1. The thermal insulation coating has good thermal insulation performance, and the thermal insulation effect is obvious when it is painted for 1-2 mm, and there will be no cold penetration, no condensed water, and no "hair" on the wall;
2. There are no volatile substances and VOC in the thermal insulation coating;
3. The thermal insulation coating should be waterproof and moisture-proof, and can be rubbed and washed;
4, thermal insulation coating should have a certain hardness, wear resistance, impact resistance;
5, thermal insulation coating can't have cracks, if there are cracks, it will happen through cooling, and the thermal insulation effect will be reduced by at least 5%;
6. The thermal insulation coating should be acid-resistant, alkali-resistant, anti-aging, resistant to the corrosion of oil fume, smoke dust, air and other substances, and its color and composition should not change for a long time;
7. Thermal insulation coatings should have certain sound insulation, which can be achieved by thermal insulation coatings on the market now;
8. The thermal insulation coating has good adhesion and will not fall off for a long time;
9. The service life of thermal insulation coating is equivalent to that of other building materials;
1, thermal insulation coating, beautiful appearance;
polystyrene foam board is one of the three common internal wall insulation materials. Also known as foam board and EPS board, it is a white object formed by heating expandable polystyrene beads containing volatile liquid foaming agent in a mold after pre-heating. According to the structural characteristics of fine closed pores, it is mainly used for building wall, roof insulation, composite board insulation and so on. It is divided into expandable EPS board (benzene board) and continuous extrusion XPS board (extruded board).
Advantages-
1. The polystyrene foam board has a small density coefficient and good impact resistance, and has enough ability to cushion the external impact force 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 water absorption rate is low, and its impermeability is good. The reflective heat insulation coating can effectively avoid the wall problems such as mildew and falling off after the wall is wetted.
Disadvantages-
1. The construction needs to be hung, and the construction process is complicated and the construction period is long;
2. Flammable, which produces toxic gas after combustion. 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, so it is easy to crack and the insulation layer falls off.
4. Because of its 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 maturity. If it is not fully matured, the quality will not be guaranteed, resulting in shrinkage and cracking of the foam board.
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Polyurethane 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 air or moisture in the contacted matrix to form foam.
The cured foam has many effects, such as caulking, bonding, sealing, heat insulation, sound absorption, etc. 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 holes are closed, with a sealing rate of 95%, and rainwater will not seep through the holes;
3. As a result of on-site spraying, an integral waterproof layer is formed, and there is no seam, which is beyond the reach of any polymer coiled material, thus reducing the maintenance workload;
Disadvantages-
1. At the temperature below 1℃, the foaming rate of polyurethane foam will decrease. Therefore, the use is obviously restricted by the season;
2. Polyurethane foam spray molding speed is fast, so it is not easy to make a flat spray effect, and unevenness is a normal phenomenon;
3. The flatness can be relaxed when used for roof waterproofing and thermal insulation, but the flatness of eaves gutter and gutter is not good, which will affect the drainage velocity. Therefore, it should be used in conjunction with other waterproof materials.
glass fiber thermal insulation cotton
glass fiber cotton is an inorganic non-metallic material with excellent performance, and it is also one of the three common internal wall thermal insulation materials. It is made of glass balls or waste glass through high-temperature melting, drawing, winding, weaving and other processes. The diameter of its monofilaments is several microns to twenty meters microns, which is equivalent to 1/2-1/5 of a hair strand. 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 length and high tensile performance. It is widely used in building air conditioning insulation system, decorative wall sound insulation, decorative ceiling, and equipment insulation in chemical and electric power industries.
Advantages-
1. Good heat insulation. Glass fiber cotton has numerous tiny gas holes, and the fibers are irregularly arranged, so it is an excellent heat insulation material.
2. It is nonflammable. Glass fiber cotton will not burn, has no deformation and embrittlement, can withstand the high temperature of 7 degrees, and its combustion performance reaches A1 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 will not emit toxic and pungent smoke and smell when it meets high temperature;
Disadvantages-
1. The raw material is glass, which also has the disadvantage of brittleness and easy fracture;
2, poor wear resistance. Long-term use can easily lead to damage, and once sharp objects scratch the surface, it will cause irreparable wear.
interior wall thermal insulation coating
reflective thermal insulation coating is a new type of thermal insulation material, which is a kind of space energy-saving thermal insulation coating at room temperature (space energy-saving thermal insulation coating includes ZS normal temperature type and ZS high temperature type), and it is a kind of coating that prevents heat conduction.
Reflective thermal insulation coating One-component modified inorganic water-based coating, the temperature resistance is divided into 15℃ and bone white thick slurry, and the solid content reaches over 85%. The specific gravity of Zhisheng Weihua
reflective thermal insulation coating after curing is only .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 protection and insulation.
the construction method of reflective thermal insulation coating for inner wall is almost the same as that of general wall coating. Add a proper amount of clear water, stir it into a paste, and then apply it directly to the treated wall surface. After applying it twice, it will be calendered. After it is completely dried, it will be painted with glue and glass brazing mesh tape, and then the wall surface work such as painting the top coat 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 against cold and heat, and can also prevent earthquakes and absorb sound;
2. The reflective thermal insulation coating can be cut at will, and it is packaged according to the type, which is non-toxic and environment-friendly, and does not pollute the environment and irritate the skin;
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 day and night and seasonal changes, 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 effect and can be used as a good interior wall insulation material.