This study aimed to enhance both the dispersion stability and recyclability of micron-sized ceria slurry in glass polishing by incorporating polyacrylic acid (PAA). PAA with a molecular weight of 240 k was very effective as a dispersant for ceria slurry due to its unique surface adsorption and its characteristics as an anionic polyelectrolyte. Using a 240 k-PAA concentration of 1.0 wt% led to significant improvements in polishing performances, as demonstrated by consistent glass removal rates across recycling cycles. Additionally, the study investigated the physico-chemical properties of polishing slurries, such as specific gravity, particle size, zeta potential, and pH. These properties were effectively maintained with the use of PAA as the dispersant, particularly when KOH was used as a pH adjuster. A 100 µm bag-type filtration system was also introduced for handling the micron-sized ceria slurry, highlighting its practical benefits in slurry management. In conclusion, employing 240 k-PAA as a dispersant in micron-sized ceria slurries for Gorilla glass polishing not only maintains quality and stability across recycling cycles but also provides notable economic advantages by enabling the recycling of the slurry.

中文翻译：

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用聚丙烯酸增强二氧化铈浆料的分散稳定性和可回收性，以改善玻璃抛光性能

本研究旨在通过掺入聚丙烯酸（PAA）来提高微米级二氧化铈浆料在玻璃抛光中的分散稳定性和可回收性。分子量为 240 k 的 PAA 由于其独特的表面吸附性及其作为阴离子聚电解质的特性，作为二氧化铈浆料的分散剂非常有效。使用浓度为 1.0 wt% 的 240 k-PAA 可以显着改善抛光性能，整个回收周期中玻璃去除率保持一致就证明了这一点。此外，该研究还调查了抛光浆料的物理化学性质，例如比重、粒径、zeta 电位和 pH 值。使用 PAA 作为分散剂可以有效地保持这些特性，特别是当使用 KOH 作为 pH 调节剂时。还引入了 100 µm 袋式过滤系统来处理微米级二氧化铈浆料，凸显了其在浆料管理方面的实际优势。总之，采用 240 k-PAA 作为微米级二氧化铈浆料中的分散剂进行大猩猩玻璃抛光，不仅可以在整个回收周期内保持质量和稳定性，而且还可以通过浆料的回收提供显着的经济优势。