ANTI-CORROSIVE COATING USING RECYCLED HIGH DENSITY POLYETHYLENE FOR AUTOMOTIVE CHASSIS 机翻标题: 暂无翻译,请尝试点击翻译按钮。

会议集名/来源
Proceedings of the ASME International Mechanical Engineering Congress and Exposition 2018: IMECE 2018, Pittsburgh, Pennsylvania, USA, November 9-15, 2018, volume 12. Materials: Genetics to Structures
出版年
2019
页码
V012T11A01-V012T11A01
会议地点
Pittsburgh
作者单位
Pennsylvania State University - HarrisburgPennsylvania State University - HarrisburgPennsylvania State University - Harrisburg
作者
Joshua Bachert;A. H. M. E. Rahman;Ma'moun Abu-Ayyad
摘要
Both high corrosion costs and an over-abundance of plastic waste have significant global impacts. This research seeks to help in both areas by utilizing recycled plastic as an anticorrosive coating. Many plastic-based coatings, especially those developed in more recent years, already contain recycled content. This research, which utilizes 100% recycled high density polyethylene (HDPE) as a powder coat, will add to the increasingly sustainable catalog of anti-corrosive coatings. The HDPE was applied to mild steel samples with traditional electrostatic powder coating equipment. The coating thickness was measured using scanning electron microscope (SEM) characterized and was found to be roughly 116 μm. The SEM analysis did not reveal any porosity in the coating. The immersion corrosion test in 5% H_2SO_4 for 2-3 days showed corrosion products at the bottom of the beaker. The maximum corrosion obtained was 424.4 mills/year (mpy) after 70.45 hours of immersion and the minimum corrosion obtained was 0.0 mpy after 5.58 hours of immersion. The acid immersion tests indicated that the corrosion started from the edges and advanced towards the inner surfaces. The coating on the edges was not uniform and may be porous. The salt immersion test in 5% NaCl solution by mass showed the sign of corrosion products after 5.5 hours and increased with time. A few samples showed corrosion over 25% of the surface after 70.5 hours of immersion. This is again attributed to the fact that the edges were not coated completely. The corrosion resistance can be improved by avoiding the sharp edges on the part.
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