Extruded board is also called polystyrene board (xps board). It is mainly foamed with polystyrene as raw material, so it is also called foam insulation board. The thermal insulation effect of extruded board cannot be analyzed and judged from the appearance, because the density of extruded board cannot be directly viewed from the appearance. To put it simply, it has to be weighed (weight per cubic meter of extruded board), and then thickness. These two factors are necessary conditions that determine the thermal insulation effect of extruded board.
The weight of extruded board is commonly 18-35 kg. What is said here is the volume weight per cubic meter, because the density of extruded board is proportional to the volume weight. The greater the density, the greater the volume weight, and vice versa. So for the thermal insulation effect, just choose boards with larger volume weight.
Of course, if you have a specific constant temperature time, that is, what we call how long it can keep warm after the heat source leaves, to judge, you can use different extruded boards to test and view, which can effectively control the budget. The volume weight gap of extruded boards is large. If you use 28 kg volume weight to achieve the constant temperature effect, then there is no need to use a higher volume weight. This is also a confirmation of the thermal insulation effect.
In addition to the thermal insulation effect, some projects also have certain requirements for its combustion performance, because insulation materials may have unpredictable overheating and overload during use, even if it is one in 100,000 or one in a million, and this problem may not occur in normal use, it may occur during construction, or it may be caused by humans during handling. Therefore, fire prevention is also an important link in the use of extruded boards. So it is recommended to try to use B2 grade and above extruded boards when selecting extruded boards, because it can play a better protective role.
Thermal insulation, in fact, in addition to the above two items, there is also thickness, which will also have different effects on the thermal insulation effect. It can also be said from the thickness that the greater the thickness, the better its thermal insulation effect. It's just that it still has an upper limit value and the actual terrain allowable thickness value. Therefore, according to the site situation, first judge the thickness required for the extruded board, and then judge the density (volume weight) of the extruded board used. As long as these two parameters can meet the requirements and meet the relevant use needs, then it is the insulation board you need.
The above is about thermal insulation. Of course, it can also keep cold, that is, used in cold storage. Usually, the extruded boards we commonly see are mostly used in engineering construction, but cold storage is relatively rare. In fact, it can also be used in cold storage. For insulation materials, thermal insulation and cold insulation are actually the physical properties of the material itself that are simultaneously possessed. The use of extruded boards in cold storage is mostly on the ground of the cold storage, because its volume weight is much higher than that of particle boards, so people will not have much impact when stepping on its surface layer when entering the cold storage. Just like some indoor swimming pools, extruded boards are also used as the bottom material, and then a waterproof layer is laid on its surface layer.
Regarding the thermal insulation effect of extruded boards, for the time being we do not have specific data to explain, because this requires on-site testing, and also requires materials with different volume weights and different combustion grades. But later we will find a way to obtain relevant thermal insulation data and display it. See you next time.
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