In recent years, aluminum-plastic plate has entered home decoration. It is widely used because of its smooth surface, gorgeous color, strong impact resistance, convenient cleaning, durability and fast construction. Aluminum plastic board is divided into two categories: exterior wall engineering board and interior wall decoration board. The latter is generally used for family decoration. Aluminum plastic plate is divided into two types: double-sided and single-sided. The surface of double-sided aluminum-plastic plate is antirust high-strength aluminum alloy plate. Painted on the front and natural color of aluminum plate on the back. The single-sided aluminum-plastic plate has only one layer of aluminum alloy plate on the surface, which has poor strength and cheaper price. The surface painting quality is good. The imported hot pressing spraying process is adopted for aluminum-plastic. The paint film has uniform color and strong adhesion. It is not easy to take off the paint after scratching and touching.
Aluminum plastic board for home decoration is generally used in the modeling of restaurants, kitchens, bathrooms and room heating covers and partitions. During construction, the base surface of the board should be dry and flat first, and it is best to use multilayer board and joinery board as the bottom layer to prevent cracking and deformation. Secondly, when pasting the aluminum-plastic board, pay attention to the uniform gluing. When the strong glue diluent volatilizes, touch it with your hand without sticking it, and knock it with a wooden hammer for compaction. Third, the aluminum-plastic plate shall be divided into several pieces according to the design requirements. It is not suitable to use the whole sheet or large area, otherwise it is easy to cause hollowing and glue opening. Fourth, the joint groove of aluminum-plastic plate is generally sealed with glass glue. It is required that the glass glue must be uniform and full during sealing, and the surface should be cleaned after drying to make the thickness of the lines consistent.
Characteristics of aluminum plastic plate
Aluminum plastic plate is a good material that is easy to process and form. It is also an excellent product in pursuit of efficiency and time. It can shorten the construction period and reduce the cost. Aluminum plastic plate can be cut, cut, grooved, band saw, drilled, processed and countersunk, cold bent, cold rolled, riveted, screwed or glued.
Analysis of common quality problems
Discoloration and decolorization of plastic plate
Discoloration and discoloration of aluminum-plastic plate are mainly caused by improper selection of plate. Aluminum plastic plate is divided into indoor plate and outdoor plate. The surface coating of the two plates is different, which determines their application in different occasions. The surface of the plate used indoors is generally sprayed with resin coating, which can not adapt to the harsh outdoor natural environment. If used outdoors, it will naturally accelerate its aging process and cause discoloration. The surface coating of outdoor aluminum plastic panels usually uses polyfluorinated elastic grease coating with strong anti-aging and ultraviolet resistance. This kind of sheet is expensive. Some construction units deceive the owners, and use indoor boards to pretend to be high quality fluorocarbon sheets which are anti-aging and corrosion resistant, and extract unreasonable profits, resulting in serious discoloration and decolorization of aluminum sheets used in engineering.
Glue opening and falling off of plastic plate
The gluing and falling off of aluminum-plastic plate is mainly due to the improper selection of binder. As an ideal binder for outdoor aluminum-plastic plate engineering, silicone adhesive has unique advantages. In the past, China's silicone glue mainly depended on import, and its value deterred many people. Only those expensive curtain wall projects on high-rise buildings dared to ask for it. Now, China's Zhengzhou, Guangdong, Hangzhou and other places have successively put into production different brands of silicone glue, resulting in a sharp drop in prices. Now, when purchasing aluminum-plastic plate, the seller will recommend the special quick drying adhesive. This kind of glue can be used indoors. When it is used outdoors with changeable climate, there will be the phenomenon of plate glue opening and falling off.
Deformation and bulging of aluminum plastic plate surface
In any city, it is not difficult to find some ugly projects with deformation and bulging of aluminum-plastic plate surface. This phenomenon occurs in small facade decoration projects and in large high-rise buildings. In the past, this kind of quality problem occurred in the construction. We thought it was the quality reason of the plate itself; Later, after everyone's centralized analysis, it was found that the main problem lies in the base plate pasted with aluminum-plastic plate, and the second is the quality problem of aluminum-plastic plate itself. Dealers often provide us with the construction technology of aluminum-plastic board, and the recommended base materials are mainly high-density board, woodworking board and so on. In fact, when this kind of material is used outdoors, its service life is very fragile. After wind, sun and rain, it will inevitably deform. Since the base materials are deformed, is there any reason why the aluminum-plastic plate as the surface layer is not deformed? It can be seen that the ideal outdoor base material should be treated with rust prevention, and the angle steel and square steel pipe should form a skeleton. If conditions permit, it is more ideal to use aluminum profile as the skeleton. The cost of the skeleton made of this kind of metal material is not much higher than that of wooden keel and high-density board, which can really ensure the project quality.
The glue joint of aluminum plastic plate shall be neat
When the aluminum-plastic plate is used to decorate the building surface, there is generally a gap of a certain width between the plates. In order to meet the needs of beauty, the gap is generally filled with black sealant. In order to save time, some constructors do not use paper glue to ensure the neat and regular gluing, but use the protective film on the surface of aluminum-plastic plate as a substitute. Since the protective film will tear to varying degrees when cutting the aluminum-plastic plate, it is impossible to clean up the glue joint neatly by using it as a substitute for the protective tape.