Analysis of Selected Properties of Green Sands with Modified Starch-based Additives

• Autorzy: Kaczmarska K. , Grabowska B. , Drożyński D.
• Języki publikacji: EN

Abstrakty

EN

The aim of this study was the preliminary assessment the effectiveness of application of sodium carboxymethyl starch (CMS-Na) as an additives to green sands with bentonite. Two modified starches CMS-Na having a low and a high degree of substitution (DS), 0.2 and 0.9 respectively, were chosen for preparing moulding sands. Influence of modified starch with different DS on the properties of the green sand was determined based on the results of the determination: apparent density, permeability, free flowability, friability and compressive strength, tensile and shear green sands with the addition of starch. The properties of the starch without starch-based additives were compared with the properties of green sand containing in the composition of CMS-Na with different degree of substitution.

Słowa kluczowe

EN

innovative moulding material; green sand system; moulding sand; carboxymethyl starch sodium

PL

innowacyjny materiał odlewniczy; masa formierska; skrobia karboksymetylowana

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2015
• Tom: Vol. 15, iss. 3 spec.
• Strony: 127--131
• Opis fizyczny: Bibliogr. 10 poz., tab., wykr.

Twórcy

autor

Kaczmarska K.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Reymonta 23 St, 30-059 Krakow, Poland

autor

Grabowska B.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Reymonta 23 St, 30-059 Krakow, Poland

autor

Drożyński D.

• AGH University of Science and Technology, Faculty of Foundry Engineering, Reymonta 23 St, 30-059 Krakow, Poland

Bibliografia

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• [2] Beňo, J., Jelínek, P., Špirutová, N. & Mikšovský, F. (2011). Efficiency of additives of the polysaccharide type on physical properties of bentonite mixtures Archives of Foundry Engineering, 11 (1), 5–8.
• [3] Oyetunji, Akinlabi, Seidu S.O., & Opaluwa, A.I. (2013). Littlestudy on the shear strength of foundry sand cores using clay and cassava starch as binder, Daffodil International University Journal of Science And Technology, 8(2), 77-84.
• [4] Atanda, P.O., Olorunniwo, O. E., Alonge. K. & Oluwole, O.O. (2012). Comparison of Bentonite and Cassava Starch on the Moulding Properties of Silica Sand, Int. J. Mater. Chem., 2 (4), 132-136. DOI: 10.5923/j.ijmc.20120204.03).
• [5] Zhou, X., Yang, J. & Qu, G. (2004). Adhesive Bonding and Self-Curing Characteristics of α-Starch Based Composite Binder for Green Sand Mould/Core. J. Mater. Sci. Technol. 20 (5), 617-621.
• [6] Zdybel, E. (2006). The properties of potato starch preparations subjected to chemical modifications and roasting. Żywność, 4 (49), 18-31. (in Polish).
• [7] Spychaj, T., Zdanowicz, M., Kujawa, J. & Schmidt, B. (2013). Carboxymethyl starch with high degree of substitution: synthesis, properties and application, Polimery 58 (7-8), 503-630, DOI: dx.doi.org/10.14314/polimery.2013.503.
• [8] Zhou, X., Yang, J., Qu, G. (2007). Study on synthesis and properties of modified starch binder for foundry, Journal of Materials Processing Technology, 183, 407–411.
• [9] Kaczmarska, K., Grabowska, B., Drożyński, D. & Łątka, P. (2014). Analysis of the stability selected properties of polymeric binder on the example of an aqueous solution of the modified starches, Archives of Foundry Engineering, 14 (3), 25–30.
• [10] Kaczmarska, K., Grabowska, B., & Drożyński, D. (2014). Analysis of the selected properties of microwave-cured moulding sands with starch-based binders, Archives of Foundry Engineering, 14 (4), 51–54.