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Исследование поверхности защитно-декоративного покрытия, образованного водно-дисперсионным лаком на древесине при аэроионизации

Исследование поверхности защитно-декоративного покрытия, образованного водно-дисперсионным лаком на древесине при аэроионизации

Abstract

В статье исследовано влияние аэроионизации на шероховатость поверхности защитно-декоративных покрытий, образованных водно-дисперсионным акрил-полиуретановым лаком на древесине. Рассмотре-но влияние пленкообразователя и растворителя как компонентов лакокрасочного материала на древес-ную подложку в процессе формирования покрытия. Экспериментально подтверждено снижение шерохо-ватости поверхности защитно-декоративного покрытия, образованного при интенсификации его отвер-ждения аэроионизационным способом. Выполнено теоретическое обоснование процесса снижения шеро-ховатости поверхности и рассмотрен механизм влияния аэроионизации на электрокинетические процес-сы, протекающие в отверждаемом слое лакокрасочного покрытия на древесине. При отверждении в тон-ком слое на поверхности древесины под воздействием аэроионизации свободные молекулы растворите-ля, входящего в состав лакокрасочного материала, имеют возможность поляризоваться и выходить из слоя на его поверхность, и лишь малая их часть взаимодействует с древесной подложкой и проникает в аморфные участки целлюлозных микрофибрилл и между микрофибриллами, вызывая незначительное увеличение шероховатости.

In article to influence of aero ionization drying on a roughness of coverings protective-decorative coating on the wood, formed water-dispersive acryle-polyurethane varnish is researched. Influence of a film-former and solvent as components of a coating composition on a wood substrate in the course of covering formation is considered. Decrease in a roughness of a surface of a protective-decorative coating covering of the formed at an intensifica-tion drying by aero ionization is experimentally confirmed. Theoretical justification of process of decrease in a roughness of a surface is executed and the mechanism of influence of aero ionization on the electrokinetic processes proceeding in a cured layer of a varnish covering on wood is considered. At an curing in a thin layer on a wood surface as a result of aero ionization free molecules of solvent of the coating composition which was a part have opportunity to be polarized and leave a layer on its surface and only their small part interacts with a wood substrate and gets into amorphous sites of cellulose microfibrilla and between microfibrilla, causing not signifi-cant increase in a roughness.

Keywords

ШЕРОХОВАТОСТЬ., ROUGHNESS., ДРЕВЕСИНА, СУШКА ЛАКОКРАСОЧНЫХ ПОКРЫТИЙ, АЭРОИОНИЗАЦИЯ, ПЛЕНКООБРАЗОВАНИЕ

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold