Journal of the Australian Ceramic Society
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2022
·Vol. 58
·期 5
·1509-1517
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IF 1.741
Hu Die
Polymers can be prepared into textiles via electrospinning. However, high overall property of outdoor clothing is necessary. In this work, hybridization and electrospinning were employed to fabricate fluoropolymer@bentonite hybrid textiles. Compared with fluoropolymer textile, hybrid textiles exhibit a surface superhydrophobicity ascribed to the significantly improved surface roughness of hybrid fibers, and they display high thermal stability attributed to inorganic bentonite. After acid/alkali immersion, ultraviolet radiation, or mechanical abrasion, hybrid textiles still show high water resistance, indicating strong weathering resistance. Rational material selection and electrospinning result in low surface energy, high surface roughness, and binary micro/nano hierarchical structure. Hybrid textile (with 10 wt% bentonite) shows high overall property (water contact angle of ~ 155°; thermal stability up to ~ 400 ℃; superhydrophobicity after 48 h exposing to acid, alkali, or radiation; hydrophobicity after 100 abrasion cycles). This work might pave a road for large-scale preparation of high-performance textiles for waterproof garments.
研究领域:
材料科学
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纺织工程
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产品关联
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2023
·
IF 7.4
Ren-Yi Sun,Fang Wang,Chun-Bo Li,Ze-Peng Deng,Fei Song,Yu-Zhong Wang
Developing flame-retardant wood with integrated anti-wetting property, self-cleaning and good weatherability, has received intensive attention, which is vital to the rapid advancements in construction and building materials. Here, a superhydrophobic and flame-retardant coating is constructed based on a trinity monocomponent intumescent flame retardant , polydimethylsiloxane resin and modified SiO 2 nanoparticles. Such a coating can endow wood materials with high flame retardancy and self-cleaning performances. In comparison to pristine woods, the surface-treated wood shows a self-extinguish behavior in the vertical burning test with an obviously increased limiting oxygen index of 31.0% and UL 94 rating of V0. The peak heat release rate is reduced by 24.4% and the total heat release after surface treatment is decreased to 24.5 MJ/m 2 . The water-repellency of sample is greatly improved with water contact angle over 154° and slide angle below 5°, exhibiting appreciable resistance to dust contamination. Due to the significant anti-wetting property, the coating can effectively protect the inner flame-retardant layer from water penetration, thereby the treated wood can preserve high flame-retardant performances even after being immersed in water for 24 h. More importantly, the modified wood material can endure different harsh environmental conditions, including high temperatures, UV light irradiation, hydrothermal environment and mechanical impact, without losing the superhydrophobicity or flame retardancy, presenting high weatherability and mechanical robustness. The findings provide an effective approach to prepare high-weatherability fire-safety wood materials that have application potential in outdoor environments.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
Journal of the Australian Ceramic Society
·
2023
·Vol. 59
·期 4
·915-922
·
IF 1.9
Zhang Jianxiong
ZrO 2 is widely used. However, surface hydrophilicity is harmful to waterproof devices. In this work, epoxy-based polyhedral oligomeric silsesquioxane (POSS) was chemically bonded to ZrO 2 sheet surface for weather-resistant hydrophobicity and anti-adherence property. First, ZrO 2 sheet was modified with hydroxyls, followed by amino modification. Then, surface POSS modification was performed via ring-opening addition. Next, composition and micro-morphology of POSS-treated sheet were clarified. Ultimately, the dependence of water contact angle of POSS-modified sheet on POSS solution treating time was researched, and the highest contact angle of 132.6° was gained by 24-h treating. Acid corrosion, alkali corrosion, and ultraviolet radiation for 48 h were employed to verify good weather resistance with contact angles over 120°. POSS-modified sheet had good anti-adherence capacity. Cooperation of POSS and ZrO 2 was utilized to obtain low surface energy and high surface roughness. This work might help to obtain hydrophobic ceramics as catalyst supports for oil-phase reactions.
研究领域:
材料科学
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表面化学
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DOI
高影响因子
Journal of Materials Research and Technology-JMR&T
·
2022
·
IF 6.267
Xuefeng Zhang,Huanbo Wang,Zhijun Chen,Shiyu Guo,Yuan Fu,Tian Liu
Fast-growing natural poplar wood is not meet with in many requirements such as high strength and flame retardant due to its porous structure and loose materials. In this study, we established a simple and feasible method that includes delignification, ionic bond formation via the crosslinking of carboxyl groups in TEMPO-oxidized wood after delignification with calcium ions , and hot-pressing of stacked veneers to improve the quality, density, strength, toughness, and weather resistance of natural wood (NW). This method has the following advantages: The inner cellulose microfiber is highly aligned, thus closely cross-linking and tightly bonding cellulose microfibers and nanofibers between the interfaces and inner layers of the wood boards via hydrogen bonding and ionic bonding. A laminated densified TEMPO-oxidized ionic wood (IW) showed substantially higher specific strength (∼196.9 MPa cm3 g−1), higher tensile strength (∼246 MPa), higher flexural strength (∼257 MPa), higher flexural modulus (∼36 GPa), higher impact toughness (∼42.34 kJ m−2), and superior fire retardancy, UV resistance, water resistance, and also higher density (∼1.25 g cm−3) than NW. Larger-size laminated densified structural materials with satisfactory thermal stability can also be fabricated using the proposed method.
研究领域:
材料科学
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林业工程
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DOI
高影响因子
POLYMER BULLETIN
·
2023
·
IF 3.2
Xiong Ao,Li Junqian
Fabrication of waterproof decorative paintings has attracted a great deal of interest. In this work, in situ reaction using poly(glycidyl methacrylate) (PGMA) and polyhedral oligomeric silsesquioxane with amino group at end (amino-POSS) was utilized to fabricate coatings at surfaces of papery/cloth decorative paintings via spray, which endowed the decorative paintings with excellent hydrophobicity, transparency, and weather ability. Firstly, ring opening of epoxy groups in PGMA, cross-linking structure in coatings, and strong coating/painting interface adhesion were achieved. Then, surface morphology of coatings was observed, and high surface roughness was confirmed. Next, high transparency and thermal stability of coatings were confirmed. Finally, surface water-contact-angles (WCAs) of coatings with various substrates were tested as a function of POSS content. Weathering resistances of coating surface on cloth substrate were studied. Coatings exhibit excellent properties such as high light transmittance (over 80%), high glass-transition temperature (upper limit ~ 113 ℃), high hydrophobicity (maximum WCA ~ 149°), and strong weathering resistances (the aged WCAs over 140°). Work innovation lies in simultaneously gained high hydrophobicity, good transparency, and strong weather ability. This work might pave a road for fabricating excellent coatings for protecting decorative paintings.
研究领域:
材料科学
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文物保护
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2024
·
IF 4.2
Wanjiang Jin,Xinyu Tan,Qihao Dai,Tao Li,Lihua Jiang,Ting Xiao,Weifeng Chen
Transparent self-cleaning coatings have garnered significant attention for their promising prospects in outdoor applications, particularly in solar panels and high-end optical devices. However, existing technologies still grapple with the challenges of achieving high transmittance and superior weather resistance. Therefore, developing cost-effective coatings that possess both high transparency and excellent durability is paramount. A novel method for synthesizing an anti-reflective (AR) coating is presented in this paper, offering simplicity, cost-efficiency, and high performance. By merging acid-base catalyzed sol-gel chemistry with the dip-coating process, the coating's transparency, durability, and hydrophobicity are notably improved. Production time is significantly reduced through process optimization. The AR coating achieves an exceptional transmittance of 97.3 % at 620 nm, a 6.7 % increase over that of untreated glass. Furthermore, its 145° water contact angle demonstrates excellent hydrophobicity and self-cleaning properties. Mechanical stability tests indicate that the coating retains over 96 % transmittance even after 30 tape adhesion cycles. Long-term UV exposure tests reveal that the coating's transmittance and contact angle remain almost unchanged, underscoring its superior environmental stability and weather resistance. Additionally, the coating enhances the transmittance of multi-crystalline silicon (mc-Si) solar cells compared to commercial glass, boosting the photovoltaic conversion efficiency from 11.04 % to 11.81 %, an increase of 7 %. With these exceptional properties, this coating holds significant potential for applications in mc-Si solar cells and high-end optical devices, providing the industry with an efficient and economical solution.
研究领域:
材料科学
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可再生能源
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光学工程
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产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2025
·
IF 3.7
Jing Guo,Bingkang Niu,Meng Chai,Ruirui Li,Zhengyi Chao,Junfang Liu,Chao Zhang,Weizhou Jiao,Guisheng Qi,Youzhi Liu
Normally, a transparent inert film is coated on the surface of TiO 2 particles to enhance the weatherability of the pigment. Liquid-phase coating process is mainly used in industry, which difficult to get really uniform films. This work combining nanoparticle fluidization technology with atomic layer deposition (ALD) technology to achieve precise surface modification of a large number of micro-nano particles. First, we explored the fluidization characteristics of TiO 2 nanoparticles in a home-made atmospheric fluidized bed ALD reactor (FB-ALD) to ensure the uniform fluidization of a large number of nanoparticles. Then TiCl 4 and H 2 O were used as precursors to deposit amorphous TiO 2 films on the surface of TiO 2 nanoparticles at 80 °C under atmospheric pressure, and the growth per cycle was about 1.09 Å per cycle. After 30 ALD cycles, the film thickness was about 3.1 nm, which could almost fully suppress the photocatalytic activity of TiO 2 . Compared with other traditional coating materials, amorphous TiO 2 has higher light refractive index, and realizes the suppression of the photocatalytic activity of TiO 2 without introducing other substances, demonstrating greater application potential in TiO 2 pigment coating field. The process is a gas-phase coating method, which is efficient, no waste water, and easy to scale up. This work shown the excellent property of interface engineering in improving pigment weatherability and can also provide guidance for the nanoparticle surface modification.
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
高影响因子
EcoMat
·
2024
·Vol. 7
·期 1
·e12509
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IF 10.7
Maiping Yang,Zikang Zhou,Mingxiang Liu,Jiawei Wu,Jiaxin Li,Jun Liang,Shiliang Zhang,Mingyue Chen,Hongtao Zeng,Xiaofeng Li,Hao Han,Chong Hou,Guangming Tao
The temperature of metal-based facilities rises significantly under high outdoor solar irradiation, leading to serious safety accidents. The application of active cooling technology poses challenges due to its high energy consumption, especially in complex outdoor environments. Passive cooling devices with high solar reflection and thermal emission can continuously cool objects under sunlight. However, the white or silvery passive cooling devices do not meet the need for aesthetics and specific demands. Here, we present a hierarchical metapaint for outdoor facilities that simultaneously achieve vibrant color and passive cooling ability. The top layer selectively absorbs visible wavelengths to display desired colors, while the underlayer boosts the reflection of near-to-short wavelength infrared (NSWIR) light to prevent solar heating. The metapaint-coated metal is resistant to high and low temperatures, acidic and alkaline environments, and simulated seawater. It also has satisfactory anti-fouling properties. When compared to metal coated without commercial paint, the hierarchical passive cooling paint (metapaint) coated metal can cool up to 9.7°C and 17.1°C. The metapaint has excellent passive cooling performance, attributed to its broad-spectrum selective regulation function. Our work offers a simple, inexpensive, and scalable approach to reduce cooling energy usage and promote a low-carbon lifestyle.
研究领域:
材料科学
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能源工程
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2024
·
IF 5.8
Xuefeng Bai,Han Zhang,Yu Tu,Hao Ding,Sijia Sun
In this paper, a CaCO 3 /TiO 2 @SiO 2 composite pigment (CTS) was prepared by a carbonation reaction using a one-pot method. CTS can reduce the amount of rutile TiO 2 needed and improve the weatherability compared with TiO 2 and CaCO 3 /TiO 2 (CT). The performance test results showed that the composite pigment with 60% TiO 2 has a coating film contrast ratio of 91.05% of pure TiO 2 , and the oil absorption and whiteness values were also close to those of pure TiO 2 , indicating that the CTS has good pigment properties. The XPS and infrared results showed that the bonding of CaCO 3 , TiO 2 , and SiO 2 occurred at the interface. The tight bonding of the three substances was realized through a dehydroxylation reaction on the surface. In addition, the SiO 2 layer weaken the photocurrent response of TiO 2 in the CTS and reduced the UV absorption of the composite pigment, which slowed the degradation rate of rhodamine B in the composite pigment coatings; thus, the CTS exhibits excellent weatherability performance in coating applications.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
POLYMER COMPOSITES
·
2024
·
IF 4.8
YingBo Wang,YiHong Liu,ChangBao Zhao,ZhaoYang Xu,GeGe Gu,QingShi Meng
The demanding and rigorous modern work environments present significant challenges to the protective capabilities of engineering materials. Polyurea elastomers often face limitations in terms of inadequate strength and a lack of weather resistance, however, polyurea composites holds great promise in addressing these issues. This study prepared modified ultrafine aramid short fibers using a mechanochemical method. Subsequently, in-situ polymerization was utilized to combine the modified ultrafine aramid short fibers ( M -AF) with polyurea, resulting in the synthesis of a composite material characterized by recyclability, robust weather resistance, and favorable mechanical properties. Subsequently, intensive researches were conducted on the mechanical properties, recyclability, self-healing performance, weather resistance, and chemical medium resistance of the composites. The composite at 0.1 wt% of M -AF exhibited improvements in tensile strength (27.2 ± 0.8 MPa) as well as obviously enhanced impact performance (428.8 ± 6 kJ/m 2 ), and recovered most of its mechanical properties after recycling and self-healing. Moreover, the composite exhibits excellent weather resistance and chemical resistance, enabling it to uphold its exceptional protective performance even in the face of challenging environments. Highlights Ultrafine aramid fibers were prepared using a simple mechanochemical method. Mechanochemical methods were employed to surface modify aramid fibers. The composites have good strength, recyclability, weather resistance.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Xinglei Cui,Zhonglian Li,Yizhuo Wang,Long Li,Zhi Fang
The weather resistance capability of insulating materials, i.e. surface performance including hydrophobicity, mechanical and electrical strength under diverse weather conditions, is considered of critical importance for high-voltage devices working outdoors. In this study, atmospheric pressure plasma jet with Ar/Hexamethyldisiloxane (HMDSO) assisted by γ-Aminopropyltriethoxysilane (APTES) and oxygen (O 2 ) addition is employed to deposit a robust insulating film with good weather resistance capability on the surface of Polymethylmethacrylate (PMMA). The gas flow rates of Si-containing precursors (HMDSO/APTES) and auxiliary gas (O 2 ) are varied to elucidate the correlation between precursor ratio and film performances. The mechanism for robust film deposition is explored by investigating reactions of active particles deduced from discharge characteristics, surface physical morphology and chemical composition variations. The results indicate that APTES plays a pivotal role in the enhancement of the film mechanical strength, while O 2 can further improve both mechanical and electrical performances. A robust superhydrophobic film is deposited, inhibiting the reduction in water contact angle by 81.6 % after the tape peel test compared with the film deposited by Ar/HMDSO system, and the flashover voltage is increased by 38.2 % with the optimal HMDSO/APTES/O 2 ratio of 7:5:1. The simultaneous improvements of the film hydrophobic, mechanical and electrical performances are contributed by crosslinking of silicone deposits and the introduction of -NH₂ groups. The weather resistance capability of the insulating material is effectively enhanced, providing guidance for outdoor insulation applications.
研究领域:
材料科学
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电气工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Lin Chen,Heng Zhang,Shilei Zhu,Zhuangzhuang Li,Wenwen Yu,Fengbo Zhu,Ya Nan Ye,Qiang Zheng
Ultra-transparent polyacrylic (PA) coatings are widely used in cultural heritage conservation but often face issues like whitening from phase separation due to poor water resistance and weatherability. This leads to frequent need for replacement, complicating the preservation of cultural artifacts. In this study, we propose a core/shell polyacrylic emulsion coating (PA-DFMA) with enhanced water resistance and weatherability by confining fluorinated polymers within the shell section. The core/shell structure of PA-DFMA is designed to prevent phase-separation-induced whitening and improve transparency, thanks to the strategic confinement of fluorinated polymers which also mitigates fluorine aggregation and enhances film formation at low temperatures. On the other hand, the introduction of fluorine refines the phase domains during the aging process, further ensuring the transparency of coating and greatly prolonging its durability. Chemically, the strong C-F bonds in the coating offer excellent UV aging resistance, and the lack of a chemical bonding network structure allows for the easy and safe removal of the coating, facilitating reversible treatment of artifacts. The performance test showed that PA-DFMA coatings outperform traditional cultural heritage protection products such as Golden and Rustins in transparency, weatherability, hardness, and reversibility. This eco-friendly coating is proven to offer substantial potential for the preservation of cultural heritage and maintenance of archaeological objects, providing new insights into the design of materials for this purpose.
研究领域:
材料科学
·
文物保护
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）