Everyone has a certain understanding of sandwich panels, but do you know what kinds of core materials are? According to its sandwich materials, it can be divided into chemical foam materials and inorganic fiber materials.
Among them, the chemical foam sandwich panel is a typical polyurethane sandwich panel, which has poor heat resistance, easy combustion and great potential safety hazards. The other inorganic fiber material, which is typically rock wool and glass wool, is widely used in large-scale public building projects. Because of their high heat resistance and environmental protection characteristics, this type of sandwich panel will be given priority when choosing curtain wall materials.
What are the precautions for the construction and installation of such a popular rock wool sandwich panel with obvious advantages?
1. The allowable specification error of rock wool sandwich plate cut with heating wire or special tool knife is ± 1.5.
2. The color steel rock wool sandwich panel will be applied to the movable scaffold in the installation process. First of all, it is necessary to ensure the bearing capacity of the scaffold, because the weight of people and the weight of building materials should be taken into account, and the angle between the color steel panel curtain and the working surface should also be considered; Find out the distance and position of the control point against the reference screen wall surface, so that the construction can be more smooth and lay a good foundation for the later construction.
3. Wipe the prepared special weather resistant adhesive on the back of the rock wool sandwich panel. The thickness of the adhesive is about 3. In order to ensure firm bonding, the bonding methods can be strip bonding and strip point bonding.
4. Strip bonding method: use a toothed knife to evenly smear the special adhesive on the rock wool sandwich plate in the horizontal direction. The strip width is 10, the thickness is 10, and the median distance is 50.
5. Strip method: use a scraper ruler to smear a special adhesive with a width of 50 and a thickness of 10 near and in the middle of each rock wool sandwich plate, and then smear a punching bar with a diameter of 100 and a thickness of 10 in the separated area of the rock wool sandwich plate.
6. Quickly paste the rock wool sandwich board with special adhesive on the wall to avoid the loss of bonding effect due to film formation on the surface. Do not wipe the special adhesive on the side of the rock wool sandwich board.
7. After the rock wool sandwich plate is adhered to the wall, it shall be leveled with a two meter level ruler to ensure its flatness and firmness of adhesion in actual operation. The plates shall be tightly squeezed without joints. The gaps caused by laser cutting and bending shall be plugged in and ground away with rock wool sandwich strips. The extruded special-purpose adhesive shall be removed after each plate is bonded.
