Effect of surface roughness and reciprocating time on the tribological properties of the polyimide composites

Song, Jingfu; Liu, Xiaoliang; Ding, Qingjun; Qiu, Jinhao

doi:10.1002/pen.24948

Cited by 15 publications

(6 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For semi-crystalline coatings, plastic deformation is reduced, and a relatively smooth worn surface is observed. The above results showed that the crystallinity of PEEK enhanced the tribological properties [120].…”

Section: Preparation Methodsmentioning

confidence: 63%

A review on tribology of polymer composite coatings

et al. 2020

View full text Add to dashboard Cite

Self-lubricating polymer composite coatings, with tailorable tribological and mechanical properties, have been widely employed on mechanical parts to reduce friction and wear, which saves energy and improves the overall performance for applications such as aerospace satellite parts, shafts, gears, and bushings. The addition of functional fillers can overcome the limitations of single-polymer coatings and extend the service life of the coatings by providing a combination of low friction, high wear resistance, high load bearing, high temperature resistance, and high adhesion. This paper compares the heat resistance, and the tribological and mechanical properties of common polymer matrices, as well as the categories of functional fillers that improve the coating performance. Applicable scopes, process parameters, advantages, and limitations of the preparation methods of polymer coatings are discussed in detail. The tribological properties of the composite coatings with different matrices and fillers are compared, and the lubrication mechanisms are analyzed. Fillers reduce friction by promoting the formation of transfer films or liquid shear films. Improvement of the mechanical properties of the composite coatings with fillers of different morphologies is described in terms of strengthening and toughening mechanisms, including a stress transfer mechanism, shear yielding, crack bridging, and interfacial debonding. The test and enhancement methods for the adhesion properties between the coating and substrate are discussed. The coating adhesion can be enhanced through mechanical treatment, chemical treatment, and energy treatment of the substrate. Finally, we propose the design strategies for high-performance polymer composite coating systems adapted to specific operating conditions, and the limitations of current polymer composite coating research are identified.

show abstract

Section: Preparation Methodsmentioning

confidence: 63%

A review on tribology of polymer composite coatings

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Graphite as a solid lubricating filler was used by the authors of [ 141 , 142 , 143 , 144 , 145 ]. For example, Padhan et al investigated a combined effect of fillers (total 20 wt.%) in the ‘PAEK + SGF + Gr + PTFE’ composites, especially with increasing the PTFE content [ 143 ].…”

Section: Plane Contactsmentioning

confidence: 99%

High Performance Polymer Composites: A Role of Transfer Films in Ensuring Tribological Properties—A Review

2022

View full text Add to dashboard Cite

The purpose of this review is to summarize data on the structure, mechanical and tribological properties, and wear patterns of composites based on high-performance polymers (HPPs) intended for use in friction units. The review includes three key sections, divided according to the tribological contact schemes regardless of the polymer matrix. In the second part, the analysis of composites is carried out in point contacts. The third section is devoted to the results of studies of HPP-based composites in linear ones. The fourth section summarizes information on flat contacts. Particular attention is paid to the formation of transfer films (TFs) in the contacts and their influence on the tribological patterns of the studied rubbing materials. As a conclusion, it is noted that the challenge of experimental methods for analyzing TFs, stated by K. Friedrich, is effectively solved in recent studies by the XPS method, which enables us to accurately determine their composition. Although this determination is completed after the tribological tests, it allows not only a more accurate interpretation of their results considering specific conditions and loading schemes, but also the ability to design HPP-based composites that form required TFs performing their preset functions.

show abstract

“…With increasing CF 4 content, large numbers of active fluorine‐containing species are generated, etching rate is increased, [ 22 ] and nano‐scale grooves was enlarged, [ 23,24 ] which resulting in higher roughness. [ 25‐27 ]…”

Section: Resultsmentioning

confidence: 99%

Plasma treatment of polymethyl methacrylate to improve surface hydrophilicity and antifouling performance

Sui

Shen

et al. 2020

Polymer Engineering & Sci

View full text Add to dashboard Cite

Surface modification of polymethyl methacrylate (PMMA) by O2/CF4 plasma is investigated to improve hydrophilicity and antifouling performance of PMMA. The PMMA surface before and after treatment is characterized by atomic force microscopy, contact angle measurement, and X‐ray photoelectron spectroscopy. Antifouling properties are evaluated by protein adsorption and bacterial adhesion experiments using Staphylococcus aureus in vitro. Higher O2 content in the mixture gas promotes hydrophilicity of the plasma‐treated PMMA, while a hydrophobic surface forms at higher CF4 content. Modifying PMMA improves antifouling performance regardless of the O2/CF4 volume ratio, and this improvement increases with rising CF4 content in O2/CF4 plasma working gas. Functional groups CO and CF are detected in O2/CF4 plasma‐treated PMMA surface and the ratio of CO to CF can be controlled by the O2/CF4 volume ratio in the plasma working gas.

show abstract

Effect of surface roughness and reciprocating time on the tribological properties of the polyimide composites

Cited by 15 publications

References 26 publications

A review on tribology of polymer composite coatings

A review on tribology of polymer composite coatings

High Performance Polymer Composites: A Role of Transfer Films in Ensuring Tribological Properties—A Review

Plasma treatment of polymethyl methacrylate to improve surface hydrophilicity and antifouling performance

Contact Info

Product

Resources

About