A guide to the construction process of rock lacquer imitation stone paint

China Paint Online News Information
First, rock lacquer imitation stone paint construction process
1.base surface treatment
2. Batch scraping to find flat putty
3. Roll coating anti-alkali primer or sealing base Paint (black background or same color background
4. Trench sub-section treatment
5. Sprayed rock piece imitation stone paint
6. flattened
7. Sprayed dust cover glossy paint

process(perm)coating amount (
kg/m2
)drying time (
H
)
Construction tools Notebed surface treatment before the construction of dirt, dust and other attachments on the substation to remove, to be dry on the substation after the constructionputty construction 1-2 2.0-3.0 12lots of knives, blades, feet, etc.Find flat substratesprimer construction1 0.1-0 .125 12 rollers, wool brushes, spray guns anty-alkali sealing tracing slits according to the design of the sub-seams, playing horizontal, bouline, positioning, with color-split paper tape for protection.Rock lacquer construction 1-2 4-5 24 special spray equipment former effect shape flattening can be used hard plastic stick or pull-hair roller shape former effect grinding drying the stone paint surface with sharp corners of the material grindingCover light paint construction 1 0.10-0.125 12spray gun resist protection
II, rock paint imitation stone paint construction guide
start step substing treatment
because the condition of the substing is directly related to the construction quality of the mesoth rock sheet imitation stone paint, Therefore, before decoration, the base must be carefully checked and accepted.
The specific requirements will now be described as follows:
1) in the newly built new wall, need to be fully maintained, dry, for the old wall has been stripped by moisture, the bottom
layers of approval, before a series of spray construction.
2) The substation shall be flat and clean, and shall not be contaminated with oil, flotation or other pollutants.
3) The old paint on the old wall or other substation shall be tested to confirm its appendability;
base acceptance criteria:
1. Surface flatness: Generally requires misal position below 3mm, if more than this range needs to be polished to level.
2. No de-layering, empty drum, surface layer no cracks, wind cracking is not greater than 0.2mm, no obvious sand eye and other defects.
3. Surface layer up to advanced ash, that is, the verticality of the production surface is not greater than 3mm, the surface flatness is less than 2mm, yin and yang angle verticality is less than 2mm, square 2mm.
4. The surface must be flat, clean, uniform color, no cracks, no obvious joints, no dust, oil stains, no exposed rebar, wire, wood chips, red corners and gray line straight, clear and beautiful.
5. Angle protection, etc. in line with the construction specifications, separation seam (bar) width, depth uniform, smooth, neat corners, flat vertical.
6. Alkaline of the grass roots: the pH of the grass-roots walls is less than 10.
7. Water content of the grass-roots: the water content of the grass-roots is less than 8%, the new whitewashed mortar surface layer will take about 3 weeks to construct.
8. Surface dirt: surface dust, oil pollution, etc. to be removed with wire brush, synthetic detergent, etc., or with a coarse sand cloth polished clean, clean and polished before construction.
second step: batch scraping to find flat putty, polishing
(1) batch scraping putty should use a wipe, scraper or steel batch for construction, scraping from top to bottom. Each time putty can not scrape too thick, too thick easy to produce cracking, shedding and other ills. Usually the outer wall putty is about 0.5 to 1.0mm.(2) putty is usually scraped twice, two putty interval can not be too short, be sure to dry the first putty, and then scrape the second putty.
(3) batch scraping putty do not too much round-trip scraping, so as to avoid the appearance of roll skin, fall off or putty glue extruded, sealing the surface is not easy to dry.
(4) batch scraping putty, pay attention to the method, index finger press blade, force putty pressure into the defect, to fill, fill, the surrounding putty scrape clean, so that putty traces to minimize.
(5) after the putty is completely dry (normally 12 hours on a sunny day) with the corresponding sandpaper to smooth out and clean the dust.
The third step of external wall primer construction: (external wall anti-alkali primer or sealing primer)
painting the exterior primer is the third process in the coating structure, after painting on the putty layer to form a coating film, its emulsion particle size is very small, can deeply penetrate into the applied base. It has the following functions:
primer can quickly penetrate the substrate and putty layer inside, forming a tight seal solid isolation layer, paint film flexibility is effective to prevent external acids, alkalis, water, oil and other substances from eroding the wall, to achieve the best acidity and alkali balance, effective barrier paint film shedding, pan-alkali, paint film flowering, but also to prevent the base or putty layer growth mold external oozing and affect the external wall decoration effect. Improve the adhesion of the paint, high cover force at the same time can be used to color the paste, saving the exterior paint.suitable for outdoor substrates such as cement, masonry, concrete and other old and new walls, especially for new walls and substrates with heavier alkaline walls.
| construction ratio: see each model product specification
| brush or roll coating: add water for dilution, stirring evenly. Depending on the degree of difficulty of construction and the difference in ambient temperature can be adjusted appropriately, do not over-dilute.
| normal spray: add 5 to 10% water for dilution, stirring
| Airless spraying: Water dilution is not recommended.
the material should be quietly cooked after 10 to 15 minutes and then stirred evenly construction effect is better.
| theory painting area: 8-10m2/kg/
construction method: brushing, roller coating, spraying can be. The construction thickness (wet film) is greater than 30 m for optimal results.
construction conditions: the environment and wall temperature above 50C, relative humidity is not higher than 85%. The moisture content of the wall is less than 10% and the PH value is less than 10. The next procedure can only be carried out until the primer is completely dry.
substrate acceptance criteria:
surface visual inspection to achieve: smooth surface, flat, uniform, clean, sand-free eyes, no obvious brush marks, no leakage, etc. , the big surface look is good.
the fourth step: trench seam section construction
1. In accordance with the design requirements in the wall to play a good level, a good amount of size, with cartridges to play a good line, set a good position, paste beautiful paper for protection.
The fifth step of rock piece imitation stone paint construction:
after the can poured out to fully stir well, recommended without water dilution direct construction, if the need to add water up to no more than 3%, diluted real stone paint please do not pour back into the original packaging, should be used up as soon as possible has been opened the product. According to the requirements of the spray effect to choose the appropriate calibre gun, small-calibre spray gun 2 to 4mm, medium-calibre spray gun 4 to 6mm, large-calibre spray gun 6 to 8mm, nozzle from the wall 40 to 50cm. The air compressor pressure is adjusted to about 4 to 7 kgf during general spraying. For different shapes sprayed real stone paint process first according to the requirements of the design of specifications, and then in the wall has been painted with oil to do a good job of the required model, spray real stone paint, in the real stone paint has not dried before tearing off the paper. Spraying a large area to the grid line for the junction of construction, control spray thickness of about 4kg/m2, do not over-thick and too thin construction, to ensure that the spraying effect is consistent, so as to effectively avoid the appearance of obvious interface, thickness unevenness and color difference.conditions: the environment and wall temperature above 50C, relative humidity is not higher than 85%, wall moisture content is less than 10%, PH value is less than 10.
the quality requirements of the construction of rock
A: Spray surface flat, no hair flowers, no pan-alkali, bite color;
B:1M face, thickness consistent, uniform thickness;
C: no drops, slugs, splashes phenomenon;
D: face color consistent, no sand eyes, no scratches, no leakage,
E: decorative lines, color line dry straight,
F window and other surfaces.
Step 6 Grinding:
After drying the sheet paint, grind the stone paint surface with sharp angles (approximately 30-50%), which increases the beauty of the lacquer and reduces sharpness and avoids dust retention.
Threeth step: dust cover glossy paint construction:
main material layer completely dry through (on a sunny day generally 24 hours dry through) can be sprayed paint, air compressor air pressure requirements of more than 4kg, spray gun gun perpendicular to the wall, distance 30cm-50cm, evenly sprayed back and forth, paint generally sprayed twice. First of all, a thin and uniform spray layer, not leakage spray.can be stirred evenly, according to the water ratio or thinner used by each model, it is recommended to use spray construction, spray thickness 0. 1～0.125kg/m2。 The dry film thickness is 30 m.
quality requirements for the construction of real stone lacquered oil
A: No hair flowers, no leakage spray, gloss consistent,
B: no pendants, moles, splash phenomenon,
C: windows and other components surface clean.
III, rock lacquer imitation stone paint precautions
1 Please choose a professional rock lacquer construction team, an experienced construction team to the quality of the project plays a key role.
2 Due to the heavy and large amount of rock paint itself, the general use is the use of large packaging specifications (75KG / barrel), in long-distance transport or shelved for too long, precipitation will occur, the bottom of the barrel should be poured evenly before construction, before the factory has adjusted the construction viscosity, not recommended water dilution viscosity.3 recommended the use of hanging basket spraying, scaffolding spray will leave a construction connector, do not remove scaffolding can not be seen, after removal is more obvious.
4 Temperature: usually under 5oc above 35oc temperature conditions, humidity: suitable for construction of air humidity of 60%-70%, more than 85% and rainy days can not be constructed, to ensure that after spraying 24 can not be heavy rain, wind greater than 4 levels can not spray real stone paint.5 air compressor air pressure to reach more than 8kg, the actual amount of coating will vary due to the roughness of the substation or the use of different construction processes. The coating rate should be tested according to the conditions on site before construction.
6 On the sand loss problem when spraying: regardless of any spray will have wear and tear, the sand loss phenomenon in spraying should be based on the viscosity of construction products, construction air pressure, construction personnel techniques, etc. to determine, it is recommended to do coating rate testing before the start of the project. 7 About the phenomenon of spraying flowers: spraying flowers are more common, the phenomenon of flowering is not sprayed uniformly, especially in dark paint, spray thick place and spray thin place color is not consistent, spraying is recommended thin spray many times, multiple molding can avoid flowering. 8 About chroma: because stone paint is the use of natural colored sand raw materials configuration, so there will be a slight chroma between batches of chroma phenomenon, which is a normal phenomenon, it is recommended that the same batch of materials used in the construction of the same group of people to build on the same wall. The whole wall should be top-down, one breath into one go, to avoid intermittent construction caused by the old and new colors. Plane effects and hair effects produce sensory differences, noting that certain colors differ in backlight and positive light, direct sunlight, and refractive conditions. Repair chroma: after the construction of a wall as far as possible to leave a few barrels of the same batch of products in order to repair the defective wall during the project sweep phase, to avoid the color difference caused by sweeping the tail repair phenomenon. 9 white hair flowers: white hair flowers have two conditions, one is the concrete wall back alkali phenomenon, fingers will touch a white powder. Second, there is no such phenomenon when the hood glossy paint is not rolled, after the roll paint appears white, like fog on top, the connector is more obvious, this is due to the real stone paint surface rough uneven, rolling coating glossy paint is not rolling evenly, resulting in the surface paint accumulation in the groove will appear this phenomenon, high-gloss dust cover gloss paint recommended to use spray construction.