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Ceiling environmental indicators
According to the national environmental protection standards, radioactive levels of ceiling materials are divided into three categories: (Mainly applicable to non-metallic, non-organic ceiling materials, such as gypsum board, etc.)
1. The specific radioactivity of the natural radionuclide Radium-226, Du-232, and Potassium-40 in the decoration materials of Class A decoration materials meets the requirement of 1Ra ≤ 1.0 1r ≤ 1.3 at the same time as Class A decorative materials. A type of decorative materials production and use of unlimited scope.
2. Class B decorative materials do not meet the requirements of Class A packaging materials but at the same time meet the requirement of 1r ≤ 1.31r ≤ 1.9 as Class B decoration materials. Class B decoration materials cannot be used for the interior of a Class 1 civil building. However, it can be used for exterior decoration of Class 1 civil buildings and other interior and exterior decorations.
3, Class C decorative materials, Class A and Class B decorative materials but not meet the requirements of 1r ≤ 2.8 C class decorative materials. Class C decoration materials can only be used for exterior finishes of buildings and other outdoor uses. Note: Type I civil buildings: such as residences, elderly apartments, nurseries, hospitals and schools.
Class II civil buildings: such as shopping malls, stadiums, bookstores, hotels, office buildings, libraries, cultural and entertainment venues, exhibition halls, and public transportation waiting rooms.
The classification, purchase, installation and maintenance of ceilings are mainly made of mineral wool board, gypsum board, wood board, PVC plastic buckle board, glass and metal.
1. PVC plastic buckle plastic buckle plate â—Features It uses PVC as raw material, which has become a kind of enterprise-type profile. It has the characteristics of light weight, easy installation, waterproof, moisture-proof and anti-worm, and its surface pattern changes very much. Many, and resistant to pollution, good cleaning, sound insulation, good performance of heat insulation, especially in the new process by adding fire-retardant materials, so that it can be extinguished from the fire, use more secure. It has a low cost and a good decorative effect. Therefore, it occupies an important position in the home decoration ceiling materials and becomes the main material for the ceilings of bathrooms, kitchens, toilets, balconies and so on.
â— Quality Assurance When purchasing PVC ceiling materials, you must ask the dealer for a quality inspection report and product monitoring certificate. Visual appearance quality The layout should be smooth, no cracks, no bumps, can be assembled and disassembled freely, the surface is shiny, no scratches; In the inspection test report, the product performance indicators should meet: heat shrinkage rate is less than 0.3%, oxygen index is greater than 35%, softening temperature is above 80 degrees Celsius, flash point is above 300 degrees Celsius, water absorption is less than 15%, moisture absorption rate is less than 4%.
â— The installation should firstly pop up the elevation line on the wall, fix the pressure lines at both ends of the wall, and fix it firmly with cement nails to the wall surface. The plate is cut to the actual size of the ceiling. The plate is inserted into the bead. The slats are flush with the outside of the slats. After the installation is straightened, the nail is fixed and the second plate is inserted. . . . . . . The last piece should be cut according to the actual size. When cutting, use a sharp knife and press the elastic wire with a steel rule to cut it. When it is slightly bent, it can be inserted into the mouth of the upper plate, and then the two sides of the bead are sealed.
â—Maintenance and replacement
PVC ceiling type material has strong water resistance and scrub resistance. After daily use, it can be scrubbed with cleaning agent and washed with clean water. The gaps between boards are vulnerable to oil contamination. After cleaning, brush and cleaning agent can be used to scrub and rinse with clean water. Do not touch the lighting circuit. If the PVC suspended ceiling profile is damaged, it is very convenient to update. As long as one end of the bead is removed, the panel is removed from the bead piece by piece, the damaged panel is replaced with a new one, and then the new one is pressed again. The color of the board and the old board need to be the same, do not have color.
2, metal products ceiling metal products, ceiling refers to a set of multi-functional, decorative in one of the ceiling metal decorative panels. Compared with traditional materials, in addition to maintaining its characteristics, the texture and decorative feeling are better, and can be divided into sound-absorbing panels and decorative panels (without openings). The sound absorption board is based on the principle of acoustics and utilizes a variety of metal with different perforation rates to eliminate noise. The hole type has different hole types such as round holes, square holes, oblong holes, rectangular holes, triangular holes, and size combination holes according to needs. The floor is mostly white or aluminum. Another kind of metal decorative board, with special emphasis on decorative, the lines are simple and smooth, beautiful shape, elegant color, bronze, gold, red, blue, milky white and other colors; specifications exactly match the width of ordinary houses, and marble, Aluminum alloy doors and windows and other materials are seamlessly connected, elegant and gorgeous, icing on the quiet room environment.
The material types of metal decorative plates include aluminum, copper, stainless steel, and aluminum alloys. The decorative plates of copper and stainless steel materials are of higher grades and higher prices. The general living room is decorated, and the aluminum gold decorative plates are more suitable for people's general shopping. Psychology, that is, inexpensive. Specifications are rectangular, square, etc., the largest rectangular plate size 600mm × 100mm × 0.5mm, the general room width of about more than 5m, the decoration of larger rooms, the use of long strips of the overall integrity of the plate; decoration of the small room Generally, 500mm×500mm can be selected. Because of the poor thermal insulation performance of the metal plate, in order to obtain a certain sound absorption and heat insulation function, when selecting the metal for ceiling decoration, thermal insulation and sound absorption products such as glass wool and rock wool can be used to achieve thermal insulation. Absorption function. In particular, residents living on the top floor can improve the indoor environment after decorating and obviously save air-conditioning energy consumption costs.
3, gypsum board ceiling gypsum board is currently widely used a class of new types of ceiling decoration materials, has a good decorative effect and better sound absorption performance, the more commonly used gypsum decorative panels and paper decorative acoustic panels.
Casting gypsum decorative board has the characteristics of light weight, moisture resistance, no deformation, fire prevention, flame retardant and so on. It also has the advantages of convenient construction, good processing performance, sawing, nailing, planing, and bonding. The main varieties are: all kinds of flat plates, pattern embossed plates, semi-perforated plates, full perforated plates, waterproof boards and so on. Pattern embossed panels are suitable for the living room, bedroom, study ceiling of the living room: waterproof boards are used in places with high humidity, such as kitchens and bathrooms.
Paper machine decorative sound-absorbing panels have the characteristics of fire prevention, sound insulation, heat insulation, good anti-vibration, and convenient construction.
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How to choose ceiling decoration
Ceiling is a technique often used in interior design. People's eyes often contact with it for more time. Therefore, the shape and artistic treatment of the ceiling obviously affect the space effect.