China Mechanical Engineering ›› 2021, Vol. 32 ›› Issue (11): 1283-1292.DOI: 10.3969/j.issn.1004-132X.2021.11.003

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Study on Tribological Properties of Phenolic Resin Impregnated Graphite/SiC Ceramic Sealing Materials#br#

PENG Xudong1;HE Liangjie1;JIANG Jinbo1;MENG Xiangkai1;HU Liguo2;GUO Jungang2   

  1. 1. Engineering Research Center of Process Equipment and Its Remanufacture, Ministry of Education, Zhejiang University of Technology, Hangzhou, 310032
    2. The 18th Institute of China Academy of Launch Vehicle Technology, Beijing, 100076
  • Online:2021-06-10 Published:2021-06-25

浸酚醛树脂石墨/SiC密封材料摩擦学特性研究

彭旭东1;何良杰1;江锦波1;孟祥铠1;胡丽国2;郭军刚2   

  1. 1. 浙江工业大学过程装备及其再制造教育部工程研究中心,杭州,310032
    2. 中国运载火箭技术研究院第18研究所, 北京,100076
  • 作者简介:彭旭东,男,1964年生,教授、博士研究生导师。研究方向为摩擦学与表面工程和流体密封技术。E-mail: xdpeng@126.com。
  • 基金资助:
    国家自然科学基金-航天先进制造技术研究联合基金 (U1737202);
    国家自然科学基金(52076195);
    国家重点研发计划(2018YFB2000800)

Abstract: UMT-3 multifunctional friction and wear testing machine was used to study the tribological characteristics of 3 kinds of homemade typical matching friction pairs of impregnated phenolic resin graphite and SiC ceramic under dry friction and oil lubrication conditions. Results show that the friction coefficient presents a downward trend with the increase of the product of load p and speed v (pv values) under dry friction conditions. The wear mechanism is mainly abrasive wear and adhesive wear when the pv value is low, but it changes to severe adhesive wear, abrasive wear and fatigue wear when the pv value is high. The influences of speed on wear rate is greater than that of load under the same conditions. Under the conditions of oil lubrication, the friction coefficient is always kept at about 0.1, and the wear mechanism is mainly adhesive wear and fatigue wear. When the pv values increase to 5 MPa·m/s, the surface maximum temperature rise of the 3 kinds of impregnated graphite is as 21.1 ℃ under dry friction conditions, and that is as 14.9 ℃ under oil lubrication conditions, meanwhile the temperature rises of H1 graphite are both the lowest. Considering the mechanics properties, tribological properties and face temperature rise of the impregnated resin graphite, the recommended graphitization degree is as 45%~55%.

Key words: phenolic resin impregnated graphite, SiC ceramic, aviation hydraulic oil, friction coefficient, wear mechanism

摘要: 采用UMT-3多功能摩擦磨损试验机研究了3种国产典型浸酚醛树脂石墨与SiC陶瓷配对副在干摩擦和油润滑条件下的摩擦学特性,结果表明:干摩擦下,摩擦因数随载荷p与速度v的乘积(pv值)的增大呈下降趋势;pv值较小时,磨损机理主要为轻微黏着磨损和磨粒磨损,pv值较大时则变为严重黏着磨损、磨粒磨损和疲劳磨损;相同条件下的磨损率受速度的影响比受载荷的影响更大;油润滑下,摩擦因数保持在0.1左右,磨损机理主要为黏着磨损和疲劳磨损;pv值增至5 MPa·m/s时,干摩擦下3种浸渍石墨摩擦副表面最大温升为21.1 ℃,油润滑下最大温升为14.9 ℃且H1石墨温升均最低。综合考虑浸渍树脂石墨的力学性能、摩擦学特性和端面温升,推荐石墨化度为45%~55%。

关键词: 浸酚醛树脂石墨, SiC陶瓷, 航空液压油, 摩擦因数, 磨损机理

CLC Number: