What is the purpose of paint?

Paint is a kind of chemical mixture coating, which can firmly cover the surface of objects and play a special role in protection, decoration, marking and so on. And what are the painting skills? The following is what I have compiled about the usage of paint, I hope you like it!

Use of paint

I. Process flow

Treating the base course-sealing primer-frosted paper-oiling powder-coloring and repairing the base course-full batch of colored putty-polishing-oil painting and color matching-first varnish painting-putty painting-colored frosted paper painting-second varnish painting-topcoat painting.

Second, the operation process

* * *1* * Treatment of base course: scrape off dust, glue marks and rust spots on the surface with a scraper or glass sheet, and be careful not to scrape off burrs. ***2*** Sealing primer: decorative materials such as panels and lines shall be painted with varnish evenly, and * * * 3 * * sandpaper shall not be omitted: the grinding layer shall be polished along the wood grain, and all sides shall be polished first. ***4*** Grease powder: repeatedly rub the grease powder on the wood surface with cotton silk, rub the grease powder into brown eyes, then wipe it with linen or wood silk, and remove the residual powder on the corners with bamboo chips. After the oil powder is dried, use 1 sandpaper to gently polish it along the wood grain until it is smooth. Protect the corner. ***5*** base coloring and repair: the base coloring of decorative surface is determined according to the paint color specified in the model, and clear oil and varnish are used. The oil content should not be too thin, so it is better to make porridge. Rub it back and forth with a hemp head broken into 20~40cm long, including edges and corners; * * * 6 * * Full batch of color putty: the color should be lighter than the sample 1-20%, and the putty should be oily. Scrape putty into nail holes and cracks, etc. Do surgery. When scraping putty, wipe it horizontally and scrape it vertically. The putty should be scraped clean, and no loose putty should be left. After the putty is dry, use 1 sandpaper to polish it gently along the grain until it is smooth, and wipe the powder ash clean with a wet cloth. ***7*** Polishing: After the decorative base is painted and the putty is leveled, it will be polished with water sandpaper and then cleaned with cloth. Scrape the putty of the same color for the second time, which is the same as that for the first time. After scraping, fill the nail holes and missing edges and corners with putty of the same color, and require full scraping and leveling. Dry the frosted paper and smooth it. Make the wood grain clear and not wear out the edges and corners. Wipe clean and dry with a wet cloth after polishing. * * * 8 * * Oil painting color: paint quickly, paint along the wood grain, and be light when collecting pen and discharging oil, without leaving joint marks. Every picture should be painted at once, and no seams can be left. After painting, the color should be consistent, and the wood grain cannot be covered. Painting procedure is the same as lead oil. ***9*** Brush the varnish for the first time: the brush method is the same as the oil color, and the worn brush should be used. After the paint is completely dry, polish it thoroughly with old sandpaper. 1. First, basically polish off the paint surface, and then wipe it clean with a wet cloth. *** 10*** putty filling: use a horn putty board, and the putty to be colored shall be scraped clean, smooth and free of putty marks, and the paint film shall not be damaged. * * *11* * color decoration: black spots, knots, putty marks and inconsistent materials on the surface are combined into one color to draw a wood grain. *** 12*** frosted paper: gently grind it back and forth with rotating paper, and then wipe off the powder with a wet cloth. *** 13*** Apply varnish for the second and third times: the surrounding environment should be clean and tidy, and the operation should be the same as that of the first varnish, but the action should be agile, and the brush should be more rational, full, smooth and even. After the first coat of paint, the paint is dried, then the area is ground flat and wiped with a wet cloth. Next, brush a layer of paint, then polish it with water sandpaper, smooth it, wipe it clean after grinding, and repeat it three times to ensure the uniform thickness of the paint film and the isosceles grinding of the edges, corners and internal angles in place. *** 14*** Finally, paint as required.

III. Safety and Environmental Protection Measures

* * *1* * When the height is more than 2m, the inclined ladder shall be set up as required. Check before construction. The herringbone ladder used should land on the four corners and be placed smoothly. The ladder corners should be provided with anti-slip rubber pads and safety chains. Scaffolding should be laid on the herringbone ladder, and the erection length at both ends of the scaffold should not be less than 20cm, and no two people can operate in the middle of the scaffold at the same time. When the ladder moves, the operator must get down. It is forbidden to stand on stilts on ladders. People are not allowed to stand on the hinge shaft at the top of the herringbone ladder, and scaffolding is not allowed to be laid. The inclined ladder should be inspected frequently. If cracks, decay, loose wedge head and missing blocks are found, it shall not be used.

* * * 2 * * Before construction, safety education should be focused on workers and written disclosure should be made.

* * * 3 * * It is forbidden to set up a paint material warehouse on the construction site, and the paint warehouse outside the site should have sufficient fire control facilities.

***4*** The construction site should have a safety slogan prohibiting fireworks, and the site should be supervised by a full-time security officer to ensure that there is no open flame on the construction site.

***5*** Try not to leave paint materials after work every day. The remaining paint is not allowed to be dumped, and should be collected for centralized treatment. Garbage is classified and consumed according to environmental protection requirements.

***6*** Site cleaning shall be sprinkled by designated personnel, and there shall be no dust pollution. Wipe the grinding dust with a wet cloth.

* * * 7 * * Around the construction site, low-noise devices or other measures should be selected according to different noise-sensitive areas, and the construction time should be controlled according to relevant state regulations.

* * * 8 * * Operators should wear corresponding protective facilities such as gas masks, masks and gloves when painting. So as not to hurt workers' lungs, panels, etc.

Misunderstanding of paint purchase

Misunderstanding 1. Pay attention to price and ignore quality.

When many people buy wall paint, it is easy to go into the misunderstanding that price is more important than quality. Some people think that the higher the paint price, the better, so they choose the most expensive one, but the experimental results show that this is not the case. On the other hand, in order to save money, the lower the price, the better, saving a lot of money, but the wall quality and indoor environment are worrying in the future. Therefore, it is suggested that you pay attention to the quality of wall paint as much as possible after considering the price, and generally choose a big brand with good reputation.

Myth # 2: Pay attention to packaging, but ignore the inside.

When consumers buy latex paint, it is very necessary to look at the packaging often. However, it should be noted that the packaged coating is not necessarily of excellent internal quality. In order to attract customers, some manufacturers make a fuss about the packaging of products and deliberately exaggerate the efficacy of products. Therefore, consumers are advised to pay attention to other aspects besides product packaging, such as checking the detailed inspection report of products.

Myth 3: The color card is exactly the same as the wall color.

Many consumers think that the color of paint on the color card is exactly the same as that on the wall, which is a misunderstanding. Because of light reflection and other reasons, after all the four walls of the room are painted, the wall color will look darker than the color card. The color that consumers see on the color card is usually different from the actual color of the paint on the wall. Therefore, it is suggested that when consumers choose colors in color cards, it is best to choose their favorite color number with a slightly lighter color. If they like dark walls, they can adjust them to the same color as the selected color card.

Myth 4. Don't estimate the amount of paint in advance.

Many consumers did not estimate the amount of paint in advance, fearing that they would buy less, and the more they bought, the better. This may cause waste of materials, increase the cost of home improvement, and at the same time, excessive paint accumulation will also have a certain impact on construction safety. Therefore, it is suggested that consumers must see the area of the building area clearly before construction, so as to estimate the amount of materials to be purchased. A relatively simple method to estimate the amount of paint is: the amount of paint required for one layer of paint per liter * * * L * * * = * * wall area x2.5***/ paintable area.

Myth 5: tasteless and environmentally friendly.

Many people judge the safety of wall paint by smell, and think that low-odor or odorless wall paint is environmentally friendly. This is a big misunderstanding. Because odorless coatings can be realized by adding essence or using low-odor materials, not all odorless coatings are environmentally friendly and nontoxic. The most professional way to judge the environmental protection of wall paint is to see whether its environmental protection index meets the standard. There are three key environmental indicators of wall paint: VOC, free formaldehyde and heavy metals.

The function of paint

defense function

Anti-corrosion, waterproof, oil-proof, chemical-resistant, light-resistant and temperature-resistant. Exposed to the atmosphere, objects will be eroded by oxygen and moisture, leading to metal corrosion, wood decay and cement weathering. Coating a protective film on the surface of an object can prevent or delay the occurrence and development of these damage phenomena and prolong the service life of various materials. Therefore, protection is a major function of coatings.

Decorative function

Color, luster, pattern and smoothness. When objects made of different materials are coated with paints, they can get rich and colorful appearances, beautify the living environment of human beings and make a significant contribution to human material and spiritual life.

Other functions

Marking, antifouling, insulation, etc. For modern coatings, this function is more and more important than the first two functions. Some modern coatings can provide a variety of special functions, such as: electrical insulation, conductivity, shielding electromagnetic waves, anti-static generation, etc. The biochemical functions of marine organisms such as mildew prevention, sterilization, insecticidal and anti-adhesion; High temperature resistance, heat preservation, temperature indication and temperature marking, prevention of delayed combustion, ablation and heat insulation; Reflecting light, emitting light, absorbing and reflecting infrared rays, absorbing solar energy, shielding rays, marking colors and other optical effects; Anti-skid, self-lubrication, anti-fragmentation, anti-splash and other mechanical effects; It also has many functions, such as noise prevention, vibration reduction, sanitation and disinfection, condensation prevention and icing prevention. With the development of national economy and the progress of science and technology, coatings will provide and play various new special functions in more aspects. What is the function of paint?