Extruded polystyrene board is extruded polystyrene foam board, called extruded board. It is one of the most common insulation boards. So what should you pay attention to when purchasing extruded polystyrene panels. ? How to identify its quality? Below we will teach you step by step how to identify the quality of extruded polystyrene boards, for reference only.
How to identify the quality of extruded polystyrene sheets?
1. Look at the raw materials
Extruded polystyrene panels are made from polystyrene resin. But many extruded panels available on the market are now made from recycled materials. Very few are produced by BASF crystals. From the perspective of raw materials, the classification of advantages and disadvantages of extruded polystyrene boards is as follows: extruded board inwhite crystal > blue extruded panel > black extruded panel. There are also red and yellow extruded panels on the market, which are generally similar to blue extruded panels.
2. Look at the microstructure
One of the main uses of extruded polystyrene panels is as an insulation layer for underfloor heating. The secret of extruded polystyrene insulation boards lies in their continuous, uniform surface layer and closed-cell honeycomb structure. The more uniform the cells, the better. The next three microstructures are the white crystal plate, the blue plate and the black plate. The cells of the white crystal panels are uniform and closed. The blue plate bubbles are well sealed. The table has no cells and is basically not closed.
3. Watch the effect of direct pressing with your hands
Different extruded polystyrene plates have ddifferent effects after being pressed with your fingers. The white crystal board is basically invisible to the naked eye after being pressed, the good blue board has smaller marks, the bad blue board has obvious dents, and the direct damage to the black board is the most serious.
4. Look at the lifespan
The lifespan of a house is usually more than 50 years as a hidden part of the house, if the insulating layer cannot last that long. the house, this means that it will not last as long as the house is reinstalled. Tests have shown that the lifespan of white crystal panels can reach 50 years. The lifespan of good blue boards can reach 30 years, and bad blue boards can generally be used for 15 years. The lifespan of blackboards is generally 5 years.
5. Look at environmental protection
I personally recommend notuse fireproof panels for home decoration made of extruded polystyrene, because fireproof HBCD (HBCDD) is not environmentally friendly. White crystal panels are made from 100% new materials and are the most environmentally friendly. The blue tables contain certain additives. The board is made entirely from recycled materials. Eco-friendly white crystal board > blue board > black board.
6. Look at the energy saving performance
The less heat the wall and floor dissipate to the interior, the more energy efficient they are. Due to bubbles, energy saving performance. of the three is: white crystal board > blue board > black board.
7. Look at the bulk density
The bulk density is an important indicator of extruded polystyrene panels. Directly linked to compressive strength. The apparent density ofwhite crystal panels for underfloor heating is 35-36KG/m_. The specific weight of a good blue plate also corresponds to this value. However, due to the raw material of the blue plate, even if the bulk density is the same, the quality of the white crystal plate is still better than that of the blue plate. The apparent density of the almost blue panel is approximately 30 kg/m_. The apparent density of blackboards is generally around 25 kg/m_.
The above is what the publisher brings to you. How to identify the quality of extruded polystyrene panels? all content.
Common polystyrene board specifications: 1800 (2400) × 600 (1200) × (10, 15, 20, 25, 30, 40, 50, 60, 75, 100 mm). Styrene board is short for expandable polystyrene board. It is made from pre-treated, hardened, shaped, dried and cut raw materials. It can not only makefoam products of different densities and shapes, but also produce foam boards of different thicknesses.
Widely used in construction, insulation, packaging, refrigeration, daily necessities, industrial molding and other fields. It can also be used in exhibition venues, merchandise display cases, advertising signs and toy manufacturing. At present, in order to meet the national energy saving requirements of buildings, it is mainly used in exterior wall insulation, exterior interior wall insulation and floor heating.
Performance of ordinary benzene panels:
1. Usually, the external insulation of benzene boards is made of two-component glue which is stirred and mixed on site, so human factors affect the quality of the glue. Significantly increased, affectingt the safety of exterior wall insulation;
2. Some glues used in benzene boards are of good quality when first used on the wall, but no matter what. type of glue is used, these are polymer materials. The common characteristic is that it ages easily and its bonding performance declines rapidly over time. This is particularly important for real estate developers engaged in property management; >3. In addition, although the performance of the adhesive itself is relatively superior, the styrene board The tensile properties of exterior wall insulation are very poor. Exterior wall insulation mainly bears the tensile stress caused by negative wind pressure. Due to the low tensile strength of ordinary benzene board itself, there are technical examples of insulation system peelingexterior walls. There are many in Beijing and northern China.