Geomembrane

Impervious geomembrane releases odors for a reason

2020-06-30
I don't know if you have noticed that when we apply anti-seepage geomembrane, we often smell the peculiar smell from impermeable membrane. Many people who do not know this matter will think that the geomembrane is broken. In fact, the foul odor released by the anti-seepage geomembrane has a reason.

Why does the anti-seepage geomembrane smell? This is because the temperature of the extruder or the temperature of the resin is too high, resulting in a large gap in the taste of resin decomposition, and the oxygen-containing groups on the surface of the resin are oxidized, resulting in the taste of the composite film. The resin itself is a special taste. The extruded composite film also has a taste; the high-boiling, non-volatile solvent is used in the primer coating, which causes the composite film to have a taste.



The solution is to appropriately reduce the extrusion temperature to prevent the resin from decomposing; use low-flavor resin for extrusion compounding to increase the drying temperature of the drying tunnel; increase the amount of air blowing to ensure that the solvent is fully dried. In the construction process of anti-seepage membrane, according to a reasonable construction method, everyone's geomembrane can make full use of its role.
It is normal to have a smell on the impermeable membrane. You don't need to care too much when choosing. If we can grasp the quality when selecting the geomembrane, we can ensure the construction quality in the subsequent construction process, and everyone need not care too much about the taste.
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