MATHEMATIC MODELING OF WATER-DISPERSION PAINTS COMPOSITION AND COATING PROPERTIES
UDC 667.647.22:519.876.3
KARAVAYEV T.,
candidate of technical sciences, associate professor of Kyiv National University of Trade and Economics
MATHEMATIC MODELING OF WATER-DISPERSION PAINTS COMPOSITION AND COATING PROPERTIES
Background. Mineral fillers promising among them are chalk and kaolin of Ukrainian origin has significant influence on quality formation of water-dispersion paints and coatings. Mathematical experiment planning is an effective method of optimizing the water-dispersion paints composition and forecasting performance properties of the coating, which is the purpose of the article.
Material and methods. The object of study is the highly filled water-dispersion paints of different compositions with 60 % pigment volume concentration. The simplex-lattice method of experiment mathematical planning including D-optimal plan Kiefer is applied to determine the optimal composition of the water-dispersion paints and coatings properties. Research of quality indices of water-dispersion paints and coatings properties determine according to national and international standards.
Results. By regression analysis of mathematical models was obtained compromise region of water-dispersion coatings properties: film tensile strength (Y1) – 7.50–8.50 MPa; resistance to wet abrasion (loss of coating thickness) (Y2) – 4.5–5.0 microns; whiteness by Berger (Y3) – 60.0–75.0 units; hiding power (Y4) – 100–180 g/m2. The optimum composition of mineral fillers and pigments of water-dispersion is determined by the choice of compromise on the graphics area are: the mixture of carbonates (carbonate filler for plastics + chalk grade MMC-1) – 56.1 wt. %; kaolin KC-1 Prosyana – 15.2 wt. %; titanium Dioxide Crimea TiOx-230 – 28.7 wt. %. The obtained coating at this composition of paint according to mathematical modeling will have the film tensile strength – 7.93 MPa; resistance to wet abrasion – 4.6 microns; whiteness by Berger – 70.0 units; hiding power – 145 g/m2. It was found that the experimental data of coatings performance properties differ from the results obtained by mathematical planning within acceptable error of experiment.
Conclusion. Application of simplex-lattice method of experiment mathematical planning made it possible to obtain an optimal composition of water-dispersion paints with PVC 60 % coatings from which have the compromise high performance properties.
Keywords: water-dispersion paints, fillers, carbonates, kaolin, optimization, mathematical planning, simplex-lattice method.
MATHEMATIC MODELING OF WATER-DISPERSION PAINTS COMPOSITION AND COATING PROPERTIES
KARAVAYEV T.,
candidate of technical sciences, associate professor of Kyiv National University of Trade and Economics
MATHEMATIC MODELING OF WATER-DISPERSION PAINTS COMPOSITION AND COATING PROPERTIES
Background. Mineral fillers promising among them are chalk and kaolin of Ukrainian origin has significant influence on quality formation of water-dispersion paints and coatings. Mathematical experiment planning is an effective method of optimizing the water-dispersion paints composition and forecasting performance properties of the coating, which is the purpose of the article.
Material and methods. The object of study is the highly filled water-dispersion paints of different compositions with 60 % pigment volume concentration. The simplex-lattice method of experiment mathematical planning including D-optimal plan Kiefer is applied to determine the optimal composition of the water-dispersion paints and coatings properties. Research of quality indices of water-dispersion paints and coatings properties determine according to national and international standards.
Results. By regression analysis of mathematical models was obtained compromise region of water-dispersion coatings properties: film tensile strength (Y1) – 7.50–8.50 MPa; resistance to wet abrasion (loss of coating thickness) (Y2) – 4.5–5.0 microns; whiteness by Berger (Y3) – 60.0–75.0 units; hiding power (Y4) – 100–180 g/m2. The optimum composition of mineral fillers and pigments of water-dispersion is determined by the choice of compromise on the graphics area are: the mixture of carbonates (carbonate filler for plastics + chalk grade MMC-1) – 56.1 wt. %; kaolin KC-1 Prosyana – 15.2 wt. %; titanium Dioxide Crimea TiOx-230 – 28.7 wt. %. The obtained coating at this composition of paint according to mathematical modeling will have the film tensile strength – 7.93 MPa; resistance to wet abrasion – 4.6 microns; whiteness by Berger – 70.0 units; hiding power – 145 g/m2. It was found that the experimental data of coatings performance properties differ from the results obtained by mathematical planning within acceptable error of experiment.
Conclusion. Application of simplex-lattice method of experiment mathematical planning made it possible to obtain an optimal composition of water-dispersion paints with PVC 60 % coatings from which have the compromise high performance properties.
Keywords: water-dispersion paints, fillers, carbonates, kaolin, optimization, mathematical planning, simplex-lattice method.
MATHEMATIC MODELING OF WATER-DISPERSION PAINTS COMPOSITION AND COATING PROPERTIES