The main mechanical properties of aluminum-plastic plate include bending strength, bending elastic modulus, penetration resistance, shear strength, peel strength, etc., which are important indicators related to the reliability and safety of aluminum-plastic plate and an important basis for structural design.
The main purpose of aluminum plastic plate is curtain wall and indoor and outdoor decoration. The curtain wall is the external maintenance component of the building, also known as the hanging wall. It does not bear the load of the main structure, but mainly bears the self weight, wind load, earthquake and temperature. Self weight is a gravity load, a constant load that often acts. Due to the small density of aluminum-plastic plate, the stress generated by mass is small and does not play a major role. The latter three are variable loads. For the vertical building curtain wall, the wind load is the main, and its value can reach 2.0-5.0kpa. As for the effect of earthquake, because the aluminum-plastic plate is light, even according to the maximum seismic left camp coefficient, it is only 0.1-0.8kpa, which is far less than the wind force, and the effect of temperature is very small. Therefore, as a curtain wall material, wind pressure resistance is the main consideration. When the wind vertically acts on the aluminum-plastic plate, the aluminum-plastic plate mainly produces bending deformation, so the bending strength and bending elastic modulus are one of the important properties and parameters of the aluminum-plastic plate of curtain wall.
Shear is also the stress mode of aluminum-plastic composite plate, so penetration resistance and shear strength are also one of the important parameters for structural design. 180 ° peel strength is an important index to reflect the bonding performance between aluminum plate and core material. If the aluminum-plastic plate is seriously deformed and glued under its own or structural stress after being used for a period of time, it will seriously affect the quality and safety of the building.