RESEARCH OF SOME FACTORS AFFECTING THE ADHESION, HIDING POWER, ALKALI RESISTANCE OF COPOLYME STYREN ACRYLAT PAINT

Abstract

We have investigated a number of factors that affect the properties of styrene acrylate copolymer
paint. Study on the influence of coloring agents such as TiO2, Cr2O3 on the adhesion, the hiding power,
the alkali resistance of the film... The results showed that the ratio weight of liquid glass/emulsion
mixture = 2/1 is the most suitable. Study of the composition of the paint gives the following results:
the ratio of binder and dry component in the paint mixture is 20/30 (% wt). In the dry component the
percentage of pigments/fillers = 10/20 (% wt), in which the ratio of TiO2/Cr2O3 = 3/7 (% wt).
Measurement of the properties of the coating film results: surface drying time was 54 minutes;
dry time was 275 minutes; hiding power was 169 g/m2, scrub resistance was > 1200 cycles, adhesion
was 2 point, water resistance > 1000 hours, alkali resistance > 1000 hours and heat sock resistance >
70 cycles. As a result, the membrane is made up to meet the Vietnamese standards for interior paint
production (TCVN 8652:2012).