Honeycomb panels are a popular building material in the construction industry today. Its production materials directly affect its quality, so how to choose the raw materials of honeycomb panels? Let's take a look.
1. Aluminum back plate
Honeycomb plate back plate should be made of the same material as the panel. The surface should be anodized. The exposed side should be coated with protective coating. The coating material can be polyester, epoxy or acrylic to prevent long-term. Exposure to air causes corrosion of the aluminum sheet.
2. Aluminum decorative panel
The material of the honeycomb panel decorative panel is generally selected from 3003, 5005, etc., and the 1100 sheet with low alloy composition is less used. The decorative surface is sprayed or rolled, the coating is polyester or fluorocarbon paint, the outer wall is preferably sprayed, and the three coats are required, the thickness of the paint layer is ≥40μm, so as to ensure the durability of the coating.
The aluminum plate is subjected to a strict surface anodizing treatment before painting to ensure sufficient coating adhesion and bonding strength with the honeycomb core. The panel coating should meet the requirements of the national standard YS/T429.2-2000.
3. Aluminum honeycomb core material
The aluminum honeycomb core material is manufactured by aluminum foil and special honeycomb node glue on the aluminum honeycomb core production line. The factors affecting the performance of the honeycomb core material mainly include parameters such as aluminum foil, noodle glue and honeycomb core specifications.
3.1 Aluminum foil
Aluminum foil should be selected 3003 grade, the processing should be strictly surface treatment, in the products with high requirements on strength or durability, the honeycomb core material processed by 1100 pure aluminum foil should be used with caution.
3.2 Honeycomb Core Specifications
The aluminum honeycomb core size is determined by the thickness of the aluminum foil and the cell size of the honeycomb. The aluminum honeycombs of different specifications have different densities and different mechanical properties, and the manufacturing cost thereof also has a large difference.
The honeycomb core size can be expressed in two ways: the honeycomb inscribed circle diameter (imperial unit) and the aluminum foil thickness/pore length (metric unit). The national standard in China is expressed by the thickness of the aluminum foil/the length of the hole.
3.3 Gum glue
The epoxy resin should be epoxy modified high temperature curing adhesive, which not only provides sufficient bonding strength but also has excellent environmental resistance and high and low temperature resistance. Common adhesives tend to degumm the honeycomb core due to low strength, resulting in overall failure and instability.
The node strength of the honeycomb core is the main basis for evaluating its performance, and its node strength data should be ≥2.0N/mm.
