2,5-二巯基-1,3,4-噻二唑2,4-甲苯二异氰酸酯共聚物纳米粒子的制备及抗磨性能

Preparation and Wearability of 2,5-Dimercapto- 1,3,4-thiadiazole Toluene 2,4-Di-iso-cyanate Copolymer Nanoparticles

合成了主链中含噻二唑环的共聚物 ,以期改善聚合物作为润滑添加剂的摩擦学性能。用高分辨透射电镜、傅立叶红外光谱仪和热分析对该纳米粒子进行了表征 ,用四球摩擦试验机考察了共聚物纳米粒子作为高水基润滑添加剂的润滑性能 ,用扫描电子显微镜观察了钢球摩擦表面形貌。结果表明 ,该共聚物纳米粒子能分散于水中且具有较好的抗磨性能 ,在负荷 3 0 0N、转速 1 45 0r/min、3 0min的实验条件下 ,当添加质量分数为 0 5 0 %时 ,磨斑直径为 0 78mm、摩擦系数为 0 2 1。

Copolymer nanoparticles was prepared from 2,5 dimercapto 1,3,4 thiadiazole and toluene 2,4 di iso cyanate and characterized by HRTEM?FTIR?TG and DTA techniques. The tribological properties of the nanoparticles as an additive in water were evaluated in a four ball tester. The morphologies on the worn surfaces of the lubricated GCr15 steel were investigated by means of SEM. Experiment results revealed that tribological performance is highly improved when the copolymer is used as lubricant additive in water.