共混法制备酚醛树脂基纳米坡缕石复合材料及其摩擦学性能

Tribological Behavior of Friction Materials Based on Palygorskite Nanometer/Phenolic Composite Resin with Solution Mixing

用溶液共混法制备了纳米坡缕石/桐油-酚醛复合树脂(M-P/TPF),用TEM电镜表征了纳米分散状态和SETARAM TG-DSC92-16热分析仪对M-P/TPF、原位法制备的S-P/TPF以及纯TPF的耐热性进行对比分析,并将各树脂制成的摩擦材料在DMS-1摩擦材料试验机上进行了摩擦性能测试。结果表明:含质量分数0.7%纳米坡缕石复合M-P/TPF中的纳米粒子有较好的分散性,在600℃时的热失重较TPF下降6%而略高于S-P/TPF。M-P/TPF摩擦试样的抗热衰退能力与S-P/TPF相当,比TPF提高近50℃,具有较好的摩擦学性能。

Palygorskite/tung oil phenolic complex material （M-P/TPF） was prepared by means of solution mixing.The scattered state of the nano-particles was characterized by transmission electron microscope （TEM）.The heat resistance of M-P/TPF was analyzed by thermal analyzer and was contrasted with S-P/TPF （prepared by means of in-situ polymerization） and TPF （without palygorskite nano-particles）.The tribological behaviors of the three kinds of friction materials separately made of M-P/TPF,S-P/TPF and TPF were tested on friction material test machine.The results show that palygorskite nano-particles with 0.7% in M-P/TPF have good dispersibility,and the thermal weight loss of M-P/TPF decreases by 6% compared with TPF,its heat resistance is close to S-P/TPF’s and is 50 ℃ higher than TPF’s. So the M-P/TPF has good tribological behavior.