【摘要】 分别在预聚物体系中添加质量份数为0.3%,0.7%,1.0%,1.3%的坡缕石纳米(称为P纳米),原位合成坡缕石/桐油酚醛树脂(P/TPF)。用TEM观察纳米粒子在树脂中的分散状况,用SETARAM TG-DSC92-16热分析仪对合成的树脂进行了TG分析;将所合成的树脂分别制作成编织摩擦材料并在DMS-1试验机上对其摩擦学性能进行测试。结果表明:P纳米份数在0.3%~1.0%范围内P/TPF热失重率在240~600℃的中温区近于线性递减;当P纳米份数为1.0%时树脂的耐热性及其摩擦材料综合性能最佳,抗热衰温度可达280℃,200℃耐磨性最好,磨损率比无纳米桐油酚醛树脂摩擦材料提高15%。更多还原

【Abstract】 0.3%,0.7%,1.0% and 1.3% of the palygorskite nano-particles(P nano-particles) were separately added in prepolymer.Palygorskite/tung oil phenolic resin was synthesized with in-situ method(it is called P/TPF).The disperse state of nano-particles in phenolic resin was observed by TEM,the synthetic resin was carried out TG analysis by SETARAM TG-DSC92-16 thermal analyzer,and the synthetic resin was woven into the production of friction materials and the production was tested on its tribological behavior by DMS-1.The results show that thermal weight loss rate of the resin in the range 0.3%-1.0% of P nano-paricles is linear descending from 240℃ to 600℃.When the mass number of P nano-particles is 1.0% in the resin,the integrative behavior of friction material is most optimized.Temperature of the heat resistance can be up to 280℃.Abrasion resistance of the friction materials is also best and its wear rate is an increase of 15% compared with tung oil phenolic resin without P nano-particles.更多还原