Friends who heard about polymer polystyrene board products for the first time may not know much about it, but through observation, we can find that this type of material plays a key role in many fields. For example, they have good insulation properties. Thermal effect, so it can be used in the building materials industry, which can effectively reduce the loss of property items in the event of a fire. On the other hand, the polymeric polystyrene boards on the market can provide better aging resistance and prevent damage caused by prolonged use. The problem of color fading and falling off has also made it gradually become an emerging packaging material.
1. Classification of combustion levels of polymeric polystyrene boards
According to National Standard 97: my country’s current standards classify exterior wall insulation materials into Class A (non-combustible) and Class B1 (flammable) , B2 level (combustible) and B3 level (flammable) 4 levels.
Extruded board is an organic material, so it only has three levels: B1 (flammable), B2 (flammable) and B3 (flammable).
The full name of polystyrene board is polystyrene foam board, also known as foam board or EPS board. It is a white solid with a fine closed-cell structure that is made of expandable polystyrene beads containing a volatile liquid foaming agent, pre-expanded by heating and then heated and formed in a mold.
Polystyrene board itself is a flammable material, so it is not considered a fireproof material at all in terms of fire protection level. So it can't be said to be A-level or B1-level at all. The only fire resistance grades of polystyrene boards on the market are: B2 (flammable) and B3 (flammable).
2. Price of polymerized polystyrene board
1. Hebei Gray polymerized polystyrene board, silicone polystyrene
Company name: Hebei Gray glass wool products Co., Ltd.
Minimum order price: ￥280
2. Shandong A-grade polymeric polystyrene board manufacturer A-grade silica board
Company name: Liaocheng Kaida Thermal Insulation Building Materials Co., Ltd.
Minimum order price: ￥440
3. Xindalu Polystyrene Board Hebei Polystyrene Board Factory
Company name: Langfang Xin Dalu Thermal Insulation Materials Co., Ltd.
Minimum order price: ￥350
3. What is the difference between extruded polystyrene board XPS and polystyrene board EPS
1. Insulation Thermal insulation performance:
The thermal insulation performance of EPS and XPS with the same thickness gradually increases. EPS is 0.041 and XPS is 0.030. Therefore, to achieve the same thermal insulation effect, XPS boards are thinner than EPS boards, but the price of pure boards XPS boards are more expensive than EPS boards. If the craftsmanship and building height are fully considered, the price per square meter of XPS is more expensive than EPS.
For thermal insulation, the main thing is to look at the thermal inertia index D, and the D value is proportional to the heat storage coefficient. But as far as the entire system is concerned, the heat storage of 200mm concrete is already large enough, and with the addition of the external insulation layer, it fully meets the energy-saving requirements. This is also the reason why national regulations require that the comprehensive thermal conductivity and thermal storage coefficient of walls must meet the requirements at the same time. Current EPS or XPS thin plastering systems fully meet the requirements.
2. Strength:
The strength pointed out here should be the tensile strength. There is an absolute relationship between the bulk density of polystyrene board and the tensile strength. The general bulk density of EPS is 18Kg/m3 The tensile strength is 110~120KPa, and the bulk density of 20Kg/m3 is around 140KPa. The bulk density of XPS is normally from 25Kg to 45Kg, and the strength is from 150KPa to 700KPa or higher. (The premise is that the thermal conductivity coefficient is about 0.03).
The current strength of XPS boards is 200KPa-250KPa. Many domestic XPS boards cannot achieve this strength. EPS boards are below 100KPa. Typhoons often occur in more and more abundant facade decorations and coastal areas. In this case, strength is very important, especially for some exterior wall tiles or high-rise buildings. Both boards need to be reinforced or fixed with fasteners.
The pullout of ceramic tiles is greater than 400KPa, which even XPS cannot withstand. The solution is to anchor the steel mesh to the base layer through expansion bolts. This can disperse the tensile stress to the three-dimensional space, so as long as the anchoring is done properly, the pullout damage will definitely be in the composite The crack-resistant mortar layer of the steel mesh is not a big problem.
3. Weather resistance:
Weather resistance refers to the adaptability of the insulation system to external weather changes, and refers to the overall stability and insulation effect of the system under different climate conditions. There are changes and other quality-related issues. Weather resistance is a very important indicator of insulation systems.
Since EPS board has higher water absorption than XPS, its weather resistance is not as good as that of XPS system. However, EPS boards have better ductility than XPS boards and can overcome certain defects. However, as far as the system is concerned, the outer layer of the plastering glue itself of the thin plastering system also has a certain waterproof ability. Except during the construction process, the waterproof performance of both intact systems is acceptable. The contact between rainwater and the wall surface on the exterior wall is vertical. As long as the surface mortar does not crack, there is no problem with waterproofing.
The polymeric polystyrene board introduced to you today has a good thermal insulation effect. Therefore, as a thermal insulation material, it is often used in the field of building materials to ensure a satisfactory living environment and conditions for the later period. In addition, the flame retardant effect of polymeric polystyrene boards on the market is also excellent, and its fireproof performance makes its safety advantages stand out in the market. When a fire occurs, the use of polymeric polystyrene boards can protect important accessories from loss. To reduce further property losses as much as possible, the above is related and similar information. Interested friends can refer to this part and shop around to formulate appropriate plans and solutions.