Xiongsu real stone exterior wall panel
(1) Anti-alkali sealant anti-alkali seal primer is divided into different types of base layer into oily and water-based. The effect of the primer is that after the solvent (or water) is volatilized, the polymer and filler will penetrate into the pores of the base layer. Thereby blocking the capillary pores on the surface of the base layer, so that the surface of the base layer has better waterproof performance, can eliminate the efflorescence caused by moisture migration in the base layer, hair buds, etc., and also increase the adhesion of the main layer of the real stone paint to the base layer. To avoid peeling and loosening.
(2) The middle layer of real stone paint The middle layer of real stone paint is composed of aggregate, binder (base material), various additives and solvent. Aggregate aggregate includes two kinds of colored aggregate and common aggregate. Color aggregate is Natural stone is processed by multiple processes such as crushing, cleaning and screening. It has good weather resistance, acid and alkali resistance and no fading, and is non-artificial sintered color sand. Common aggregate has good whiteness and high silicon content. Quartz sand, because the natural stone powder color is relatively dim, the color is relatively dull when used alone, with a certain amount of white quartz sand and natural color stone powder used together, can adjust the color depth, so that the color tone of the coating is layered, can be similar The texture of natural stone also reduces the production cost. The particle size of the aggregate matches the construction of the real stone paint and the performance of the coating. If the aggregate particles are too thick, it is easy to precipitate in the coating. It will also increase, the amount of coating will be large, and the hiding power of the coating will decrease, the appearance of the coating will be rough, and dust will be easily accumulated; if the aggregate particles are too fine, the decorative effect will be poor. Therefore, the coarseness is adopted. The combination of fine particles not only affects the decorative effect of the coating, but also makes the coating dense. ?Binder (Binder) Binder is one of the key factors affecting the performance of real stone paint, its quality directly affects The hardness, bond strength, water resistance, weather resistance and other properties of real stone paint film. The emulsion used in real stone paint should meet the following three requirements:
A, the emulsion is stable, the formed paint film is colorless, transparent, and is not easy to yellow and chalk under ultraviolet irradiation;
B, the hardness of the coating film is high to improve the stain resistance of the coating;
C, the water absorption expansion rate of the paint film is small, forming a water-resistant and white-resistant paint film, that is, the ability to resist water absorption and whitening.
(3) The use of the cover material for the finish is mainly to enhance the water resistance and stain resistance of the real stone paint coating, the resistance to ultraviolet radiation, etc., and also facilitate the cleaning in the future. The finish paint includes the oily two-component polyurethane transparent cover paint. , oily two-component fluorocarbon transparent cover paint, water-based one-component silicone-acrylic finish paint, etc. Real stone paint intermediate layer coating formula: pure acrylic emulsion (strong bonding force, MFT higher emulsion) 30 natural color stone sand 60 auxiliaries 10 mostly do not use pure C to do the market, the cost is too high, most of them use styrene-acrylic, some high-end customers will use pure C to do, and the pure C addition of this formula is very large.
The real stone paint spraying process mainly has the following aspects:
Roman cylindrical spraying
Because it is cylindrical, it is sprayed with "M" line. The distance is about 40cm. The spray gun should be sprayed on the vertical cylinder. From top to bottom, spray one side and then turn to the other side. The steering angle is about 60 degrees.
Square column spraying
The square column has sharp edges and corners, and it is easy to blur the edges due to uneven spraying. For the convenience of spraying, the edges and corners are sprayed at a distance of about 50cm, and the spray is applied at a long distance. The fog is scattered and the area is large and uniform. If the distance is too close, slightly Attention will be sprayed thick, uneven spray, so that the angular lines will not appear, losing the overall aesthetic appearance of the original building.
Vertical surface coating
Using the circle-cut method, the distance is 30cm-40cm, and the circle is sprayed with a radius of about 15cm. From time to time, the spray gun is shaken up and down, so that the spray speed is fast and uniform, and easy to control. If one row and one row of main overlap spray is used, the speed is slow. The upper and lower intersections are difficult to control evenly, which will affect the appearance and cause paint defects.
Brick stone paint
1. First design the brick size according to the requirements, then use the wooden frame on the wall with the primer to make the brick shape, spray it, and remove the wooden frame before the surface of the real stone paint has dried.
2. Design the brick size according to the requirements, and then stick the strip or wire on the painted wall to make the brick shape. After spraying, remove the tape. Remember to take care when removing the tape, and do not affect the chamfering angle of the film. Remove tips: Pull up as much as possible, don't pull forward.
Cylindrical spraying
Modern buildings use cylindrical small gourds as railings, most of which require real stone paint, because of their small size, very decorative, and more detailed spraying process. The hoist column decorated with railings is too close. In some places, it is impossible to spray on the front side. Therefore, it is impossible to achieve the desired effect according to the general conventional spraying method. Spraying with a small nozzle, a distance of about 40cm, fast spray real stone paint, spray from the top to the bottom side, can not be sprayed on the front side, use the method of shaking the gun to make the real stone paint around it, then brush it with a brush Real stone paint, if you don't spray it, you can use a brush to slightly apply a layer; then spray it with a spray gun, not too thin, not too thick, cover the brush marks, thin can not play very good The protective effect is thicker to cover the original line beauty, and may also cause undesirable surface phenomena such as cracks.
The construction mainly involves construction equipment and requirements, construction process and construction technical indicators.
Construction equipment requirements
(1) Air compressor: The power is more than 5, the air volume is sufficient, and at least three air pipes can be used to meet the construction of three or more people at the same time.
(2), the next pot spray gun: capacity 500ml, caliber 1.3mm or more, the capacity can not be too large, otherwise too heavy, inconvenient operation, small caliber construction speed is slow, may delay the construction period, not suitable for large-area construction.
(3), real stone paint spray gun: single gun, double gun, three guns, etc., according to different colors, choose single gun for single color, double gun, multi-color with double gun, three guns, in order to adapt to different construction techniques, spray more ideal effect.
(4), various caliber nozzles: 4mm, 5mm, 6mm, 8mm, etc., according to the requirements of the model to choose different nozzles, the smaller the diameter, the smoother and evener the spraying effect, the larger the diameter, the larger the flowering point, the stronger the convex and concave feeling.
Construction process
Polish after 12 to 24 hours
Spray the bottom oil twice----- spray real stone paint 2-3mm-----spray oil twice
Construction technical indicators
UV, radiation, water, additives, pigments
(1), spray base oil: use the lower pot spray gun, pressure 4-7Kg / square centimeter, the temperature can not be lower than 10 ° C during construction, spray twice, 2 hours apart, thickness about 30 microns, dry at room temperature for 12 hours.
(2), spraying real stone paint: use real stone paint spray gun, air pressure is controlled at 4-7 kg / cm 2 , construction temperature is above 10 ° C, thickness is about 2-3 mm, if you need to apply two or three, then interval 2 hours, dry It can be polished after 24 hours.
(3), sanding: use 400--600 mesh sandpaper, gently smooth the surface of the real stone paint raised sand. Note that the force should not be too strong, otherwise it will damage the paint film, causing the bottom to loosen. In severe cases, it will cause poor adhesion and the real stone paint will fall off.
(4) Spraying surface oil: use the lower pot spray gun, the pressure is 4-7 kg/cm 2 , the construction is not lower than 10 ° C, spray twice, at intervals of 2 hours, the thickness is about 30 microns, and it takes 7 days to completely dry.
Substrate and requirements
Substrate such as cement board, wood board, gypsum board, polyurethane foam board. The surface layer of the construction substrate should be smooth, clean and have good strength. The new wall should be dried for one month before construction. The old wall should be refurbished. The base should be leveled to remove looseness, peeling off the surface and dust and grease. Construction can be carried out after impurities.
