Optimized mechanical properties and thermal insulation capacity of foam glass through K2Ti6O13 whiskers addition
Tóm tắt
The fracture toughness and thermal insulation capacity of foam glass are of critical importance for its application as insulation lining of industrial flue, pipeline, and buildings. However, the nonuniform pore size distribution, significant brittleness, and low ability to hinder infrared radiation transfer lowered its mechanical properties and thermal insulation capacity. Therefore, the present work introduced a small amount of K2Ti6O13 whiskers (PTW) into foam glass to overcome these problems. The microstructure, mechanical properties, and thermal insulation ability of PTW containing foam glass were investigated. The results show that the introduced PTW improved the pore size distribution uniformity during the foaming process. The controlled structure and inhibited crack propagation by PTW contributed to the significantly enhanced mechanical strength and fracture toughness. Porosity was the key factor affecting the thermal insulation ability of samples at low temperatures, while the thermal conductivity of samples at above 400 ℃ was greatly decreased owing to the high infrared radiation reflectance of the introduced PTW. Compared with foam glass without PTW addition, both the maximum cold modulus of rupture (5.1 MPa) and optimized thermal conductivity (0.044–0.061 W/m·K at 25–800 ℃) were obtained in the sample added with 5 wt.% PTW foamed at 820 ℃. The researched high mechanical strength, fracture toughness, and thermal insulation foam glass exhibit huge prospects as insulation lining in the practical engineering fields.
Tài liệu tham khảo
Østergaard, M.B., Petersen, R.R., König, J., Bockowski, M., Yue, Y.Z.: Foam glass obtained through high-pressure sintering. J. Am. Ceram. Soc. 101(9), 3917–3923 (2018)
Ji, R., Zheng, Y.X., Zou, Z.H., Chen, Z.W., Wei, S., Jin, X.Y., Zhang, M.: Utilization of mineral wool waste and waste glass for synthesis of foam glass at low temperature. Constr. Build. Mater. 215, 623–632 (2019)
Ercenk, E.: The effect of clay on foaming and mechanical properties of glass foam insulating material. J. Therm. Anal. Calorim. 127, 137–146 (2017)
König, J., Lopez-Gil, A., Cimavilla-Roman, P., Rodriguez-Perez, M.A., Petersen, R.R., Østergaard, M.B., Iversen, N., Yue, Y.Z., Spreitzer, M.: Synthesis and properties of open- and closed-porous foamed glass with a low density. Constr. Build. Mater. 247, 118574 (2020)
D’Amore, G.K.O., Caniato, M., Travan, A., Turco, G., Marsich, L., Ferluga, A., Schmid, C.: Innovative thermal and acoustic insulation foam from recycled waste glass powder. J. Cleaner Prod. 165, 1306–1315 (2017)
Llaudis, A.S., Tari, M.J.O., Ten, F.J.G., Bernardo, E., Colombo, P.: Foaming of flat glass cullet using Si3N4 and MnO2 powders. Ceram. Int. 35(5), 1953–1959 (2009)
Tulyaganov, D.U., Fernandes, H.R., Agathopoulos, S., Ferreira, J.M.F.: Preparation and characterization of high compressive strength foams from sheet glass. J. Porous Mat. 13, 133–139 (2006)
Zhang, Q.P., He, F., Shu, H., Qiao, Y.C., Mei, S.X., Jin, M.F., Xie, J.L.: Preparation of high strength glass ceramic foams from waste cathode ray tube and germanium tailings. Constr. Build. Mater. 111, 105–110 (2016)
Yekta, B.E., Nia, S.H., Alizadeh, P.: The effect of B2O3, PbO and P2O5 on the sintering and machinability of fluormica glass-ceramics. J. Eur. Ceram. Soc. 25(6), 899–902 (2005)
Minay, E.J., Veronesi, P., Cannillo, V., Leonelli, C., Boccaccini, A.R.: Control of pore size by metallic fibres in glass matrix composite foams produced by microwave heating. J. Eur. Ceram. Soc. 24(10–11), 3203–3208 (2004)
Luo, R.Y., Ni, Y.F., Li, J.S., Yang, C.L., Wang, S.B.: The mechanical and thermal insulating properties of resin-derived carbon foams reinforced by K2Ti6O13 whiskers. Mater. Sci. Eng. A. 528(4–5), 2023–2027 (2011)
Sudheer, M., Hemanth, K., Raju, K., Bhat, T.: Enhanced Mechanical and wear performance of epoxy/glass composites with PTW/graphite hybrid fillers. Proc. Materials. Sci. 6, 975–987 (2014)
Liu, H., Wei, N., Wang, Z.F., Wang, X.T., Ma, Y.: Fabrication and properties of aluminum silicate fibrous materials with in situ synthesized K2Ti6O13 whiskers. Int. J. Min. Met. Mater. 24(11), 1335–1340 (2017)
Zhang, H.X., He, X.D., He, F.: Microstructure and physicochemical properties of ambient-dried SiO2 aerogels with K2Ti6O13 whisker additive. J. Alloy. Compd. 472(1–2), 194–197 (2009)
Eriksson, G., Pelton, A.D.: Critical evaluation and optimization of the thermodynamic properties and phase diagrams of the MnO-TiO2, MgO-TiO2, FeO-TiO2, Ti2O3-TiO2, Na2O-TiO2, and K2O-TiO2 systems. Metall. Mater. Trans. B 24(5), 795–805 (1993)
Li, M.H., Liu, H., Wang, Z.F., Wei, N., Wang, X.T., Ma, Y., Yan, W.: Facile synthesis of potassium hexatitanate whiskers by calcination at low temperature. J. Aust. Ceram. Soc. 56(3), 859–865 (2020)
Boccaccini, A.R., Veronesi, P., Leonelli, C.: Microwave processing of glass matrix composites containing controlled isolated porosity. J. Eur. Ceram. Soc. 21(8), 1073–1080 (2001)
Chen, X.D., Wu, S.X., Zhou, J.K.: Influence of porosity on compressive and tensile strength of cement mortar. Constr. Build. Mater. 40, 869–874 (2013)
Guo, H.S., Ye, F.B., Li, W.F., Song, X.Z., Xie, G.F.: Preparation and characterization of foamed microporous mullite ceramics based on kyanite. Ceram. Int. 41(10), 14645–14651 (2015)
Gibson, L.J., Ashby, M.F.: Cellular solids: structure and properties, 2nd edn. Cambridge University Press, Cambridge (1997)
Kim, H.S., Plubrai, P.: Manufacturing and failure mechanisms of syntactic foam under compression. Compos. Part A 35, 1009–1015 (2004)
Wei, G.C., Becher, P.F.: Development of SiC-whisker-reinforced ceramics. Am. Ceram. Soc. Bull. 64(2), 298–304 (1985)
Liu, R., Wang, C.A.: Effects of mono-dispersed PMMA micro-balls as pore-forming agent on the properties of porous YSZ ceramics. J. Eur. Ceram. Soc. 33, 1859–1865 (2013)
Gong, L., Wang, Y., Cheng, X., Zhang, R., Zhang, H.: Thermal conductivity of highly porous mullite materials. Int. J. Heat Mass Trans. 67, 253–259 (2013)
Shackelford, J.F., Alexander, W.: CRC Materials Science and Engineering Handbook, 3rd edn. CRC Press, Boca Raton, FL (2001)
Lee, O.J., Lee, K.H., Yim, T.J., Kim, S.Y., Yoo, L.P.: Detremination of mesopore size of aerogels from thermal conductivity measurements. J. Non. Cryst. Solids 298, 287–292 (2002)
Zhao, C.Y., Lu, T.J., Hodson, H.P., Jackson, J.D.: The temperature dependence of effective thermal conductivity of open-celled steel alloy foams. Mater. Sci. Eng. A. 367(12), 123–131 (2004)
Jin, X.T., Yuan, K.K., Xie, Y.S., Xu, C.H., Wang, L., Wang, X.Q., Zhang, G.H., Zhu, L.Y., Xu, D.: Preparation of K2Ti6O13 fibers by electrospinning for near-infrared reflectivity. Ceram. Int. 45(11), 14198–14204 (2019)