The use and advantages and disadvantages of various plates
Blockboard, 9 PCT board, also known as Daxin board, is a common board, in which the board is glued to the core with multi-layered wood sticks, and the two sides are then affixed with thin sheets, since these sheets are glued together. In addition, the quality of domestic binders is not uniform, and the content of formaldehyde and benzene in many binders is excessive, resulting in excessive levels of these substances in the panels. The furniture tends to have a pungent taste after it is completed.
Due to the combination of various types of Zamu, the density varies greatly, and it is easy to produce distortion; the moisture content is high; the content of formaldehyde is high; it cannot be used directly and must be processed later.
Usage: The commonly used processing method is manual single-layer paste veneer or brush mixed oil, paint varnish on the back, such as double-sided stickers are twice as expensive.
Environmental testing standards: The amount of formaldehyde released per cubic meter of board should be less than or equal to 150 mg.
Even if it has such defects, the current home improvement project is whether it is doors, door covers, window covers, heating covers, lockers, and partition cabinets.
MDF is also a very common plate, because it is made of wood powder pressed and bonded, so the structure is dense, the surface is smooth, the processing is simple, not easy to moisture deformation, low formaldehyde content, it is suitable for on-site production of furniture, but in addition to the same above In addition to the problems, there is also a fatal problem, that is, holding the nail is not strong, because it is a structure of wood flour, no lines, so when the nail or screw fastening, in particular, the screw is tightened twice in the same place If this is the case, the fastening force will be lost again. The logs are degreased and crushed, crushed into wood chips and then shaped by high temperature and high pressure. The density is very high. Therefore, it is called a density board, and its surface is often affixed with trimers such as trimerized hydrogen ammonia or veneer.
According to the difference between the imported veneer and domestic and thickness, the price of each piece from 80 yuan to 200 yuan, ranging from 80 to 200 yuan per cubic meter of board, the formaldehyde emission should be less than or equal to 30 mg.
The particle board, after crushing all kinds of branch buds into granules, is then bonded by high pressure. Because its profile resembles a honeycomb, it is called particle board. Nowadays, most of the panel furniture in the world use this type of panel. The advantage is that the interior is a granular structure with cross-stitch structure, so the nail holding power is good, the lateral bearing capacity is good, and the manufacturing cost is lower than that of the medium density panel. The formaldehyde content is higher than the medium density. The board is high, but much lower than the big board; the price is relatively cheap (according to the difference between the imports of imported finishes and domestic and thickness, each price ranges from 60 to 160 yuan).
Disadvantages are easy to make because of the method, the quality is very different, it is difficult to distinguish, the bending resistance and tensile strength are poor, and the density is loose and loose.
Usage The surface is often double-laminated with a tri-hydrin-based veneer, and has the same appearance as the MDF after edge-sealing.
The use of various plates
Plasterboard: suspended ceiling
Three clips, five clips, nine plywood are splints, also known as fine core board, a few clip is a few layers of board fight, a layer of 1mm.
The blockboard, also known as the big core board, looks like three layers, with a thick middle layer and different cores. It has Liu'an and Zamu's, and Liu'an is a good point. Both sides are approximately 2mm thick and generally have a total thickness of 18mm.
The MDF is made by pressing the gum with a gum. Their use is for wood products, storage rooms, shoe cabinets, door covers, window covers, baseboards, etc.
man made rock
Domestic artificial marbles are not much different in material, and most of them are saturated resin and stone powder. Therefore, the scientific and technological content of products is very low. The difference between good and bad is nothing more than whether the proportion of these two things is reasonable. More resin, the material will not have the texture of stone, will have a sense of transparency, plastic. With more stone powder, the material is friable and brittle, and it is not easy to bond.
Imported artificial marble is an unsaturated resin used as a main material. Both strength and toughness are far greater than saturated resins. They are the raw materials used to make dentures and the processing process is completely different, so the price is expensive.
It is easy to distinguish the difference between the two:
1, with a fire, domestic materials will have a clear burning smell of plastic, while the import material is not;
2. Domestic materials are white powder when polished, and imported materials are in sheet form.
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