Soft, Tough, and Thermally Conductive Elastomer Composites by Constructing a Curled Conformation

Wu, Weijian; Fan, Jianfeng; Pang, Yunsong; Zhong, Cheng; Sun, Rong; Zeng, Xiaoliang; Hao, Zhifeng

doi:10.1021/acs.chemmater.3c01041

Cited by 6 publications

(2 citation statements)

References 42 publications

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“…In our previous research work, the most intriguing and surprising finding was that the solvent n -hexane can unravel the entanglement in PDMS, resulting in a curled conformation. Our findings validate that the curled conformation enhanced polymer–filler compatibility, leading to improved mechanical properties in composite materials . This will pave the way for a new research strategy in developing durable anti-icing coatings.…”

Section: Introductionsupporting

confidence: 77%

“…However, our previous research on high filler-loaded elastomer composite materials revealed that the introduction of n -hexane as a solvent could untangle trapped entanglements, resulting in a curled configuration that effectively enhances elongation and reduces Young’s modulus. In a previous work, high filler-loaded curled PDMS/BN elastomer composite materials achieved outstanding mechanical performance with ultrahigh toughness . Similarly, in preparing spray coating slurries, n -hexane was used as a solvent, which not only acted as a diluent but also effectively improved the mechanical performance of the “eyelashes.″ Furthermore, the overlapping and intersecting distribution of the eyelash-like array can effectively share the load, while the intersecting arrangement can increase the support and compressive strength of the array.…”

Section: Resultsmentioning

confidence: 99%

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Robust and Superhydrophobic Polydimethylsiloxane/Ni@Ti₃C₂T_x Nanocomposite Coatings with Assembled Eyelash-Like Microstructure Array: A New Approach for Effective Passive Anti-Icing and Active Photothermal Deicing

Chen,

Hao

et al. 2024

ACS Appl. Mater. Interfaces

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To solve the problem of ice condensation and adhesion, it is urgent to develop new anti-icing and deicing technologies. This study presented the development of a highly efficient photothermal-enhanced superhydrophobic PDMS/Ni@Ti3C2T x composite film (m-NMPA) fabricated cost-effectively and straightforwardly. This film was fabricated utilizing PDMS as a hydrophobic agent, adhesive, and surface protector, while Ni@Ti3C2T x as a magnetic photothermal filler innovatively. Through a simple spraying method, the filler is guided by a strong magnetic field to self-assemble into an eyelash-like microstructure array. The unique structure not only imparts superhydrophobic properties to the surface but also constructs an efficient “light-capturing” architecture. Remarkably, the m-NMPA film demonstrates outstanding superhydrophobic passive anti-icing and efficient photothermal active deicing performance without the use of fluorinated chemicals. The micro-/nanostructure of the film forms a gas layer, significantly delaying the freezing time of water. Particularly under extreme cold conditions (−30 °C), the freezing time is extended by a factor of 7.3 compared to the bare substrate. Furthermore, under sunlight exposure, surface droplets do not freeze. The excellent photothermal performance is attributed to the firm anchoring of nickel particles on the MXene surface, facilitating effective “point-to-face” photothermal synergy. The eyelash-like microarray structure enhances light-capturing capability, resulting in a high light absorption rate of 98%. Furthermore, the microstructure aids in maintaining heat at the uppermost layer of the surface, maximizing the utilization of thermal energy for ice melting and frost thawing. Under solar irradiation, the m-NMPA film can rapidly melt approximately a 4 mm thick ice layer within 558 s and expel the melted water promptly, reducing the risk of secondary icing. Additionally, the ice adhesion force on the surface of the m-NMPA film is remarkably low, with an adhesion strength of approximately 4.7 kPa for a 1 × 1 cm2 ice column. After undergoing rigorous durability tests, including xenon lamp weathering test, pressure resistance test, repeated adhesive tape testing, xenon lamp irradiation, water drop impact testing, and repeated brushing with hydrochloric acid and particles, the film’s surface structure and superhydrophobic performance have remained exceptional. The photothermal superhydrophobic passive anti-icing and active deicing technology in this work rely on sustainable solar energy for efficient heat generation. It presents broad prospects for practical applications with advantages such as simple processing method, environmental friendliness, outstanding anti-icing effects, and exceptional durability.

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Section: Introductionsupporting

confidence: 77%

Section: Resultsmentioning

confidence: 99%

Robust and Superhydrophobic Polydimethylsiloxane/Ni@Ti₃C₂T_x Nanocomposite Coatings with Assembled Eyelash-Like Microstructure Array: A New Approach for Effective Passive Anti-Icing and Active Photothermal Deicing

Chen,

Hao

et al. 2024

ACS Appl. Mater. Interfaces

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Compliant composite elastomers via grafting short dangling chains for promoting thermal transport performance

Li,

Pang,

Wang

et al. 2024

Polymer Composites

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The multifunctional composite elastomers serve as thermal interface materials for heat dissipation in electronic devices when their thermal transport performance is enhanced. The common method for enhancement, continuously raising the thermal conductive filler loading only can improve thermal conductivity of composite elastomers but reduces compliance, resulting in elevated contact thermal resistance with solid surfaces, compromising thermal transport. To address this, we propose grafting short dangling chains onto the composite elastomer matrix to further promote compliance under a certain filler loading. Characterization results demonstrate that the grafted chains effectively reduce relaxation time, enabling faster deformation for the material under pressure. This approach enhances interfacial compatibility, widening the thermal transport path at contact interfaces to contact thermal resistance by 94% (from 17.8 to 1.07 mm2W/K), significantly improving overall thermal transport. Additionally, we discussed the feasibility of employing composite elastomers as thermal interface materials for efficient chip heat dissipation.Highlight The grafted dangling chains can promote the composite elastomers softness. The softness promotion can help reduce thermal contact resistance. A series of theories are employed to learn the mechanisms of the promotion. The resulting composite elastomers can be used as thermal interface materials.

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Elastomers with ultrahigh mechanical properties for flexible sensing and triboelectric nanogenerators

Zhang,

Cao,

Wang

et al. 2024

Chemical Engineering Journal

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Soft, Tough, and Thermally Conductive Elastomer Composites by Constructing a Curled Conformation

Cited by 6 publications

References 42 publications

Robust and Superhydrophobic Polydimethylsiloxane/Ni@Ti₃C₂T_x Nanocomposite Coatings with Assembled Eyelash-Like Microstructure Array: A New Approach for Effective Passive Anti-Icing and Active Photothermal Deicing

Robust and Superhydrophobic Polydimethylsiloxane/Ni@Ti₃C₂T_x Nanocomposite Coatings with Assembled Eyelash-Like Microstructure Array: A New Approach for Effective Passive Anti-Icing and Active Photothermal Deicing

Compliant composite elastomers via grafting short dangling chains for promoting thermal transport performance

Elastomers with ultrahigh mechanical properties for flexible sensing and triboelectric nanogenerators

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Soft, Tough, and Thermally Conductive Elastomer Composites by Constructing a Curled Conformation

Cited by 6 publications

References 42 publications

Robust and Superhydrophobic Polydimethylsiloxane/Ni@Ti3C2Tx Nanocomposite Coatings with Assembled Eyelash-Like Microstructure Array: A New Approach for Effective Passive Anti-Icing and Active Photothermal Deicing

Robust and Superhydrophobic Polydimethylsiloxane/Ni@Ti3C2Tx Nanocomposite Coatings with Assembled Eyelash-Like Microstructure Array: A New Approach for Effective Passive Anti-Icing and Active Photothermal Deicing

Compliant composite elastomers via grafting short dangling chains for promoting thermal transport performance

Elastomers with ultrahigh mechanical properties for flexible sensing and triboelectric nanogenerators

Contact Info

Product

Resources

About

Robust and Superhydrophobic Polydimethylsiloxane/Ni@Ti₃C₂T_x Nanocomposite Coatings with Assembled Eyelash-Like Microstructure Array: A New Approach for Effective Passive Anti-Icing and Active Photothermal Deicing

Robust and Superhydrophobic Polydimethylsiloxane/Ni@Ti₃C₂T_x Nanocomposite Coatings with Assembled Eyelash-Like Microstructure Array: A New Approach for Effective Passive Anti-Icing and Active Photothermal Deicing