What are the common problems of XPS extruded board
What are the common problems of XPS extruded boardRegarding XPS extruded board, you may have a lot of problems to be solved, but I don't know how to answer them. Next, in order to solve the XPS extruded board problems that everyone faces, I will explain to you the common questions of XPS extruded board, I hope to help you.
1. The relationship between XPS extruded board cell structure and compressive strength and thermal insulation performance?
The cell structure of XPS extruded board is that the cell size is tiny and fine, the cell distribution is even, the cell shape is round; the cell diameter and cell shape are divided. The microscope shows a closed honeycomb structure, the cells are fine and the cells are very large, the cell size is round, so the XPS extruded board has high compressive strength and good thermal insulation performance.
2. Is the XPS extruded board the heavier the heavier the better?
At present, some manufacturers in the market mislead consumers, saying that the heavier the weight of XPS extruded board products, the better. In fact, it is not the first thing to confirm that we need is thermal insulation material, its purpose is to heat insulation.
The heavier the density of XPS extruded board means that XPS extruded board has poor foaming, that is, XPS extruded board has poor thermal insulation performance; the lighter the XPS extruded board, is it better? Nor is it foamed Too light, the compressive strength of XPS extruded board decreases.
In order to achieve thermal insulation, XPS extruded board can only play the role of thermal insulation with proper foaming. The uniformity of the cell structure determines the performance of the product.
3. XPS extruded board external wall internal insulation system
It is the main material of XPS extruded plastic board for external wall internal insulation system. It is fixed on the inner surface of the external wall by sticking and nailing. It is painted with gypsum mortar as a protective layer. It is alkali-resistant and coated with glass fiber. The grid is the reinforcement layer, and the surface is smoothed with a water-resistant putty. The surface layer of the decorative surface is mostly pasted with paint or adhesive with high adhesion.
4. Is self-extinguishing from fire a fire-retardant standard for XPS extruded board at the construction site?
Level B2 (oxygen index ≥26) is the test result of XPS extruded board required by the national standard under laboratory conditions. It has strict test conditions and cannot be simply understood as self-extinguishing from fire.
Many people on the construction site ignited the upright XPS extruded board with an open flame to see if the method of leaving the fire source to extinguish themselves is useful, but it is not scientifically rigorous.
5. In order to meet the 65% energy saving requirement, will the replacement of EPS polystyrene board with XPS extruded plastic board cause a significant increase in construction cost?
It will not increase significantly. Compared with the EPS polystyrene board, the price of XPS extruded board is higher than the latter, but according to the energy saving standard of 65%, the EPS polystyrene board needs 8-10 cm thick, and the XPS extruded board only needs 5 cm thick. . Due to different thicknesses and different construction practices, the construction cost of thermal insulation system is almost the same.
XPS extruded board and EPS polystyrene board have different application effects. The thermal resistance coefficient of XPS extruded board is constant and basically unchanged, no water absorption, high compression and bearing capacity, and long service life; the thermal resistance coefficient of EPS polystyrene board will gradually increase with time, easy to absorb water, compression resistance and poor bearing capacity, easy Aging, life is not long
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