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Mechanisms and mechanics of bonding in 3D printed materials systemsbased on traditional mould materials |
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| รหัสดีโอไอ | |
| Creator | 1. Solaman B. Selvaraj 2. Sarat Singamneni |
| Title | Mechanisms and mechanics of bonding in 3D printed materials systemsbased on traditional mould materials |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2565 |
| Journal Title | Songklanakarin Journal of Science an Technology (SJST) |
| Journal Vol. | 44 |
| Journal No. | 2 |
| Page no. | 393-400 |
| Keyword | 3D printing, bonding, mechanisms, mechanics, sodium silicate |
| URL Website | https://rdo.psu.ac.th/sjst/index.php |
| ISSN | 0125-3395 |
| Abstract | Common material systems used for 3D printing of sand-casting moulds are often plaster-based sand compositions withtypical limitations. Bentonite-based sand composites and associated binding mechanisms are well established in traditionalfoundry practices, but possible use of similar systems is scarce in 3D printing. The current research attempts this, consideringbentonite-sand composites of varying compositions for 3D printing and evaluating the mechanisms and mechanics of bonding.Differing amounts of ฮฑ-hemihydrate together with varying quantities of terra alba as the seeding agent are identified to beeffective together with impregnation by sodium silicate and subsequent baking at suitable temperatures. The bonding in greenstate is achieved through gypsum crystallisation and assisted by terra alba as the seeding component. Sodium silicate soaking andimpregnation increased the compressive strength notably (1.3MPa) from green (0.49MPa) and directly baked without sodiumsilicate impregnation (0.19), with almost 2.7 fold increase from the green compressive strength and 7 fold from the directly driedcase. |
