structure and the dynamic mechanical properties were analyzed by means of Fourier transform infrared （ FF-IR ） spectroscopy and DMA. The results showed that, when abrasive content was 14%, BDO/MOCA molar ratio was 3：7 and water dosage was 0.6%, mechanical properties of microeellular poly- urethane elastomer were better close to imported sample. When the ambient temperature was below 50 ℃, the abili- ty of resistance deformation and impact strength of the material were good, the initial decomposition temperature of material was about 200 ℃ and it was a good polishing material.
出处
《聚氨酯工业》
北大核心
2016年第3期14-17,共4页
Polyurethane Industry
基金
山西省科技攻关(20100311033)
