Foreign
As a high-tech composite product, aluminum composite panel has a history of more than 50 years since it was researched and developed in Europe in the 1960s, and its various properties are constantly improving and improving, and the product is widely used. It exists in the transportation industry, the construction industry and some special industries, such as the advertising industry. Especially in the construction industry, it is widely used due to its light weight per unit area, high relative strength, and easy processing and installation. From indoor to outdoor decoration of buildings, from low-rise buildings to high-rise buildings, aluminum composite panels can be seen. At the same time, foreign countries have a set of very strict and certified operating specifications in the application of aluminum composite panels to ensure that aluminum composite panels can be used correctly. Especially when the product is used in buildings, its product certification and user units must strictly abide by the relevant specifications. Due to the strict certification system, the application of foreign clad aluminum composite panels, especially in Europe, has been developing in the past forty years, and new products and systems have been emerging.
Domestic
Aluminum composite panel is a new type of ecological environment building material. Since its invention in the 1960s, it has been widely used for its advanced composite material structure and properties, excellent cost performance and ease of processing, colorful decorative effects and durability, significant resource saving and environmental protection. In the fields of building curtain wall, indoor and outdoor decoration, advertising plaque, vehicle and ship decoration, furniture manufacturing and so on. Aluminum-plastic composite panels are mostly used in urban landmark buildings such as airports, large stadiums and theaters, so they have attracted much attention and are important products related to the national economy and people's livelihood. After entering the 21st century, with the rapid development of my country's construction industry, especially the successful bid for the Beijing Olympic Games and the Shanghai World Expo, the aluminum composite panel is called by architects as the third generation of curtain wall materials after stone (ceramic tiles) and glass. , has developed rapidly.
China is the world's largest producer, consumer and exporter of aluminum-plastic composite panels, and the product quality of some companies has reached or exceeded the level of advanced countries.
After nearly 30 years of development, the aluminum composite panel industry has an output value of nearly 46 billion yuan in 2021. In the past ten years, the average annual growth rate is about 20%, and the aluminum composite panel industry has become a new economic growth point in the field of building materials for the national economy. At the same time, a number of enterprises with world-leading scale in production capacity, production equipment, production technology and product variety and quality have emerged.
The export of Huabond aluminum composite panel products has achieved substantial growth for more than ten consecutive years. In 2021, the products have been exported to 103 countries and regions, including developed countries in the world. It has realized the transformation from relying on imports in the early 1990s, to self-production and self-selling at the end of the last century, and then to a large number of exports at the beginning of this century.
Current Situation of Aluminum Composite Panel Curtain Wall Products
Compared with single-layer aluminum plate curtain wall and honeycomb aluminum plate curtain wall, aluminum composite panel curtain wall products have a series of advantages such as easy processing, economical and practical, and high quality. largest variety. It is this series of advantages of the aluminum composite panel curtain wall that has prompted the great development of the aluminum composite panel curtain wall in my country in just over 20 years. The picture shows the aluminum composite panel curtain wall project designed, processed and installed by my country. However, as for the current status of aluminum composite panel curtain wall in my country and a series of problems revealed, many are also caused by the abuse of these advantages.
Turn ease of machinability into shoddy
The ease of processing of the aluminum composite panel curtain wall is well known. It can be processed in the workshop or on-site according to the actual processing. The processing equipment can be completed with a formal cutting planer workbench or simple hand tools. It is precisely because of this feature that the current aluminum composite panel curtain wall products in my country have very irregular behaviors. Plastic core split and so on. The main reasons for these phenomena are as follows.
The slotting of the folding part of the aluminum composite panel is an important processing part to ensure that the aluminum composite panel has sufficient strength. It is strictly forbidden to hurt the back of the aluminum panel during the slotting process, and at the same time, there must be a plastic part not less than 0.3mm thick. However, in the current processing process, due to the inaccuracy of operation and equipment, the phenomenon of cutting the aluminum plate and causing the cracking of the folded part of the aluminum composite panel component often occurs, which greatly reduces the strength of the aluminum composite panel.
The assembly of the reinforcement ribs and stiffeners of the aluminum composite panel assembly is the key to ensure the strength and flatness of the aluminum torsion plate panel assembly. However, in the process of processing and assembling, there are many problems. For example, the design of the reinforcing side rib and the stiffening rib does not meet the requirements of the specification, the self-strength is not enough, and the number of the stiffening rib is insufficient. There are also many defects in the connection of stiffeners and stiffeners to the aluminum composite panel, especially the connection between the stiffener and the back of the aluminum composite panel has more problems. Since the aluminum composite panel cannot be connected to the stiffeners by electric welding screws, only structural double-sided adhesive strips or structural adhesives can be used for structural bonding. Both of these two bonding methods are required to operate according to strict operating specifications, otherwise the necessary bonding strength and benefits will not be achieved. At present, many aluminum composite panel components are not operated in accordance with the specifications, resulting in the failure of the bonding between the stiffener and the panel before the installation of the aluminum composite panel component, or within a period of time after the installation, so that the aluminum composite panel is under the action of wind load, convex and uneven, the strength is reduced, which seriously affects the use function of the aluminum composite panel.
Since the aluminum composite panel is made of two layers of aluminum panels inside and outside, the LDPE board is sandwiched inside, so in the process of use, it is strictly forbidden to directly expose the trimming or processing holes of the aluminum composite panel to the air without decoration and sealing, otherwise it will lead to Splitting of composite layers. Some construction units, in order to save materials, often use the aluminum composite panel directly without decoration, resulting in unimaginable serious consequences.
Turn economical and practical into low-cost products.
The reason why the aluminum composite panel curtain wall is economical and practical mainly comes from the price and easy processing performance of the aluminum composite panel product itself. As far as the price of the sheet itself is concerned, the price of the aluminum composite panel product itself is compared with the price of the aluminum honeycomb panel, and the aluminum honeycomb panel is usually more than twice the price of the aluminum composite panel. Compared with the finished aluminum plate assembly, the cost per square meter of the aluminum composite plate assembly is about 30% lower than that of the single-layer aluminum plate assembly. However, in order to meet the requirements of market competition and blind price reduction, many aluminum composite panel manufacturers and curtain wall manufacturers have serious cutting corners in the selection of materials. The surface of the outer aluminum plate must be treated with fluorocarbon coating. The reality is that the composition of the aluminum alloy panels of many aluminum curtain wall panels does not meet the requirements. The thickness of the outer aluminum panel is less than 0.4mm, while the thickness of the inner panel is reduced to 0.3mm. For exterior siding. Even the outdated cold-pressed board is used as the outer wall panel, and the result is that the panel and the composite plastic are separated due to insufficient bonding strength.
Treat high-tech products as low-end products
Due to the existence and influence of the above problems, the aluminum-plastic composite panel that should be a high-tech product and the aluminum-plastic composite panel curtain wall using the aluminum-plastic composite panel as the panel material have been regarded as unreliable or low-grade in people's minds. product. In the selection of curtain wall products, there are often many concerns. Some important or high-rise buildings generally no longer use aluminum composite panel curtain wall.
Future development of Aluminum Composite Panel
Regardless of the current application of the aluminum composite panel curtain wall, there are various problems, but due to its own inherent characteristics, the aluminum composite panel curtain wall will still be the main force of the aluminum panel curtain wall. However, if the existing problems are not correctly understood and corrected, it will bring immeasurable losses to the building curtain wall industry and the aluminum composite panel industry, and there will also be a large number of unsafe hidden dangers in the building exterior walls of our country. Analyzing the current problems, we should correct them from the following aspects.
The aluminum composite panel curtain wall is the common work of the aluminum composite panel industry and the building curtain wall industry, and it is also the management crystallization of the two industry authorities, so we should face up to the current problems and pay attention to them. Propose effective methods to overcome and improve, in order to eliminate the possible hidden dangers of building insecurity.
As an aluminum composite panel product manufacturer, it should produce in strict accordance with the aluminum composite panel exterior wall product standards, reject all improper requirements, and block the formation of substandard aluminum composite panel curtain wall products from the source of materials. In order to ensure the quality of special products for aluminum composite panel exterior wall, it is very important to revise the national product standard of "Aluminum-plastic composite panel". For the production process of aluminum composite panel products that are not suitable for aluminum composite panel curtain walls, such as cold-pressed plate technology, the use of aluminum composite panel products should be prohibited.
As a product's vitality, its most important part is to have new development, which includes the development of new materials, new processes, and new systems. In terms of materials, we can develop from how to further improve the stability, strength, heat resistance, heat insulation, flame retardant and other properties of aluminum composite panels. From the production of curtain wall products, we can develop more new products and new systems to meet the needs of different building structures. For example, the open aluminum composite panel curtain wall system, because its inner layer has the function of ventilation, if it is properly designed, it can reduce the use of materials, improve the physical properties of all aspects, and greatly reduce the wall caused by the silicone structural adhesive. surface stains, and enhance the three-dimensional sense of the wall.
It is absolutely unacceptable for some customers to lower prices indefinitely, resulting in unreasonable construction costs and damage to the quality and function of building curtain wall products. The final result is that the product image is damaged, and engineering safety hazards increase. units and the environment in which we live. We should call on the majority of investors and construction units, according to the law of the final value and the market economy, never blindly fixate on the word price, but should focus on the real connotation of the product, such as the materials used in the product, technology and manufacturing process, etc. The Chinese saying "you get what you pay for" is the eternal truth.
Sustainable Development of Aluminum Composite Panel Industry
For the healthy and sustainable development of the aluminum composite panel industry, it is necessary to take a comprehensive, coordinated and sustainable scientific development concept as a guide, and do a solid job in the following aspects:
1. Be sure to work hard to improve product quality.
Product quality is the life of an enterprise and the foundation of industry development. We must change the tendency to only focus on output and not on quality, and work hard on product quality.
2. The production of aluminum composite panels should be closely combined with market demand.
The main purpose of aluminum composite panels is to be used for building curtain walls and building interior and exterior wall decoration. Therefore, the development of aluminum composite panels should be based on the needs of the construction industry and architectural decoration industry. The road to development and common prosperity.
3. Actively play the role of the association.
The association should establish a scientific concept of development, enhance service functions, promote the concept of sustainable, rapid, coordinated and healthy development of the aluminum composite panel industry, give full play to the association's bridge, coordination, service and self-discipline functions, and create a good environment for the development of the aluminum composite panel industry.
4. Actively carry out technological innovation activities.
Promoting technological progress in the aluminum composite panel industry Technology is the basis for the development of the aluminum composite panel industry. Only with continuous technological innovation and progress can the aluminum composite panel industry be enduring for a long time. As a new type of decoration and decoration material, as an organic-inorganic composite material, although aluminum composite panel has many excellent properties, it still needs continuous development and progress, because the market and demand are not static, and the technology is constantly improving.
Future development and prospect of aluminum composite panel curtain wall
Although there are many problems and difficulties in the aluminum composite panel curtain wall, this is only an inevitable process in the development of things. As long as we can recognize him as soon as possible and solve it, coupled with the advantages of aluminum composite panel curtain wall itself and the application of new high-performance aluminum composite panel products and new aluminum composite panel curtain wall systems, we believe that the future of aluminum composite panel curtain wall should be broad. As one of the building curtain wall products, it is irreplaceable and will develop for a long time.
In addition, the foreign trade export of aluminum composite panels has doubled in the past ten years. Huabond has made great efforts to develop foreign markets. At present, the regions with more exports are Southeast Asia, South America, Europe and the United States, Middle East, Russia, Turkey, Africa and other regions. We believe that in the future, Aluminum composite panels produced by Huabond will appear more in various projects around the world.
