酚醛树脂乳液的合成及在摩擦材料中的应用

:讨论了乳化剂用量对酚醛树脂乳液性能的影响 ,通过干燥工艺的研究和摩擦材料性能的比较表明 ,酚醛树脂乳液用于湿式摩擦材料是可行的

SYNTHESIS OF THE RESOLE EMULSION AND ITS APPLICATION IN FRICTIONAL MATERIALS

The stable resole emulsion was synthesized, of which the stability, the solid content and the rate of polymerization increased with the increasing of the amount of emulsifier, whereas the gelation time and the fluidity of the phenolic resin from the emulsion decreased. The clutch lining with the phenolic emulsion as the matrix (binder) was prepared by way of wet process. The properties including friction coefficient, wear rate, bending strength, impact resistance, Rockwell hardness and density of the clutch lining were determined. The clutch lining possesses good impact resistance, low Rockwell hardness and low density. The experimental results indicate that the resole emulsion can be used for wet process frictional materials.