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Blockboard is also called Daxin board. Blockboard is one of the man-made boards used in decoration. According to experts, blockboard is made of natural peeling veneer and solid wood panel glued and hot pressed.
According to the quality of the material and the quality of the surface material can be divided into superior products, first-class products and qualified products of several levels.
Plate core materials are also birch, pine, poplar, paulownia and so on.
The sheet material can be laminated on one side or two layers on the two sides of the core, usually divided into three-layer and five-layer.
In the production process of wood board, there will be problems such as unqualified transverse bending strength, excessive formaldehyde emission, unqualified product moisture content, and low bonding strength. Therefore, when selecting a blockboard, it must be carefully selected.
Plate purchase home decoration formaldehyde
Silicon Nitride Ceramic Standard Parts
Silicon nitride is an important structural ceramic material. It is a superhard substance that is inherently lubricious and resistant to wear and is an atomic crystal; it is resistant to oxidation at high temperatures. Moreover, it can resist cold and hot shock, and is heated to above 1000 ° C in the air, and is rapidly cooled and then heated rapidly without breaking. It is precisely because of the excellent properties of Silicon Nitride Ceramics that it is often used to manufacture mechanical components such as bearings, gas turbine blades, mechanical seal rings, and permanent molds. If a silicon nitride ceramic that is resistant to high temperatures and does not easily transfer heat is used to manufacture the heating surface of the engine component, not only the quality of the diesel engine can be improved, fuel is saved, but also thermal efficiency can be improved.
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