Fluorocarbon paint refers to a coating material with fluororesin as the main film-forming material. It is widely used in households and has excellent performance. Today, let's take a look at the construction process of fluorocarbon paint:
Base surface treatment:
1. Base requirements
The cement mortar is plastered and smoothed. The exterior wall is required to be waterproof. The flatness of the base surface is in accordance with the requirements of high-grade plastering. The yin and yang angles are square, the lines are straight, there is no empty drum cracking, no oil rust, the moisture content of the base surface is 8%, and the PH value is 9. Exterior wall railings, window frames, pipe installation and closing and closing.
2, clean up and trim
Remove the base surface slurry and clean the higher joints and protruding points with a hand-held sander to avoid excessive thickening of the putty.
3, paste mesh
Apply a crack-resistant glass fiber mesh cloth with a thinned waterproof putty and smooth the brush. The crack-resistant glass fiber mesh has good strength and toughness and contains adhesive. The joint is not less than 100mm. The function of the glass fiber mesh is to prevent the flattening putty from being excessively cracked and the stress generated by the buffering plaster layer may be cracked.
4, slotted caulking
According to the designed aluminum plate effect, the layout of the grid is positioned, and the slit is cut by a cutting machine (generally 10-25 mm wide and 15-20 mm deep). The seams on both sides are cut, the mortar in the seam is cleaned, and the interface agent is cleaned. The Pap's flexible cement caulking material is then caulked into a concave arc shape (formed by a small round bar having a slit width). The function of the division joint is both functional (can prevent large-scale plaster cracking, joint filler has elasticity, can be waterproof), decorative (faux aluminum-plastic panel effect concave line) and construction block (convenient leveling and spraying) The role. The divisional joints require uniform arcs, horizontal and vertical, and are controlled and inspected by means of a lifting hammer and a horizontal line. The block size should be suitable, generally about 1 - 2.5 square meters per block, should take into account the facade effect and operational requirements.
5, rough putty leveling
According to the block of the division, the elastic waterproof and putty is scraped piece by piece, and the putty is scraped vertically and horizontally with the aluminum alloy scraper of the same length and width, and the second putty is to be applied after the first putty is dried. When the batch is scraped, the two people cooperate at the same time and apply even force. The lines should be straight and straight, and the yin and yang angles should be square. The rough putty is to level the pieces, the flatter the better each piece, and try to control the thickness of the putty to prevent cracking. Putty requires high bond strength, good water resistance, good construction performance, and no roll. It is better to use two-component or one-component polymer cement putty.
6, fine putty scraping
In the vertical and horizontal directions, a batch of waterproof and fine putty is scraped, and after drying, it is smoothed by sanding with a sanding machine or sanding board to remove the floating ash. The role of the fine putty is to fill the rough surface, make the base surface more flat and dense, and also repair the in place in the joint. Grinding with 240---360 mesh water sandpaper, no sand marks and joints are required.
7, polished putty (also known as oily putty)
Use a very fine polished putty to scrape the base surface one or two times. After drying, carefully grind it with water sandpaper of more than 600 mesh. It is required to be invisible and sand marks, and the hand is smooth and smooth. The role of polishing putty is to form a solid and delicate layer of putty, just like the putty used for furniture lacquer, and the paint film is full when polished. The polished putty can also be waterproof and prevent the primer from infiltrating into the base layer, saving the amount of paint.
Fluorocarbon paint construction process:
First, fluorocarbon special closed primer construction
1. Function: Block the trace moisture in the bottom layer to prevent alkaline erosion.
2, tools: air compressors, spray guns, scales, mixers, filters, etc.
3, construction methods, the number of passes and the amount of construction methods: spraying, nozzle size 1.5-2.0, pressure 0.2Mpa; construction times: 1 time.
4. Construction method: (1) The primer should be properly mixed according to the specifications, and fully stirred evenly without visible impurities. (2) Grind the surface before spraying and rinse the surface with water. Spray the water before removing it. (3) Spraying should be thin spray.
Second, fluorocarbon topcoat construction
1. Function: Provide the surface feel of the coating and the stain resistance and color resistance of the coating.
2, tools: air compressors, spray guns, scales, mixers, filters, etc.
3, construction methods, the number of passes and the amount of construction methods: spraying, nozzle size 1.5-2.0, pressure 0.2Mpa; construction times: 2-3 times
4. Construction method: (1) Match the top coat according to the proportion of the instruction manual, and stir it evenly. There is no special diluent for visible impurities. It is suitable for proper construction. Stirring must be sufficient and uniform to make the pigment evenly dispersed. The reaction is sufficient; the material is ready for use, and the unused material must be covered; the adjusted material is used up within 8 hours, and the thickened material cannot be used. (2) The prepared material should be aged for 30 minutes to make it fully reacted to achieve the best results. (3) When spraying the first coat, it should be sprayed by thin coating. (4) When spraying the second coat, the interval between the first pass and the first pass should be no less than 4 hours, and thick spray coating should be used.
Third, fluorocarbon varnish construction
1. Function: Provide metal paint coating with stain resistance and color resistance.
2, tools: air compressors, spray guns, scales, mixers, filters, etc.
3, construction methods, the number of passes and the amount of construction methods: spraying, nozzle size 1.5-2.0, pressure 0.2Mpa; construction times: 1 time
4. Construction method: Mix the low paint according to the proportion of the manual, and mix well evenly, no visible impurities. The specific amount of special thinner should be suitable for proper construction: the mixing must be sufficient and uniform to make the pigment evenly dispersed and fully reactive. The material is ready for use, and the unused material must be covered; the adjusted material can be placed for up to 8 hours, and the thickened material cannot be used;
Fluorocarbon paint construction precautions:
1. The construction temperature is 0-35 °C, and the base surface temperature is preferably not lower than 5 °C.
2, material storage should pay attention to moisture, waterproof, direct sunlight.
3, the gloss is consistent, not allowed to sag, leaking coating.
4, the amount of ingredients should not be too much, so as not to stand for a long time, leading to curing.
5, must use special special auxiliary materials, water, banana water, alcohol, gasoline, etc. are strictly prohibited.
6, in the humidity below 85%, temperature 0-35 ° C is appropriate, do not under the following conditions: rain, snow, fog, frost, high wind, or relative humidity of more than 85%.
7. The paint film after painting at room temperature can be fully cured in about 7 days. It is recommended not to use it in advance.
8. Safety measures and prevention methods: Ensure good ventilation and wear protective equipment to prevent staining of skin and eyes. If paint gets into your eyes, rinse immediately with water and seek medical advice. Fireworks are strictly prohibited in the construction environment.
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