Development status of domestic rigid foam polyurethane waterproofing and thermal insulation integrated roofing technology-TMPDA-Tetramethylpropylenediamine

Current status of building roof energy conservation in my country At present, building energy conservation has become a major issue that our country attaches great importance to. Central leaders have repeatedly emphasized that we must pay full attention to the importance and urgency of saving energy resources, earnestly seek development from saving resources, and vigorously develop energy-saving residences. , promote and popularize energy-saving technologies, and put energy conservation at the forefront of energy strategy.
According to relevant expert analysis, by 2020, if all urban buildings meet energy-saving standards, 335 million tons of standard coal can be saved every year; the peak load of air conditioning can be reduced by 80 million kW, which is equivalent to my country’s new power capacity in the five years from 1988 to 2002. The total is equivalent to the power generation of 4.5 Three Gorges Dams, or equivalent to the country saving 1 trillion yuan in investment in power construction every year. For the construction and building materials industry, building energy conservation is an urgent matter.
At present, the existing building area in urban and rural areas of our country is about 42 billion m2. For roofs, building heating heat consumption is 2.5 to 5.5 times that of developed countries with similar climate conditions. Roof heat loss accounts for about 9% of the total heat loss of buildings, and energy consumption is too high. .
With the continuous improvement of people’s living standards, the requirements for thermal comfort of buildings are also getting higher and higher. However, at present, the vast majority of building roofs in my country cannot achieve energy-saving effects. To achieve indoor comfort, heating and air conditioning must be increased. usage rate, that is, more energy costs will be paid. Our country is facing a relative shortage of resources and poor resource recycling. Therefore, it is a very urgent task to improve the thermal insulation and waterproof performance of roofs and effectively meet energy-saving standards.
Promote the application of thermal insulation and waterproof roofing systems. Waterproof and thermal insulation is a complete system on building roofs. Since waterproof materials and thermal insulation materials are two systems, waterproof materials basically have no thermal insulation function, and thermal insulation materials cannot be waterproof. In practical applications, insulation failure due to leakage of waterproofing quality and water content in the insulation affecting or destroying the waterproofing layer often occur. Failed projects have caused strong dissatisfaction in society and brought about economic loss that cannot be ignored. Since roofing materials are not recyclable, the renovation of roofing projects will also generate a large amount of construction waste and increase the overall cost. Promoting the application of waterproof and thermal insulation integrated roof systems is an effective way to solve this problem.
The application of rigid foam polyurethane waterproof and thermal insulation integrated materials in my country started late. In 1997, German technology and equipment were introduced and the Sino-German joint venture Sanli Waterproof and Insulated Engineering Co., Ltd. was established. It is dedicated to promoting the application of rigid foam polyurethane waterproof and thermal insulation integrated roofs in China. system. Several research and construction units in different regions of the country are also constantly exploring and practicing. So far, this material has been used in the country for more than 8 years. It has completed millions of square meters of roofing projects. It has remarkable waterproofing, insulation and energy-saving effects, and has been favored by various relevant parties. aspects of attention. Research and application show that the rigid foam polyurethane waterproof and thermal insulation integrated roof system is a successful example of roof waterproofing and thermal insulation systems. It organically combines different functions into one to form a highly reliable roof system, solving the problem of roof leakage and thermal insulation and insulation. The common problem of waterproofing interacting with each other also makes the roof have a long-term energy-saving effect.