Just after the National Day, a message from the Beijing University of Chemical Technology came from the university and Anhui Chizhou Yingpai Science & Technology Co., Ltd. and Beijing Superchuck Haiqi Technology Co., Ltd. to jointly undertake the national "863" project topic - high transparent UV blocking nanometer Composite polymer film materials and industrial preparation techniques have passed acceptance. At present, the highly transparent nanocomposite film product enters the trial sale stage. The test results show that after the application of the glass door and window, the house can save more than 30% of air conditioning electricity consumption in summer. According to calculations, building energy consumption can be reduced by more than 10%.
According to Professor Chen Jianfeng of Beijing University of Chemical Technology, compared with the existing film preparation technology, the nanometer composite film preparation technology has the advantages of low production cost and large-scale production, and is easy to use. It is suitable for cold winter and hot summer weather conditions in China. The energy-saving transformation of the existing 43 billion square meters of buildings, as well as energy-saving in new construction, transportation and other fields.
Chen Jianfeng stated that China is the world’s second-largest energy consumer, with building energy consumption accounting for nearly 40% of the total energy consumption of the entire society, and energy consumption growing at an average annual rate of more than 5%. It is estimated that the energy consumption per square meter of buildings in China is about 3 times that of developed countries, and the peak load of air conditioners is equivalent to the full capacity of 10 Three Gorges Power Stations. In our country's building energy consumption, the energy consumption caused by the glass doors and windows accounts for 56% of the total heat dissipation of the building. Therefore, building glass energy conservation has become the key to building energy conservation.
To this end, the project team developed a highly dispersed technology for the preparation of highly transparent nanoparticle-based liquid phase dispersions, a step-by-step phase transfer method for preparing transparent polymer nanocomposite coatings, and a roll-coating method for preparing nanocomposite coating technologies, and overcame the scale Prepare a series of key technologies. Using the results of the project team, Beijing Zhongchao Haiqi Technology Co., Ltd. and Chizhou Yingpai Science and Technology Co., Ltd. respectively established a 100-ton/year inorganic nano-functional particle liquid dispersion production line and a 5 million-square-meter/year nano-composite polymer film demonstration. The production line achieved stable mass production.
Zeng Xiaofei, an associate professor at Beijing University of Chemical Technology, told the reporter that because the project team solved the problem of nano-scale dispersion of inorganic nanoparticles in the matrix of polymer membranes, the nanoparticles achieved a transparent monodispersion in the dispersion liquid with a solid content of more than 50% and stable dispersion. For more than one year, real nano-scale dispersion has been achieved, so the nano-composite film product produced maintains high transparency, and the visible light transmittance is more than 80%, which can save lighting electricity. Its UV and IR blocking ratios are greater than 99% and 90%, respectively, and have low thermal conductivity, which can reduce energy consumption due to thermal radiation and heat conduction, and can also protect humans and furniture. Due to product quality and energy saving effect, it has been recognized by the construction industry. The project team has signed a supply contract of 20 million yuan.
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