Growing Nano-SiO2 on the Surface of Aramid Fibers Assisted by Supercritical CO2 to Enhance the Thermal Stability, Interfacial Shear Strength, and UV Resistance

Aramid fibers (AFs) with their high Young′s modulus and tenacity are easy to degrade seriously with ultraviolet (UV) radiation that leads to reduction in their performance, causing premature failure and limiting their outdoor end use. Herein, we report a method to synthesize nano-SiO2 on AFs surfaces in supercritical carbon dioxide (Sc-CO2) to simultaneously improve their UV resistance, thermal stability, and interfacial shear strength (IFSS). The effects of different pressures (10, 12, 14, 16 MPa) on the growth of nanoparticles were investigated. The untreated and modified fibers were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). It was found that the nano-SiO2-decorated fibers exhibited improvement of thermal stability and mechanical properties, and the IFSS of the nano-SiO2 modified fibers increases by up to 64% compared with the untreated fibers. After exposure to 216 h of UV radiation, the AFs-UV shows a less decrease in tensile strength, elongation to break and tensile modulus, retaining only 73%, 91%, and 85% of the pristine AFs, respectively, while those of AFs-SiO2-14MPa-UV retain 91.5%, 98%, and 95.5%. In short, this study presents a green method for growing nano-SiO2 on the surface of AFs by Sc-CO2 to enhance the thermal stability, IFSS, and UV resistance.

[1]  L. Motte,et al.  Iron oxide nanochains coated with silica: Synthesis, surface effects and magnetic properties , 2019, Applied Surface Science.

[2]  V. Zeleňák,et al.  Phase evolution during one-pot synthesis of amine modified mesoporous silica materials: Preparation, properties, carbon dioxide adsorption , 2019, Applied Surface Science.

[3]  Jiawei Wu,et al.  SiO2 -modified nanocomposite nanofiltration membranes with high flux and acid resistance , 2019, Journal of Applied Polymer Science.

[4]  N. Ahmad,et al.  Aqueous dispersible green luminescent yttrium oxide:terbium microspheres with nanosilica shell coating. , 2019, Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy.

[5]  Jiangtao Hu,et al.  Fabrication of highly durable polysiloxane-zinc oxide (ZnO) coated polyethylene terephthalate (PET) fabric with improved ultraviolet resistance, hydrophobicity, and thermal resistance. , 2019, Journal of colloid and interface science.

[6]  W. Yunus,et al.  Synthesis of silica from rice husk using acid pretreatment and its characterization , 2019 .

[7]  T. Maindron,et al.  Influence of silane coupling agent on the properties of UV curable SiO2-PMMA hybrid nanocomposite , 2018, Journal of Sol-Gel Science and Technology.

[8]  Yutong Han,et al.  Grafting degradable coordination polymer on aramid fiber surface to improve its interfacial properties , 2018, Materials Letters.

[9]  A. Özcan,et al.  Effects of different parameters on the synthesis of silica aerogel microspheres in supercritical CO2 and their potential use as an adsorbent , 2018, Journal of Sol-Gel Science and Technology.

[10]  S. Hui,et al.  Improvement of adhesion of kevlar fabrics to epoxy by surface modification with acetic anhydride in supercritical carbon dioxide , 2018, Polymer Composites.

[11]  Xiangyang Liu,et al.  Aramid fiber with excellent interfacial properties suitable for resin composite in a wide polarity range , 2018, Chemical Engineering Journal.

[12]  Meiyun Zhang,et al.  Fabrication of mechanically robust and UV-resistant aramid fiber-based composite paper by adding nano-TiO2 and nanofibrillated cellulose , 2018, Cellulose.

[13]  Xudong Cheng,et al.  Mechanical performance and thermal stability of glass fiber reinforced silica aerogel composites based on co-precursor method by freeze drying , 2018 .

[14]  F. Wang,et al.  Strong, transparent and flexible aramid nanofiber/POSS hybrid organic/inorganic nanocomposite membranes , 2018 .

[15]  J. Hao,et al.  Interfacial Hydrogen Bonds and Their Influence Mechanism on Increasing the Thermal Stability of Nano-SiO2-Modified Meta-Aramid Fibres , 2017, Polymers.

[16]  A. Gu,et al.  Building unique surface structure on aramid fibers through a green layer-by-layer self-assembly technique to develop new high performance fibers with greatly improved surface activity, thermal resistance, mechanical properties and UV resistance , 2017 .

[17]  Xudong Cheng,et al.  Nanoporous SiO2 grafted aramid fibers with low thermal conductivity , 2017 .

[18]  F. Dai,et al.  Mild surface modification of para-aramid fiber by dilute sulfuric acid under microwave irradiation , 2017 .

[19]  Jieyang Huang,et al.  Nondestructive grafting of PEI on aramid fiber surface through the coordination of Fe (III) to enhance composite interfacial properties , 2017 .

[20]  Byeong‐Su Kim,et al.  Electrophoretic deposition of aramid nanofibers on carbon fibers for highly enhanced interfacial adhesion at low content , 2016 .

[21]  Jianjun Xu,et al.  Ultraviolet resistance modification of poly(p-phenylene-1,3,4-oxadiazole) and poly(p-phenylene terephthalamide) fibers with polyhedral oligomeric silsesquioxane , 2015 .

[22]  Kong Haijuan,et al.  Surface modification of poly(p-phenylene terephthalamide) fibers with HDI assisted by supercritical carbon dioxide , 2015 .

[23]  A. Gu,et al.  Unique surface modified aramid fibers with improved flame retardancy, tensile properties, surface activity and UV-resistance through in situ formation of hyperbranched polysiloxane–Ce0.8Ca0.2O1.8 hybrids , 2015 .

[24]  T. Budtova,et al.  Cellulose-silica aerogels. , 2015, Carbohydrate polymers.

[25]  Yaofeng Zhu,et al.  Storable silicon/shape memory polyurethane hybrid sols prepared by a facile synthesis process and their application to aramid fibers , 2015, Journal of Sol-Gel Science and Technology.

[26]  L. Bufalino,et al.  Evaluation of reaction factors for deposition of silica (SiO₂) nanoparticles on cellulose fibers. , 2014, Carbohydrate polymers.

[27]  Xiaogang Chen,et al.  An investigation on sol–gel treatment to aramid yarn to increase inter-yarn friction , 2014 .

[28]  F. Taheri-Behrooz,et al.  Low-velocity impact response of woven Kevlar/epoxy laminated composites reinforced with multi-walled carbon nanotubes at ambient and low temperatures , 2014 .

[29]  A. Waas,et al.  Reactive Aramid Nanostructures as High‐Performance Polymeric Building Blocks for Advanced Composites , 2013 .

[30]  C. Erkey,et al.  Synthesis of nanostructured materials using supercritical CO2: Part I. Physical transformations , 2012, Journal of Materials Science.

[31]  Shizhong Cui,et al.  TiO2 and ZnO Water Sol Preparation by Sol–Gel Method and Application on Polyester Fabric of Antistatic Finishing , 2011 .

[32]  T. Vu-khanh,et al.  Hydrolytic and photochemical aging studies of a Kevlar®-PBI blend , 2011 .

[33]  Zhimin Chen,et al.  Preparation of hollow silica microspheres with controlled shell thickness in supercritical fluids , 2011 .

[34]  C. Erkey,et al.  Synthesis of nanostructured materials using supercritical CO2: Part II. Chemical transformations , 2011, Journal of Materials Science.

[35]  Ni Qingqing.  INTERFACIAL PROPERTIES OF ARAMID/SMPU-SiO_2 COMPOSITES , 2011 .

[36]  Seong-Woo Kim.  Characterization of UV curable hybrid hard coating materials prepared by sol-gel method , 2011 .

[37]  Wang Dan,et al.  Preparation of SiO2 Aerogels Heat Insulation Composites Reinforced by Aramid Fiber , 2009 .

[38]  J. Bae,et al.  Fabrication of hollow silica particles using copolymeric spheres prepared in supercritical carbon dioxide , 2009 .

[39]  Wei-min Liu,et al.  Effect of plasma treatment of Kevlar fabric on the tribological behavior of Kevlar fabric/phenolic composites , 2009 .

[40]  K. Byrappa,et al.  Nanoparticles synthesis using supercritical fluid technology - towards biomedical applications. , 2008, Advanced Drug Delivery Reviews.

[41]  L. Cheng,et al.  Preparation of a nanosilica-modified negative-type acrylate photoresist , 2008 .

[42]  A. P. Kharitonov,et al.  Properties of syndiotactic polystyrene composites with surface modified short Kevlar fiber , 2006 .

[43]  Shanyuan Wang,et al.  Effects of solar UV irradiation on the tensile properties and structure of PPTA fiber , 2006 .

[44]  P. Charpentier,et al.  Synthesis and Formation of Silica Aerogel Particles By a Novel Sol−Gel Route in Supercritical Carbon Dioxide , 2004 .

[45]  T. Kashiwagi,et al.  Flame‐retardant mechanism of silica: Effects of resin molecular weight , 2003 .

[46]  A. V. Rao,et al.  Surface chemical modification of silica aerogels using various alkyl-alkoxy/chloro silanes , 2003 .

[47]  Ya‐Ping Sun.  Supercritical Fluid Technology in Materials Science and Engineering: Syntheses: Properties, and Applications , 2002 .

[48]  G. Sui,et al.  Effects of heat treatment on the mechanical properties of Kevlar-29 fibre , 2000 .

[49]  G. Sheu,et al.  Surface modification of Kevlar 149 fibers by gas plasma treatment. Part II. Improved interfacial adhesion to epoxy resin , 1994 .

[50]  M. A. Morelli,et al.  Raman and infrared spectra on silica gel evolving toward glass , 1982 .