Effect of Dispersant Addition on Properties of Ceramic Pieces from Kampung Dengir, Besut, Terengganu, Malaysia

Abstract:

The abundancy of ball clay can be transform into more useful form. This study was conducted to investigate the effect of different amount of dispersant on ceramic system. Ball clay from Kampung Dengir, Besut, Terengganu was used as starting powder while sodium silicate was used as dispersant to produce good flow ability, minimum viscosity and controllable ceramic slurry. Ceramic slurry was prepared by adding additives such as binder, flux, filler and dispersant, casted onto POP mould to obtain ceramic body. Ceramic then cut into test pieces (8cm x 2cm) and mixed for 2 h and aged for 2 days before dried at 70 °C overnight and sintered at temperature of 800-1200 °C in furnace for 2 h with heating rate 5 °C/min. Slurries also tested for rheological properties using rheometer (brand Thermo Haake). Viscosity and shear stress were measured to investigate the rhoelogical behaviour of slip with different amount of dispersant (0.03 mL to 0.06 mL/200 mL of sample). Characterization of raw samples has been done using X-ray diffractometer (XRD) showing the presence of kaolinite and quartz. Effect of dispersant on rheological behavior, rate of shrinkage, water absorption, porosity and density were investigated It was found that increase in amount of dispersant added exhibit the best rheological behavior, and 0.05 mL dispersant was the optimum amount in term of rate of shrinkage, water absorption, porosity and density. As a conclusion, 0.05 mL was the optimum dispersant which gives best rheological behavior and almost fault-free ceramic bodies

• Periodical: Materials Science Forum (Volume 888)
• Pages: 28-32
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.888.28
• Online since: March 2017
• Authors: Noor Asliza Ismail Adnen, Nur Atiqah Azwa JOULME MORAD, Mohd Aidil Adhha Abdullah, Mohd Al Amin Muhamad Nor*
• Keywords: Ball Clay, Dispersant, Rheological Behavior, Sodium Silicate

References

[1] N.D. Said, C.H. Loh, L.H. Teoh, Kajian susulan lempung bebola di Kampung Dengir, Besut, Terengganu. Laporan projek Mineral Perindustrian Semenanjung Malaysia No. IM04/94 Jabatan Penyiasatan Kajibumi Malaysia. (1994).

[2] S. Dhara, P. Bhargava, Influence of nature and amount of dispersant on rheology of aged aqueous alumina gel casting slurries, J. Am. Ceram. Soc. 88 (3) (2005) 547-552.

DOI: 10.1111/j.1551-2916.2005.00122.x

[3] Y. Lv, W. Zhang, J. Tan, Y. Sang, H. Qin, J. Hu, L. Tong, H. Liu, J. Wang, R.I. Boughton, Dispersion of concentrated aqueous neodymia–yttria–alumina mixture with ammonium poly(acrylic acid) as dispersant, J. Alloys Compd. 509 (2011) 3122-3127.

DOI: 10.1016/j.jallcom.2010.12.016

[4] K. Nagata, Rheological behavior of suspension and properties of green sheet: Effect of compatibility between dispersant and binder, J. Ceram. Soc. Japan. 100 (1166) (1992) 1271-1275.

DOI: 10.2109/jcersj.100.1271

[5] C. Zha, H. Sun, Effects of surfactants on the release speed of a bubble from hydrocarbon oil, J. Colloid Interf. Sci. 162 (1) (1994) 52-58.

DOI: 10.1006/jcis.1994.1007

[6] T.J. Schmitt, M. Tomiyama, M.V. Folgueras, F.L. Bahr, Synthesis of inorganic pigments from glass-ceramics of system Li2OZrO2-SiO2 and waste from metallurgical industry. J. Mater. Sci. 727-728 (2012) 1308-1312.

DOI: 10.4028/www.scientific.net/msf.727-728.1308

[7] I. Johari, S. Said, B. Hisham, A. Bakar, Z.A. Ahmad, Effect of the change of firing temperature on microstructure and physical properties of clay bricks from Beruas (Malaysia), Sc. Sinter. 42 (2010) 245-254.

DOI: 10.2298/sos1002245j

[8] A. Norhayati, M.Z. Nurhanna, Effect of sintering temperature on membrane properties of Sayong ball clay, J. App. Mech. and Mater. 315 (2013) 349-353.

DOI: 10.4028/www.scientific.net/amm.315.349

[9] S. Zhou, B. Jiang, B., Pang, H., Wang, B. Liao, RAFT polymerization of poly (acrylic acid-co-maleic anhydride) as dispersant for raw ceramic suspension, J. Ceram. Process. Res. 14 (3) (2013) 415-418.

[10] S. Mohanty, B. Das, S. Dhara, S, Poly(maleic-acid) – A novel dispersant for aqueous alumina slurry, J. Asian Ceram. Soc. 1 (2) (2013) 184-190.

DOI: 10.1016/j.jascer.2013.05.005