What is the difference between environmentally friendly particleboard and environmentally friendly c

First, the production of raw materials is different.

1. Environmentally friendly particleboard: usually the main raw material is wood or other lignocellulose materials made of scraps and adhesives.

2. Environmental protection composite pressed board: usually the main raw materials are magnesium chloride and magnesium oxide, medium alkali glass fiber mesh, and inorganic lightweight materials.

Second, the production method is different.

1. Environmentally friendly particleboard: It is made of adhesive after processing and crushing forest trees, and the amount of glue determines the amount of its chemical composition, that is, its environmental protection.

2. Environmental protection composite pressed board: made of magnesium chloride and magnesium oxide as gel materials, medium alkali glass fiber mesh as reinforcing materials, and inorganic lightweight materials as fillers.

Third, the characteristics are different.

1. Environmental protection particleboard: good sound absorption and sound insulation performance; Particleboard is insulated and sound-absorbing; The interior is a granular cross-staggered structure, and the performance of each part is basically the same, and the transverse bearing capacity is relatively poor.

2. Environmental protection composite pressed board: bright color, beautiful appearance, no need for surface decoration; High strength, can be used as maintenance structure, load-bearing structure, bending and compression.

Most of the composite pressed plates contain aldehydes and benzene, which is how to say environmental protection, it is estimated that it is shouting. I haven't seen any composite board that doesn't contain these chemistries. There is a lot of glue inside the pressing plate. . .

The composite board of particleboard is generally a wood composite composed of two materials with different properties of the core layer and the surface layer, generally known as sandwich board, its surface plate is generally thinner, and the core layer is thicker.

There are many kinds of composite panels, such as blockboard composite panels, due to the defects of the board itself, the secondary processing of melamine cannot be carried out, so a thin layer of MDF or veneer is laminated on the surface.

**Composite panels are a little more expensive.

Particleboard, also known as particle board and bagasse board, is a wood-based board made of wood or other lignocellulosic materials, which is glued under heat and pressure after applying adhesive. Also known as shredding board. It is mainly used in the furniture and construction industry and the manufacture of trains and automobile carriages.

Particleboard is divided into three kinds according to the density of the product: low density (g cm3), medium density (g cm3) and high density (g cm3), and usually produces particleboard with g cm 3 density. According to the slab structure, it is divided into single layer, three layers (including multiple layers) and gradual structure.

According to the water resistance, it is divided into indoor water resistance and outdoor water resistance. There are two types of shavings arranged in the slab: directional type and random type. In addition, there are particleboards made of non-wood materials such as cotton stalks, hemp stalks, bagasse, rice husks, etc., as well as cement wood wool boards and cement particleboards made of inorganic adhesive materials.

There are many specifications of particleboard, with a thickness of 75 mm, a standard thickness of 19 mm, and three types of commonly used thicknesses.

As the basis for evaluating the quality of particleboard and the main properties considered in use, there are density, moisture content, water absorption, thickness expansion rate and so on in terms of physical properties; In terms of mechanical properties, there are static bending strength, vertical plate tensile strength (internal cementation strength), nail holding force, elastic modulus and rigidity modulus. In terms of process properties, there are machinability, adhesiveness, paint finishing, etc. For special-purpose particleboard, it is also necessary to consider its electrical, acoustic, thermal and anti-corrosion, fire and flame retardant properties according to different uses. The production methods of particleboard are divided into flat pressing method, extrusion method and roll pressing method according to the different slab forming and hot pressing process equipment.

The flat pressing method is intermittent production, and the extrusion method and roller pressing method are continuous production. In actual production, the flat pressing method is the main one.

Particleboard is a thin board made of wood scrap as the main raw material, and then infiltrated with glue and additives pressed. According to the pressing method, it can be divided into two categories: extruded particleboard and flat-pressed particleboard. The main advantage of this type of plate is that it is extremely cheap.

The disadvantage is also obvious: extremely poor strength. Generally, it is not suitable for making large or powerful furniture.