Tribological and compressive creep properties of polytetrafluoroethylene/nickel‐titanium shape memory alloy composites

Abstract

In order to improving the reliability and service life of polytetrafluoroethylene (PTFE) composites. Micro nickel-titanium shape memory alloy (NiTi) particles were incorporated with PTFE powder to develop the PTFE composites by using filling modification technology. Herein, 25 kinds of PTFE composites with different contents of micro NiTi particles were prepared, of which the tribological and compressive creep properties were investigated in detail considering the factors such as the NiTi content (0,10,20, 30, 40, and 50 wt%),20, 30, 40, and 50 MPa), and tested conditions(10 N, 10 Hz, 6 mm, 20 min). The filled different contents of NiTi particles could

Creep properties and damage mechanism of molded glass fiber reinforced plastic

“…Creep is also an important mechanical property of composite materials, which refers to the phenomenon that the deformation gradually increases with time under a constant load lower than the tensile strength. [24][25][26][27] The creep mechanism in composites is often complex, which is mainly due to the resin matrix, [28,29] but is also significantly influenced by the fiber orientation and distribution. [30] Eftekhari et al [31] performed creep tests on short glass fiber reinforced injection molded thermoplastic composites in flat sheets.…”

The sustainable recycling of polyvinylidene fluoride membrane for tribological application

“…The excellent chemical stability, corrosion resistance and self-lubricating effect of polytetrafluoroethylene (PTFE) has attracted much attention as the solid engineering material with the smallest friction coefficient. [16][17][18] However, the application of PTFE is limited due to the high cost, poor mechanical property, and wear resistance. [19][20][21] PVDF is considered as a substitute for PTFE for some tribological conditions because of its low cost, better solubility and wear resistance.…”

Effect of homologous molecular crosslinking on the tribological properties of PTFE composites

“…To enhance the mechanical and tribological characteristics of PTFE, researchers have proposed techniques like the use of surface modification, [4][5][6][7] filling modification, [8][9][10] and blending modification. 8,[11][12][13] PTFE matrix composites were also obtained from the original binary composites, 3,14 the later multicomponent composites, 8,[15][16][17] and combinations of both methods. [18][19][20][21] Filling various inorganic or organic reinforcing phases is one of the most simple and effective methods to prepare PTFE composites with excellent properties.…”

“…To enhance the mechanical and tribological characteristics of PTFE, researchers have proposed techniques like the use of surface modification, 4–7 filling modification, 8–10 and blending modification 8,11–13 . PTFE matrix composites were also obtained from the original binary composites, 3,14 the later multicomponent composites, 8,15–17 and combinations of both methods 18–21 …”