Polystyrene foam board
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).
superiority
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 water absorption is low, and its impermeability is good, which can effectively avoid wall problems such as mildew and falling off after the wall is wetted;
4, not affected by temperature. At high temperature, polystyrene foam board will not melt and flow because of too high temperature, nor will brittle fracture occur because of too low temperature at low temperature;
5. Polystyrene foam is a recyclable material, which can be recycled, and its recycling degree is the highest among plastics;
6. Freon is not used in the production process;
7. The energy consumption in the whole life cycle is the lowest among plastic products.
disadvantaged
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.
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.
superiority
1, good thermal insulation performance. Thermal conductivity is 0. 025 or so, it is a good material for building insulation;
2. Good waterproof performance. The foam hole is closed, and the sealing rate is 95%? Rain 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;
4. Good adhesion. Can be bonded with wood, metal, masonry, glass and other materials very firmly, not afraid of being exposed to strong winds;
5. It is very suitable for the maintenance of new roofs or old roofs, especially for the repair of old roofs. There is no need to remove the original waterproof layer and insulation layer, just remove the dust and sand impurities on the surface and spray;
6. The construction is simple and quick. Each worker can spray more than 200 square meters every day, which is conducive to grabbing progress;
7. The sealing head has a simple structure. Spray foamed polyurethane closed head, without special treatment, greatly simplified. If coiled material is used, a groove should be left at the parapet, and the end should be in the groove; If you can't leave the groove, you need to seal your head with a flat iron and apply caulking paste;
8. Good economic benefits. If the insulation layer and waterproof layer are separated, not only the cost is high, but also the construction period is long, and the foamed polyurethane can survive once;
9, good aging resistance. According to foreign engineering summary and research test, the aging resistance of polyurethane foam can reach 30 years.
disadvantaged
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 and weaving. Its monofilament diameter ranges from several microns to more than 20 meters microns, which is equivalent to a hair? 1/20- 1/5? 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.
superiority
1, good thermal insulation. Glass fiber cotton has numerous fine pores, irregular fiber arrangement and thermal conductivity of 0.03w/cm.k, which is an excellent thermal insulation material.
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;
4. High insulation. Because the raw material used in glass fiber cotton is glass, which is not conductive, it has quite high insulation;
5, corrosion resistance. Glass fiber is not afraid of strong acid and has strong corrosion resistance, and its functional characteristics will not be reduced even after long-term use;
6. Good responsiveness. Glass fiber contains numerous fixed air pockets, has excellent resilience, is not afraid of any impact and vibration, and its tensile strength is above 1.0kg.
7, do not absorb water. The moisture absorption rate of glass fiber is usually close to zero, so there is no need to worry about wet cracking caused by water absorption and expansion.
disadvantaged
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
Interior wall thermal insulation coating is a new type of thermal insulation material, which is composed of high-quality natural mineral magnesium silicate, chemical additives and high-temperature adhesive. It is made by pulping, molding, setting, drying, finished product and packaging. It integrates a closed micropore structure and an alkali-resistant glass fiber mesh fabric structure, can be used for a long time within the use temperature range, is not easy to age and deteriorate, is non-toxic and tasteless, and has long-term heat preservation performance.
The construction method of interior wall thermal insulation coating 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 bonded with glass brazing mesh belt, and then the wall work such as putty scraping can be carried out.
superiority
1, light weight, low thermal conductivity, cold and heat insulation, earthquake resistance and sound absorption;
2, can be cut at will, according to the packaging type, does not pollute the environment, does not irritate the skin;
3, the structure is undamaged, molding is adopted, the volume density is low, and the cost is economical;
4, no volatile matter, no VOC, non-toxic, harmless, green and environmentally friendly paint.
disadvantaged
1, thermal bridge cannot be eliminated. Internal thermal insulation can not stop the thermal bridge formed by beams, transverse walls and columns in the wall, and can not eliminate the heat loss caused by the existence of thermal bridge, so the thermal insulation performance is poor. Due to the difficulty of thermal bridge insulation treatment, condensation and condensation are easy to occur. However, the soaking or freezing and thawing of dew can easily lead to mildew and cracking of the insulation wall, which will deform the wall and affect the durability and comfort.
2, easy to produce cracks. 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, while the internal wall is basically unaffected. When the temperature difference between indoor and outdoor is too large, the internal and external walls will shrink, and this repeated change will always make the wall unstable and prone to cracks.
EPS polystyrene board
EPS polystyrene board is also called expandable polystyrene board. Of course, this kind of board is the most common internal wall insulation material, because it has the characteristics of light weight, low price, low thermal conductivity and low hygroscopicity. Therefore, if you want to keep the interior wall warm, you'd better choose this kind, which is cheap and can keep the room as dry as possible. The use method of EPS polystyrene board is to stick the thermal insulation material directly on the internal and external walls of the building, which takes up no space and is convenient to use.
XPS extruded board
Xps extruded board is made by adding other chemical raw materials into polystyrene resin. It is worth mentioning that xps extruded board has a perfectly closed honeycomb structure, so this structure makes xos extruded board have high compression resistance and strong aging resistance. Therefore, houses that live for a long time can consider using this kind of internal wall insulation material for insulation without long-term replacement, and XPS extruded board has better effect than eps polystyrene board, thanks to its embossing and slotting treatment.
Vitrified microsphere thermal insulation material
Compared with the first two materials, vitrified beads thermal insulation material is more suitable for larger companies or schools because of its lower comprehensive cost. Vitrified microspheres can improve the comprehensive properties of products and reduce the comprehensive production cost.
It is an inorganic glass mineral material, as light as xps extruded board, with corrosion resistance and aging resistance. Therefore, it is suggested that large enterprises use this kind of interior wall insulation material, which is a relatively high-end material to make up for the shortage of existing organic materials, but it cannot be produced well or on a large scale simply because of the immature production equipment and technology.
Today, Bian Xiao's introduction ends here. Because the climate in the north and south is different, we must choose carefully when choosing different interior wall insulation materials, provided that it does not damage the overall beauty of the house. After all, home is a small country, and I hope I can help you.