Paint is a substance that is applied to the surface of an object to play a decorative and protective role, mainly consisting of film-forming substances, colour fillers, solvents and additives.
In China, paint, also known as paint, emulsion paint, oil-based paint, water-based paint, industrial paint and wood paint, is collectively known as paint and commonly referred to paint is mainly oil-based paint.
There are many kinds of paint construction methods, but the four main ones are brushing, rolling, spraying and dipping. Among them, brushing, rolling and spraying is the most common, and dip coating is the most used for large painting workshops.
1, Brush coating is mainly a method of construction using paint brushes for some high painting requirements, or construction should not reach the place usually using brush coating. The advantage of this method is that the painting process is meticulous, leaving no dead corners, the painting effect is guaranteed, and it saves construction materials. Still, the disadvantage is that the construction time is extended, which low efficiency.
2, Rolling coating is mainly a method of construction using a wool roller, for some construction requirements are not too high, or large area painting construction is usually used rolling method. The advantages of this method are the construction process is fast and highly efficient, technical requirements are not too high, and the application field is relatively wide. Still, the disadvantage is that the construction is easy to produce paint waste, and rolling traces are more prominent. The construction effect is not good to brush coating.
3, Spraying mainly uses high-pressure airless spray gun construction for some construction requirements. Large areas have begun to popularize spraying construction, such as wood spraying, home furnishing spraying, engineering spraying, etc., the advantages of this method are the construction process is immediate construction effect is good. The disadvantage is the high professionalism required and the need to master the airless spraying technology.
4, Dip coating is dipping the coating material into the paint for painting because it involves the immersion process, so the construction method is more often used in industrial devices. The advantage is that the construction effect is good. Whether it is a large device or a small device can achieve full coverage of the surface paint. The disadvantage is that the application area mainly involves industrial, unsuitable for home furnishing or wood painting applications. In addition, dip coating construction is easy to produce The disadvantage is that the application field is mainly related to the industry, not suitable for home decoration or wood painting applications.
The four types mentioned above of paint construction methods all have a requirement before construction. That is, you need to dilute the paint with thinner before construction. Because the thinner contains benzene, toluene, formaldehyde and other toxic substances, the human body and the environment produce significant harm, and now the application of more environmentally friendly water paint can be made without dilution, directly with water as a thinner, so the above four methods of construction can be carried out directly.
What Is The Difference Between Water-based Paints And Oil-based Paints?
1, From the perspective of environmental performance
Water-based paint is required through the water as a diluent and will not significantly damage personal physical and mental health. On the other hand, oil-based paint is through banana water and tanner water as a diluent, containing more carcinogenic substances; the impact is relatively significant.
2, Distinguish from the smell
Water-based paint does not contain toxic substances and is non-toxic and tasteless; after construction, you can arrange to move in. Oil-based paint contains an irritating odour, and it must be ventilated after construction. Only after the harmful substances are reduced to the standard can they be arranged to move in.
3, From the point of view of appearance
Water-based paint is not restored, so it is not prone to the problem of yellowing, and the service life will be longer. Oil-based paint will release harmful substances the surface very quickly appears yellowing, and the service life will be relatively short.
4, From the quality of the paint film
Water-based paint hardness, and gas film fullness, are not worse than oil-based ware, but they also can be used in a high-end home to achieve an excellent decorative effect. The quality of oil-based paint film is better, but once broken, it isn’t easy to repair.
5, From the storage point of view
Water-based paint is not easy to burn, and there are no special requirements for storage. Oil-based paint is straightforward to burn and needs to be stored separately according to the fire fighting requirements.
6, From the view of construction performance
Water-based paint construction is less complicated as long as the relevant experience can be painted, and it is very convenient. If oil-based paint, you need professional and experienced personnel to paint to avoid unnecessary trouble.
What Are The Techniques for Painting?
Before painting and between layers and layers, it is best to use suitable sandpaper to ensure the quality of the coating, generally using medium coarse sandpaper to sand first, followed by fine sandpaper to polish (above 800).
Use a scraper to scrape a scraping batch of soil or thick paint. With appropriate technology, you can get relatively satisfactory results, but avoid scraping too thick and too much round-trip scraping to avoid cracking.
The most common construction method is easy to use. Still, with low efficiency, the appearance of the coating film will appear on brush lines when painting. First, wet a towel with water and shake it dry to dip the appropriate amount of paint construction; painting when the action should be rapid, each brush piece should not move too broad to ensure that the mutual articulation has not yet Gan early. It is not easy to show a brush mark if you want to pause in the painting. Try to stop at the original combination of the wall, For example, corners, doors, windows or similar locations.
Rolling is twice as fast as Brushing. After wetting the roller first, dip the roller into the paint and apply it in a straight direction. The width of each roller is about four times the length of the roller, and using one-third overlap between roller coats can avoid the formation of apparent marks at the junction of the roller.
The best quality of the coating is a construction method, but the control of construction viscosity is essential. If the viscosity is too high, the coating will form orange peel, too low will drape, and the nozzle and the wall generally want to distance of about 30 centimetres.
Hope this article may help you. Happy painting.