000217621 001__ 217621
000217621 005__ 20180128060048.0
000217621 0247_ $$2doi$$a10.1016/j.powtec.2015.12.002
000217621 022__ $$a0032-5910
000217621 02470 $$2ISI$$a000370900900001
000217621 037__ $$aARTICLE
000217621 245__ $$aPredicting the yield stress of paraffin-wax suspensions
000217621 260__ $$aAmsterdam$$bElsevier$$c2016
000217621 269__ $$a2016
000217621 300__ $$a6
000217621 336__ $$aJournal Articles
000217621 520__ $$aAn empirical modification of the Yodel model was developed for the prediction of the yield stress of concentrated, particulate, paraffin-wax suspensions, with a solids loading in the range of 47-57 vol.%, used in the low-pressure injection moulding (LPIM). The Yodel model takes into account the volume fraction of the solids, the particle size distribution (PSD), the maximum packing, the percolation threshold and the interparticle forces. However, yield-stress prediction over a broader range of volume fractions, for systems with a low interparticle attraction (<5 kT), is difficult to achieve without fitting at least one of the parameters. Here, we adjusted the dependence of the volume fraction of solids (X) to get a better fit to the experimental data in the volume fraction range used in LPIM and introduced the characteristic median number particle size radius (R-n), which is a function of both the PSD and the shape of the particles. A practical validation of the empirical model, in terms of predicting the yield stress of paraffin-wax suspensions made from several alumina powders and one zirconia powder yielded excellent agreement with the experimental results. It is shown that it is possible to predict realistic yield stresses across the whole of the solids-loading range suitable for LPIM just by making a single yield-stress measurement for the desired volume fraction of solids in the paraffin-wax suspension. (C) 2015 Elsevier B.V. All rights reserved.
000217621 6531_ $$aInjection moulding
000217621 6531_ $$aParaffin-wax suspensions
000217621 6531_ $$aAlumina
000217621 6531_ $$aZirconia
000217621 6531_ $$aYodel model
000217621 6531_ $$aParticle size distribution
000217621 700__ $$aDakskobler, Ales$$uVall Cer Doo, Tehnoloski Pk 24, Ljubljana 1000, Slovenia
000217621 700__ $$aKocjan, Andraz$$uJozef Stefan Inst, Dept Ceram Engn, Jamova 39, Ljubljana 1000, Slovenia
000217621 700__ $$0240207$$aBowen, Paul$$g104626
000217621 773__ $$j291$$q1-6$$tPowder Technology
000217621 909C0 $$0252068$$pLTP
000217621 909CO $$ooai:infoscience.tind.io:217621$$particle$$pSTI
000217621 917Z8 $$x105410
000217621 937__ $$aEPFL-ARTICLE-217621
000217621 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000217621 980__ $$aARTICLE