Welcome to Dalian Cheung Wang Seal Insulation Materials Co., Ltd.



Current location: Home > News > Industry news >


Throughout Chinese history insulation materials industry in decades

Author:Release time:2019-05-25 14:05

Ten years ago, China's thermal insulation materials were mainly perlite and rock wool thermal insulation materials. At that time, China's perlite factories mushroomed all over the country. Later, due to the construction link, low material strength, high water absorption rate problem is difficult to solve, and out of the Chinese insulation market. Later, organic materials such as polystyrene boards with lower thermal conductivity appeared, and then extruded boards, polyurethane and other organic thermal insulation materials occupied the domestic thermal insulation building materials market for nearly 10 years. It may be said that the mountain does not turn the water to turn, the organic material inherently exists the fire resistance poor flaw, will inevitably be eliminated by the market. And inorganic thermal insulation materials with fire nature, after solving the problem of waterproof, strength and green environmental protection weight will naturally reappear in front of people, is bound to become the development direction of thermal insulation materials.

1. Paying more attention to the moisture-proof and waterproof performance is an important development direction of thermal insulation materials. The water absorption rate of the material is an important factor that should be considered when choosing adiabatic material, the coefficient of thermal conductivity of room temperature launching is 23.1 times of air. Adiabatic material is absorbed after water not only can reduce its adiabatic performance greatly, and can accelerate the corrode to metal, it is very harmful. The void structure of thermal insulation materials is divided into connected type, closed type, semi-closed type, except for a small number of organic foam void is mostly closed type, other thermal insulation materials regardless of the void structure, the material itself is water absorption, plus connected void capillary permeability water absorption, so the overall water absorption rate is very high. At present, most thermal insulation materials in China do not hate water, high water absorption rate, so that the external protective layer of waterproof requirements is very strict, increased the cost of the external protective layer. At present, the silicone hydrophobic agent in the modifier is a kind of highly effective hydrophobic agent for thermal insulation materials. Its hydrophobic mechanism is to effectively change the surface characteristics of silicate materials by using the strong chemical affinity between organosilicon compounds and inorganic silicate materials to achieve the hydrophobic effect. It has the characteristics of good stability, low cost and simple construction technology.

2. Fire resistance of thermal insulation materials. In the past two years, building fires have occurred frequently, and thermal insulation materials outside walls have become the focus of people's attention. And thermal insulation materials in the emphasis on energy conservation and thermal insulation at the same time, the human life is bound to determine the development direction of thermal insulation materials. Strict implementation of the ministry of public security fire bureau issued 'no. 65 document' has been beyond doubt. Don't talk about the prevention of fire from the insulation system, material integrity and construction management and other aspects of the beginning of such as painless words. Improve insulation material fire performance, the state to give policy care, domestic A class insulation material can certainly develop rapidly.

Xinyang citic pearl saga factory by the research and development of A new class A fire insulation board project in xinyang started. The project is mainly under the charge of manager Yin taiyin, principal of citic in xinyang. The new product is featured by green environmental protection, fire prevention and energy saving, convenient construction, low cost and long service life, etc., and is highly valued by the cooperative units. The construction cycle of the project is 3 months, and the daily production of grade A fire insulation board is 20,000 square meters.

3. The research focus of inorganic thermal insulation materials (such as glass bubbles, etc.) should be on reducing the energy consumption in the production process, limiting the emission of dust and fiber, and reducing the amount of binder. Organic insulation materials (such as polystyrene foam insulation materials, polyurethane foam, etc.) should focus on finding a more suitable foaming agent to replace F11; Improve the flame retardant performance and reduce the production cost. Xinyang citic green environmental protection type inorganic energy conservation insulation material is a new type of energy conservation and environmental protection material applied to external wall insulation. This kind of inorganic thermal insulation material has excellent performance, such as sound insulation, fire prevention, thermal insulation, acid resistance, alkali resistance, impact resistance, good breathing, light green material, which is difficult to compare with other thermal insulation materials, the advantages are very obvious.

4, the development of multi-functional composite insulation materials, improve the thermal insulation efficiency and expand the application of products.

At present, the use of thermal insulation materials in the application have different degrees of defects: perlite moisture state, the presence of corrosive calcium oxide, and because of a long time to retain water, not easy to use in the low temperature environment; Glass fiber is easy to absorb moisture, is not suitable for low temperature environment, nor to above 540 ℃ temperature environment; Mineral cotton also has water absorption, not suitable for low temperature environment, can only be used in high temperature environment without water; Polyurethane foam and polystyrene foam is not suitable for high temperature, and flammable, shrinkage, gas generation; Because foamed glass is sensitive to thermal shock, it is not suitable for the condition of rapid temperature change. Therefore, in order to overcome the shortage of thermal insulation materials, many countries have developed lightweight multi-functional composite insulation materials.

As a manufacturer of insulation materials, we must grasp the direction of the market, research more in line with the market demand of products, in order to obtain the power of sustainable development.

Previous:Insulation materials market is regime change

Next:Polyurethane insulation materials in the building caulk sealing the application

Hot news: