The difference and construction method of medium density cement fiberboard and high density cement fiberboard

1. Density board is made of fiber, which can be seen by the naked eye. The fibers of HDF are relatively tight, while MDF is not so tight.

2, any product is divided into different models, fiber cement board has high density, medium density, low density three kinds, all belong to fiber cement board. Low density 0.9-1.2g/cm3, medium density 1.2-1.5g/cm3 high density 1.5-2.0g/cm3.

3, the greater the pressure, the greater the density, and the thickness becomes thinner: on the contrary, the smaller the pressure, the smaller the density, and the thickness becomes thicker.

4. Use:

High density board: indoor and outdoor decoration, office and civil furniture, audio, vehicle interior decoration, can also be used as computer room anti-static floor, wall board, security door, wall board, partition and other production materials. It is also a good material for packing. In recent YEARS IS USED AS BASE MATERIAL TO MAKE agGRANDISE WOOD floor and so on.

Medium DENSITY BOARD: lamINATE WOOD floor, DOOR panel, partition wall, furniture is equivalent, MEDIUM DENSITY board is mainly used in the surface treatment of mixed oil process in home decoration.

1, according to the different span of the building, static load, dynamic load size calculation, selection of reasonable profiles, design of the main and secondary beam spacing, in order to better and reasonable selection of fiber cement pressure plate.

2. During the construction of fiber cement pressure plate, the arrangement of profiles and welding must meet the requirements of the drawing design, the strength of welding joints and the quality of welding must meet the standard requirements of GB/T5185-1985, and the welding joints of the contact surface with fiber cement plate should be smoothed before the slab laying to clear the spatter during welding.

3, according to the different span of the building, the size of the load, the spacing of the supporting beam, the selected fiber cement board thickness is also different, but according to the specifications of the national building materials, the selected fiber cement board must be high density fiber cement board, the density is greater than 1.8g/cm3, the flexural strength (air dry state) should be greater than 28Mpa.

4, the longitudinal and transverse resistance value of high density fiber cement board is slightly different, so the longitudinal direction of the board should be placed parallel to the main beam, the edge of the joint between the board and the board should fall on the same beam, and the silicone rubber seal is filled between the board joints.

5. Any edge of the fiber cement board shall not be suspended.

6, fixed with the length of the tapping nail for the plate thickness plus 30--35mm, nail distance between 300-600mm, board around the nail hole center from the edge of the plate should be about 20mm.

7, kitchen, bathroom because considering the waterproof layer, and the area is small, static and dynamic load requirements are slightly smaller, so the thickness of the board can be slightly thinner, the selected profile model can also be judged accordingly.