Exterior wall insulation and energy-saving technology of buildings. Today, with soaring energy prices, let’s take a look at the progress of this technology. Huang Zhenli and his Beijing Zhenli High-tech Company are a company built on technology-intensive and advanced concepts. Recently, I heard that Americans are interested in his "double reduction" (that is, reducing the amount of garbage generated and reducing energy consumption). Quantity) corporate mission, and intends to cooperate with him to jointly promote this environmental protection project that brings benefits to human survival. The reporter hurriedly interviewed him at the New Metropolis Hotel in Beijing. Huang Zhenli told reporters that they have recently completed two scientific research projects on exterior wall insulation. One is "Research on the Causes and Control Technology of Cracks in Exterior Wall Insulation." This project is scheduled to be promoted by the Science and Technology Development of the Ministry of Construction on November 5. The center organizes expert appraisal; the other is that Zhenli Company will provide the main paper "Research on Exterior Wall Insulation and Waterproofing Technology" at the annual meeting of the China Waterproof Association. These two major topics are actually the result of the combination of theory and practice of Zhenli Company for many years. How can we create external insulation technologies and products with our own characteristics and become a leader in the innovation system in the technical field of the industry? Huang Zhenli believes that: First of all, we must proceed from national conditions. Production enterprises cannot obtain another resource by consuming limited resources. They should be based on comprehensive utilization of resources and do a good job in energy conservation. Secondly, most domestic building structures are mainly based on internal cast-in-exterior masonry, frame structures and fully cast-in-place structures. The research and development of building energy-saving wall insulation technology should be diversified to meet the needs of different regions; furthermore, it must Strengthen and increase basic research work to solve the technical bottleneck problems of wall cracks and wall waterproofing that restrict external insulation, otherwise it will bring a series of hidden dangers to the safety of the building.
Huang Zhenli believes that the current period is when the country pays the most attention to residential energy conservation. It is understandable to seize this favorable opportunity and vigorously develop building energy-saving products. However, regardless of whether there is any condition, the sudden rise will bring some new hidden dangers, and when the problems come out, they will be completely denied. This will have a certain impact on the formulation of industry policies and the healthy and orderly development of the industry. External insulation technology is not a simple energy-saving product, nor is it a single insulation material. Its technical content is very high, so technology should be put first and measures should be taken to ensure it. On the premise of continuously improving standards, we will strengthen its stability and safety. No one has ever put insulation on the wall before. The traditional method of insulation is inside the wall. In view of this, Zhenli Company has been engaged in research on exterior wall insulation technology since 1993. They have spent more than 5 million yuan to build the largest thermal insulation material research laboratory in the domestic and foreign exterior wall insulation industry, and gathered together doctors and A multi-disciplinary scientific research team, including , masters and many middle and high-level scientific researchers, independently developed and produced "ZL rubber powder polystyrene particle insulation material and its complete set of technologies", creatively proposing that "external insulation is better than internal insulation" , "Exterior wall insulation without cavity system method", "Anti-crack technical route of gradually changing the amount of flexible deformation layer by layer and releasing stress layer by layer" and "Protecting the main structure and extending the life of the building structure are the greatest energy savings." The idea of ????the main role of external insulation. At present, ZL complete technology has developed to include solvent-free rigid foam polyurethane, rubber powder polystyrene particle insulation slurry, cast-in-place concrete composite meshed polystyrene board, cast-in-place concrete composite mesh-less polystyrene board, pasted polystyrene board, pendulum Hammered rock wool boards, foam glass, etc. are the main insulation materials. There are more than 20 types with different characteristics. They are a complete set of exterior wall insulation technologies that can be applied to various base walls in different climate regions in China. Now, ZL technology has obtained 11 national patents, and has been evaluated as an internationally advanced technology and product by the Ministry of Construction. It has successively won the "National Torch Plan Project", "National Key New Product Project", and "Ministry of Construction Scientific and Technological Achievements Promotion Guide Project" , "National Comfortable Living Demonstration Project Selected Parts and Products" and many other certifications. There is a famous saying in "Three Steps to Energy Saving" and "Seven Negations": "Successful people are good at denying themselves, losers are good at denying others." Huang Zhenli always keeps this sentence in mind.
He never considers himself a winner. Success is just his goal. For a technology company, the goal is endless. Just like in his laboratory, scientific research will never stop for a moment.
The so-called "three-step energy saving", the first step is to achieve energy saving of 30%; the second step is to achieve energy saving of 50%; with the full implementation of the domestic target of 65% building energy saving in the third step, Zhenli Company conducted a more in-depth study, "ZL The successful application of "solvent-free polyurethane rigid foam spray exterior wall insulation technology" in the country's first 65% energy saving pilot project provides comprehensive technical support for the implementation of 65% energy saving.
In June this year, Zhenli Company successfully held an on-site meeting on the three-step energy-saving solvent-free polyurethane rigid foam spray exterior wall insulation technology in Beijing. This new technology has superior properties such as thermal insulation, crack resistance, waterproofing, weather resistance, pressure resistance, and a high level of construction mechanization. Once it was launched, it was highly praised by industry experts and was hailed as an advanced technology in line with the national policy of energy conservation. . ZL solvent-free polyurethane rigid foam exterior wall insulation technology is another patented technology independently developed based on General Manager Huang Zhenli’s seventh self-denial. As for the previous six self-denials, they all had their own arduous technical research and many touching stories. When tiles are pasted on exterior insulation walls, cracking and falling off has always been a major problem in the industry. This technology of Zhenli Company uses solvent-free polyurethane hard foam on-site spraying for main body insulation, and ZL rubber powder polystyrene pellet insulation slurry for leveling and supplementary insulation. , the facing can be paint or tiles. After 80 cycles from high temperature at 70oC to water spraying at 15oC and 20 cycle tests from heating at 50oC to freezing -20oC, the plaster layer and ceramic tile facings did not show cracks, hollowing, falling off, etc. Phenomenon has withstood various severe tests. You know, this kind of test means the equivalent of 25 years of service life in various harsh climates and environments. Beijing Shanshui Huihao Community, Beijing Changdao Lanqiao (National Building Energy Saving Demonstration Community), Shanghai Lijiang Shanshui Home, Tianjin Huachen Radiator Factory Energy Saving Demonstration Building, Xinjiang Huamei Wenxuan Home (National Building Energy Saving Demonstration Community) and other areas in the north, west and south More than 30 projects covering more than 1 million square meters of residential buildings have chosen Zhenli's latest technology, achieving a satisfactory energy saving of 65%.
Huang Zhenli also took the results of his "Seventh Self-denial" to Xinjiang, which has the worst climate, for experiments. The test results showed that under the climate conditions with an outdoor temperature of about minus 25 degrees, "ZL has no "Solvent polyurethane rigid foam spray exterior wall insulation technology" can keep the indoor temperature at about 20 degrees Celsius, making the indoor and outdoor temperature difference reach about 45 degrees, which is currently at the leading level in the country. Experts predict that with the further development of my country's building energy conservation work, polyurethane will "make great progress" in the construction field. Beijing Zhenli High-tech Company is not only at the forefront of domestic peers in research in this area, but also is superior in the acquisition of polyurethane raw materials. Most of the raw materials for the polyurethane external insulation materials they produce are obtained from the purchased waste polyurethane, polyester and other white foams. In recent years, they have sold approximately 600,000 cubic meters of white foam. On the one hand, it reduces the generation of garbage, on the other hand, it reduces energy consumption. These two major reductions, known as "double reductions", not only take a gratifying step towards completing the company's historical mission, but also arouse the interest of some developed countries such as the United States and Germany. The United States does not have deep processing technology for white foam waste. They often flatten polyester and polyester waste and export it to China. Therefore, they are very optimistic about Zhenli Company's waste recycling technology and plan to organize a delegation to Beijing for on-site inspection. This brings opportunities for Huang Zhenli's "eighth self-denial" because he wants to achieve the highest goal of energy saving of 85%.
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