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  1. Article ; Online: Colored Basalt Fibers Preparation via One-Step Drawing Lubricated by a Composite Sizing Consisted with Rhodamine B

    Jingyao Li / Chuanxiao Zuo / Jiwen Si / Weikun Ning / Peiping Zhang / Wenqing Li / Qian Gao / Cundi Wei / Shiding Miao

    Journal of Natural Fibers, Vol 20, Iss

    2023  Volume 1

    Abstract: The continuous basalt fibers (BFs) dyed with cationic dyes (RhB) were prepared through one-step drawing strategy using miscible liquids of phosphorylating starch (PS) cross-linked polyvinyl alcohol (PVA) and sodium silicate (SS) as infiltration agents. ... ...

    Abstract The continuous basalt fibers (BFs) dyed with cationic dyes (RhB) were prepared through one-step drawing strategy using miscible liquids of phosphorylating starch (PS) cross-linked polyvinyl alcohol (PVA) and sodium silicate (SS) as infiltration agents. The new method of dyeing was relied on the residual temperature of melt drawing, and the dye molecules were lubricated onto fibers firmly. Different means were used to characterize the color fibers, and a compact layer was formed on the fiber surface. The prepared composite fibers (PVA-SS-PS-RhB/BF) exhibited stable color fastness (washing and rubbing fastness achieved to 4–5 grade). The crosslinking significantly improved the water resistance with dissolved residue up to 80%, and the heightened glass transition temperature was observed. The breaking force of dyed fibers was observed to be 50.3% higher than that of raw fibers, and the breaking elongation was 71.8% higher than the original fibers.
    Keywords colored basalt fibers ; one-step drawing lubrication ; in-situ dyeing ; tensile strength enhancement ; cationic dyes ; state-of-art ; Science ; Q ; Textile bleaching ; dyeing ; printing ; etc ; TP890-933
    Subject code 660
    Language English
    Publishing date 2023-04-01T00:00:00Z
    Publisher Taylor & Francis Group
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article: Utilization of pelagic clay to prepare porous silicon as negative electrode for lithium-ion batteries

    Peiping, Zhang / Chenxu, Zhao / Weikun, Ning / Shiding, Miao / Nan, Li / Qian, Gao / Xuefa, Shi

    Colloids and surfaces. 2022 June 05, v. 642

    2022  

    Abstract: In order to rationally develop abundant marine clay resources, in view of its large specific surface area, looseness, high porosity, poor crystallinity, and high activity, the magnesium thermal reduction method was used to reduce Si⁴⁺ in the pelagic clay ...

    Abstract In order to rationally develop abundant marine clay resources, in view of its large specific surface area, looseness, high porosity, poor crystallinity, and high activity, the magnesium thermal reduction method was used to reduce Si⁴⁺ in the pelagic clay minerals to obtain porous silicon. Through targeted process design and reaction condition control, the obtained silicon material not only has higher crystallinity, but also has layered accumulation pores with relatively uniform pore size distribution. It had a BET specific surface area of 81.473 m²·g⁻¹, a pore volume of 0.290 cm³·g⁻¹, and an average pore size of 10.193 nm. In addition, using sucrose as the carbon source, the prepared silicon was modified to obtain a carbon-coated porous silicon material, whose performance as lithium-ion battery negative electrode was preliminarily characterized. The specific capacity, cycling performance and multiplicity performance test results showed that the porous silicon derived from pelagic clay exhibits good cycling and rate performance under the carbon coating conditions, which means that it had a certain potential in the field of lithium-ion batteries. This work opened up a new way for high value-added utilization of pelagic clay.
    Keywords carbon ; clay ; crystal structure ; electrodes ; lithium batteries ; magnesium ; porosity ; process design ; silicon ; sucrose ; surface area ; value added
    Language English
    Dates of publication 2022-0605
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 1500517-3
    ISSN 0927-7757
    ISSN 0927-7757
    DOI 10.1016/j.colsurfa.2022.128605
    Database NAL-Catalogue (AGRICOLA)

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  3. Article ; Online: Swelling suppression of black cotton soil by means of liquid immersion and surface modification

    Peiping Zhang / Jinqiu Huang / Peng Zhang / Wanglin Wen / Wenqing Li / Shaonan Xu / Weikun Ning / Shiding Miao

    Heliyon, Vol 5, Iss 12, Pp e02999- (2019)

    2019  

    Abstract: Although the surface organic modification of smectite has been investigated widely, the swelling behavior of clays has been scarcely studied with consideration of civil engineering applications. In this work a facile strategy of liquid-immersion (dilute ... ...

    Abstract Although the surface organic modification of smectite has been investigated widely, the swelling behavior of clays has been scarcely studied with consideration of civil engineering applications. In this work a facile strategy of liquid-immersion (dilute H2SO4 aqeuous solution) was proposed, and the 3-aminopropyltrimethoxysilane (APS) was utilized as surface modifier to suppress expansibility of black cotton soil (BCS) which is a type of highly swelling soils in tropical areas. Factors such as the incorporation dosage of APS, surface characters of soil treated by solution of H2SO4 or Na2CO3, and reaction temperatures/time were investigated to get lower swelling ratios. The treatment of BCS by H2SO4 was found more effective in immobilizing APS molecules, and hydronium ions were suppressed after the APS modification. The free swelling index (FSI) of BCS was decreased from 120% to 15% after treatment with H2SO4 and appropriate amount of APS modification. The reaction can be completed within several hours at the room temperature to ~80 °C. The soil samples were characterized by different means including the X-ray diffraction, Fourier-transform infrared spectroscopy, scanning electron microscope, thermogravimetric analysis and Zeta potential measurements. The APS molecules were found to react with –OH groups of the clay, and the hydrophobic groups provide surface hydrophobicity, which prevents hydration of cations within clay minerals. The APS was indicated to re-constructed lamellar structures of smectites after H2SO4 treatment, which suppressed the intra-crystalline and the subsequent osmotic swelling. This research highlights the liquid immersion and surface modification is applicable in diminishing swelling ratios of highly expansive black cotton soil.
    Keywords Physical chemistry ; Materials chemistry ; Materials science ; Black cotton soil ; Swelling suppression ; Liquid immersion ; Science (General) ; Q1-390 ; Social sciences (General) ; H1-99
    Subject code 710
    Language English
    Publishing date 2019-12-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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