Surface resistant to cigarette burning
Put the cigarette on the floor and see if there are cracks, dark spots or bubbling on the surface. If not, the floor is flame retardant.
density
The higher the density, the better the mechanical properties of the product and the better the impact resistance. However, under the same conditions, the water swell thickness expansion rate is too large, and the dimensional stability is worse; in addition, the higher the density, the more the product cost is increased.
Static bending strength and elastic modulus
These two items are important indicators reflecting the mechanical strength of the product. They are mainly determined by the quality of the wood and the glue. Finally, they are reflected in the anti-destructive ability of the floor gutter combination. The higher the index, the better the flexural strength of the floor against external forces. According to the national standard GB/T 18102-2007, the static bending strength is ≥35M.
Surface scratch resistance
The scratch resistance of the surface reflects the ability of the product to resist sharp hard objects. The higher the surface scratch resistance value, the stronger the ability to resist sharp hard objects.
Surface impact resistance
This indicator can be self-tested by the consumer, with a heavy ball falling on the surface of the product. If there is a more obvious surface depression, the surface impact resistance is poor.
Peel resistance
This indicator reflects the quality of the glue between the surface finish of the laminate flooring and the substrate, such as poor gluing quality, which can cause peeling of the decorative layer after a period of use.
Surface wear resistance
The wear resistance of the reinforced floor is determined by the surface wear layer and is expressed by the wear resistance number. The household is generally about 6,000 rpm, and the public is about 10,000 rpm. There are four types of wear-resistant layers for laminate flooring on the market today: the floor area of ​​about 30g of aluminum oxide per square meter has a wear resistance of about 4,000 rpm; the wear resistance of about 38g is about 5000 rpm; The wear resistance of about 44g is about 9000 rpm; the wear resistance of about 62g is about 18000 rpm.
Free formaldehyde content
The laminate flooring contains a certain amount of formaldehyde in the adhesive. Excessive formaldehyde is harmful to the human body. If the human body is in a high concentration environment for a long time, there is a risk of carcinogenesis. China has issued mandatory standards for the concentration of formaldehyde in public places, and the regulations do not exceed 0.12mg/m3. According to national regulations, the formaldehyde content of laminate flooring is not more than 30mg/100g, preferably less than 9mg/100g.
Water absorption thickness expansion ratio
The higher the indicator, the easier the floor will swell. The state stipulates that this indicator is within 2%.
Internal bond strength
Reflecting the quality of the glue between the fibers inside the substrate, the greater the strength, the closer the combination of the layers of the wood floor, the national regulations should reach more than 1Map.
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