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Characterization of hybrid glass wool suspensions and optimization of microstructure and tensile strength of the associated wet-laid mats by various blendings and numbers of beating revolutions

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Abstract

This paper discussed the effect of various blendings and numbers of beating revolutions on the dewatering properties of hybrid glass wool (HGW) suspensions and tensile strength of the associated glassfiber wet-laid mats. Different percentages of flame attenuated glass wool (FAGW) were blended with centrifuged glass wool (CGW) to form HGW samples. These HGW samples were dispersed in water by beating at various revolutions and each beaten suspension followed the papermaking steps to form subsequent hybrid glassfiber mats (HGM). The suspended solid content, drainage resistance and drainage time of each HGW suspension and pore characteristics and tensile strength of the resulting HGM were recorded. Drainage resistances of all HGW suspensions initially increased with beating revolutions up to 5000r. Afterwards, the drainage resistances fluctuated at different values. The FAGW addition aided the integrity of glass fibers during beating, tuned the microstructure and enhanced the tensile strength of HGM but sacrificed the dewatering efficiency of glass wool suspensions. According to the results from beating revolutions versus tensile strength graph, gentle beating or medium beating benefited the tensile strength of the HGM. The optimum preparation condition for glassfiber wet-laid mats with ideal microstructure, high tensile strength and low manufacturing costs was beating HGW with 30 % CGW and 70 % FAGW at 5000r.

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Acknowledgments

This work was supported by Funding for Outstanding Doctoral Dissertation in NUAA (BCXJ13-10), Funding of Jiangsu Innovation Program for Graduate Education (the Fundamental Research Funds for the Central Universities, CXLX13_149), Major Achievements Transfer Projects of Jiangsu province (BA2013097), and a Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions. The first author also thanks the China Scholarship Council (CSC) for providing a scholarship for Ph.D. study at the University of California at Davis and thanks the NUAA for financial support during the short-term visit in Brunel University.

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Authors and Affiliations

  1. Super Insulation Composites Laboratory, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, People’s Republic of China

    Cheng-Dong Li, Zhao-Feng Chen & Muhammad-Umar Saeed

  2. Nanomaterials in the Environment, Agriculture and Technology (NEAT) Biological System Engineering, University of California, Davis, CA, 95616, USA

    Cheng-Dong Li

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  1. Cheng-Dong Li
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Correspondence to Zhao-Feng Chen.

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Li, CD., Chen, ZF. & Saeed, MU. Characterization of hybrid glass wool suspensions and optimization of microstructure and tensile strength of the associated wet-laid mats by various blendings and numbers of beating revolutions. Mater Struct 49, 1861–1869 (2016). https://doi.org/10.1617/s11527-015-0617-3

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