1. A straight line perpendicular to the midplane of the […]
1. A straight line perpendicular to the midplane of the board before deformation, but still a straight line perpendicular to the elastic curved surface after deformation, and the length remains unchanged. Compared with the other three components, the transverse normal stress and shear stress of high temperature resistant foam are very small, and the deformation caused by them can be ignored. High temperature resistant foam is a foam inhibitor and defoamer with good miscibility. It is suitable for solvent-based, solvent-free and UV curing systems, especially for the bubble elimination effect of thick polyurethane coatings. At the same time, it has the effect of inhibiting and eliminating bubbles in spray curtain, roll coating and curtain coating.
2. There is no displacement of each point in the midplane of the plate parallel to the midplane; the sandwich structure panel mainly bears tension and pressure, while the core is equivalent to the web, which mainly bears the shear force during bending. Therefore, in construction, materials with thinner thickness, high strength and high rigidity are usually used as panels, and materials with low density, greater thickness and certain shear capacity are used as core layers, and they are connected by glueing.
3. The main structural feature of the sandwich structure is its high flexural rigidity, which can withstand larger bending loads when the structural mass is small, that is, it has a high flexural rigidity to mass ratio; high temperature resistant foam has good fatigue resistance; The surface of the component is smooth and flat, and has a good aerodynamic surface, so it is widely used in the manufacture of external parts of aircraft and rockets.
High temperature resistant foam packaging: This product is packed in 50KG, 60KG, 120KG, 200KG plastic drums. Storage: This product is not dangerous and non-flammable. Store it in a cool, ventilated and dry place sealed indoors. Before use, the container should be strictly sealed after each use. The shelf life is about 25 and 12 months. Transportation: It must be sealed well during transportation to prevent from moisture, strong alkali, strong acid, rainwater and other impurities.