The function of doors and windows itself is to save energy, heat insulation, wind and sound insulation. To put it bluntly, it is sealing, so whether its sealing performance is good is the key to its existence. On the doors and windows of our home, the sealing strip
is just a small part, but we must not underestimate its role. Therefore, we can not use inferior door and window sealing strips in order to save a little cost. The function of doors and windows itself is to save energy, heat insulation, wind and sound insulation. To put it bluntly, it is sealing, so whether its sealing performance is good is the key to its existence. Nowadays, most door and window sealing strips are made of PVC material, but nowadays, due to the rising price of petrochemical products, many door and window sealing strip manufacturers use shoddy products in order to save costs. So since there are so many inferior door and window sealing strips on the market, how should we distinguish it? 1. Use your nose to ask after the sealing strip, because inferior PVC sealing strips have a pungent peculiar smell, unlike ordinary silicone materials that smell mellow, ordinary door and window sealing strips smell very good. Small and not pungent. 2. Put inferior PVC sealing strips and ordinary silicone sealing strips under high temperature. The PVC door and window sealing strips will become soft without a long time, and grease will be precipitated on the surface. The grease will easily absorb dust and will stick to it. Stick your fingers. The silicone sealing strip will not have much impact when it encounters high temperature, and it can accept 200 degrees Celsius. 3. Silicone sealing strip is not afraid of high temperature and low temperature. It will not change after being placed in the refrigerator for a long time. However, the PVC sealing strip will become stiff after a few hours in the refrigerator and can be easily broken. 4. Burning two kinds of sealing strips can also reveal some clues. PVC sealing strips will foam due to burning, and will be accompanied by black smoke, insufficient combustion and plastic residues.
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