Phenolic Binders Based on Resole Resins for the Foundry Industry - Thermal Characteristics
DOI:
https://doi.org/10.24425/afe.2025.155347Abstract
The composition of gases emitted from commercial resin-based binders, under the influence of high temperatures of liquid metal (up to 1500°C), is determined in this summary with a view to assessing the potential harmfulness of these gases to the environment and workers. Mesaurements have been carried out using coupled analytical techniques, such as e.g. HS-GC/MS (Headspace/Gas Chromatography/Mass Spectrometry) or TG/DCS/FTIR (simultaneous Thermogravimetry/Differential Scanning Calorimetry coupled with Fourier Transform Infrared spectroscopy), which allow the simulation of conditions during casting production. A review of the existing literature indicates that the thermal decomposition of commercial resin-based binders is typically characterized by a multi-step process involving a series of sequential reactions, depending on the type of atmosphere. The process of decomposition has been observed to result in the release of various compounds, including water, carbon monoxide, carbon dioxide, phenol, BTEX (benzene, toluene, ethylbenzene and xylenes) and PAHs (polycyclic aromatic hydrocarbons) groups and others, from the tested binders. The composition and quantity of these gases have been found to be contingent on the type of binder, the temperature, and the heating rate of the sample. The decomposition of the binder has been demonstrated to occur through different mechanisms, which depending on the heating rate of the samples.References
[1] Berdnikova, P.V., Zhizhina, E.G. & Pai, Z.P. (2021). Phenol-formaldehyde resins: properties, fields of application, and methods of synthesis. Catalysis in Industry. 13, 119-124. https://doi.org/10.1134/S2070050421020033.
[2] Alieva, A.P. (2021). Prospects for obtaining phenol-formaldehyde oligomers. Plasticheskie massy, (9-10), 22-26.
[3] Roczniak, A. (2019). Research of the influence of temperature and type of atmosphere on the release of chemical compounds from mold sand Alphaset technology. (in Polish). Kraków: AGH University of Science and Technology.
[4] Holtzer, M. & Kmita, A. (2020). Mold and core sands in metalcasting: chemistry and ecology. Sustainable Development.219-241.
[5] Ghosh, D.K. (2019). Comparison of molding sand technology between alphaset (APNB) and furan (FNB). Archives of Foundry Engineering. 19(4), 11-20. DOI: 10.24425/afe.2019.129623.
[6] Kmita, A., Roczniak, A. & Holtzer, M. (2016). The identification of pyrolysis products of the Alphaset binder with gas chromatography / mass spectrometry. Metalurgija. 56(1-2), 21-24.
[7] Kmita, A., Benko, A., Roczniak, A., Fraczek-Szczypta, A. & Holtzer, M. (2018). Pyrolysis of organic ester cured alkaline phenolic resin: Identification of products. Journal of Analytical and Applied Pyrolysis. 129, 6-12. https://doi.org/10.1016/j.jaap.2017.12.014.
[8] Kmita, A., Benko, A., Roczniak, A., & Holtzer, M. (2020). Evaluation of pyrolysis and combustion products from foundry binders: potential hazards in metal casting. Journal of Thermal Analysis and Calorimetry. 140, 2347-2356. https://doi.org/10.1007/s10973-019-09031-9.
[9] Scarbel, P., Bats, C.E. & Griffin, J. (2006). Effect of mold and binder formulation on gas evolution when pouring aluminum casting. AFS Transactions. 114, 435-445.
[10] Lytle, C.A., Bertsch, W. & Mc Kinley, M.D. (1998). Determination of thermal decomposition product from phenolic urethane resin by pyrolysis – gas chromatography –mass spectrometry. Journal of High Resolution Chromatography. 21(2), 128-132. ISSN: 0935-6304.
[11] Kmita, A. (2021). Thermal decomposition of nanocomposite foundry binder based on phenol-formaldehyde resin with zinc ferrite. Kraków: Wydawnictwa AGH. (in Polish).
[12] Laramee, R. & Canfield, A. (1972). Carbon/Carbon Composites—Solid Rocket Nozzle Material Processing, Design, and Testing. In H.T. Corten (Eds.), Composite Materials: Testing and Design (Second Conference). West Conshohocken, PA 19428-2959: ASTM International. https://doi.org/10.1520/STP27772S.
[13] Zhao, Yong, Yan, N. & Feng, M.W. (2013). Thermal degradation characteristics of phenol–formaldehyde resins derived from beetle infested pine barks. Thermochimica Acta. 555(10), 46-52. https://doi.org/10.1016/j.tca.2012.12.002.
[14] Gardziella, A., Pilato, L.A., Knop, A. (2000). Phenolic resins. Chemistry, applications, standarizations, safety and ecology. Springer, Verlag.
[15] Wang, S., Xing, X., Li, J. & Jing, X. (2018). Synthesis and characterization of poly (dihydroxybiphenyl borate) with high char yield for high-performance thermosetting resins. Applied Surface Science. 428, 912-923. https://doi.org/10.1016/j.apsusc.2017.09.213.
[16] Chiantore, O., Lazzari, M. & Fontana, M. (1995). Thermal decomposition of phenol-formaldehyde foundry resins. International Journal of Polymer Analysis and Characterization. 1(2), 119-130. https://doi.org/10.1080/10236669508233867.
[17] Johnston, P. K., Doyle, E. & Orzel, R. A. (1988). Phenolics: a literature review of thermal decomposition products and toxicity. Journal of the American College of Toxicology. 7(2), 201-220.
[18] He, G.B. & Riedl, B. (2003). Phenol –urea-formaldehyde cocondensed resol resins. Their synthesis, curing kinetics, and network properties. Journal of Polymer Science, Part B. 41(16), 1929-1938. https://doi.org/10.1002/polb.10558.
[19] Fyfe, C.A., McKinnon, M.S., Rudin, A. & Tchir, W.J. (1983). Investigation of the mechanism of the thermal decomposition of cured phenolic resins by high-resolution carbon-13 CP/MAS solid-state NMR spectroscopy. Macromolecules. 16(7), 1216-1219.
[20] Wang, J., Jiang, N. & Jiang, H. (2009). Effect of the evolution of phenol-formaldehyde resin on the high-temperature bonding. International Journal of Adhesion and Adhesives. 29(7), 718-723. https://doi.org/10.1016/j.ijadhadh.2009.03.001.
[21] Mustata, F., Tudorachi, N. & Bicu, I. (2015). The kinetic study and thermal characterization of epoxy resins crosslinked with amino carboxylic acids. Journal of Analytical and Applied Pyrolysis. 112, 180-191. https://doi.org/10.1016/j.jaap.2015.01.030.
[22] Visakh, P.M., Arao, Y. (2015). Thermal degradation of polymer blends, composites and nanocomposites. Springer.
[23] Rao, M.P.R., Rao, B.C. & Rajan, R.S.G. (1998). Thermal degradation kinetics of phenol — crotonaldehyde resins. Polymer Degradation and Stability. 61(2), 283-288. https://doi.org/10.1016/S0141-3910(97)00210-3.
[24] Kmita, A., Knauer, W., Holtzer, M., Hodor, K., Piwowarski, G., Roczniak, A. & Górecki, K. (2019). The decomposition process and kinetic analysis of commercial binder based on phenol-formaldehyde resin, using in metal casting. Applied Thermal Engineering. 156, 263-275. https://doi.org/10.1016/j.applthermaleng.2019.03.093.
[25] Poljanšek, I. & Krajnc, M. (2005). Characterization of phenol-formaldehyde prepolymer resins by in line FT-IR spectroscopy. Acta Chimica Slovenica. 52(3), 238-244.
[26] Friedman, H. (1969). New methods for evaluating kinetic parameters from thermal analysis data. Journal of Polymer Science Part B: Polymers Letters. 7, 41-46. https://doi.org/10.1002/pol.1969.110070109.
[27] Levchik, S.V. & Weil, E.D. (2004). Thermal decomposition, combustion and flame-retardancy of epoxy resins - A review of the recent literature. Polymer International. 53(12), 1901-1929. https://doi.org/10.1002/pi.1473.
[28] Holtzer, M., Dańko, R., Dańko, J., Kubecki, M., Żymankowska-Kumon, S., Bobrowski, A., Spiewok, W. (2013). The assesment of harmfulness of binding materials used for a new generation of core and molding sands. AKAPIT, Kraków (in Polish).
[29] Holtzer, M, Kmita, A. & Dańko, R, (2015). The gases generation during thermal decomposition of moulding sands - comparison of inorganic and organic binders. Slévárenství. 63(7-8), 246-247.
[30] Trinowski, D.M. (2016). Comparing moulding and core trends in the US and EU casting industries. Huttenes-Albertus Chemische Werke GmbH, 1-13.
[31] Kmita, A., Fischer, C., Hodor, K., Holtzer, M. & Roczniak, A. (2018). Thermal decomposition of foundry resins: A determination of organic products by thermogravimetry-gas chromatography-mass spectrometry (TG-GC-MS). Arabian Journal of Chemistry. 11(3), 380-387. https://doi.org/10.1016/j.arabjc.2016.11.003.
[32] Holtzer, M., Dańko, R. & Kmita, A. (2016). Influence of a reclaimed sand addition to moulding sand with furan resin on its impact on the environment. Water, Air and Soil Pollution. 227(1), 1-12. https://doi.org/10.1007/s11270-015-2707-9.
[33] Holtzer, M., Dańko, R., Górny, M., Kmita, A. (2015). The mold/casting interface phenomena and their influence on the surface quality of casting. Cracow University of Technology Publisher.
[34] Holtzer, M., Dańko, R., Kmita, A., Drożyński, D., Kubecki, M., Skrzyński, M. & Roczniak, A. (2020). Environmental impact of the reclaimed sand addition to molding sand with furan and phenol-formaldehyde resin — a comparison. Materials. 13(19). 4395, 1-12. https://doi.org/10.3390/ma13194395.
[35] Holtzer, M., Dańko, R., Piasny, S., Kubecki, M., Drożyński, D., Roczniak, A., Skrzyński, M. & Kmita, A. (2021). Research on the release of dangerous compounds from the BTEX and PAHs groups in industrial casting conditions. Materials. 14(10), 2581. https://doi.org/10.3390/ma14102581.
[36] Report (2021). Phenolic Resin Market. Retrieved October 18, 2024, from https://www.researchandmarkets.com/reports/4053239/phenolic-resin-market-by-typeresol-novolac.
[37] EPA United States Environmental Protection Agency. (2018). What are hazardous air pollutants? Retrieved October 17, 2024, from https://www.epa.gov/haps/what-are-hazardous-air-pollutants.
[38] Giese, S.R, Shepard, A. (2014). Understanding emissions characteristics of a foundry sand binder. In 71st World Foundry Congress, 19-21 May 2014 (pp. 934-942). Bilbao, Spain.
[39] Lefebvre, J., Mamleev, V., Le Bras, M. & Bourbigot, S. (2005). Kinetic analysis of pyrolysis of cross-linked polymers. Polymer Degradation and Stability. 88(1), 85-91. https://doi.org/10.1016/j.polymdegradstab.2004.02.020.
[40] Bouajila, J., Raffin, G., Alamercery, S., Waton, H., Sanglar, C. & Grenier-Loustalot, M.F. (2003). Phenolic resins (IV). Thermal degradation of crosslinked resins in controlled atmospheres. Polymers and Polymer Composites. 11(5), 345-357. https://doi.org/10.1177/096739110301100501.
[41] Giese, S.R., Roorda, S.C. & Patersson, M.A. (2009). Thermal analysis of phenolic urethane binder and correlated properties. AFS Transactions. 117, 355-366.
[42] Gao Z, Lang X, Chen S, Zhao C (2021). Mini-review on the synthesis of lignin-based phenolic resin. Energy & Fuels. 35, 22, 18385-18395.
[43] Wan, P., Zhou, J., Li, Y., Yin, Y., Huang, D., Ji, X. & Shen, X. (2019). Experimental study on gas evolution process of binders in foundry industry based on TG-MS. Procedia Manufacturing. 37, 311-318. https://doi.org/10.1016/j.promfg.2019.12.053.
[44] Qian, X., Wan, P., Yin, Y., Qi, Y., Ji, X., Shen, X., Li, Y. & Zhou, J. (2022). Gas evolution characteristics of three kinds of no-bake resin-bonded sands for foundry in production. China Foundry. 19(2), 140-148. https://doi.org/10.1007/s41230-022-1031-4.
[45] Lewandowski, J.L. (1997). Materials for foundry moulds. AKAPIT. (in Polish)
[46] Pielichowski, K. (2013). Application of thermal analysis methods in the study of organic materials. Retrieved October 20, 2024, from https://Pg.Gda.Pl/Info/Polimery/Files/2013/10/Im-Swp-l-002h.pdf. (in Polish).
[47] Pielichowski, K., Njuguna, J., Majka, T.M. (2022). Thermal degradation of polymeric materials. Elsevier.
[48] Schnabel, W. (1981). Polymer degradation: principles and practical applications. Walter de Gruyter GmbH & Co KG.
[49] Fink, J. K. (2017). Reactive polymers: fundamentals and applications: a concise guide to industrial polymers. William Andrew.
[50] Rabek, J.F. (2017). Modern knowledge about polymers. Wydawnictwo Naukowe PWN. (in Polish).
[51] Bortel, E. (1994). Introduction to Polymer Chemistry. UJ, Kraków (in Polish).
[52] Pielichowski, J., Sobczak, J., Żółkiewicz, Z., Hebda, E. & Karwiński, A. (2011). The thermal analysis of polystyrene foundry model. Transaction of the Foundry Research Institute. 1, 15-21. (in Polish).
[53] Florjańczyk, Z., Penczek, S. (2002). Polymer Chemistry.
Volume II Basic Synthetic Polymers and Their Applications. Oficyna Wydawnicza Politechniki Warszawskiej. (in Polish).
[54] Shuklaa, S.K., Srivastavaa, D. (2001). Epoxy/Resole blends-A study of its degradation kinetics. Indian Journal of Chemical Technology. 8, 357-361.
[55] Yangfei, C., Zhiqin, C., Shaoyi, X. & Hongbo, L. (2008). A novel thermal degradation mechanism of phenol-formaldehyde type resine. Thermochimi Acta. 476(1-2), 39-43. https://doi.org/10.1016/j.tca.2008.04.013.
[56] Chaussoy, N., Brandt, D. & Gérard, J.F. (2023). Formaldehyde-free and phenol-free non-toxic phenolic resins with high thermostability. ACS Applied Polymer Materials. 5(7), 5630-5640.
[57] Wang, C., Wu, Y., Liu, Q. & Wang, F. (2011). Analysis of the behaviour of pollutant gas emissions during wheat straw/coal cofiring by TG-FTIR. Fuell Process Technology. 92(5), 1037-1041. https://doi.org/10.1016/j.fuproc.2010.12.029.
[58] Chai, Y., Liu, J., Zhao, Y. & Yan, N. (2016). Characterization of modified phenol formaldehyde resole resins synthesized in situ with various boron compounds. Industrial & Engineering Chemistry Research. 55(37), 9840-9850.
[59] McKinley, M.D., Jefcoat, I.A., Herz, W.J. & Frederick, C. (1993). Air emissions from foundries: a current survey of literature, supplies and foundrymen. American Foundry Society Transactions. 101, 979-990.
[60] Liu, Y., Xie, Q., Li, X., Tian, F., Qiao, X., Chen, J. & Ding, W. (2019). Profile and source apportionment of volatile organic compounds from a complex industrial park. Environmental Science: Processes & Impacts. 21, 9-18. DOI: 10.1039/C8EM00363G.
[61] Major-Gabryś, K. (2016). Environmentally friendly foundry moulding and core sands. Archives of Foundry Engineering. Habilitation dissertation.(in Polish).
[62] Jiang, H., Wang, J., Wu, S., Wang, B. & Wang, Z. (2010). Pyrolysis kinetics of phenol-formaldehyde resin by non-isothermal thermogravimetry. Carbon. 48(2), 352-358. https://doi.org/10.1016/j.carbon.2009.09.036.
[63] Wang, J., Jiang, H. & Jiang, N. (2009). Study on the pyrolysis of phenol-formaldehyde (PF) resin and modified PF resin. Thermochimica Acta. 496(1-2), 136-142. https://doi.org/10.1016/j.tca.2009.07.012.
[64] Grochowalski, A., Lassen, C., Holtzer, M., Sadowski, M. & Hudyma, T. (2007). Determination of PCDDs, PCDFs, PCBs and HCB emissions from the metallurgical sector in Poland. Environmental Science and Pollution Research-International. 14, 326-332. https://doi.org/10.1065/espr2006.05.303.
[65] Holtzer, M, Kmita, A. & Roczniak, A. (2014). New more friendly furfuryl resins. Archives of Foundry Engineering, 14(4SI), 47-50.
[66] Alonso, M.V., Oliet, M., Domínguez, J.C., Rojo, E. & Rodríguez, F. (2011). Thermal degradation of lignin-phenol-formaldehyde and phenol-formaldehyde resol resins : Structural changes, thermal stability, and kinetics. Journal of Thermal Analysis and Calorimetry. 105(1), 349-356. https://doi.org/10.1007/s10973-011-1405-0.
[67] Holtzer, M. (2015). Influence of the addition of the reclaimed sand on the quality of castings and harmfulness of the new generation core and moulding sands. AKAPIT. (in Polish).
[68] Kubecki, M. (2016). Determination of selected dangerous air pollutants, generated in the process of thermal decomposition of molding sands with furan resins. AGH University of Science and Technology in Krakow. (in Polish).
[69] Major-Gabryś, K., Grabarczyk, A. & Dobosz, S.M. (2018). Modification of foundry binders by biodegradable material. Archives of Foundry Engineering. 18, 31-34. DOI: 10.24425/122498.
[70] Kmita, A. & Hutera, B. (2012). Effect of water glass modification on its viscosity and wettability of quartz grains. Archives of Foundry Engineering. 12(3). DOI: 10.2478/v10266-012-0082-1.
[71] Kmita, A. & Roczniak, A. (2017). Nanocomposites based on water glass matrix as a foundry binder: chosen physicochemical properties. Archives of Foundry Engineering. 17(1), 93-98. DOI: 10.1515/afe-2017-0017.
[72] Kmita, A., Drożyński, D., Roczniak, A., Gajewska, M., Marciszko, M., Górecki, K. & Baczmański, A. (2018). Adhesive hybrid nanocomposites for potential applications in moulding sands technology. Composites. Part B, Engineering. 146, 124-131. https://doi.org/10.1016/j.compositesb.2018.03.046.
[73] Kmita, A. & Hutera, B. (2013). Water glass modification and its impact on the mechanical properties of moulding sands. Archives of Foundry Engineering. 13(2), 81-84.
[74] Kusch, P., Knupp, G., Fink, W., Schroeder-Obst, D., Obst, V. & Steinhaus, J. (2014). Application of pyrolysis–gas chromatography–mass spectrometry for the identification of polymeric materials. LCGC North America. 32(3), 20-217.
[75] Chuang, W., Lei, P., Zhen-hai, S., Bing-liang, L & Ke-Zhi, L. (2019). Preparation, thermal stability and deflection of a density gradient thermally-conductive carbon foam material derived from phenolic resin. Results in Physics. 14, 102448, 1-12. https://doi.org/10.1016/j.rinp.2019.102448.
[76] Li, X.H., Meng, Y.Z., Zhu, Q. & Tjong, S.C. (2003). Thermal decomposition characteristics of poly(propylene carbonate) using TG/IR and Py-GC/MS techniques. Polymer Degradation and Stability. 81(1), 157-165. https://doi.org/10.1016/S0141-3910(03)00085-5.
[77] Sobera, M. & Hetper, J. (2003). Pyrolysis – gas chromatography – mass spectrometry of cured phenolic resins. Journal of Chromatography A. 993(1-2), 131-133. https://doi.org/10.1016/S0021-9673(03)00388-1.
[78] Chen, Y., Chen, Z., Xiao, S. & Liu, H. (2008). A novel thermal degradation mechanism of phenol-formaldehyde type resins. Thermochimica Acta. 476(1-2), 39-43. https://doi.org/10.1016/j.tca.2008.04.013.
[79] Testoni, F. & Frisina, G. (1990). Qualitative analysis of a commercially available phenol-formaldehyde resin, by static and dynamic headspace analysis using a mass-selective detector. Journal of Chromatography A. 509(1), 101-109. https://doi.org/10.1016/S0021-9673(01)93242-X.
[80] Phillips, O., Schwartz, J.M. & Kohl, P.A. (2016). Thermal decomposition of poly(propylene carbonate): end-capping, additives, and solvent effects. Polymer Degradation and Stability. 125, 129-139. https://doi.org/10.1016/j.polymdegradstab.2016.01.004.
[81] Lu, X.L., Zhu, Q. & Meng, Y.Z. (2005). Kinetic analysis of thermal decomposition of poly(propylene carbonate). Polymer Degradation and Stability. 89(2), 282-288. https://doi.org/10.1016/j.polymdegradstab.2004.12.025.
[82] Laino, T., Tuma, C., Moor, P., Martin, E., Stolz, S. & Curioni, A. (2012). Mechanisms of propylene glycol and triacetin pyrolysis. The Journal of Physical Chemistry A. 116(18), 4602-4609.
[83] Zhao, Y., Yan, N. & Feng, M.W. (2013). Thermal degradation characteristic of phenol – formaldehyde resins derived from betele infested pine barks. Thermochimica Acta. 555, 46-52. https://doi.org/10.1016/j.tca.2012.12.002.
[84] Wang, Yujue, Cannon, F.S., Salama, M., Goudzwaard, J. & Furness, J.C. (2007). Characterization of hydrocarbon emissions from green sand foundry core binders by analytical pyrolysis. Environmental Science and Technology, 41(22), 7922-7927.
[85] Wang, Y., Zhang, Y., Su, L., Li, X., Duan, L., Wang, C. & Huang, T. (2011). Hazardous air pollutant formation from pyrolysis of typical chinese casting materials. Environmental Science & Technology. 45(15), 6539-6544.
[86] Tiedje, N., Crepaz, R., Eggert, T. & Bey, N. (2010). Emission of organic compounds from mould and core binders used for casting iron, aluminium and bronze in sand moulds. Journal of Environmental Science and Health Part A. 45(14), 1866-1876. https://doi.org/10.1080/10934529.2010.520595.
[87] Strzemiecka, B., Zięba-Palus, J., Voelkel, T., Lachowicz, T. & Socha, E. (2016). Examination of the chemical changes in cured phenol-formaldehyde resines during storage. Journal of Chromatography A. 1441, 106-115. https://doi.org/10.1016/j.chroma.2016.02.051.
[88] Dungan, R.S. & Reeves, J.B. (2005). Pyrolysis of foundry sand resins: a determination of organic products by MS. Journal of Environmental Science and Health. 40, 1557-1567. https://doi.org/10.1081/ESE-200060630.
[89] Hunter, B. (2001). Reference document on best available techniques in the ferrous metals processing industry. Integrated Pollution Prevention and Control (IPPC).
[90] Bats, C. E. & Scott, W.D. (1977). Decomposition of resin binders and the relationship between the gases formed and the casting surface quality. AFS Transactions. 85(3), 209–226.
[91] Matsushita, T., Sundaram, D., Belov, I. & Dioszegi, A. (2024). Kinetic model for the decomposition rate of the binder in a foundry sand application. Archives of Foundry Engineering. 24(3), 43-49. https://doi.org/10.24425/afe.2024.151289.
[92] European Commission. (2015). Best Available Techniques (BAT) Reference Document for the Propuction of pulp, paper and board. Industrial Emission Directive 2010/75/EU (Intergated Pollution Prevention and Control). https://doi.org/10.2791/370629.
[93] Huang, R., Zhang, B. & Tang, Y. (2016). Application conditions for ester cured alkaline phenolic resin sand. China Foundry. 13(4), 231-237. https://doi.org/10.1007/s41230-016-6022-x.
[94] Kmita, A., Drozyński, D., Mocek, J., Roczniak, A., Zych, J. & Holtzer, M. (2016). Gas evolution rates of graphite protective coatings in dependence on the applied solvent and kind of atmosphere. Archives of Metallurgy and Materials. 61(4), 2129-2134. DOI: 10.1515/amm-2016-0284.
[95] Sobczak, J. (2013). Founder’s Guide. Wydawnictwo Stowarzyszenia Technicznego Odlewników Polskich. (in Polish).
[96] Dańko, J., Dańko, R., Łucarz, M. (2007). Processes and devices for reclamation of used moulding sands. Akapit.
[97] Roczniak, A., Kmita, A. (2017). Thermosetting polymers used in foundry to bond the mineral matrix and their impact on the environment. In Z. Czyż & K. Maciąg (Eds.), Current technologies of material technology. Wydawnictwo Naukowe TYGIEL. (in Polish).
[98] Roczniak, A., Holtzer, M. & Kmita, A. (2018). Research of emission of commercial binders used in ALPHASET technology - Estimated quantitative analysis. Archives of Foundry Engineering. 18(1), 109-114. DOI: 10.24425/118821.
[99] Chen, Z.Q., Chen, Y.F. & Liu, H.B. (2013). Pyrolysis of phenolic resin by TG-MS and FTIR analysis. Advanced Materials Research. 631-632, 104-109. https://doi.org/10.4028/www.scientific.net/AMR.631-632.104.
[100] Yu, Z.L, Gao, Y.C., Qin, B, Ma, Z.Y. & Yu, S.H (2024). Revitalizing traditional phenolic resin toward a versatile platform for advanced materials. Accounts of Materials Research. 5(2), 146-159.
[101] Liang, B., Wang, J., Hu, J., Li, C., Li, R., Liu, Y., Zeng, K., & Yang, G. (2019). TG-MS-FTIR study on pyrolys behavior of phthalonitrile resin. Polymer Degradation and Stability. 169, 108954, 1-8. https://doi.org/10.1016/j.polymdegradstab.2019.108954.
[102] Giese, S.R, Roorda, S.C. & Patersson, M.A. (2009). Thermal analysis of phenolic urethane binder and correlation properties. American Foundry Society Transactions. 117, 355-366.
[103] Otero, M., Díez, C., Calvo, L.F., García, A.I. & Morán, A. (2002). Analysis of the co-combustion of sewage sludge and coal by TG-MS. Biomass and Bioenergy. 22(4), 319-329. https://doi.org/10.1016/S0961-9534(02)00012-0.
[104] Wang, Y.X., Wang, C.G., Wu, J.W. & Jing, M. (2007). High-temperature DSC study of polyacrylonitrile precursors during their conversion to carbon fibers. Journal of Applied Polymer Science. 106(3), 1787-1792. https://doi.org/10.1002/app.26862.
[105] Wang, S., Xing, X., Wang, Y., Wang, W. & Jing, X. (2017). Influence of poly (dihydroxybiphenyl borate) on the curing behaviour and thermal pyrolysis mechanism of phenolic resin. Polymer Degradation and Stability. 144, 378-391. https://doi.org/10.1016/j.polymdegradstab.2017.08.034.
[106] Shuttleworth, P.S., Budarin, V., White, R.J., V.M., G., Luque, R. & Clark, J.H. (2013). Molecural- level understanding of the carbonization of polysaccharides. Chemistry – A European Journal. 19, 9351-9357. https://doi.org/10.1002/chem.201300825
[107] Kissinger, H.E. (1957). Reaction kinetics in differential thermal analysis. Analytical Chemistry. 29(11), 1702-1706. https://doi.org/10.1021/ac60131a045.
[108] Akahira, T. & Sunose, T. (1971). Joint Convention of Four Electtical Institutes. Research Reports of Chiba Institute of Technology. 16, 22-31
