EnglishViews: 202 Author: Julong Publish Time: 2023-06-12 Origin: Site
Aluminum honeycomb panel is a type of construction material with exceptional performance; it is lightweight, strong, and has good sound insulation and noise reduction properties, making it the preferable material for some special occasions for building decorating. So, what type of adhesive is used to join aluminum honeycomb panels? Is it possible to overcome the bonding problem of aluminum honeycomb panels by using hot melt adhesive film?
Polyurethane-type adhesive materials have traditionally been used to bind aluminum honeycomb panels. Polyurethane adhesives are well-known and commonly used for high-strength metal bonding. Many decorative building materials now use nail-free polyurethane glue. Polyurethane glue is a type of aluminum honeycomb board adhesive with good performance.
But what is the issue with polyurethane adhesive? The main issue with polyurethane glue is its sluggish curing speed, which requires 24 hours of room temperature curing to achieve a satisfactory binding strength. Such a cure speed severely affects aluminum honeycomb panel production efficiency, and using hot melt adhesive film instead of polyurethane glue to attach aluminum honeycomb panels can greatly enhance aluminum honeycomb panel production efficiency.
Hot melt film is an environmentally friendly adhesive product that melts into a liquid when heated, infiltrates the surface of the object to be attached, and then cools and solidifies to generate adhesive strength. Hot melt adhesive film may make a reliable bond as long as it is completely cooled, which can be accomplished fast with cold pressing technology. By bonding aluminum honeycomb panels with hot melt adhesive film, the production cycle of one panel is decreased from 1-2 days to 1-2 minutes, considerably improving the production efficiency of aluminum honeycomb panels.
PO-type hot melt adhesive film is extensively used in the fabrication of aluminum honeycomb panels. PO-type aluminum honeycomb panels' unique adhesive film has strong adhesion to metal aluminum and a high bonding strength. Furthermore, due to the honeycomb-shaped aluminum bonding, the actual bonding contact area is quite modest. This necessitates the use of a PO-type hot melt adhesive film with strong shrinkage resistance, which may create a superior package to the aluminum itself, resulting in a stable bond.
First, the aluminum panel is formed into a box, curved, and other shapes, and then sprayed with adhesive, and then the honeycomb core and panel are laminated in order, with appropriate pressure, and can be cured after a week at room temperature; if heated to less than 100 degrees for curing using a hot press, it only takes a few hours to cure. Bonding adhesives are typically two-component polyurethane adhesive and two-component epoxy structural adhesive. This method produces aluminum honeycomb panels with weak adhesion and weather resistance that are suitable for indoor ornamental dividers but not for outdoor use.
Firstly, the aluminum panel and honeycomb core are stacked in order, then sent into the plane edge sequential composite machine in order, under the case of pressurized heating, after a few minutes of composite, after the case of pressurization a bit of cooling, the resulting aluminum honeycomb panel flatness, weather resistance, high affixing.
Related product:Honeycomb Core Sandwich Panels.
First, stack the aluminum panel and honeycomb core, and then send it into the hot press heated to 150 degrees, and then remove the cooling can after about 10 minutes of thermoplastic adhesive film continuous composite. Synthesis of the adhesive film using epoxy film on epoxy-modified resin and nylon or non-woven fabric. This technique produces an aluminum honeycomb panel with great weather resistance, but the bonding layer is fragile, and long-term vibration causes delamination, making it unsuitable for rail transportation.
