Mechanical performance of nanosilica filled quartz fiber/polyimide composites at room and elevated temperatures

Wang, Jie; Zhou, Weihua; Luo, Fa; Zhu, Dongmei; Qing, Yuchang

doi:10.1007/s10853-017-1341-x

Cited by 14 publications

(2 citation statements)

References 40 publications

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“…From Figure 8e, many smooth regions can be seen on the worn surface of HDPE composites filled with 20 wt % SCFs, while only broken fibers are observed, indicating a better wear resistance of HDPE composites compared with that filled with 15 wt % SCFs. However, it can be seen from Figure 8f that many cracks were generated on the worn surface of HDPE composites when the content of SCFs further increased to 25 wt %; the main reason can be attributed to the stress concentration around SCFs caused by the agglomeration of SCFs when the volume content of filler is relatively high [11,37]. The worn surface of HDPE composites with different content of SCFs at 20 °C are analyzed to evaluate the wear resistance of HDPE composites, and the results are shown in Figure 8.…”

Section: Effects Of Temperature On Tribological Propertiesmentioning

confidence: 99%

High-Temperature Tribological Behavior of HDPE Composites Reinforced by Short Carbon Fiber under Water-Lubricated Conditions

2022

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The polymer water-lubricated bearing is widely used in marine transmission systems, and the tribological properties can be improved by addition of inorganic nano-fillers. The aim of this study is to investigate the effect of SCFs and temperature on the water-lubricating properties of high-density polyethylene (HDPE) composites. HDPE composites reinforced by varying content of short carbon fibers (SCFs) were fabricated via twin-screw extrusion and injection molding techniques to study the hardness and surface wettability of those composites. The tribological properties under water-lubricated conditions were investigated through a pin-on-disk reciprocating tribometer under different temperatures. The results showed that the increase in hardness of HDPE composites reached maximum to 42.9% after adding 25 wt % SCFs. The contact angle also increased with the increase in SCFs content and reached a maximum of 95.2° as the amount of SCFs increased to 20 wt %. The incorporation of SCFs increased the wear resistance and lubricating property of HDPE composites at different temperatures. The HDPE composite containing 20 wt % SCFs showed the lowest friction coefficient of 0.076 at 40 °C, and the wear track depth reached a maximum of 36.3 mm at 60 °C. Based on the surface wetting property and wear analysis, potential effect mechanisms of fillers and temperature were discussed. The knowledge from this study is useful for designing the anti-wear water-lubricated polymer bearing.

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Section: Effects Of Temperature On Tribological Propertiesmentioning

confidence: 99%

High-Temperature Tribological Behavior of HDPE Composites Reinforced by Short Carbon Fiber under Water-Lubricated Conditions

2022

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“…It is light in weight, odorless, non‐toxic, has high thermal stability, and has a high specific surface area that gives it an edge over other hydrophobic‐inducing liquids 6–9 . Moreover, adding nano‐SiO 2 (NS) enhances the properties of materials, such as their stiffness, strength, and durability 10–15 . It acts as a reinforcing agent in polymer composites.…”

Section: Introductionmentioning

confidence: 99%

A study on functionalization process of silicon dioxide nanoparticles for hydrophobic coating applications

Kumar,

Negi,

Kar

2024

Surface & Interface Analysis

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Functionalized nano‐SiO2 is an inorganic compound that exhibits hydrophobic properties upon the addition of a silane group through a chemical reaction. This property is highly effective in surface modification for various substrates, including glass, metal, and ceramics. These surface modifications find applications in self‐cleaning, anti‐fogging coatings, and water‐repellent materials. In this work, the role of nano‐SiO2 and Hexadecyltrimethoxysilane (HDTMS) functionalized nano‐SiO2 has been synthesized successfully by the sol–gel method for coating applications. The outcomes of water contact angle (WCA), analysis, Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA), scanning electron microscope (SEM), and transmission electron microscope (TEM) observations revealed the successful grafting of hydrophobic long‐chain alkyl groups from HDTMS onto the surface of SiO2 nanoparticles. Notably, when the ratio of SiO2 nanoparticles to HDTMS is 0.25:1, the WCA of the functionalized SiO2 nanoparticles is enhanced significantly. This value is 5.35 times greater than the initial angle of contact before the modification, leading to the achievement of a super hydrophobic property.

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Milling force of quartz fiber–reinforced polyimide composite based on cryogenic cooling

Wang

Zhang

Wang

2019

Int J Adv Manuf Technol

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Mechanical performance of nanosilica filled quartz fiber/polyimide composites at room and elevated temperatures

Cited by 14 publications

References 40 publications

High-Temperature Tribological Behavior of HDPE Composites Reinforced by Short Carbon Fiber under Water-Lubricated Conditions

High-Temperature Tribological Behavior of HDPE Composites Reinforced by Short Carbon Fiber under Water-Lubricated Conditions

A study on functionalization process of silicon dioxide nanoparticles for hydrophobic coating applications

Milling force of quartz fiber–reinforced polyimide composite based on cryogenic cooling

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