An open-source surface barrier discharge plasma pretreatment for reduced cracking of outdoor wood coatings

Abstract

The development of a simple surface barrier discharge plasma device is presented to enable more widespread access to and utilization of plasma technology. The application of the plasma device was demonstrated for pretreatment of wood prior to application of protective coatings for outdoor usage. The coatings' overall performance was increased, showing a reduction or absence of cracking due to weathering on plasma-pretreated specimens. Moreover, after ten months of outdoor weathering, the plasma-pretreated specimens showed fewer infections with biotic factors and improved adhesion performance in cross-cut tests, while the surface gloss performed independently from plasma pretreatment. In contrast to that, plasma-pretreated specimens were slightly more prone to discoloration due to outdoor weathering, whereas the plasma pretreatment did not impact the initial color after coating application. Graphic abstract

Atmospheric plasma treatment of rubber and its effect on surface characteristics

“…Plasma source operating in diffuse coplanar surface barrier discharge (DCSBD) represents a suitable and environmentally friendly technique but remains an active way of materials treatment. Plasma based on the DCSBD discharge is one of the non-isothermal atmospheric pressure plasma [1] sources often used for treatment of dif-ferent types of materials such as glass [2,3], films [4], biomaterials [5][6][7][8] and fibers, but also finds an objective application in treatment of polymeric material surface [9], while enables the treatment at large surface areas, according to the electrode dimensions within high speed of process and still maintains producing homogenous in-line source of plasma [10][11][12][13][14]. In the last few years, the plasma working at the atmospheric pressure is more preferred than low pressure plasma, due to its easier industrialization and faster plasma-chemical processes [3,15].…”

“…In compliance with the higher power of the plasma reactor, the DCSBD discharge becomes more diffuse and therefore more homogenous, still it is formed by several micro discharges [8,23,24,26,27]. In connection to the power of discharge itself, the highest advantage of DCSBD is its high-volume density of electric power [23,24,26,27].…”

Ionization wave propagation and cathode sheath formation due to surface dielectric-barrier discharge sustained in pulsed mode

“…In the surface discharge case, there is at least one path along which the two electrodes may be reached through the dielectric barrier only. This concept attracts interest for a large variety of fields, including medicine [17][18][19][20][21], material processing [22][23][24], flow field control (plasma actuators) [25][26][27], aerodynamic propulsion [28][29][30][31], assisted combustion [32][33][34][35], icing control [36][37][38], ozone generation [39][40][41][42], environment [43][44][45], and agriculture [46,47], just to name a few.…”

Crack formation in natural and pressure-modified silver birch (Betula pendula Roth) wood: the effect of the internal friction index under the influence of external disturbances

“…Кроме того, наличие трещин в древесине может резко снижать эстетическое свойства материала, который используется в отделке или декоративных целях, например, при производстве мебели и полов. По этой причине выбор качественной древесины, без трещин крайне необходим для последующей ее сохранности, эксплуатации и увеличения срока службы [1].…”