Structural and Performance Optimization of Environmentally Friendly Phenolic Resin/Polyvinyl Alcohol/Pure Terephthalic Acid/Silicone Carbide (PF/PVA/PTA/SiC) Porous Composite Grinding Wheels Prepared via Freeze-Drying Methodology DOI Open Access
Xudong Song, Xuexue Li, Congcong Zhao

et al.

Polymers, Journal Year: 2025, Volume and Issue: 17(6), P. 758 - 758

Published: March 13, 2025

The traditional preparation of polyvinyl alcohol (PVA) grinding wheels typically involves hazardous chemicals such as formaldehyde and hydrochloric acid, posing significant health risks to operators contributing environmental pollution. In this study, we utilized the freeze-drying method fabricate PVA wheels, optimizing both manufacturing process structure porous composite materials. results demonstrate that phenolic resin (PF) participates in constructing a hydrogen-bonded network with pure terephthalic acid (PTA), which synergistically enhances esterification efficiency between PTA PVA. Furthermore, incorporation crosslinking agent led more concentrated pore distribution, reducing average size while enhancing mechanical strength. duration 42 h 10% solid content solution yields favorable comprehensive porosity performance wheel unique bimodal exceeding 50%. maximum ratio was achieved at 0.81, surface roughness (Sa) 0.308 μm. approach significantly uniformity adjustability, producing superior properties consistency. This study presents novel environmentally friendly alternative fabrication methods.

Language: Английский

Structural and Performance Optimization of Environmentally Friendly Phenolic Resin/Polyvinyl Alcohol/Pure Terephthalic Acid/Silicone Carbide (PF/PVA/PTA/SiC) Porous Composite Grinding Wheels Prepared via Freeze-Drying Methodology DOI Open Access
Xudong Song, Xuexue Li, Congcong Zhao

et al.

Polymers, Journal Year: 2025, Volume and Issue: 17(6), P. 758 - 758

Published: March 13, 2025

The traditional preparation of polyvinyl alcohol (PVA) grinding wheels typically involves hazardous chemicals such as formaldehyde and hydrochloric acid, posing significant health risks to operators contributing environmental pollution. In this study, we utilized the freeze-drying method fabricate PVA wheels, optimizing both manufacturing process structure porous composite materials. results demonstrate that phenolic resin (PF) participates in constructing a hydrogen-bonded network with pure terephthalic acid (PTA), which synergistically enhances esterification efficiency between PTA PVA. Furthermore, incorporation crosslinking agent led more concentrated pore distribution, reducing average size while enhancing mechanical strength. duration 42 h 10% solid content solution yields favorable comprehensive porosity performance wheel unique bimodal exceeding 50%. maximum ratio was achieved at 0.81, surface roughness (Sa) 0.308 μm. approach significantly uniformity adjustability, producing superior properties consistency. This study presents novel environmentally friendly alternative fabrication methods.

Language: Английский

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