Preparation and Tribological Performance of High‐Temperature‐Resistant Polyimide/ MoS 2 Self‐Lubricating Composites
Source abstract
Abstract
ABSTRACT This study prepares high‐temperature‐resistant polyimide/molybdenum disulfide (PI/MoS 2 ) composites via molecular structure design and composite modification, addressing bearing cage needs under extreme conditions. Rigid p ‐phenylenediamine ( p ‐PDA) is introduced into the PI backbone, raising its glass transition temperature ( T g ) to 430°C–450°C and enhancing thermal stability and mechanical strength. MoS 2 is uniformly dispersed in the PI matrix through in situ polymerization to improve interface compatibility. Friction and wear tests show that 5 wt% MoS 2 content delivers optimal lubrication at room temperature to 300°C, as its layered structure enables interlayer sliding and forms a stable transfer film for solid lubrication. The synergistic effect of rigid units and nanofillers optimizes PI's thermal stability and tribological properties, revealing related mechanisms and expanding PI's engineering applications.
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Research context
OpenAlex topics: Tribology and Wear Analysis · Synthesis and properties of polymers · Polymer Nanocomposites and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Research Center for Analysis and Testing Technology Shenyang Jianzhu University Shenyang China
School of Material Science and Engineering Shenyang Jianzhu University Shenyang Liaoning China
School of Mechanical Engineering Shenyang Jianzhu University Shenyang Liaoning China
Funding
National Key Research and Development Program of China
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