Current situation analysis and development forecas

2022-10-21
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Current situation analysis and development forecast of external wall insulation Market in China

external wall insulation refers to making the structure on the outside of the main structure, which is equivalent to adding a "protective clothing" to the whole building. The main reason for this is that it can protect the main structure of the building and prolong the service life of the building; Increase the use area of commercial housing; Avoid the formation of heat dissipation channels for the exterior wall ring beam structural column beam doors and windows, and effectively prevent the "hot bridge" phenomenon that is difficult to overcome by the internal insulation structure. External insulation is a kind of insulation and energy-saving technology vigorously promoted at present. The state not only improves the technology and construction materials of external wall insulation, but also formulates relevant regulations at the legal level to assist

the promotion and application of building energy-saving wall insulation technology and products in China started in the mid-1980s. At that time, perlite, composite silicate, sepiolite and exterior wall insulation mortar compounded with silicone were the main products. In the early stage of wall insulation and energy conservation in northern China, these products occupied a large market. In 1996, in order to speed up the development of building energy efficiency, China issued the second step of 50% energy saving standard. With the improvement of energy-saving standards, the performance indicators of the above products have been difficult to meet the standard requirements. Most importantly, the enterprises engaged in the above products are generally small, the production equipment is too simple, the production process control requirements are not strict, and it is difficult to control the quality during the construction process, resulting in many problems in the project. Around 2000, the above-mentioned products gradually withdrew from the building energy-saving market in northern China. In recent years, with the rapid development of external wall insulation system technology and products, China's wall insulation and energy-saving technology has impressed developed countries such as Europe and the United States, which have carried out building energy conservation work decades earlier than China

after years of development, China's building energy-saving exterior wall external insulation market has developed into an industry with a wide variety of technical structures and huge demand for products. The systems popularized and applied in the market include foamed polystyrene board (EPS board) thin plastered external wall external insulation system, mechanically fixed foamed polystyrene board steel wire frame board external wall external insulation system, rubber powder polystyrene particle external wall external insulation system, foamed polystyrene board cast-in-situ concrete external wall external insulation system, extruded polystyrene board (XPS board) external wall external insulation system, rubber powder polystyrene particle composite external wall external insulation system Polyurethane (cast-in-situ, spraying and board) external wall external insulation system, expanded vitrified bead external wall external insulation system, wall self insulation system, composite insulation system and insulation decoration integrated system, etc

it is understood that polystyrene board (EPS board) thin plastered external wall external insulation system, rubber powder polystyrene particle external wall external insulation system and extruded polystyrene board (XPS board) external wall external insulation system are the systems with the most applications in the market, basically accounting for more than 75% of the domestic and foreign external wall insulation market. In addition, the external wall insulation system of mechanically fixed foamed polystyrene board, steel wire frame board, foamed polystyrene board cast-in-situ concrete external wall insulation system and polyurethane (cast-in-situ, spraying and board) external wall insulation system account for about 20% of the market share, and the total amount of other systems accounts for about 5%

according to incomplete statistics, so far, students involved in building energy-saving exterior wall external insulation system products have passed the alliance research and development special funds and project management measures, intellectual property management measures, scientific research project evaluation system, performance evaluation system, financial management system, and the number of production and sales enterprises nationwide reached 8000 (excluding raw material supply enterprises). Before 2001, There are less than 500 enterprises engaged in this field nationwide. According to the analysis of the national building energy-saving exterior wall external insulation Market in 2008, the total output value of the whole market is between 50billion and 60billion yuan (RMB, the same below), and the sales volume of the enterprise with the largest annual output value is about 320million yuan (including the sales of other auxiliary products of the enterprise); A few enterprises have annual sales of 200-300 million yuan, less than 2% have annual sales of 100-200 million yuan, less than 3% have annual sales of 50-100 million yuan, and more than 80% have sales of 7-30 million yuan. In other words, based on the current polystyrene board (EPS board) thin plastered external wall external insulation system of 100 yuan/square meter (including the price of the finishing layer), according to the sales volume of 200 million yuan, the external wall external insulation construction area is 2million square meters; According to the sales volume of 100million yuan, the construction area of exterior wall external insulation is 1million square meters; According to the sales volume of 50million yuan, the construction area of exterior wall external insulation is 500000 square meters. The annual sales volume of more enterprises is between 100000-300000 square meters. Among thousands of engaged enterprises, less than 10% are truly capable of technological development. There are few original technological products, and fewer enterprises have patented technology or technological products that have passed the provincial and ministerial scientific and technological achievements appraisal

from the above data, it can be seen that although there are a large number of enterprises engaged in external wall insulation and energy conservation in China, the problem of overall small scale is prominent, there are not many giant enterprises, and the overall technology research and development strength is insufficient. Although the external wall external insulation system technology has made remarkable achievements in a very short time, from the perspective of promotion and use, the most obvious problems are cracking, hollowing, falling off, water seepage, fire prevention, etc. The emergence of these insulation construction problems has sounded an alarm to the rapidly developing industry market. What is the reason

from the perspective of technology research and development, among thousands of wall insulation (mainly external wall insulation) enterprises, less than 5% have been engaged in business for more than 10 years, and more than 80% of enterprises began to set foot in 2003 or 2004. Among the enterprises that have been engaged for more than 10 years, most of them have strong technological R & D and innovation capabilities. Among the above 80% of enterprises, only a few enterprises have certain technological development and innovation capabilities. Most of the technical directors and managers of enterprises start to work alone after leaving the relevant enterprises. Such a derived business form basically lacks independent R & D capabilities, Most of them still stay in imitating domestic and foreign technologies and products, and lack of research on the basic theory of technology, the principle of structural measures and the mechanism of system formation. The so-called "system" products are not systems at all. Once there is low price competition in the market, or in order to save costs, they can only simplify the product structure at the expense of product performance, so that the project quality can not be guaranteed. After the emergence of these problems, some people attributed the root cause to the industrial market. Table 1 shows that the emission performance of typical polypropylene (PP) resins and additives has a low threshold of entry, and many enterprises that do not have the conditions compete on the same platform

analysis on the development of thermal insulation materials in China

thermal insulation materials have many kinds and a wide range of applications. Commonly used products include: glass wool products, vinan thermal insulation blanket, thermal insulation foam glass, polyurethane, etc

thermal insulation materials and products are an important factor affecting building energy conservation. The development and application of building thermal insulation materials have attracted more and more attention all over the world. After the 1970s, foreign countries generally pay attention to the production and application of thermal insulation materials in buildings, and strive to significantly reduce energy consumption, so as to reduce environmental pollution and greenhouse effect. The foreign thermal insulation material industry has a long history. The thermal insulation materials for building energy conservation account for the vast majority, and new thermal insulation materials are constantly emerging

before 1980, the development of thermal insulation materials in China was very slow, but after more than 30 years of efforts, especially after nearly 20 years of rapid development, many products have been developed from scratch, from single to diversified, and from low to high quality. A relatively complete variety of industries, mainly including expanded perlite, mineral wool, glass wool, foamed plastics, refractory fibers, calcium silicate thermal insulation products, have been formed

in 2006, China imported mineral cotton; Expansive mineral materials; The quantity of heat insulation or sound insulation material products is 13110148.00 kg, and the foreign exchange is 29396269.00 US dollars; In 2006, China exported mineral cotton; Expansive mineral materials; The quantity of heat insulation or sound insulation material products is 323873323.00 kg, and the remittance is 141929418.00 US dollars

in 2007, China imported mineral cotton; Expansive mineral materials; The quantity of heat insulation or sound insulation material products is 12844531.00 kg, and the foreign exchange is 28133066.00 US dollars; In 2007, China exported mineral cotton; Expansive mineral materials; The quantity of heat insulation or sound insulation material products is 293114475.00 kg, and the foreign exchange is 148816708.00 US dollars

polyurethane material is the best thermal insulation material in the world. Rigid polyurethane has many excellent properties, and is widely used as thermal insulation materials for roofs, walls, ceilings, floors, doors and windows of buildings in European and American countries. About 49% of building insulation materials in developed countries such as Europe and the United States are polyurethane materials, while in China, this proportion is less than 10%. It can be seen that there is still much room for the development of polyurethane materials in China. However, at present, polyurethane materials have begun to be questioned in a large area, believing that it is the culprit of the fire. The reason is that because of the recent "11.15" catastrophic fire in Shanghai, everyone is unanimously targeting polyurethane materials. However, according to Huicong, the reason for this tragedy is that the polyurethane foam thermal insulation materials used by the construction unit have not been flame retardant treated. If the polyurethane material used meets the national flame retardant standard, the combustibles will drop down and the fire will not jump up along the floor. In addition, there are many combustion aids on the scene, so that major tragedies occur under general circumstances

China has a large market for building energy-saving materials, especially building thermal insulation materials. The energy loss of housing in China is roughly 50% of that of walls; The roof accounts for about 10%; Doors and windows account for about 25%; Basement and ground account for about 15%. In order to achieve 50% energy-saving rate in China's construction industry in 2010, the external walls of buildings need to be comprehensively transformed, and the market for wall insulation materials will increase significantly

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