Abstract

To investigate the effects of the addition of rare earth (RE) on properties of paper-based friction materials, six samples with LaCl₃•7H₂O contents of 0, 1, 2, 3, 4, and 5wt% were prepared. The results showed that adding a certain amount of RE can greatly improve the interfacial bonding strength, but when the content of RE exceeds 3wt%, it has a negative effect on the bonding strength. In addition, with the increase of RE contents, the thermal diffusivities and thermal conductivities of the materials reached maximum values at 3wt%. When the RE content is 4wt%, the sample has the best wear resistance and the friction coefficient also reaches 0.1449. This work indicated that the addition of the RE can immensely enhance the performance of paper-based friction materials, and lays a foundation for the improvement of interfacial bonding strength of paper-based friction materials in the future.

摘要

为了研究稀土 (RE) 的添加对纸基摩擦材料性能的影响，六个含有 LaCl ₃ •7H _{2 的}样品制备了 0、1、2、3、4 和 5wt% 的 O 含量。结果表明，加入一定量的RE可以大大提高界面结合强度，但当RE含量超过3wt%时，对结合强度有负面影响。此外，随着稀土含量的增加，材料的热扩散率和热导率在 3wt% 时达到最大值。当RE含量为4wt%时，试样的耐磨性最好，摩擦系数也达到0.1449。该工作表明，稀土的加入可以极大地提高纸基摩擦材料的性能，为今后提高纸基摩擦材料的界面结合强度奠定基础。