(1) varnish construction technology:
Polishing the base (cleaning the wood surface → polishing with sandpaper, smoothing and polishing, and cleaning with wet cloth); Brush the varnish for the first time (with thinner, the paint film dries quickly); Blow putty for the first time and polish it with sandpaper (putty repairs nail holes and gaps); Brush the varnish for the second time and polish it with fine sandpaper; Brush the varnish for the third time and polish it;
Wooden at least 5 times, polished with water sandpaper, waxed and polished. Note: interval until dry. 6 hours in summer and 24 hours in winter. Keep the site clean and free of dust. The temperature is above 5 degrees Celsius.
(2) Construction technology of mixed color paint:
Polishing the base (cleaning the dust on the surface of the base, repairing the base and leveling with sandpaper); First scraping putty (mixed putty, varnish, gypsum and powdered water 3:6: 1)→ grinding → brushing primer (main paint: curing agent: diluent 1:0.5: 1, primer thickness about 1 cm, drying for 4 hours) →
Polishing with fine sandpaper → painting topcoat (topcoat: curing agent: thinner 1:0.5: 1, curing agent increases paint adhesion, thinner increases drying, too thick for construction, too thin for poor adhesion) → filling putty → polishing and wiping topcoat for the third time → brushing topcoat for the third time → polishing and waxing.
2. Key points of construction
Code for construction of oil cleaning and paint polishing Primer is an important process of painting. First of all, remove the dust, oil stains and other impurities on the wood surface. Lubricating oil powder is also an important process of varnish painting. During construction, cotton silk is dipped in oil powder and coated on the wood surface, rubbed back and forth by hand, and the oil powder is rubbed into the wood eye. When brushing clean oil, you should hold the oil brush easily and naturally, and use your fingers gently, so as not to loosen or drop the brush when moving.
When painting, it should be carried out according to the requirements of dipping more times, dipping less oil every time, diligent operation and smooth brushing, and the construction should be carried out according to the operation methods of first up and then down, first difficult and then easy, first left and then right, first inside and then outside, and horizontal and vertical brushing.
Code for Construction of Mixed Oil on Wood Surface When dealing with the grass-roots level, in addition to cleaning up the sundries at the grass-roots level, local putty should be added and polished along the grain with sandpaper. Before painting the top coat, seal the knots and wood resin with lacquer flake (shellac paint).
Drying oil or berth clearing should be applied at the grass-roots level, and drying oil layer should be evenly applied to all parts, without brush leakage. After the priming oil is completely dried, scrape the putty for the first time, polish it with manual sandpaper after drying, and then fill in the high-strength putty. Putty shall be based on not picking silk. When painting the top coat, it should be polished with fine sandpaper first.
3. Preventive measures
(1) The base treatment shall be constructed as required to ensure that the surface coating will not fail.
(2) Clean up the surrounding environment to prevent dust from flying.
(3) Because the paint has certain toxicity and strong stimulation to respiratory tract, attention must be paid to ventilation during construction.
Latex is the main coating for plastering surface of indoor panels.
Basic treatment of board surface and plastering surface:
First use a shovel to remove impurities such as ash and bumps on the plastering surface, and then use a brown brush to clean up the dust and dirt on the surface. After the surface is cleaned, level it with putty. After the putty is dry, first scrape off the excess putty with a shovel, and then polish it with 1 sandpaper.
Flat-fell seam of board face is generally bonded with slit tape. Brush the nail tail with antirust paint and smooth it with gypsum putty. Fill the internal corners with putty, and paste the coating on the seam panel and plastering surface: cleaning → filling the gaps, locally scraping putty → smoothing → first scraping putty → smoothing → second scraping putty → smoothing → third scraping putty → priming → first painting → filling putty → smoothing → second painting → third painting.
Complete putty scraping and polishing:
When filling the large gaps in the interior painting surface, scrape the latex putty with batch embedding tools, scrape all the tiny sand holes and shrinkage cracks, make them dense, flat and tidy, and lay them horizontally at the same time.
Cross-scrape the wall, scrape as thin as possible, without leakage, and leave no gaps at the joints. Be careful not to dirty doors, windows and other surfaces. Scrape putty three times in turn. After the putty is completely dried, wrap it on a flat sand rack with 1 sandpaper, and polish the putty residue and uneven place. Pay attention to the uniform force and protect the edges and corners. After grinding, clean the ingredients with a brown broom.
The first coating:
Before the first brushing, the base surface must be cleaned and the floating ash must be wiped off. When painting, roller coating should be used. Generally, the order of painting is from top to bottom, from left to right, first horizontal and then vertical, then edges and corners and facets, and then big facets.
There shall be no residual paint in the internal corner, and there shall be no edges and corners in the external corner. If the wall can't be painted from top to bottom at the same time, it is necessary to operate at multiple levels from top to bottom and cooperate with each other to avoid overlapping after painting. Apply the same batch of paint to the independent surface every time, and finish it at one time.
Repair putty: after each coating is thoroughly dried, it should generally be inspected. If there is any defect, it should be repaired locally and scraped off with a claw to avoid damaging the paint film.
Polishing: After the repaired putty is completely dried, polish the coating surface with fine sandpaper, with light and even force, so as not to break the paint film. After grinding, the surface should be cleaned.
The second brushing method is the same as the first one.
Extended data:
way
Steps:
Clean up the grass-roots level → fill putty, locally scrape putty and smooth it → first full blow putty and smooth it → second full blow putty and smooth it → brush the sealing primer → brush the first paint → fill putty and smooth it → brush the second paint → polish it.
Method:
1, base treatment is the key link to ensure the construction quality, in which ensuring the wall to be completely dry is the most basic condition, and it should generally be placed for more than 10 days. The wall must be smooth, and the putty must be scraped at least twice to meet the standard requirements.
2. The construction method of latex paint brushing can be hand brushing, roller coating and spraying. When brushing, you should operate continuously and quickly, and brush it all at once.
3, besmear brushs emulsioni paint should be uniform, can't have the phenomenon such as brush leakage, flow attached. Brush it and polish it again. Generally, it should be more than twice.
Precautions:
1, putty should be compatible with the coating performance, solid and firm, and shall not be pulverized, peeled or cracked. Use waterproof putty in wet places such as toilets.
2. The coating liquid should be fully stirred. If the viscosity is too high, it should be added appropriately. If the viscosity is too small, a thickener should be added.
3. The construction temperature is higher than 10 degrees Celsius. There can't be much dust in the room. It's best to avoid rainy days.
References:
Baidu encyclopedia-furniture paint