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A Thermoregulatory Flexible Phase Change nonwoven for All‑Season High‑Efficiency Wearable Thermal Management

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Nano-Micro Letters 2023年第2期15卷 259-270页

作者： Hanqing Liu Feng Zhou Xiaoyu Shi Keyan Sun Yan Kou Pratteek Das Yangeng Li Xinyu Zhang Srikanth Mateti Ying Chen Zhong‑Shuai Wu Quan Shi Liaoning Province Key Laboratory of Thermochemistry for Energy and Materials Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of Sciences457 Zhongshan RoadDalian 116023People’s Republic of China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of Sciences457 Zhongshan RoadDalian 116023People’s Republic of China Institute for Frontier Materials Deakin UniversityWaurn PondsVIC 3216Australia University of Chinese Academy of Sciences 19 A Yuquan RoadShijingshan DistrictBeijing 100049People’s Republic of China

Phase change materials have a key role for wearable thermal management,but suffer from poor water vapor permeability,low enthalpy value and weak shape stability caused by liquid phase leakage and intrinsic rigidity of solid–liquid phase change ***,we report for the first time a versatile strategy for designed assembly of high-enthalpy flexible phase change nonwovens(GB-PCN)by wet-spinning hybrid grapheneboron nitride(GB)fiber and subsequent impregnating paraffins(e.g.,eicosane,octadecane).As a result,our GB-PCN exhibited an unprecedented enthalpy value of 206.0 J g^(−1),excellent thermal reliability and anti-leakage capacity,superb thermal cycling ability of 97.6%after 1000 cycles,and ultrahigh water vapor permeability(close to the cotton),outperforming the reported PCM films and fibers to ***,the wearable thermal management systems based on GB-PCN for both clothing and face mask were demonstrated,which can maintain the human body at a comfortable temperature range for a significantly long ***,our results demonstrate huge potential of GB-PCN for human-wearable passive thermal management in real scenarios.

关键词： Phase change materials Graphene Boron nitride nonwoven Wearable thermal management

Improving the Compatibility of Biodegradable Poly (Lactic Acid) Toughening with Thermoplastic Polyurethane (TPU) and Compatibilized Meltblown nonwoven

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Open Journal of Composite Materials 2022年第1期12卷 1-15页

作者： Md Obaidur Rahman Feichao Zhu Bin Yu College of Textile Science and Engineering Zhejiang Provincial Key Laboratory of Industrial Textile Materials and Manufacturing Technology Zhejiang Sci-Tech University Hangzhou China

Poly (Lactic Acid) (PLA) is a biodegradable polymer which originates from natural resources such as corn and starch, offering excellent strength, biodegradability, nevertheless its inherent brittleness and low impact resistance properties have limited its application. On the other hand, Thermoplastic Polyurethane (TPU) has high toughness, durability and flexibility, which is one of the most potential alternatives for enhancing the flexibility and mechanical strength of Poly (Lactic Acid) (PLA) by blending it with a compatibilizer. With the aim to improve the mechanical and thermal properties of

Diatomite Precoated nonwoven Membrane Bioreactor for Domestic Wastewater Reclamation

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Journal of Donghua University(English Edition) 2015年第1期32卷 109-112页

作者：何月玲饶品华张文启金鹏 College of Chemistry and Chemical Engineering Shanghai University of Engineering Science China Northeast Architectural Design and Research Institute Co. Ltd.

nonwoven was selected as filtration materials in submerged membrane bioreactor( MBR) for domestic wastewater reclamation. For its hydrophobic membrane surface,diatomite was precoated on nonwoven to improve membrane hydrophilicity. In the precoating stage,diatomite dynamic membrane could be formed on10 μm polyethylene nonwoven surface efficiently and effluent turbidity could be below 5 nephelometric turbidity units( NTU).The MBR system was operated steadily under gravity flow and scanning electron microscope( SEM) analysis showed that nonwoven membrane was only partially fouled at the membrane flux of 5 L/( m2·h). Average removal efficiencies of chemical oxygen demand( COD) and NH +4-N were above 86 % and 50 %,respectively. The effluent turbidity and chromaticity were below 5 NTU and 25°,respectively. Those results could meet the requirements for wastewater reuse.

关键词： diatomite nonwoven membrane bioreactor(MBR) wastewater reclamation

Effect of Blending Ratio of Fibers on the Properties of nonwoven Fabrics Based of Alfa Fibers

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Advances in Materials Physics and Chemistry 2014年第6期4卷 116-125页

作者： Lassaad Ghali Mohamed Taher Halimi Mohamed Ben Hassen Faouzi Sakli Textile Engineering Laboratory Monastir University Monastir Tunisia

Natural fibers are nowadays increasingly employed for making nonwoven, replacing the synthetic materials due to economic and environmental considerations. In this setting, we examine the use of Alfa fibers in nonwoven. Extracted Alfa fibers present satisfying mechanical properties that allow them to be used to produce nonwoven textiles materials. Therefore, Alfa fibers are, mainly, blended with cotton, polyester, Tencel and wool. Webs are prepared using cotton or wool cards in regular width. The nonwoven consolidation is made by needle-punching method. The weight, thickness, air permeability, adiathermic capacity and tensile properties are investigated. The results exhibit that the air permeability increases with the increase of Alfa fibers ratio for the nonwoven Alfa blended with short fibers. It decreases in case of Alfa/Wool blend. We can conclude also that the nonwoven Alfa blended with wool fibers have the highest properties values for all the Alfa fibers blends. Data also revealed that the tensile properties are reduced with the increment of Alfa fibers ratio.

关键词： Alfa Fibers nonwoven Air Permeability Specific Strength

INFLUENCE OF PROCESSING PARAMETERS AND POWDER BINDER CONTENT ON PROPERTIES OF HIGH LOFT nonwoven FABRICS

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Journal of China Textile University(English Edition) 1995年第2期12卷 1-7页

作者：储才元

In this paper, the influence of processing parameters and powder binder content was studied and analysed on the properties of high loft nonwoven fabrics mainly using statistical analysis method. The relationship between the bulkiness and the warmth retention property was also tested. The analytical results reveal that the increase of the powder content, heating temperature and pressure will affect the tensile strength of nonwovens. Moreover, there are interactions between these parameters. The compression properties only change a little for a powder binder content of 15％—20％. However, with the increase of the heating temperature and pressure, the bulkiness and compression rate will reduce significantly. For the bulk density of high loft nonwoven fabrics, there exists a heat transter mechanism of air convection, but the higher the bulkiness of nonwovens, the larger the thickness and the better the warmth retention property of nonwoven fabrics.

关键词： nonwoven fabrics powder method tensile properties compression test heat transfer coefficient statistical methods bulkiness warmth retention property.

MELT-BLOWN nonwoven FOR AIR FILTRATION

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Journal of China Textile University(English Edition) 1993年第2期10卷 14-19页

作者：柯勤飞 Department of Textile Technology

The technical parameters and the structural factors of melt-blown nonwovens used as filteringmedium are analysed,the orientation of particles filtered in a filter is described,and the optimalparameters for air filtration are *** results are shown as follows:the ratio of tenacity oflongitudinal to cross direction has a close agreement with the random coefficient of fiber arrange-ment in practice;large particles are most likely trapped on the surface of a filter,and smaller parti-cles are filtered throughout the depth of a filter,and the deeper,the smaller;moreover,higher fil-tering efficiency and lower pressure drop can be effected through the optimization of parameters.

关键词： optimization trap melt-blown nonwoven microfiber filtering mechanism quadratic regressional equation

Combination of nonwoven Filters and Mesenchymal Stem Cells Reduced Glomerulosclerotic Lesions in Rat Chronic Kidney Disease Models

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International Journal of Clinical Medicine 2019年第3期10卷 135-149页

作者： Hideo Hori Masanori Shinzato Yoshiyuki Hiki Shigeru Nakai Gen Niimi Shizuko Nagao Nobuya Kitaguchi Faculty of Clinical Engineering School of Health Sciences Fujita Health University Toyoake Japan Faculty of Medical Management & Information Science School of Health Sciences Fujita Health University Toyoake Japan Joint Research Laboratory Center for Research Promotion and Support Fujita Health University Toyoake Japan Education and Research Facility of Animal Models for Human Diseases Center for Research Promotion and Support Fujita Health University Toyoake Japan

Background and Objectives: The increasing incidence of patients requiring hemodialysis has become a medical and economic problem globally;it is necessary to maintain renal glomerulus functionality to prevent the progression of chronic kidney disease. As a therapeutic tool for preventing the progression of chronic kidney disease, mesenchymal stem cells (MSCs) are a promising source of both growth factors and cells for regeneration. However, the escape of MSCs from injection sites, as well as the insufficient production of growth factors, is issues that remain unresolved. In the present study, a complex of cells and a nonwoven filter was localized in an injured kidney to provide growth factors such as vascular endothelial growth factor (VEGF) and hepatocyte growth factor (HGF). Methods and Results: nonwoven biodegradable polylactic acid (PLA) filters were used to capture rat bone marrow stem cells (r-BMSCs). The capture rates of r-BMSCs on five PLA filter disks were over 85%. The production of HGF by r-BMSCs on PLA filters was markedly enhanced through interactions between the cells and the nonwoven filter. Conversely, the production of VEGF by r-BMSC on PLA filters was unchanged. Complexes of nonwoven filters and cells were implanted onto the surfaces of kidneys of 5/6-nephrectomized rats, which are characterized by progressive glomerulosclerosis. Within the r-BMSC/PLA complexes, deleterious changes in serum creatinine levels were not attenuated. However, PLA filters with r-BMSCs, which enhanced HGF production over 4 weeks of culture, significantly (P = 0.03) decreased urinary protein levels at 4 weeks after implantation compared to untreated nephrectomized rats. Further histopathological studies revealed that glomerulosclerotic lesions were significantly (P = 0.008) reduced by treatment with the r-BMSC/PLA complex. Conclusion: Devices made of PLA nonwoven filters and stem cells are potentially useful for the prevention and treatment of chronic kidney disease.

关键词： nonwoven Filter Mesenchymal Stem Cell Hepatocyte Growth Factor Regenerative Medicine Chronic Kidney Disease

A STUDY OF HIGH LOFT nonwoven FABRICS USING POWDER BONDING TECHNOLOGY

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Journal of China Textile University(English Edition) 1994年第1期11卷 1-7页

作者：储才元严灏景

In this paper, two types of high loft nonwoven fabrics have been constructed in the laboratory apparatus made by ourselves with different binders (polyamide and polyethylene powder) and varying binder contents (10%, 20%, 30% and 40%). The tensile and compression properties of these nonwoven fabrics were tested. It was found that one can reduce powder binder content to increase loft and softness of nonwoven fabrics, but it has to sacrifice its tensile strength. Adhesion force between binder and single fibre was also explored. The experiments showed that the adhesion force at the interface between binder and fibre depends on the fibre variety, the fibre surface morphology, heating temperature and heating time etc..

关键词： adhesion force, powder method, nonwoven fabrics, infrared radiation, tensile properties, compression properties binder content, bulkincss, powder bonding technology.

Study on the Leukocyte Filtration Model of nonwoven Media

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Journal of China Textile University(English Edition) 2000年第2期17卷 7-11页

作者：柯勤飞

The filtration coefficient before filtration (λ-0)is intro-duced and a mathematical model for the leukocyte filtra-tion process, which relates to the filtration efficieney,capacity and leukoeyte concentration, filter thickness and fliter surface area, is established according to the mass balance for particles in a filter and the particle concen-tration decrease per unit of filter depth. The model can be uded to calculate the filtration efficiency or *** is found that the filtration performance observed dur-ing the experiments could be explained well by the *** established model can be applied to the design and optimization of ungrafted and grafted melt blown nonwoven filtration materials.

关键词： leukocyte nonwoven media filtration coefficient model filtration efficiency filtration capacity .