Abstract
The influence of some parameters (wood species, binder content, water repellent finish, wood humidity and roughness) on the wetting of MDF was investigated by means of contact angle measurements with selected test liquids (water, glycerol, ethylene glycol and diiodmethane) using the sessile drop method. The investigations show that contact angle measurements are mainly disturbed by the penetration of the liquids into the MDF and by the high roughness of the surface. Therefore, the results have principally qualitative character. They represent the following tendency for the five parameters: the use of water repellent finish, increased wood humidity and increased roughness made wetting less effective with water repellent finish showing by far the biggest effect. MDF made of beech showed predominantly better wetting behaviour than that made of spruce. The influence of the binder content could not be unambiguously ascertained.
Published Version
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