Ionic liquid capped carbon dots as a high-performance friction-reducing and antiwear additive for poly(ethylene glycol)

2016 ◽  
Vol 4 (19) ◽  
pp. 7257-7265 ◽  
Author(s):  
Baogang Wang ◽  
Weiwei Tang ◽  
Hongsheng Lu ◽  
Zhiyu Huang
Keyword(s):  
Ionic Liquid ◽  
Ethylene Glycol ◽  
Carbon Dots ◽  
High Performance ◽  
Antiwear Additive ◽  
Poly Ethylene Glycol ◽  
Friction Reducing ◽  
Poly Ethylene

This work presents ionic liquid capped carbon dots as a high-performance friction-reducing and antiwear additive for poly(ethylene glycol).

scholarly journals Tribological performance of various metal-doped carbon dots as water-based lubricant additives and their potential application as additives of poly(ethylene glycol)

Friction ◽  
2021 ◽  
Author(s):  
Weiwei Tang ◽  
Xuejun Zhu ◽  
Yufeng Li
Keyword(s):  
Ethylene Glycol ◽  
Tribological Properties ◽  
Carbon Dots ◽  
Lubricant Additives ◽  
Poly Ethylene Glycol ◽  
Wear Properties ◽  
Water Based ◽  
Friction Reducing ◽  
Poly Ethylene ◽  
Metal Doped

AbstractAdvances in nano-lubricant additives are vital to the pursuit of energy efficiency and sustainable development. Carbon dots (CDs) have been widely investigated in the domain of lubricant additives owing to their extraordinary tribological properties, in particular, their friction-reducing and anti-wear properties. Metal-doped CDs are a new type of CDs, and their friction-reducing and anti-wear properties are attracting increasing attention. Therefore, a series of CDs doped with various divalent metal ions have been successfully synthesized via one-pot pyrolysis. The tribological properties of the synthesized CDs as water-based lubricant additives are in the following order: Zn-CDs > Cu-CDs ≫ Mg-CDs > Fe-CDs > U-CDs. Specifically, adding 1.0 wt% of Zn-CDs into water-based lubricant results in 62.5% friction and 81.8% wear reduction. Meanwhile, the load-carrying capacity of the water-based lubricant increases from 120 N to at least 500 N. Zn-CDs as an additive have long service life. Additionally, anion-tuned Zn-CDs fabricated via anion exchange exhibit promise as lubricant additives for poly(ethylene glycol). Based on the results of wear scar surface analyses, it is discovered that tribochemical films, primarily composed of iron oxides, nitrides, metal carbonates, zinc oxides, zinc carbonates, organic compounds, and embedded carbon cores, formed on the rubbing surfaces with a thickness of approximately 270 nm when Zn-CDs are used as additives. This film combined with the “ball-bearing” and third-particle effects of Zn-CDs contributed to excellent lubrication performance.

Facile synthesis of photoluminescent inorganic–organic hybrid carbon dots codoped with B and N: towards an efficient lubrication additive

2017 ◽  
Vol 46 (36) ◽  
pp. 12306-12312 ◽  
Author(s):  
Yunxiao Zhang ◽  
Tao Cai ◽  
Wangji Shang ◽  
Dan Liu ◽  
Qiang Guo ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Carbon Dots ◽  
High Performance ◽  
Poly Ethylene Glycol ◽  
Facile Synthesis ◽  
Organic Hybrid ◽  
Wear And Friction ◽  
Lubrication Additive ◽  
Poly Ethylene ◽  
Hybrid Carbon

An inorganic-organic carbon dots consisting of an ionic liquid moiety inserted in the carbon skeleton has been synthesized and verified to be a high-performance anti-wear and friction-reducing lubricant additives in poly(ethylene glycol)(PEG).

An Efficient One-Pot Four-Component Hantzsch Reaction to Prepare Hydroquinolines Catalyzed by a Poly(ethylene glycol) Bridged Dicationic Basic Ionic Liquid under Solvent-Free Conditions

2013 ◽  
Vol 781-784 ◽  
pp. 247-252
Author(s):  
Jun Luo ◽  
Tan Tan Xing ◽  
Ying Lei Wang ◽  
Jian Feng Ju
Keyword(s):  
Ionic Liquid ◽  
Ethylene Glycol ◽  
Solvent Free ◽  
Hantzsch Reaction ◽  
Poly Ethylene Glycol ◽  
One Pot ◽  
Solvent Free Conditions ◽  
Basic Ionic Liquid ◽  
Activity Loss ◽  
Poly Ethylene

A piperidine-functionalized poly (ethylene glycol) bridged dicationic ionic liquid PEG800-DPIL(Cl) was synthesized and applied to catalyze the four-component Hantzsch reaction under solvent-free conditions and afford hydroquinolines with high to excellent yields. PEG800-DPIL(Cl) could be recovered by simple workup and recycled for at least eight times without obvious activity loss.

scholarly journals High-Performance Resistive Pressure Sensor Based on Elastic Composite Hydrogel of Silver Nanowires and Poly(ethylene glycol)

Micromachines ◽  
2018 ◽  
Vol 9 (9) ◽  
pp. 438 ◽  
Author(s):  
Youngsang Ko ◽  
Dabum Kim ◽  
Goomin Kwon ◽  
Jungmok You
Keyword(s):  
Composite Material ◽  
Ethylene Glycol ◽  
Pressure Sensor ◽  
High Performance ◽  
Silver Nanowires ◽  
High Sensitivity ◽  
Composite Hydrogel ◽  
Poly Ethylene Glycol ◽  
Pressure Sensing ◽  
Poly Ethylene

Improved pressure sensing is of great interest to enable the next-generation of bioelectronics systems. This paper describes the development of a transparent, flexible, highly sensitive pressure sensor, having a composite sandwich structure of elastic silver nanowires (AgNWs) and poly(ethylene glycol) (PEG). A simple PEG photolithography was employed to construct elastic AgNW-PEG composite patterns on flexible polyethylene terephthalate (PET) film. A porous PEG hydrogel structure enabled the use of conductive AgNW patterns while maintaining the elasticity of the composite material, features that are both essential for high-performance pressure sensing. The transparency and electrical properties of AgNW-PEG composite could be precisely controlled by varying the AgNW concentration. An elastic AgNW-PEG composite hydrogel with 0.6 wt % AgNW concentration exhibited high transmittance including T550nm of around 86%, low sheet resistance of 22.69 Ω·sq−1, and excellent bending durability (only 5.8% resistance increase under bending to 10 mm radius). A flexible resistive pressure sensor based on our highly transparent AgNW-PEG composite showed stable and reproducible response, high sensitivity (69.7 kPa−1), low sensing threshold (~2 kPa), and fast response time (20–40 ms), demonstrating the effectiveness of the AgNW-PEG composite material as an elastic conductor.

Investigation of the role of hydrophilic chain length in amphiphilic perfluoropolyether/poly(ethylene glycol) networks: towards high-performance antifouling coatings

Biofouling ◽  
2011 ◽  
Vol 27 (10) ◽  
pp. 1139-1150 ◽  
Author(s):  
Yapei Wang ◽  
Louis M. Pitet ◽  
John A. Finlay ◽  
Lenora H. Brewer ◽  
Gemma Cone ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Chain Length ◽  
High Performance ◽  
Poly Ethylene Glycol ◽  
Antifouling Coatings ◽  
Poly Ethylene
Sign in / Sign up

Export Citation Format

Share Document