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 wall insulation
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| qizhen0926 |
Geplaatst op 10-10-2016 03:59
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 Lid  Berichten: 105 Datum van aanmelding: 18.01.16 |
At present, the vast majority of exterior wall insulation project there are different degrees of coating problems, which is the outstanding problem is the bubble spallation, cracking water seepage. The main reasons for the following reasons: First, the implementation of the external insulation of the building is easy to condensation in the insulation layer below the liquid water.pvc flooring industry review Combined with the external insulation system if the construction is not strict or the material itself is also very easy to absorb rainwater; Second, the sun straight parts of the sun, wall temperature, liquid water into steam, water vapor volume expansion, it will Spread around. As the poor permeability of polystyrene board, condensation water generated only from the weakest parts, that is, the gap of polystyrene board escape; such as external insulation system, the use of low-grade paint, the main problem is water seepage.outdoor plastic wood decking South Africa Puffing, etc., but not prone to peeling, peeling problems, the main reasons are as follows: Second, the low-grade paint water resistance is poor, easy to pan-base, poor weather, over time, on the long-term, on the long-term, on the long-term, Easy to fade and powder, and its durability is poor. Third, when the airtight coating, the bubble first appeared in the polystyrene board seams, and then through the freeze-thaw cycle, will produce peeling. Visible, poor paint ventilation is the outer wall insulation coating blis****, peeling, peeling off the main reasonscomposite wood board produced Aluminum is a light metal, and its compound is widely distributed in nature, and the amount of aluminum in the crust is second only to oxygen and silicon, ranking third. In all metal varieties, the yield is second only to steel, which is the second largest metal. The density of aluminum is 2.7103 g / cm3, about 1/3 of steel and copper density, and the specific gravity is 2.7. Aluminum has special chemistry, physical characteristics, not only lightweight, texture, but also has good ductility, conductivity, thermal conductivity, heat resistance, and nuclear radiation, is an important foundation raw material for national economic development.
Aluminum rods perform non-ferrous metal industry standards (YS / T 67-2012) should be called "aluminum alloy round ingots", is the most important primary product after aluminum spindle and casting, is the main primitive of aluminum profiles, of which The Aluminum rod of the number 6063 is the widest range of breeds in the market. |
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