文献类型：期刊文献

英文题名：Tribological Properties of PTFE Composites Reinforced With Attapulgite-Loaded Layered Double Hydroxides

作者：Xie, Jikai Hao, Zhi Yin, Hong Luo, Zhu Zhao, Qiuyu Wu, Hankuo He, Ruhui Yang, Le

第一作者：Xie, Jikai

通信作者：Hao, Z[1]

机构：[1]Guizhou Univ, Coll Mat & Met, Guiyang, Peoples R China;[2]Guizhou Univ, Sch Mech Engn, Guiyang, Peoples R China;[3]Guizhou Inst Technol, Guiyang, Peoples R China

第一机构：Guizhou Univ, Coll Mat & Met, Guiyang, Peoples R China

通信机构：corresponding author), Guizhou Univ, Coll Mat & Met, Guiyang, Peoples R China.

年份：2026

外文期刊名：POLYMER COMPOSITES

收录：;Scopus(收录号：2-s2.0-105037533883);WOS:【SCI-EXPANDED(收录号:WOS:001753158500001)】；

基金：This work was supported by the Guiyang City Science and Technology Plan Project ([2023] 48-3) and the Science and Technology Department of Guizhou Province ([2023] 315).

语种：英文

外文关键词：attapulgite; layered double hydroxide; polytetrafluoroethylene; tribology

摘要：Polytetrafluoroethylene (PTFE) is a vital self-lubricating engineering material with exceptional chemical stability and inherent low friction, yet its inferior mechanical properties and high volumetric wear rate (16.517 & times; 10-13 m3/(N m) for pure PTFE) severely restrict engineering applications. To mitigate this, a core-shell nanofiller (ATP@LDHs) was synthesized via in situ coprecipitation, via uniform deposition of layered double hydroxides (LDHs) on attapulgite (ATP) nanorods. The nanofiller was incorporated into PTFE to fabricate a PTFE-based composite via cold-press sintering. The resultant composite exhibits a 116-fold reduction in volumetric wear rate (to 0.142 & times; 10-13 m3/(N m)), a low stable friction coefficient of 0.17, and enhanced matrix tensile strength, elongation at break, compressive strength, and hardness. This outstanding performance stems from a synergistic dual mechanism: ATP@LDHs reinforces the PTFE matrix and induces a tribo-induced robust, wear-resistant transfer film. This work provides a promising strategy to develop high-performance polymer composites tailored for extreme service conditions.