3D printing of PTFE-filled polyimide for programmable lubricating in the region where lubrication is needed

Yao, Xinle; Liu, Sen; Ji, Zhongying; Guo, Rui; Sun, Cheng; Guo, Yuxiong; Wang, Xiaolong; Wang, Qihua

doi:10.1016/j.triboint.2021.107405

Cited by 17 publications

(4 citation statements)

References 24 publications

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“…Te research and development of photosensitive polyimides (PSPIs) mainly focus on the innovation of their synthesis routes. Te traditional synthesis method involves the polymerization of dianhydride and diamine monomers, frst generating polyamic acid (PAA), and then undergoing a cyclodehydration reaction to imidize [37][38][39]. In order to introduce photosensitivity into polyimides, researchers have adopted three main strategies.…”

Section: Photosensitive Polyimidesmentioning

confidence: 99%

Advancements in Synthesis Strategies and Optoelectronic Applications of Bio-Based Photosensitive Polyimides

Yu,

Ma,

Chang

et al. 2024

International Journal of Optics

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With the rapid development of information, energy, and materials industries in China, the demand for high-performance polymers is gradually increasing. Photosensitive polyimide (PSPI) has emerged as an ideal choice for high-performance optoelectronic materials due to its outstanding thermal stability, mechanical strength, and low dielectric constant. In particular, bio-based photosensitive polyimide prepared from bio-based chemicals, as a green polymer material, not only reflects the advantages of environmental protection and resource efficiency but also contributes to carbon neutrality. However, how to improve the photolithography efficiency while maintaining the thermodynamic performance and environmental friendliness and how to balance the pros and cons of low-molecular-weight matrixes are still challenges in the research. This review systematically summarizes the synthesis and performance characteristics of photosensitive polyimides, bio-based polyimide, and bio-based photosensitive polyimides and further explores the future application prospects of bio-based polyimides in the field of high-performance optoelectronic materials.

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Section: Photosensitive Polyimidesmentioning

confidence: 99%

Advancements in Synthesis Strategies and Optoelectronic Applications of Bio-Based Photosensitive Polyimides

Yu,

Ma,

Chang

et al. 2024

International Journal of Optics

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“…They are widely used in aerospace, automobile manufacturing, microelectronics, and other fields. Yao et al [69] used polytetrafluoroethylene (PTFE) micro powder compound-ing to make 3D-printed polyimide with good anti-friction and anti-wear properties (Figure 6b). Systematically examining the effects of light-cured 3D printing forming techniques on the tribological properties of polyimide made this possible.…”

Section: D Printing Of Lubricating Polymer Compositionsmentioning

confidence: 99%

Additive Manufacturing of Polymer‐Based Lubrication

Hossain

Jiang

Yao

et al. 2023

Macro Materials & Eng

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The fast growth of 3D printing technology gives designers many ways to make structures that are hard to see. 3D printing lets you customize complex structures in any way you want and make rapid prototypes of materials. It enables you to simulate things more effectively. So far, experiments with polymer‐based lubrication have been done on atomically smooth surfaces, under dynamic conditions, and on the nano‐ or micro‐scale. Polymer‐based lubrication in 3D printing has been studied in depth, which has made it possible to make significant, multifunctional 3D structures with microscale accuracy. It is a crucial way to approach lubrication and has sparked much scientific interest. A thorough literature review is done to keep track of the latest advances in 3D printing for structural polymer‐based lubrication simulation. The design and lubrication performance quality of bio‐inspired, different‐sized simulation structures is given much attention. The material requirements, skills, and representative applications of various 3D printing technologies are summarized. The efficient directions for future research in designing and making 3D‐printed lubrication structures are also pointed out.

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“…Lu et al 29 revealed that a top coating of MoS 2 /PTFE on the AlCrN coating can reduce the coefficient of friction. By applying 3D printing technology, Yao et al 30 fabricated some bearing cages with the PTFE-filled PI composite, and their results showed that the coefficient of friction and wear rate in air reduced by 88 and 98% in comparison with pure PI, respectively. Wang et al 31 found that the black phosphorous-filled PTFE composite represents a much lower coefficient of friction under drying and water environments.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of the Polyimide-MoS₂/PTFE Composite with High Strength and Self-Adaptive Lubricating Performance in Air and Vacuum

Wang

et al. 2023

ACS Appl. Polym. Mater.

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Polyimide (PI)-MoS 2 /poly(tetrafluoroethylene) (PTFE) composites are prepared using the hot press molding technique at 380 °C and 100 MPa. As the composition is PI-12.5 wt % MoS 2 -2.5 wt % PTFE, the composite possesses both high strength and excellent self-adaptive lubricating performance in air and vacuum. The average strength/modulus of compression and bending is 183.36 MPa/2.41 GPa and 151.93 MPa/3.98 GPa, respectively. PTFE is primarily transferred to form a continuous transfer film on the counterpart, which makes the coefficient of friction in both air and vacuum smaller than 0.20 at the initial stage. With the wastage of PTFE at the track, MoS 2 and PI gradually become dominant for the oriented shear layer in vacuum, which further decreases the coefficient of friction below 0.05. Nevertheless, from the beginning to the end, the transfer of PTFE is more firm in air, which causes PTFE to be the dominant component at the friction interface, resulting in the coefficient of friction below 0.2 for the whole stage. In the mechanism, PTFE is not negatively influenced by water because of its nonpolar and inertial essence, while MoS 2 and polar PI are sensitive to oxygen and water, which can restrain the slide within the shear layer and transfer film or between them. Additionally, original flake-like PTFE particles transform to spherulites due to recrystallization during the sintering process, which is beneficial for the enhancement of both strength and self-lubricating performance. The characteristics of this composite, i.e., wear performance, surface, friction interface, microstructure, mechanical performance, and applications in engineering, are systematically studied.

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3D printing of PTFE-filled polyimide for programmable lubricating in the region where lubrication is needed

Cited by 17 publications

References 24 publications

Advancements in Synthesis Strategies and Optoelectronic Applications of Bio-Based Photosensitive Polyimides

Advancements in Synthesis Strategies and Optoelectronic Applications of Bio-Based Photosensitive Polyimides

Additive Manufacturing of Polymer‐Based Lubrication

Preparation and Characterization of the Polyimide-MoS₂/PTFE Composite with High Strength and Self-Adaptive Lubricating Performance in Air and Vacuum

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3D printing of PTFE-filled polyimide for programmable lubricating in the region where lubrication is needed

Cited by 17 publications

References 24 publications

Advancements in Synthesis Strategies and Optoelectronic Applications of Bio-Based Photosensitive Polyimides

Advancements in Synthesis Strategies and Optoelectronic Applications of Bio-Based Photosensitive Polyimides

Additive Manufacturing of Polymer‐Based Lubrication

Preparation and Characterization of the Polyimide-MoS2/PTFE Composite with High Strength and Self-Adaptive Lubricating Performance in Air and Vacuum

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Preparation and Characterization of the Polyimide-MoS₂/PTFE Composite with High Strength and Self-Adaptive Lubricating Performance in Air and Vacuum