At present, the market is promoting " zero formaldehyde sheet " everywhere. In the end, what kind of sheet is zero formaldehyde sheet?
“ Zero Formaldehyde Sheet â€: In the building materials and furniture industry, it is strictly referred to as “ formaldehyde zero-release artificial board â€, which is a new type of environmentally-friendly wood-based panel. Formaldehyde release is an industry dysentery that the artificial board industry has long been unable to solve. Because of the manufacture of conventional artificial panels, it is necessary to use a urea-formaldehyde resin binder based on formaldehyde. To achieve zero formaldehyde emission, the sheet must be composed of the core of the sheet: the adhesive changes.
The basic reason for the continuous release of formaldehyde in ordinary wood-based panels is that the manufacture of artificial boards requires the use of aldehyde adhesives such as urea-formaldehyde resins. This adhesive is itself a direct compound of formaldehyde and urea. Because of its low price and good bonding effect, it is widely used in the manufacturing process of wood-based panels. However, the biggest disadvantage of this kind of colloid is that it will spontaneously decompose and reduce under natural conditions, and release free formaldehyde again. When the common people use a large number of ordinary wood-based panels to manufacture furniture, it is easy to form formaldehyde accumulation exceeding the standard in a limited living space, which is harmful to health.
The fundamental difference between “ zero formaldehyde sheet †and ordinary wood-based panels is that it replaces urea-formaldehyde resin with MDI ecological glue. Due to the safety and stability of MDI, it does not contain formaldehyde and does not decompose to produce formaldehyde. The furniture made of this kind of board is also called "zero formaldehyde" furniture on the market. Compared with traditional furniture, it reduces the harmfulness of formaldehyde to the human body to an unprecedented degree. The reporter learned that Wanhua Hexiang board has obtained the aldehyde-free certificate of the United States, Japan and other countries.
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