Green technology upgrades facilitate the low-carbon development of prefabricated buildings.

Against the backdrop of the construction industry's comprehensive push for green and low-carbon transformation, prefabricated building materials, with their core advantages of low energy consumption, low pollution, and high efficiency, have become a key tool for energy conservation and carbon reduction in buildings. Sandwich panels, as the core material of prefabricated building envelopes, continuously reduce carbon emissions throughout their entire life cycle through raw material optimization, production process innovation, and recycling technology upgrades. With their excellent energy-saving, environmentally friendly, and low-carbon characteristics, they are widely used in various green projects such as green factories, ultra-low energy consumption buildings, and ecological venues, becoming a low-carbon benchmark product in the prefabricated building materials field.

Traditional building envelope construction methods often employ on-site masonry, spraying, and insulation layer splicing processes, which have drawbacks such as high construction dust, excessive construction waste, poor thermal insulation, and high maintenance costs. In contrast, new environmentally friendly sandwich panels adopt an integrated composite structure, combining metal panels with environmentally friendly flame-retardant core materials. They are finished products upon leaving the factory, requiring no secondary processing, and embodying green principles throughout the entire process from production to construction. The raw materials used are formaldehyde-free, non-volatile environmentally friendly core materials and high-performance environmentally friendly adhesives, free of harmful substances. No pollutants are released during construction and use, fully meeting green building material standards.

Production process innovation further solidifies the low-carbon attributes of sandwich panels. Industry enterprises have completely eliminated high-energy-consuming and high-polluting intermittent production processes, adopting fully automated closed production lines, effectively reducing dust, exhaust gas, and waste emissions during production. Simultaneously, through precise raw material proportioning, waste heat recovery, and waste recycling and reprocessing technologies, production energy consumption and resource depletion are significantly reduced. Waste sandwich panels can be dismantled, separated, and recycled for reuse, effectively reducing solid construction waste and aligning with the concept of a circular economy in construction. Compared to traditional wall materials, overall carbon emissions are significantly reduced.

In terms of energy-saving applications, high-quality sandwich panels possess excellent thermal insulation and sound insulation performance. The dense microporous structure of the core material effectively blocks the conduction of hot and cold air, reducing building heating and cooling energy consumption and significantly lowering energy consumption for long-term building operation and maintenance. Meanwhile, the panels are highly airtight, waterproof, and moisture-proof, effectively reducing problems such as mold and water seepage in walls and extending the service life of building envelopes. As the green building evaluation system continues to improve, the application scenarios for low-carbon and energy-saving prefabricated sandwich panels are constantly expanding, providing solid material support for the green transformation and energy conservation and carbon reduction of the construction industry.