Method for determining wooden furniture lacquerfilm coatings adhesive force

Abstract

The invention discloses a novel method which can be used for testing the cohesive force of paint film coating of wood furniture. The method combines the cohesive force testing method of the coating and the method of testing the surface bonding strength of the artificial plate of a decorative veneer. In the method, a wet paint film is used as adhesive; a special wood mould is used as a tension module; a finishing plate is adhered to the bottom of the tension module after being painted; after the finishing plate is completely solidified, a tensile tester is used for determining the tension between the tension module and the finishing plate; thus the cohesive force of the paint film can be determined. The novel method can quantitatively and accurately determine the cohesive force of the coating of the paint film, and can provide evidence for choosing a better technology in various types of finishing technology.

Description

technical field [0001] The invention relates to a new method for measuring the adhesion of paint film coatings on wooden furniture, which aims at quantitatively and accurately measuring the adhesion of paint film coatings, and also provides a basis for selecting the best process parameters of coatings in the finishing process Background technique [0002] The paint film on the surface of wooden furniture can improve the surface decoration quality of the furniture on the one hand, and protect the wooden furniture on the other hand. The protective effect of the paint film on furniture can be judged by its physical and chemical performance indicators. At the same time, the physical and chemical properties of the paint film can provide a scientific basis for formulating correct and reasonable finishing process regulations. [0003] When evaluating the quality of paint film, adhesion is often one of the main physical and chemical properties tested. Adhesion refers to the firmnes...

AI Technical Summary

Problems solved by technology

However, due to the poor solvent resistance, heat resistance and hardness of the water-based paint film, the paint film will be damaged if the mold is pasted with a solvent-based adhesive; It will burn the paint film; in addition, the adhesion between the paint film of the water-based paint and the metal is poor, and the test operation is difficult to realize with a metal mold. Therefore, the method of measuring the adhesion of the coating by the pull-off method cannot directly measure the wooden furniture Coating adhesion of surface paint film

Moreover, in a paint film composed of multi-layer coatings, it is difficult to accurately measure the adhesion of any layer above, and it is possible to pull the coating film of other layers apart, so it is difficult to determine which one is measured. layer of paint film

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