Effect of LNBR Content on the Properties of the Carbon Fiber–Reinforced Paper-Based Friction Materials

Abstract

The binder plays an important role in transmitting loads and maintaining the stability of paper-based friction materials. Four kinds of binder-based carbon fiber–reinforced paper-based friction materials were prepared. The effects of the ratio of the liquid nitrile butadiene rubber (LNBR) and phenolic resin (PF) content on the friction and wear properties were investigated. It was found that the dynamic and static friction coefficients would increase with an increase in LNBR content. When the content of PF and LNBR was kept at 20 wt%, the friction materials had lower wear rates and better thermal stability. These phenomena indicated that a certain amount of rubber in the binder could improve the friction and wear properties of the friction materials.

Keywords:

• Elastomers
• surface roughness
• boundary lubrication friction
• wear
• polymers
• squeeze-film lubrication

Additional information

Funding

This work was supported by the National Natural Science Funds (Grant Number 51521061), the “111” project (Grant Number 08040), the fund of the State Key Laboratory of Solidification Processing in NWPU (Grant Number SKLSP201751), and National Key R&D Program China (Grant Number 2017YFB0308300).