Green building materials, also known as ecological building materials, environmental protection building materials and healthy building materials, refer to healthy, environmental protection and safety building materials, also known as "healthy building materials" or "environmental protection building materials" internationally. Green building materials do not refer to individual building materials products, but to the evaluation of the "health, environmental protection, safety" quality of building materials. It pays attention to the impact of building materials on human health and environmental protection and the safety and fire performance. It has the properties of demagnetization, noise elimination, light adjustment, temperature adjustment, heat insulation, fire prevention and antistatic, and has special new functional building materials for regulating human body function.

Building materials for air purification

People spend most of their life indoors. In the new century, people's requirements for home environment are not only comfortable and clean, but also beneficial to physical and mental health. Many developed countries in the world, such as Japan, the United States, Western Europe and so on, have been committed to the research of environmental protection buildings and health care environmental building materials. The "photocatalytic material" developed by Japan is a revolution of purifying functional materials. Glass and ceramics are used as carriers, and TIQ photocatalyst is added. Under ultraviolet light, water and oxygen in the air are converted into active oxygen free radicals. These free radicals convert SO2, NOx and other polluting gases into harmless gases or acids.

Air purification glass fiber fluffy filter felt

The principle of photocatalyst is used to purify the air without power or chemical raw materials, only under the condition of ultraviolet ray. In order to improve the efficiency of photocatalysis, Osaka Prefecture University is studying photocatalysis under visible light. Ecodevice has recently invented a method of photocatalysis under visible light, that is, special treatment of TiQ2 surface with a certain material, which improves the photocatalytic effect by 10 times. This method is prepared to be used in wet solar cells and purifying functional building materials.

Many research departments, such as the Comprehensive Research Institute of resources and environment technology in Japan, Osaka Prefecture University and other research departments have carried out field experiments on the wall of NOx purification function, and it is predicted that it may be practical in the near future. Mitsubishi material began to produce photocatalyst brick - "weeds" in 1999. It is reported that there are 15 exclusive chain stores with an annual output of 9 million square meters and a price of 12000 yen per square meter. The purification effect of NOx can reach 80%. Japan's otashi is a natural purification material with deodorization and moisture absorption functions. In addition, zeolite and iron porous materials can be used as air purification materials, but they can not solve the problem of long-term use. Up to now, only photocatalytic purification technology can purify the air for a long time.

Health antibacterial building materials

In nature, the conversion of inorganic matter into organic matter mainly depends on plant photosynthesis, and microorganisms play a major role in the conversion of organic matter into inorganic matter. Therefore, in addition to gas, water and ground environment, ecological environment also includes microbial environment. However, the hidden danger and threat of microorganism to human health can not be ignored. According to the statistics of the World Health Organization in 1998, the death toll caused by bacterial infection was 17 million in 1995. In 1996, a nationwide outbreak of E. coli O-157 infection in Japan once caused worldwide panic. Therefore, Japan has set off a "antibacterial fever", not only in hospitals, public places and housing, but also in daily necessities and production tools.