Rock wool is a kind of man-made fiber which is made of selected natural rocks and blast furnace slag as main raw materials, plus a certain amount of auxiliary materials and blown by high temperature melting. It has the characteristics of incombustibility, non-toxicity, low thermal conductivity, good sound absorption, good insulation, good chemical stability and long service life, and is recognized as an ideal thermal insulation material at home and abroad. Its main types are rock wool board, rock wool felt, rock wool shell, granular cotton and other products, and the highest service temperature can reach 600℃.
China market for external wall insulation is ready to go.
After 1970s, foreign countries generally attached importance to the production and application of building insulation materials, and strived to greatly reduce energy consumption, thus reducing environmental pollution and greenhouse effect. Foreign insulation materials industry has a long history, and insulation materials used for building energy conservation account for the vast majority. For example, in the United States, starting from 1987, the thermal insulation materials of buildings account for about 8 1% of all thermal insulation materials. Rock wool and granular cotton, as economical and practical insulation, fire prevention and sound absorption materials in industry and construction, have been widely used in all walks of life. More than 80% of rock wool products in Sweden, Finland and other western European countries are used for building energy conservation, while German law clearly stipulates that organic combustible insulation materials (such as polystyrene) are strictly prohibited for buildings over 22 meters, and most of them are used for external wall and roof insulation.
At present, building energy consumption has accounted for 27.5% of China's total energy consumption. In view of the importance of building energy efficiency, the Ministry of Construction has previously put forward three stages of building energy efficiency development goals: before 1996 (mandatory since 1988), 1980 ~ 198 1 year for local design of new heating residential buildings. Starting from 1996, we will save energy by 30% on the basis of the first stage, that is, by 50%, of which 30% will be realized by the thermal insulation performance of the building envelope, and the other 20% will be realized by improving the efficiency of the heating furnace and outdoor heating pipe network; From 2005 to the second stage, we will save energy by 30%, that is, 65%.
Previously, due to the failure of relevant departments to implement the 30% energy-saving standard, the awareness of building energy conservation has faded, and the market has not been hot. There are not many enterprises that really engage in external wall insulation and energy conservation. As the country pays more and more attention to the problem of building energy conservation, the industry of building exterior wall energy conservation and insulation is also paid more and more attention. All localities have made key arrangements for the real estate and construction industries, issued many relevant policies, and even refused to pass the audit for buildings that do not meet the energy-saving standards. Especially in China's "Eleventh Five-Year Plan" energy saving target, the contribution rate of building energy saving should reach 20%, that is, 654.38+200 million tons of standard coal should be saved. Tests from abroad show that the heat loss through the wall facade accounts for 50% of the external envelope, while the domestic ratio is 46%. Because external wall insulation plays an important role in building energy conservation, in order to implement the "Eleventh Five-Year Plan" energy conservation goal, in 2009, building insulation work will focus on external wall insulation. Recently, the authoritative international market analysis organization released the report of China's construction industry "China Building Insulation Market", which pointed out that from now on to 20 1 1, thanks to the vigorous development of China's construction market and the prevalence of insulation materials, it is estimated that the demand for insulation materials will increase at a rate of 9% every year, and it will reach RMB 2.84 billion in 201year. Thus, the whole building external wall insulation industry has ushered in an unprecedented opportunity, and the market momentum in China is strong.