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‘MXene Composite Materials For Anti-icing In Simulated Outdoor Environment – Nature.com’

Nature.com Oct 19, 2024

To improve anti-icing traits of outdoor coatings a synergy between photothermal and hydrophobic anti-icings was utilized to fabricate copolymerTi3C2Tx MXene composite coatings with good transparency and adhesion. MXene contributes to photothermal trait from local surface plasmon resonance effect. Copolymer enables hydrophobicity from perfluoroalkyls-induced low surface energy and high surface roughness. An increase in MXene dose results in an increased surface roughness. With 140.0820117782012.2176 of water contact angle and 70 of light transmittance the optimal film bears 2 wt of MXene. High MXene dose results in large temperature-increase of film under sunlight. After 15ampnbspmin of sunlight exposure the temperature of optimal film surface in icing simulation increases from 8722820118 8451 to 7.2 8451. After 48ampnbsph of acid immersion the temperature-increase of optimal film surface based on 300ampnbsps of sunlight irradiation reaches 28.7820117782011.2 8451. After 48ampnbsph of ultraviolet irradiation the temperature-increase of optimal film surface is 30.7820117782010.8 8451. This surface has a water contact angle of 132.7820117782011.1176 after 48ampnbsph of acid immersion. This study gives impetus to a preparation of various composite coatings for outdoor anti-icingdeicing.

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‘Effect Of Heat Treatment Time On The PTC Behavior Of Wollastonite/CB/CPE Composites – Nature.com’

Nature.com Sep 19, 2024

Wollastonite Wcarbon black CBchlorinated polyethylene CPE conductive composites were prepared via melt compounding using CB and wollastonite as fillers and CPE as the matrix. To analyze the internal structure of the material and examine how changes in crystallinity affect the positive temperature coefficient PTC behavior of the composites several characterization techniques were employed. These methods included scanning electron microscopy X-ray diffraction and differential scanning calorimetry. Each method provided insights into the structural adjustments and their implications for the electrical properties of the material. Special attention was given to the influence of the wollastonite content on the electrical conductivity of the composites. The results demonstrated that the lowest room-temperature resistivity 1.66 937183cm was achieved with 15 wt. wollastonite doping after 18201h of heat treatment. At the same time the PTC strength increased to 4.7. Wollastonite Wcarbon black CBchlorinated polyethylene CPE conductive composites were prepared via melt compounding using CB and wollastonite as fillers and CPE as the matrix. The results indicated that the room temperature resistivity of CPECBwollastonite composites decreased to 1.66937183cm after 18201hour of heat treatment and the PTC strength reached 4.7. Subsequently the relationship between the internal structure of the materials changes in crystallinity and PTC properties was analyzed using X-ray diffractometry and DSC differential scanning calorimetry.

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