Investigations of the drying process of a water based paint film for automotive applications

2011 ◽  
Vol 50 (5-6) ◽  
pp. 495-502 ◽  
Author(s):  
J. Domnick ◽  
D. Gruseck ◽  
K. Pulli ◽  
A. Scheibe ◽  
Q. Ye ◽  
...  
Keyword(s):  
Paint Film ◽  
Automotive Applications ◽  
Drying Process ◽  
Water Based

scholarly journals Anticorrosion coatings based on novel acrylate binders containing MeO nanoparticles

2019 ◽  
Vol 63 (4) ◽  
pp. 153-158
Author(s):  
D. Steinerová ◽  
A. Kalendová ◽  
J. Machotová ◽  
M. Kohl
Keyword(s):  
Air Pollution ◽  
Paint Film ◽  
Film Properties ◽  
Present Contribution ◽  
Protective Properties ◽  
Mgo Nanoparticles ◽  
Anticorrosion Coatings ◽  
Volatile Organic ◽  
Water Based ◽  
Particle Shapes

Abstract Water based paints are increasingly attracting interest mainly with a view to reducing air pollution with volatile organic compounds (VOC). However, the protective properties of water-based paints are inferior to those of solvent-based paints and so new ways to increase the resistance of water-based systems are sought. The present contribution describes the preparation and testing of environmentally friendly anti-corrosion paints based on novel water-based self-crosslinking acrylate latexes containing appropriate pigments and ZnO or MgO nanoparticles at a concentration of 1.5 % (with respect to the monomers) compared to the same systems free from the nanoparticles. Both the effect of the MeO nanoparticles and the effects of the pigment species and particle shapes on the paint film properties were examined. The MeO nanoparticles were found to improve all the properties tested. The latexes with MgO exhibited the highest resistance to flash corrosion while the latexes with ZnO exhibited the highest anticorrosion resistance. Furthermore, the systems with the calcium-aluminium polyphosphosilicate based pigment were superior to all the remaining systems in this respect. It is concluded that binders with nanoparticles can be used as a basis for anticorrosion coatings provided that a suitable pigment is selected.

scholarly journals Preparation and Self-Repairing Properties of MF-Coated Shellac Water-Based Microcapsules

Coatings ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 778 ◽  
Author(s):  
Yijuan Chang ◽  
Xiaoxing Yan
Keyword(s):  
Orthogonal Experiment ◽  
Paint Film ◽  
Great Influence ◽  
Color Difference ◽  
Core Material ◽  
Wall Material ◽  
Formaldehyde Resin ◽  
Stirring Rate ◽  
Water Based ◽  
Four Levels

A self-repairing microcapsule was prepared by emulsion polymerization using melamine formaldehyde resin (MF) as wall material, and a mixture of shellac solution and water-based coating as core material. The orthogonal experiment was carried out through five factors and four levels. The effects of Wcore:Wwall, Wemulsifier:Wcore, stirring rate, Wshellac:Wcoating, Wemulsifier solution:Wcore on the output and coverage rate of microcapsules were studied. The stirring rate has a great influence on the preparation process of the MF-coated shellac water-based microcapsules. When the Wcore:Wwall is 0.8:1, Wemulsifier:Wcore is 3:100, stirring rate is 600 rpm, Wshellac:Wcoating is 1:1, Wemulsifier solution:Wcore is 9:1, the prepared microcapsules have the best shape and size. With the increase in concentration of microcapsules, the color difference and gloss of paint film decreased gradually. The tensile strength, scanning electron microscopy (SEM), infrared spectroscopy and repair effects of the paint film were analyzed. When the concentration of microcapsules was 5.0–10.0%, the comprehensive performance of the paint film was better, providing a technical reference for the self-repairing coatings.

Water based nanofluids for automotive applications

2015 ◽  
Vol 29 (8) ◽  
pp. 3417-3426 ◽  
Author(s):  
V. Srinivas ◽  
Ch. V. K. N. S. N. Moorthy ◽  
V. Dedeepya ◽  
P. A. Thompson
Keyword(s):  
Automotive Applications ◽  
Water Based

scholarly journals Preparation and Performance of Thermochromic and Self-Repairing Dual Function Paint Film with Lac Resin Microcapsules and Fluorane Microcapsules

Polymers ◽  
2021 ◽  
Vol 13 (18) ◽  
pp. 3109
Author(s):  
Xiaoxing Yan ◽  
Wenting Zhao ◽  
Lin Wang
Keyword(s):  
In Situ Polymerization ◽  
Urea Formaldehyde ◽  
Paint Film ◽  
Impact Resistance ◽  
Core Material ◽  
Wall Material ◽  
Formaldehyde Resin ◽  
Dual Function ◽  
Aging Resistance ◽  
Water Based

Microcapsules with lac resin as the core material and urea-formaldehyde resin as the wall material were prepared by in situ polymerization, and then the lac resin microcapsules and fluorane microcapsules were added into a water-based primer or topcoat, respectively, to prepare water-based coatings with dual functions of thermochromic and self-repair. The effects of different methods of adding microcapsules on the optical properties, mechanical properties, self-repairing properties, and the aging resistance of water-based paint film were investigated, so as to prepare water-based paint film with the best discoloration and self-repairing functions. The results showed that the paint film with 10.0% fluorane microcapsules in the topcoat and 5.0% lac resin microcapsules in the primer had better comprehensive properties, and the paint film changed from yellow to colorless at 32 °C, with a color difference of 68.9, hardness of 3H, adhesion grade of 0, impact resistance of 13.0 kg∙cm, and elongation at break of 20.0%. The resistance of the paint film to NaCl, ethanol, and detergent was grade 2, with slight discontinuous marks, and the resistance to red ink was grade 3, with slight marks. The lac resin microcapsules have good aging resistance, which can enhance the aging resistance of the paint film with fluorane microcapsules. The gap width of the paint film was repaired by 2.1 µm, the self-repairing rate was 12.3%, and the paint film with lac resin microcapsules had a better crack inhibition effect. The results have provided a reference for multifunctional wood coatings.

scholarly journals Self-crosslinking acrylic latexes containing nanoparticles ZnO with increased corrosion and chemical resistance of coating

2019 ◽  
Vol 63 (2) ◽  
pp. 94-99
Author(s):  
M. Danková ◽  
A. Kalendová ◽  
J. Machotová
Keyword(s):  
Chemical Resistance ◽  
Film Formation ◽  
Paint Film ◽  
Chemical Properties ◽  
Formation Mechanisms ◽  
Coating Materials ◽  
Shell System ◽  
Water Based ◽  
Acrylic Latexes ◽  
Paint Films

Abstract The requirements put on coating materials are more and more stringent mainly in the environmental domain, especially as regards VOC emissions. This is why water-based binders as alternatives to solvent-based binders, to provide paints possessing equally good use properties, are intensively sought. The objective of this work was to assess the anticorrosion and chemical properties of paint films based on new self-cross-linking acrylic latexes. The latexes were synthesized via two--step emulsion polymerisation to obtain a core-shell system. Nanostructural ZnO in an amount of 1.5 wt. % was added to the system during the latex binder synthesis. Paints with an enhanced corrosion resistance and chemical resistance of the films were prepared. The binders prepared were pigmented with anticorrosion pigments and their properties were compared to those of commercial water-based dispersions with either identical or different paint film formation mechanisms. The results gave evidence that if a well-selected pigment is used, the binders can be used to obtain anticorrosion coating materials for metallic substrates.

Research on the Mathematical Model and Air-Drying Mechanism of Water-Based Ink

2010 ◽  
Vol 174 ◽  
pp. 381-384 ◽  
Author(s):  
Chun Jiang Jia ◽  
Guang Xue Chen ◽  
Xiao Zhou Li
Keyword(s):  
Printing Press ◽  
Drying Process ◽  
Hot Air Drying ◽  
Air Drying ◽  
Hot Air ◽  
Water Based ◽  
Air Speed ◽  
Drying Efficiency ◽  
The Mathematical Model ◽  
Printing Speed

At present, we are taking more and more attention on environment protecting, food and medicine safety, and more researching and applying on green printing and packaging technique has been done abroad. Around these, water-based ink has been accepted by the market step by step, but the printing press on this area still with some problems: Lower drying efficiency and lower printing speed. To solve these problems, we analysis the hot-air drying process based on model Logarithmic. We suppose the experiment environment as follow: the temperature is 50°C, the hot air speed is 6m/s, meanwhile we suppose the experiment keep to second Fick-law: The liquid equally distributing around the solid at the beginning; during the drying process, the diffusing modulus keep steady; the resistance of external diathermanous medium is ignored and keep linear diffuse. Under this experimental condition, we record the data about the volume of liquid in the solid during the process, and then analyze the data by the software SPSS, we evaluate the model by the square of relating parameters, and then revise the model so that it can keep the same with the drying process. The model can forecast the drying rate of the water-based ink. This model can supply basal dada for the designing work of water-based ink; at the same time, it has actively influence on speedup the printing press.

scholarly journals Analysis of Drying Process of Water-Based Architectural Paints

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Gustavo Feliciano de Jesus Barcelos ◽  
Paula Duarte de Carvalho Souza ◽  
Fernando Cotting
Keyword(s):  
Drying Process ◽  
Water Based
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