Papers by Keyword: Paints

Abstract: This article discusses one of the methods of fire protection, namely, the coating of metal structures with fire retardant paints. Intumescent coatings are currently the most widely used. Fire retardant coatings based on epoxy paints have high performance characteristics and are promising. As the foaming component, the system of ammonium polyphosphate - pentaerythritol - melamine (in a ratio of 2: 1: 1) was selected. The fire retardant properties of the developed material were investigated. Coatings on the base of the developed fire retardant paint allow us to increase own level of fire resistance of metal constructions up to three (90 minutes).

Abstract: A pigment-filler for paints is developed based on iron ore enrichment wastes i.e. tailings ferruginous quartziteenrichment (TFQ) and for dust sleeve filters while ceramsite production. The samples of powder materials having a particle size less than 50 microns were used for the experiments. The samples were prepared according to a formulation of paints and varnishes "Plant Paints Quil" (Belgorod). The samples of the primer were tested on the following parameters: dispersibility, the degree of grinding, relative viscosity, hardness, drying time, adhesion and elasticity. The results showed that the proposed pigment-filler is of the same quality as the materials traditionally used for the production of primers. Thus the proof of the possibility and prospects of using TFQ and ceramsite dust as pigments-fillers in the manufacture of paints and varnishes is evident.

Abstract: The paper deals with the evaluation of photostability of six selected transparent surface coatings applied on veneered furniture parts. It also estimates the influence factors such as exposure to natural sunlight in the interior, the length of exposure, wood species of used veneers and type of transparent coatings. The changing colour of surface treatment was evaluated on samples stored in the interior and being exposed to natural light behind the window glass for 6 months. Significant changes were occurred on surfaces treated with transparent coatings without UV absorber. During the first three months of exposure were arisen the most colour changes in transparent coatings of veneers.

Abstract: The effectiveness of corrosion protection depends on several complex processes connected with the development of the construction, such as:

Abstract: Modification of wood surface with compositions produced on the base of boric acid esters of amin-alcohols increases its polarity, decreases specific surface area and reduces water absorption of wood twice. This improves wettability of water surface and increases adhesion strength of paint coating which is the result of intermolecular forces of interaction. The latter provides increases service life of paint coating.

Abstract: Quaternary ammonium compounds are widely used as antiseptic agents, disinfectants, detergents and preservatives. In addition, quaternary ammonium compounds are often used as algaecides, and chloride dodecyl dimethyl benzyl ammonium chloride (benzalkonium chloride) is the most effective against these microorganisms. However benzalkonium chloride is not used as surface algaecide compound due its high hydrophobicity, bring on high leaching of this compound when the surface is exposed to high humidity. Currently, compounds such as diuron and s-triazine are used as algaecides, but had been detected in coastal regions in high levels concentration showing the leaching of these biocides. Then raise the necessity to develop a new algaecide to overcome the failings of leaching of the compounds used nowadays. Nanomaterial as organoclay is an excellent alternative because they have highly hydrophobic. Therefore in this work was synthesized a new nanomaterial using benzalkonium chloride, which was applied in a house paint formulation. The nanomaterial was characterized by the techniques of X-ray diffraction and thermo gravimetric analysis. The biocide capability as well as resistance to weathering of the nanomaterial was checked thought microbiological and leaching test. The new nanomaterial synthesized in this study had a high potential to be used as a microbial agent in paints.

Abstract: Electrophoretic deposition or EPD is a well established method for creating decorative and protective coatings and other structures on various electroconductive substrates. The formation of these coatings and structures can be prejudiced by the presence of oversized or contaminant particles as well as excess or contaminant electrolytes resulting in appearance and performance problems in the final product. Nuisance particles come from diverse sources and are an inevitability in industrial environments. Efficient and effective particle capture strategies are therefore essential. In water-based EPD processes, control over the content electrolytes and other continuous phase materials can be accomplished using tangential or cross-flow filtration where the permeate contains the undesirable materials and can be treated or disposed of outside the system. But for particles and other disperse phase materials, dead-end filtration techniques are required. Here the undesirable materials are captured, concentrated and retained on the filter medium within the system. Disposal only occurs as a result of discarding or treating the filter medium itself. Many types of dead-end filtration media are commercially available. Retention size and materials of construction all have relevance for system compatibility and effectiveness of particle capture. Practical experience shows that selection of the correct type of particle filtration optimises process quality. Using inappropriate filter media can be not just ineffective, but actively detrimental. This paper describes commonly available particle filter systems and how they interact with industrial EPD process.