The national standard for solid wood flooring is GB/T15306-2009. The standard has been implemented since December 1, 2009, and the original 2001 standard has been replaced at the same time. The new national standard has made important revisions and additions to the old national standard. This standard specifies the indicators for solid wood flooring in terms of appearance quality, processing accuracy and physical and mechanical properties. The physical and mechanical properties are: moisture content, paint surface wear resistance, paint film adhesion and paint film hardness.
The moisture content index refers to the moisture content of the solid wood floor in the unsold or just removed packaging state in the sales area. If the indicator fails, the floor will be deformed, warped, arched or sewn in use, which will affect the appearance and performance. The national standard stipulates that the moisture content of solid wood flooring is 7% to the equilibrium moisture content of the sales location.
The wear resistance of the surface of the paint plate reflects the wear resistance of the painted surface of the solid wood floor. If the indicator fails, the paint quality of the floor is poor, which will affect the service life of the floor. The national standard stipulates that the surface wear resistance index of solid wood floor lacquer board is ≤0.08g/100r; the first grade ≤0.10g/100r; the qualified product ≤0.15g/100r.
The adhesion of the paint film reflects the adhesion strength of the paint to the solid wood floor. The failure of this index also indicates that the paint quality of the floor is poor. In use, the paint may crack or even peel off, which also affects the service life of the floor. The national standard stipulates that the adhesion index of the solid wood floor paint film of superior grade is 0~1 grade; the first grade ≤2 grade; the qualified grade ≤3 grade.
The hardness of the paint film reflects the strength of the paint film on the surface of the solid wood floor. It is closely related to the material of the solid wood floor and the thickness and material of the paint film. The national standard stipulates that the hardness index of the solid wood floor paint film is 2H; Qualified product ≥ H.
At present, there is also a kind of crystal steel floor which is uniquely created by Kefei floor. The wear resistance coefficient of this kind of floor is very high, and there is no scratch on the board surface with the force of the coin. It solves the worry that the public is easy to scratch the solid wood floor in life, and is gradually getting to the market.
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