PREPARATION AND CHARACTERIZATION OF SILICA AEROGEL COMPOSITE REINFORCED BY OXYGEN PLASMA MODIFIED GLASS FIBER

Abstract

Abstract: In order to prepare the hydrophobic silica aerogel composite with excellent performance, we used oxygen plasma treated glass fiber as the reinforcing phase, combined with sol-gel method and supercritical CO₂ drying process to prepare silica aerogel composite and characterized the structure, surface group, hydrophobicity, thermal and mechanical properties of the composites. On the one hand, the results showed that oxygen plasma treatment enhanced thermal insulation and mechanical performance of the composites by improving the bonding ability of glass fiber and silica aerogel. On the other hand, the results showed that the hydrophobic silica aerogel composite reinforced by oxygen plasma treated glass fiber had low density (0.228 g/cm³), low thermal conductivity (0.0214 W/m·K), high porosity (80.0%) , high specific surface area (741.66 m²·g^-1), high hydrophobic angle (129.2°) and high compressive strength (σ_20%=152.88 kPa) when the ratio of MTMS to TEOS is 0.4∶1. These excellent performances indicated that silica aerogel composites reinforced by oxygen plasma treated glass fiber have broad applications prospects in the field of thermal insulation.

Key words: oxygen plasma, silica aerogel, glass fiber, composites

CLC Number:

TB332

TIAN Jia-qi, TAN Hui-jun, Sameera Shafi, ZHAO Ya-ping. PREPARATION AND CHARACTERIZATION OF SILICA AEROGEL COMPOSITE REINFORCED BY OXYGEN PLASMA MODIFIED GLASS FIBER[J]. Composites Science and Engineering, 2020, 0(7): 45-52.

References

[1]Dorcheh A S, Abbasi M H. Silica aerogel; synthesis, properties and characterization[J]. Journal of Materials Processing Tech, 2008, 199(1-3): 10-26.
[2]Fricke J. Aerogels-highly tenuous solids with fascinating properties[J]. Journal of Non-Crystalline Solids, 1988, 100(1): 169-173.
[3]Kim B, Lim H K, Choi M H, et al. Detection of parenchymal abnormalities in acute pyelonephritis by pulse inversion harmonic imaging with or without microbubble ultrasonographic contrast agent: Correlation with computed tomography[J]. Journal of Ultrasound in Medicine, 2001, 20(1): 5-14.
[4]Schultz J M, Jensen K I, Kristiansen F H. Super insulating aerogel glazing[J]. Solar Energy Materials & Solar Cells, 2005, 89(2): 275-285.
[5]Cunha J P D, Neves F, Lopes M I. On the reconstruction of Cherenkov rings from aerogel radiators[J]. Nuclear Inst & Methods in Physics Research A, 2000, 452(3): 401-421.
[6]Jang K Y, Kim K, Upadhye R S. Study of sol-gel processing for fabrication of hollow silica-aerogel spheres[J]. Journal of Vacuum Science & Technology A Vacuum Surfaces & Films, 1990, 8(3): 1732-1735.
[7]Wang P, Körner W, Emmerling A, et al. Optical investigations of silica aerogels[J]. Journal of Non-Crystalline Solids, 1992, 145: 141-145.
[8]Wittwer V. Development of aerogel windows[J]. Journal of Non-Crystalline Solids, 1992, 145: 233-236.
[9]Kwon Y G, Choi S Y, Kang E S, et al. Ambient-dried silica aerogel doped with TiO₂ powder for thermal insulation[J]. Journal of Materials Science, 2000, 35(24): 6075-6079.
[10]Boday D J, Keng P Y, Muriithi B, et al. Mechanically reinforced silica aerogel nanocomposites via surface initiated atom transfer radical polymerizations[J]. Journal of Materials Chemistry, 2010, 20(33): 6863-6865.
[11]Parmenter K E, Milstein F. Mechanical properties of silica aerogels[J]. Journal of Non-Crystalline Solids, 1998, 223(3): 0-189.
[12]Lim K B, Lee D C. Surface modification of glass and glass fibers by plasma surface treatment[J]. Surface and Interface Analysis, 2004, 36(3): 254-258.
[13]Wade G A, Cantwell W J, Pond R C. Plasma surface modification of glass fiber-reinforced nylon-6,6 thermoplastic composites for improved adhesive bonding[J]. Interface Science, 2000, 8(4): 363-373.
[14]Wade G A, Cantwell W J. Adhesive bonding and wettability of plasma treated, glass fiber-reinforced nylon-6,6 composites[J]. Journal of Materials Science Letters, 2000, 19(20): 1829-1832.
[15]Cech V, Knob A, Hosein H A, et al. Enhanced interfacial adhesion of glass fibers by tetravinylsilane plasma modification[J]. Composites Part A Applied Science & Manufacturing, 2014, 58(3): 84-89.
[16]Liao Y, Wu H, Ding Y, et al. Engineering thermal and mechanical properties of flexible fiber-reinforced aerogel composites[J]. Journal of Sol-Gel Science and Technology, 2012, 63(3): 445-456.
[17]Lin C, Ritter J A . Effect of synthesis pH on the structure of carbon xerogels[J]. 1997, 35(9): 1271-1278.
[18]Sing K S W. Reporting physisorption data for gas/solid systems with special reference to the determination of surface area and porosity (Provisional)[J]. Pure and Applied Chemistry, 1982, 54(11): 2201-2218.
[19]Kim K H, Oh Y , Islam M F. Mechanical and thermal management characteristics of ultrahigh surface area single-walled carbon nanotube aerogels[J]. Advanced Functional Materials, 2013, 23(3): 377-383.
[20]Brock S L, Yu H. Effects of nanoparticle shape on the morphology and properties of porous CdSe assemblies (aerogels)[J]. Acs Nano, 2008, 2(8): 1563-1570.
[21]Liu J L, Lin R B. Structural properties and reactivities of amino-modified silica fume solid sorbents for low-temperature CO₂ capture[J]. Powder Technology, 2013, 241(Complete): 188-195.
[22]Rao A V, Kulkarni M M, Amalnerkar D P, et al. Surface chemical modification of silica aerogels using various alkyl-alkoxy/chloro silanes[J]. Applied Surface Science, 2003, 206(1-4): 262-270.
[23]Shafi S, Rahul N, Ding X, et al. Improved heat insulation and mechanical properties of silica aerogel/glass fiber composite by impregnating silica gel[J]. Journal of Non-Crystalline Solids, 2018, 503-504: 78-83.
[24]Mahadik S A, Pedraza F, Parale V G, et al. Organically modified silica aerogel with different functional silylating agents and effect on their physico-chemical properties[J]. Journal of Non-Crystalline Solids, 2016, 453: 164-171.
[25]Yang X, Sun Y, Shi D, et al. Experimental investigation on mechanical properties of a fiber-reinforced silica aerogel composite[J]. Materials Science & Engineering: A (Structural Materials: Properties, Microstructure and Processing), 2011, 528(13-14): 4830-4836.