Remote atmospheric plasma activation of the SentryGlas ionoplast interlayer for adhesion improvement
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| Year of publication | 2022 |
| Type | Conference abstract |
| MU Faculty or unit | |
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| Description | Laminated glass (LG) consists of at least two panes bonded together by some transparent elastomeric interlayer, most commonly and traditionally polyvinyl butyral (PVB). SentryGlas ionoplast interlayers are significantly stiffer than standard PVBs. Thus, laminates with SentryGlas, as a new generation of interlayer developed for high-performance applications (e.g. hurricane zones), can bear greater loads or – at the same load – can be reduced in glass thickness. However, LG with standard SentryGlas interlayers is affected by glass orientation, specifically the adhesion performance is significantly reduced when SentryGlas interlayer is combined with air side of glass sheet. This research studied the plasma surface nanomodification of SentryGlas ionoplast material for adhesion improvement and sufficient surface uniformity required for LG. Plasma modification of the ionoplast surface was done by low temperature atmospheric plasmas generated in ambient air and nitrogen using i) well-known Diffuse Coplanar Surface Barrier Discharge (DCSBD) and ii) a novel source of remote plasma based on coplanar DBD technology. The adhesion measurements of the plasma-modified ionoplast surface were performed by 180 degree peel adhesion test. The wettability was assessed by water contact measurement of sessile droplets. The surface chemistry was investigated by X-ray Photoelectron Spectroscopy (XPS). The results show that the adhesion and wettability of the SentryGlas ionoplast interlayer after the plasma treatment can be significantly improved even in a short treatment time (5 s). The XPS analysis confirmed that high surface power density DCSBD plasma actives the ionoplast surface significantly more than the novel source of remote atmospheric plasma. However, it seems that the plasma generated by the later plasma system put much less thermal load on the ionoplast surface with the same adhesion results as achieved using DCSBD. The capability of both plasma systems to carry out large area plasma nanomodification of rough SentryGlas ionoplast surface is also discussed. |
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