Effects of Rice Husk Fiber Treatment on the Polishing Pad from Rice Husk Fiber Mixed with Polyurethane.
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Abstract
This research aimed to study the effects of treating rice husk fiber with hydrochloric acid and sodium hydroxide mixed with polyurethane on the properties of polishing pads. Rice husk fibers, sized to 80 mesh, were mixed with polyurethane at ratios of 0, 2.5, 5, 7.5, 10, and 12.5 parts per hundred resin (phr) to create polishing pads with a diameter of 120 mm and thickness of 5 mm for hardness testing. Abrasion resistance was assessed using cylindrical specimens with a diameter of 15 mm and height of 16 mm, while water absorption tests were conducted on 10 g samples of the polishing pads. The results indicated that polyurethane mixed with each type of rice husk treatment could be molded into a polishing pad. The hardness of the pads made from rice husks treated with hydrochloric acid and untreated husks showed no significant difference. However, the polishing pads made from hydrochloric acid-treated rice husks exhibited higher abrasion resistance and lower water absorption compared to those made from untreated husks. In contrast, polishing pads made with sodium hydroxide-treated rice husks demonstrated decreased hardness across all ratios, although their abrasion resistance and water absorption both increased. From the research study, it can be concluded that treating rice husks with hydrochloric acid improved abrasion resistance and reduced water absorption without affecting hardness.
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Articles published in Journal of Industrial Technology Ubon Ratchathani Rajabhat University both hard copy and electronically are belonged to the Journal.
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