热固性树脂的类型对纸基摩擦材料性能的影响
Effect of thermosetting resins on properties of paper-based friction materials
周文灵 1林洺岑 1姚烨 1张春辉1
作者信息
- 1. 华南理工大学轻工科学与工程学院,广东 广州 510640
- 折叠
摘要
采用湿法成型技术分别制备了以腰果壳油改性酚醛树脂(PF)、双马树脂(BMI)、聚酰亚胺树脂(PI)、双酚A环氧树脂(EP)和苯并恶嗪树脂(BOZ)为粘结剂的5种不同热固性树脂的纸基摩擦材料,分析了温度与时间对纸基摩擦材料中树脂固化度的影响,探讨了树脂类型对纸基摩擦材料剪切强度、压缩回弹性能、动态热力学性能和摩擦磨损性能的影响.结果表明,5种树脂的固化度均随温度提高和时间的延长而增大.以不同树脂为粘结剂的纸基摩擦材料的力学性能有明显差异,其中以BMI为粘结剂的纸基摩擦材料(BMI-F)结构致密,具有最佳的力学性能:样品剪切强度2.28 MPa,压缩回弹性能和热力学性能稳定.同时,BMI-F在2.96、4.50和5.60 MPa下的平均动摩擦系数分别为0.133、0.127和0.121,静摩擦因数分别为0.161、0.157和0.154,磨损率0.89×10-8m3/(N·m),摩擦磨损性能最佳.
Abstract
The paper-based friction materials with five different thermosetting resins of cashew nut shell liquid modified phenolic resin(PF),bismaleimide resin(BMI),polyimide resin(PI),bisphenol A epoxy resin(EP)and benzoxazine resin(BOZ)as the binder were prepared by utilizing wet-forming technology.The effects of temperature and time on the solidification of resins in paper-based friction materials were analyzed.Meanwhile,the influences of different resins on the shear strength,compression rebound performance,dynamic thermomechanical properties,and frictional wear properties of paper-based friction materials were investigated.The results demonstrated that the solidification of the five resins became larger with the increase of temperature and time.The mechanical properties of the paper-based friction materials with diverse resins as the binder were obviously different.Among them,the paper-based friction material(BMI-F)with BMI as the binder had a denser structure with the best mechanical properties:the sample shear strength 2.28 MPa,compression re-silience and thermomechanical properties remained stable.At the same time,the average dynamic friction coefficient of BMI-F at 2.96,4.50,and 5.60 MPa was 0.133,0.127,and 0.121,respectively,while the static friction factors was 0.161,0.157,and 0.154,respec-tively.The wear rate was 0.89×10-8 m3/(N·m),presenting the best friction and wear performance.
关键词
纸基摩擦材料/树脂/固化度/力学性能/摩擦/磨损Key words
paper-based friction material/resin/curing degree/mechanical property/friction/wear引用本文复制引用
基金项目
高性能湿式纸基摩擦材料基纸(D8216860)
出版年
2024
NETL
NSTL
万方数据