With the continuous development of science and technology, according to the State Council’s “Mid-term and long-term development plan for China’s railways”, in order to meet the rapidly growing demand for passenger transportation, China will establish rapid passenger transportation between capital cities and large and medium-sized cities and plan the rapid development of “four vertical and four horizontal” railways. Passenger traffic and three intercity rapid passenger transport systems. It is estimated that by 2020, the construction of high-speed railways with speeds of 200 kilometers and above in China will exceed 18,000 kilometers and will account for more than half of the total mileage of the world's high-speed railways. As high-speed railways have a much higher requirement for railway performance than conventional railway lines, they provide a vast space for high-performance materials, including waterproof coatings, especially for high-performance polyurethane waterproof coatings. The “high-speed rail” plan will Speeding up the development of China's waterproof coating market.

Taking the Beijing-Shanghai high-speed railway under construction as an example, the Beijing-Shanghai high-speed rail will have a total length of 1,318 kilometers and seamless lines and ballastless tracks will be laid all over. Infrastructures such as railway lines, traction power supply, and communication signals adopt various environmental protection measures such as vibration reduction, noise reduction, low energy consumption, and low electromagnetic interference. 80.5% of the Beijing-Shanghai high-speed rail is a bridge, and it is estimated that the total amount of waterproof works will reach 2 billion yuan. Waterproof sprayed polyurea waterproof coating material for Beijing-Shanghai high-speed railway bridge deck, a total of 12 packages (JN01~JN12), material consumption of more than 20,200 tons, of which, 868 tons of aliphatic polyurethane surface coating; high-speed polyurethane waterproof coating 6707 tons. In addition, the protective engineering of polyurea materials in the Beijing-Tianjin High-speed Rail project reached 950,000 square meters, and the amount of polyurea was more than 2,000 tons.

At present, China's polyurea technology has reached the international advanced level, and has been widely used in the construction, the main venue for the 11th National Games that has just ended, the Jinan Olympic Sports Center known as "Eastern Xiliu" and the 11th National Games. The stadiums of most of the stadiums are protected by polyurea. The Beijing-Tianjin high-speed rail and Beijing-Shanghai high-speed railway base waterproofing projects are all performed by domestically-made sprayed polyurea elastomers. As a leading project for stimulating domestic demand, high-speed rail projects have important implications for driving the domestic market demand for waterproof coatings.

Especially in the aftermath of the financial crisis of 2009, under the prevailing demand in the international market, the paint market has turned its attention more to China. The strong domestic demand in the Chinese market has also been seen as a key opportunity for economic crisis recovery. Spraying polyurea elastomer technology as a new solvent-free, non-polluting green coating technology following high solids coatings, waterborne coatings, UV-curing coatings, and powder coatings is an important coating technology that has emerged this year. We are delighted to see that in recent years, the domestic polyurea spray technology has developed rapidly. Still taking Beijing-Shanghai high-speed rail as an example, there are domestic excellent waterproof technology companies such as Guangzhou Xiupei and Dongfang Yuhong winning the bid. It shows that the domestic polyurea waterproof coating technology can already meet the requirements of high-speed rail important projects.

Different from traditional railways, high-speed rail adopts ballastless track, requiring the waterproof layer not only has the basic performances of anti-seepage and anti-cracking, but also can withstand the impact brought by high-speed, heavy-duty, alternating impact and other trains running at high speed. These special requirements require the use of high-performance waterproof coatings. As a newly emerging type of waterproof coating, polyurea coatings have been gradually promoted in China in recent years. Compared with common coatings, the use of "polyureas" has been used for a longer period of time. Without toxicity, it is known as “the greatest discovery in the coating technology field at the end of the 20th century”. Spray polyurea materials are not affected by the ambient temperature and humidity during construction. They can be quickly spray-formed on any curved surface, inclined surface and vertical surface without sagging. The construction is convenient and the efficiency is very high. The design thickness can be achieved in one construction. It is a good choice for waterproof treatment of ballastless track with more irregular sections. At the same time, spray polyurea has excellent water resistance, corrosion resistance, abrasion resistance, impact resistance, resistance to cracking, UV resistance and high and low temperature resistance, which meets the special requirements of high-speed rails. The application of high-speed railway waterproofing projects has become a stage for polyurea waterproof coatings.

In the entire paint market share, industrial coatings, including automotive coatings, marine coatings, road and railway coatings, accounted for about 70% of the total, while the remaining 30% were architectural coatings. Because of the closer connection between architectural coatings and people's lives, it has attracted more public attention. In the field of architectural coatings, the gap between domestic paint brands and foreign brands is well known. However, in the field of industrial coatings that occupy a larger market share, it seems that it has not received due attention. s concern. In fact, the competitiveness of domestic industrial coatings in the international market is even more worrying than architectural coatings.

China vigorously promotes the environmental protection certification of building waterproof coatings

Architectural waterproof coatings have become one of the most important waterproof products for home decoration and construction. Consumers attach great importance to their environmental performance. China Building Waterproofing Material Industry Association will implement the waterproofing coating toxic and hazardous substance limited certification work. This work is to better implement the national “four-section environmental protection” policy, and at the same time better implement the “Restrictions on Harmful Substances in Waterproof Coatings” standard (standard number: JC1066-2008), and promote the production of more waterproof coating production enterprises. Environmentally-required products expand the market share of environmentally-friendly waterproof coatings and promote the healthy development of the waterproof industry.

Products that pass the waterproof coating toxic and hazardous substances limited certification can enhance consumers' confidence in product procurement, enhance product competitiveness, and create better economic benefits for enterprises; also can be used in government agencies, demand-side procurement tenders or insurance agencies. When accepting product insurance, the company has a strong competitive edge; it is conducive to eliminating technical barriers, expanding trading partners, and opening up the international market.

Certified products will receive a national authorized certification mark. The certification work is performed by the Suzhou Workstation (CTC Suzhou Workstation) of the China Building Materials Inspection and Certification Center located at the Suzhou Waterproof Materials Research and Design Institute of China Chemical Building Materials Corporation. The station is responsible for the national environmental protection certification of building waterproof coatings, and also accepts the certification of all the waterproof material products and the quality management system of the production enterprises (including the certification of system, transfer of certification business to CTC), including the acceptance of certification, Reporting, organization and factory site audits.

China will vigorously popularize the application of architectural waterproof coatings

In the past ten years, the state has vigorously advocated new types of building waterproof materials, and has continuously eliminated and limited backward technical products. It is reasonable to say that the waterproof quality of buildings should be greatly improved, but in fact, the leakage situation is still more serious.

Causes of leakage are due to design, construction, management, and other factors, but the counterfeiting of waterproof materials is also an important cause of leakage. At present, the waterproof material market is in a state of turmoil, and fake and shoddy products are filling it.

In the next 10 years, SBS and APP modified bitumen waterproofing membranes will continue to be the leading products and will be developed in accordance with the requirements of the National Building Materials Bureau's “Catalogue of New Building Materials and Products Guidance” and market trends; Polymer waterproof membranes will focus on the development of EPDM and PVC. (P type) Two kinds of products, and actively develop TPO products; waterproof coating prospects are promising polyurethane (especially one-component) and acrylic; sealing material is still focused on the development of silicone, polyurethane, polysulfide, acrylic four categories; waterproof Insulation materials, rigid waterproof materials, anti-seepage and plugging materials, metal roofing materials, asphalt shingles, and geotechnical materials will have a certain market. Other materials will go along with the market, but we must adhere to the principle of helping the superior and eliminating the inferior and improving the overall level of waterproofing. We must resolutely resist and severely crack down on fake and shoddy products. In the next ten years, we will also vigorously improve material support and construction technology.