Water-dispersion paints: the complex quality evaluation

Abstract

Background. Atthe domestic market of Ukraine there is the wide rangeof water-dispersion paints (WDPs) of different manufacturers the majority of which are paints for interior purpose. They are used for protective and decorative decoration mainly of walls and ceilings of mineral materials, wood and wooden materials, gypsum boards etc. The most important for consumers are the properties of coatings that occur during exploitation.
The aim of the article isto carry out of comprehensive comparative evaluation of the quality of the developed interior WDPs against the WDPs-analogues presented at the Ukrainian market.
Materials and methods. Object of research is WDPs that have been developed by us and domestic manufacturers and presented on the Ukrainian market, interior WDPs and obtained coatings. The research was carried out mainly by using standardized methods. The WDPs integrated quality index (IQI) calculation was carried out by the method of qualimetric evaluation of the coatings operational properties, which are crucial for consumers.
Results. The absolute values of the operational properties of interior WDPs coatings were obtained during the first stage, according to the following indicators: resistance to wet abrasion (reduce of coating thickness), microns; adhesion by cross cut test, points; boundary angle of wetting by water, deg.; elasticity, mm; tensile strength of the film, MPa; whiteness by Berger, units; yellowness index according to ASTM E313; gloss at the angle of 85°, units.
It is established that the IQI for the WDPs developed by us according to the performance properties of coatings is twice higher and more than the WDPs analogues samples.
In group 1 (Resistant to repeated wet abrasion, matte, for surfaces with high operational load) the IQI value of the WDP, developed by us (sample 9) was 1.22 which is 1.45–1.56 times higher than the samples 7, 6 and 1 that are presented on the market.
In group 2 (Resistant to repeated wet abrasion with medium gloss) the IQI value of the WDP, developed by us, (sample 10) was 1.21 versus 1.00 in sample 8 (Triora 7), which was chosen as the base sample.
In group 3 (WDPs of broad-use with moderate operational load) the IQI value of the developed WDPs (sample 11) was higher by 0.15 than sample 2 (Alpina interior, tested for years). The IQI value of the other samples was from 1.4 times lower (Dufa Mattlatex D100) till almost twice lower (Śnieźka Fresh White).
Ingroup 4 (WDPs for walls and ceilings with low operational load, economical) the IQI value of the developed WDP (sample 12) was 2.47 higher than sample 4 (Śnieźka Eco) as the baseline.
Conclusion. The WDPs integrated quality index is calculated by the level of operational properties of coatings, crucial for consumers, in different groups according to purpose and degree of operational load.
It is established that the determined IQI for the WDPs, developed by us, by the coatings performance properties within the scope of 1.13–2.47 depending on the type of WDPs and the group by purpose. These values are higher than for WDPs analogues presented on the Ukrainian market, which IQI ranges from 0.59 till 1.00.
The conducted research on the obtained data will allow consumers to reasonably choose of WDPs, which are sold on the market of Ukraine and are intended for internal protective and decorative purpose.