Due to the continuous improvement of building technology, in order to increase the usability of space, modern buildings are gradually becoming denser and higher-rise. However, as the height of the building continues to rise, the external fire fighting and rescue capabilities in the event of a fire are relatively reduced. In view of the increasing number of fire notifications of high-rise buildings in recent years, and fireproof and refractory materials have become an essential element in planning fire prevention zones of buildings. In view of this, Covestro developed the Baydur Pultrusion polyurethane system, combining the characteristics of glass itself as a non-combustible material, to produce excellent performance glass fiber reinforced pultruded composite materials. This solution not only takes into account the basic airtightness, watertightness and sound insulation of doors and windows, but also has excellent fire resistance, heat insulation, environmental protection and energy saving and high strength and other characteristics; and with a new generation of water-based environmentally friendly polyurethane coatings Bayhydrol and Bayhydur can also be used for coating the surface of window frame materials, thereby improving the product's resistance to ultraviolet rays and anti-aging. At the same time, because of its low VOC emissions, water-based coatings have also become the first choice for healthy green building materials.
According to the Fire Department of the Ministry of the Interior, there were a total of 27,922 fires in Taiwan in 2018, and buildings ranked second among fire types with a total of 8,765. With the high number of fires in buildings in recent years, fire resistance and fire prevention have become one of the necessary considerations for building materials. Among them, the opening part of the fire prevention zone of the building plays a key role in the planning of the fire prevention zone of the building. However, compared with the traditional use of aluminum alloy or plastic as the main frame of doors and windows, when the fire occurs, the frame may deform due to the increase of temperature and the seal structure may fail, which raises concerns about fire safety.
In order to take into account the requirements of fire resistance inspection and environmental protection standards and mechanical properties such as stiffness and strength, Covestro launched Baydur Pultrusion glass fiber reinforced polyurethane composites, using polyurethane resin as the matrix resin and glass fiber as the reinforcing material, making good use of glass fiber Excellent flame retardancy and heat resistance. After the fire of polyurethane resin, a carbonized layer will be formed on the surface, which can prevent the flame from deepening and not melting, and does not generate droplets. The composite material has the excellent performance of both fire resistance and heat insulation.
Even if the fire side is subjected to high temperatures, it will be blocked by millions of glass fibers, making it difficult to conduct heat to the other side. In addition, during the processing of the composite material, the shrinkage in the thickness direction is less than 1%, the deviation from the design dimension is small, and the composite material has good dimensional stability. And because up to 80% of the material structure is glass, its expansion coefficient is much lower than aluminum alloy and PVC plastic, which can effectively avoid the dimensional deformation caused by thermal expansion and contraction, the switch is not easy and even the seal is not good. Yang Zhengyuan, Director of Polyurethanes Division, Covestro, Taiwan, said, "As the inventor of polyurethane materials, Covestro tries to combine different excellent materials in different materials to continue to provide innovative composite materials to the market. We hope to pass With regard to material expertise, it helps to reduce building safety concerns in the event of a fire. "
Baydur Pultrusion products have excellent fire resistance, and are durable and rust resistant. Excellent thermal insulation properties and high material stiffness. Polyurethane resin does not contain styrene, which greatly reduces the impact on the environment and human health. In view of the above technologies, Covestro and its partner Zhejiang Deyilong Technology Co., Ltd. have jointly developed and developed fire-resistant window products that have been successfully used in many real estate projects.
In order to improve the protection ability and beautiful decoration of the surface of glass fiber reinforced polyurethane type materials, Covestro has also developed the latest generation of water-based environmentally friendly polyurethane coatings Bayhydrol and Bayhydur. Its mild material, good applicability to the substrate, not easy to float fiber, and has excellent weather resistance, UV resistance and aging resistance. At the same time, because it is a water-based coating, it can be stored and transported as ordinary cargo. Compared with traditional solvent-based coatings, it can reduce VOC emissions by up to 80% during the construction process. It can also effectively improve the construction environment and reduce the construction process. Security concerns. In addition, it has excellent adhesion ability to the surface of glass fiber reinforced polyurethane material, which can effectively and uniformly cover and improve the surface flatness of the substrate; and can meet the diverse needs of surface decoration such as product color and gloss.