1, the thermal insulation coating has good thermal insulation performance, and the thermal insulation effect is obvious when 1-2 mm is painted, and there will be no cold infiltration, no condensed water and no "galling" on the wall;
2. There are no volatile substances and VOC in the thermal insulation coating.
3, thermal insulation coating should have good waterproof and moisture-proof, erasable and washable;
4, thermal insulation coating should have a certain hardness, wear resistance and impact resistance;
5, thermal insulation coating can't have cracks, if there are cracks, will occur through cold phenomenon, thermal insulation effect reduced by at least 50%;
6, thermal insulation coating should have certain acid and alkali resistance, anti-aging, can withstand the corrosion of lampblack, smoke, air and other substances, and the color and composition shall not be changed for a long time;
7. Thermal insulation coatings should have certain sound insulation, and now thermal insulation coatings on the market can do this;
8. The thermal insulation coating has good adhesion and will not fall off for a long time;
9. The thermal insulation coating has a long service life, which is equivalent to other building materials;
10, thermal insulation coating, beautiful appearance;
Polystyrene foam board is one of the three common insulation materials for interior walls. Also known as foam board and EPS board, it is a white object formed by preheating expandable polystyrene beads containing volatile liquid foaming agent in a mold and heating. According to the structural characteristics of micro closed cells, they are mainly used for building wall, roof insulation and composite board insulation. It is divided into expandable EPS board (benzene board) and continuous extruded XPS board (extruded board).
Advantages-
1, polystyrene foam board has low density coefficient and good impact resistance, and has enough ability to cushion external impact by changing and restoring its shape;
2. It has an independent bubble structure, and small area damage will not affect the whole wall;
3. Its surface has low water absorption and good impermeability. Reflective heat insulation coating can effectively avoid wall problems such as mildew and falling off after the wall is wetted.
Disadvantages-
1, the construction needs to hang the net, the construction process is complicated and the construction period is long;
2, flammable, produce toxic gas after burning. Ordinary polystyrene foam insulation board is easy to burn, and the smoke produced by combustion is toxic. Even after adding flame retardant, the flammability can only reach grade b;
3, the material strength is poor, easy to crack, insulation layer falls off.
4. Because of the limited strength and poor bearing capacity, polystyrene foam insulation board needs to be strengthened when facing bricks;
5, the quality of polystyrene foam insulation board is unstable, because the material needs to be placed for a period of time before leaving the factory, and it can only be used after a period of aging. If the curing is not complete, the quality can not be guaranteed, resulting in shrinkage and cracking of foam board.
This content is reproduced in
urethane foam
Polyurethane foam is also one of the three common internal wall insulation materials. It is a special polyurethane product filled with polyurethane prepolymer, foaming agent, catalyst and other components in a pressure-resistant aerosol can. When the material is ejected from the aerosol can, the foamed polyurethane material will expand rapidly and solidify with the air or moisture in the contact matrix to form foam.
The cured foam has many effects, such as caulking, bonding, sealing, heat insulation, sound absorption and so on. It is an environmentally friendly, energy-saving and convenient building material. But it is also a highly flammable substance.
Advantages-
1, good thermal insulation performance. Low thermal conductivity is a good material for building insulation;
2. Good waterproof performance. The foam hole is closed, the sealing rate is 95%, and rainwater will not seep out of the hole;
3. As a result of on-site spraying, an integral waterproof layer is formed without seams, which can not be achieved by any polymer coiled material, thus reducing the maintenance workload;
Disadvantages-
1, when the temperature is lower than 10℃, the foaming rate of polyurethane foam will decrease. Therefore, the use is obviously limited by seasons;
2. Polyurethane foam spray molding speed is fast, and it is not easy to make a flat spray effect, and unevenness is a normal phenomenon;
3, used for roof waterproof and thermal insulation, the flatness can be relaxed, but the flatness of eaves gutter and gutter is not good, which will affect the drainage speed. So it should be used in conjunction with other waterproof materials.
Glass fiber thermal insulation cotton
Glass fiber cotton is an inorganic nonmetallic material with excellent performance, and it is also one of the three common internal wall insulation materials. It is made of glass balls or waste glass through high-temperature melting, drawing, winding, weaving and other processes. Its monofilament diameter ranges from a few microns to more than 20 meters microns, which is equivalent to 1/20- 1/5 of a hair filament. Each bundle of fiber precursors consists of hundreds or even thousands of monofilaments.
Glass fiber thermal insulation cotton has the characteristics of good insulation, strong heat insulation, good sound absorption effect, long fiber and high tensile properties. Widely used in building air conditioning insulation system, decorative wall sound insulation, decorative ceiling, chemical power and other industries equipment insulation.
Advantages-
1, good thermal insulation. Glass fiber cotton is an excellent thermal insulation material with numerous tiny pores and irregular fiber arrangement.
2. It is nonflammable. Glass fiber cotton does not burn, deform or embrittle, can withstand high temperature of 700 degrees, and its combustion performance reaches A 1 level;
3, environmental protection and non-toxic. Because glass fiber cotton does not add any binder in the manufacturing process, it has no smell, and it will not emit toxic and pungent smoke and smell when it encounters high temperature;
Disadvantages-
1, the raw material is glass, but it also has the disadvantage of being fragile and easy to break;
2, poor wear resistance. Long-term use can easily lead to damage. Once a sharp object scratches the surface, it will cause irreparable wear.
Interior wall thermal insulation coating
Reflective thermal insulation coating is a new type of thermal insulation material, a kind of space energy-saving thermal insulation coating at room temperature (including ZS normal temperature type and ZS high temperature type), and a kind of coating to prevent heat conduction.
Reflective heat insulation coating One-component modified inorganic water-based coating, temperature resistance 150℃, bone white thick paste, solid content above 85%. Outsmart MUGUR PETRU CIUBANCAN.
After curing, the specific gravity of reflective thermal insulation coating is only 0.46g/ml, which is a new type of space energy-saving reflective thermal insulation coating with high efficiency, thin layer, thermal insulation, waterproof and mildew-proof decoration, fire prevention and corrosion prevention, and thermal insulation.
The construction method of reflective thermal insulation coating for interior wall is almost the same as that of general wall coating. Add a proper amount of water, stir it into paste, and then apply it directly on the treated wall. After painting twice, it was calendered. After it is completely dried, it is coated with glue and glass brazing mesh belt, and wall work such as painting finish can be carried out.
Advantages-
1, the reflective thermal insulation coating is light in weight, does not occupy space and area, is thin in thickness, has low thermal conductivity, can insulate heat and keep cold, and can also prevent earthquakes and absorb sound;
2, the reflective heat insulation coating can be cut at will, classified and packaged, non-toxic, environmentally friendly, non-polluting and non-irritating;
3. The reflective thermal insulation coating has no loss in construction, convenient construction, low volume density and economical cost;
Disadvantages-
Expansion cracks may occur. Due to the change of day and night and season, the external wall expands and contracts under the influence of outdoor temperature and solar radiation. When the temperature difference between indoor and outdoor is too large, the internal and external walls will shrink. This repeated change makes the wall always in an unstable state and may cause cracks. However, the interior wall is basically unaffected by this, and it can be used as a good interior wall insulation material.