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The process of the large core board is very demanding, not only requires sufficient space for the wood to have sufficient time for adaptive natural drying, but also strict drying process control through the drying kiln. In addition, the pros and cons of its processing equipment not only requires a large amount of capital investment, but also the key to ensure the accuracy and quality of product processing.
In particular, after the country imposes a limit on the amount of hazardous materials for decoration and decoration, the Adhesive used for the large core board must be improved. The cost alone will increase by about 10%. In addition, the price of raw materials will continue to increase, so it can be said that it is truly green. The core board of fifty or sixty yuan is impossible to manufacture, and the E1 grade large core board conforms to the national standard. The price of about 90 yuan is already meager profit. If consumers are still blindly pursuing the cheap to buy cheap and inferior large core boards that seriously endanger human health, regular production enterprises will be difficult to survive.
Home decoration can only use E1 level large core board. If the product is a large core board of E2 grade, even if it is a qualified product, the formaldehyde content may exceed 3 times of the E1 grade core board, so it should not be used for home decoration. Once again, the large core plates that cannot be finished are cleaned and sealed, especially in the back panels, various cabinet inner panels and heating covers. At present, experts have studied formaldehyde sealants, formaldehyde blocking waxes and elimination. The aerosol that seals formaldehyde is best used in decoration. However, if the E1 grade large core board is used too much, it may cause the total formaldehyde content in the room to exceed the standard. Therefore, even if it meets the standard, it is not necessarily harmless to the human body.
Generally, no more than 20 large core plates should be used in the living room of about 100 square meters. At the same time, other indoor decoration should be considered. If used too much, the formaldehyde in the indoor environment will exceed the standard. In particular, do not use a large core board as a lining under the floor to avoid serious formaldehyde in the indoor air.
Calcium cyanamide can be used as a desulfurization agent
Calcium cyanamide is a basic chemical raw materials. A wide range of uses. It can be used as a desulphurizer for industrial steelmaking. It can also be used as a Fertilizer, or as a raw material for producing amine products.
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