Paste wall surface refers to the wall surface with wallpaper, wall cloth, etc., and has the following operation flow:
(1) Construction of paste-like wall surface
The wall is cemented with a cement mortar to make the wall smooth. After drying, putty putty and smooth with sandpaper, then paste the wallpaper with 107 glue or other adhesive.
(2) The main process flow of wallpaper and wall covering
Clean the base layer, fill the gap → gypsum board joint seam joint seam strip, make up putty, sanding paper → full putty, smoothing → brushing moisture-proof agent → brushing primer → wall elastic line → wallpaper immersion → wallpaper, Base layer coating adhesive → wallpaper paper cutting, brushing glue → upper wall 裱 paste, patchwork, lap joint, flower → pressure adhesive bubble → wipe the glue → trimming.
(3) 裱 裱 wallpaper, wall cloth construction points
1. When the base layer is treated, it must be cleaned, smooth and smooth. The moisture-proof paint should be evenly applied and should not be too thick.
(1) Concrete and plaster base: The wall surface is cleaned, and the surface cracks and unevenness are leveled with putty. Fill the putty again and polish it. Determine the number of putty passes as needed.
(2) Wood base: The wood base should be planed, free of burrs, sputum, and no exposed nail heads. Seams and nails are filled with putty. Full of putty, smooth and smooth.
(3) Gypsum board base: The gypsum board joints are treated with caulking putty and are fastened with seam tape. The surface is putty putty.
The primer is generally used with 107 glue, and the primer is alive, but there is no omission.
2. To prevent the wallpaper and wall covering from falling off, apply a layer of moisture-proof paint.
3. Play vertical and horizontal lines to ensure that the wallpaper, wall covering is horizontal and vertical, and the pattern is correct.
4. When the plastic wallpaper is in contact with water, the glue will swell. Therefore, it is necessary to use water to moisturize the paper, so that the plastic wallpaper is fully inflated, and the wallpaper, wall cloth, etc. of the glass fiber substrate are not stretched in water, and there is no need to moisturize the paper. Composite paper wallpapers and textile fiber wallpapers should not be boring.
5. After pasting, press the wallpaper adhesive, do not leave bubbles, and the extruded glue should be cleaned in time.
(four) matters needing attention
1. The moisture content of the wall base should be less than 8%.
2. The flatness of the wall is checked by 2 meters, and the height difference is no more than 2 mm.
3. When stitching, first match the pattern and the back seam to make the upper and lower patterns match.
4. It is forbidden to sew at the corner of the sun. The wallpaper should be wrapped over a positive angle of 20 mm or more.
5. When affixing fiberglass wall coverings and non-woven wall coverings, the adhesive on the back side cannot be brushed, and the middle enamel brushes the adhesive on the base layer. Because the wall cloth has small pores, the adhesive will be printed on the surface and the rubber marks will appear, which will affect the appearance.
(5) Acceptance criteria:
1, the paste is firm, flat, no ripples.
2, no bubbles, empty drums, cracks, curling, wrinkles or stains, no plaque when squinting.
3, wallpaper, wall cloth and hanging mirror line, paste face line and kick angle board are closely connected, there must be no gaps.
4. The splicing is horizontal and vertical, the pattern of the splicing is consistent, and the surface color is consistent.
5, do not leave the seam, do not overlap, the seam is not obvious, from the wall 1.5m away from the wallpaper, there should be no obvious seams.
Mono Calcium Phosphate ,the chemical formula is Ca (H2PO4)2.H2O, molecular weight of the body is 252.06, after dryed the product is white or slightly yellow micro powder or granules, the relative density of 2.22 (16 °C). Slightly hygroscopic, soluble in hydrochloric acid, nitric acid, slightly soluble in cold water, almost insoluble in ethanol. At 30 °C, 100 ml of water soluble MCP 1.8g. The aqueous solution was acidic, heating the aqueous solution can get calcium hydrogen phosphate. Lose crystal water at 109 °C and decomposed into calcium metaphosphate at 203°C. Applications:Monocalcium Phosphate is used to supply mineral nutrition such as phosphorus (P) and calcium (Ca) for animal, which can be easily digested and absorbed. Extensively applied as additives of Phosphorous and Calcium in aquatic animals feed.Higher water solubility of MCP is required in aquatic animals feed.
Monocalcium Phosphate (MCP)
Monocalcium Phosphate,Mcp Feed Grade,Monocalcium Phosphate Powder,Monocalcium Phosphate Granular
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