What are the factors that affect the peel strength of aluminum honeycomb panels

Aluminum honeycomb panel is a common composite material, especially some building exterior wall decoration will be used. Because of its unique advantages, it is sought after by many consumers and has the advantages of ordinary composite materials. However, if it is not handled well, it will lead to peeling. There are many factors that cause this phenomenon. What are the factors that affect the peel strength?

　　Adhesive for 1. aluminum honeycomb panel

1. Selection of polyurethane materials. Epoxy glue indoor temperature curing adhesive production Products, its bonding compressive strength is low, the product adhesion. The aging resistance is weak, and the adhesion characteristics are greatly reduced after one year of application. The Products produced by this process are not suitable for outdoor use, but can be used for interior decoration design baffles.

2, the use of epoxy film processing technology to produce Products with low bonding strength, bonding characteristics of aging resistance, the use of a year after the strength is not reduced. The disadvantage is that the adhesive layer is very brittle and will produce grades after vibration.

3. The adhesive strength of the product produced by the continuous composite processing process of thermosetting plastic adhesive paper is 3-5 times that of the first two processing processes, and its adhesion. The aging resistance is good, and the strength is not reduced after one year of application. Due to the continuous production, high efficiency, a large number of delivery provisions can be considered in the short term. The disadvantage of this processing technology is the high price of the continuous thermal integration machinery and equipment of the selected plan, and the project investment is large. Thermosetting plastic adhesive paper is this unique hot melt adhesive film. The adhesive tape itself should have high cohesive compressive strength and tensile strength to ensure that the aluminum honeycomb panel is firmly bonded.

　　2. production process

Choose the Products produced by the hot press. Due to the high working pressure of the hot press and the difficulty of operation, in order to avoid the collapse of the aluminum honeycomb core, protective layer gaskets are often placed. If the protective layer gasket is higher, it will affect the released working pressure, resulting in lower bonding strength. If you choose a floor plan thermal integrated machine, because the working pressure shows elasticity, the working pressure can be released according to the adjustment of the aspect ratio operation, so the product produced by this processing process has high bonding strength and is very stable.

　　3. sheet metal aluminum surface

　　钣金铝板表面的油渍。赃物和自然产生的松散空气氧化层会严重损害aluminum honeycomb panelThe actual bonding effect. Therefore, cleaning and uniform treatment must be carried out. The aluminum surface can be solved by pickling, phosphating or chromating, so that the surface of the aluminum plate produces an indivisible organic chemical conversion film, and the aluminum plate after the solution is easy to bond.