China urgently needs to develop nano self-foaming shell ceramic insulation coating materials
"Energy Conservation and Thermal Insulation Technology" December 2012 No. 2 Senior Engineer Xu Weiguo
Since the thermal insulation rock wool and silicate insulation materials on the market are not high-temperature resistant, inconvenient in construction, and high in cost, organic insulation materials have high costs, are flammable, and in the event of fire, they burn and emit poisonous smoke, so they are greatly restricted. The use of the above materials.
Western developed countries have used nanotechnology to develop nano-technology 10 years ago, in addition to nano-Self-foaming shell ceramic insulation coating materials JR-CK. JR-CK was developed by the University of Berlin, Germany, 20 years ago. It is rapidly developed in Western countries, and its self-foaming ceramic insulation coating material JR-CK incorporates thermal insulation, heat insulation, waterproof, antisepsis , and sound insulation. It has a low thermal conductivity. With the features of less use, convenient construction and no pollution, it is widely used in the western developed countries for chemical industry, petroleum, metallurgy, pharmaceutical, thermoelectricity, construction, textile, printing and dyeing, military industry, aerospace and other industries. Temperature is -40°C-1900
Insulation of industrial equipment , pipelines , furnaces and kilns of any shape within °C, and is especially suitable for high-tech equipment, pipelines, valve bodies, aerospace and other high-tech fields where traditional insulation materials are difficult to perform, and reduces industrial energy consumption and reduction for Europe and the United States. Building energy consumption, saving energy, and reducing carbon emissions play a crucial role.
Nano self-foaming shell ceramic insulation coating materials have been developed using the characteristics of nano-materials such as nano-particles of inorganic oxide particles, large specific surface area, ultra-dense voids, low porcelainizing temperature, and strong activity.
Nano-thermal insulation coating material JR-CK main components: Zirconia, alumina, yttria, silica and other nanoparticles.
Insulation mechanism: After nano-alumina, nano-zirconia, nano-silicon oxide, nano-gallium oxide, etc. on the outer surface of steel plates, reactors, ceramics, roofs, buildings, etc., into the air, the surface activity of a variety of nano-oxide particles Aluminoxy, zirconium oxide, and decyloxy groups, due to their near-atomic size, recombine spontaneously, releasing oxygen, forming nano-ceramic bubbles, and continuing self-expanding shell chain reactions.
The resulting increase in thickness of the coating, there are many holes, the formation of nano-ceramic pores such as zirconia, alumina, titanium oxide, silicon oxide, antimony oxide alloy shell. The surface is a smooth nano-ceramic layer. Strength is strong. There are many holes and gaps in the interior to achieve an imaginary insulation effect.
Since the ceramic self-expanding shell ceramic nano-thermal insulation coating material is all inorganic oxides and has no organic matter, it does not burn and smoke. It will not burn or smoke like organic insulation at high temperatures. So it is more in line with modern fire safety requirements.
Nano self-foaming shell ceramic insulation coating material is all inorganic, so it can withstand temperatures up to 1700-2000 degrees or even higher temperatures. Therefore, there is a huge space for his use. Because it is a nano ceramic ceramic shell, it is extremely hard. With high strength, it can be used on the surface of industrial furnaces and industrial equipment.
Since the self-foaming chain reacts violently, very little coating is required and a very high coating thickness can be achieved. Greatly save resources and improve insulation effect.
Because it is a coating material,
The construction is very convenient, as long as it is coated, it is faster and more labor-saving than general rock wool silicate insulation. There is more excellent insulation effect. The construction is simple, the requirements are low, and everyone will construct it.
Other corners where thermal insulation materials are difficult to make insulation are places where heat is dissipated. Where the child can brush the coating, gently brush the self-foaming shell ceramic thermal insulation coating material JR-CK to form an ideal insulation layer. . Achieve excellent insulation effect, save a lot of energy costs.
In places where pipes, valves , corners, reaction vessels, etc. are not well insulated, it is easy to apply a layer of paint to achieve excellent insulation and heat insulation.
After self-expanding coating of JR-CK, a ceramic thermal insulation coating material for nanometer-scale self-expanding shells, the inner part of the self-expanding coating material has a lot of pores. The porosity is much higher than that of ordinary silicates and thermal insulation cottons. The effect is stronger than that of traditional thermal insulation layers.
Nanometer self-foaming shell ceramic insulation coating material JR-CK is to be composed entirely of alumina, zirconia, silica, and the like. Safe, non-toxic and environmentally friendly.
All inorganic, non-flammable, safer than organic insulation cotton, more conducive to fire and fire prevention. Applying a thin layer, it can expand several times the thickness, fireproof effect is better than ordinary silicate, aluminate fire retardant coating several times.
Expansion into a thick layer, to achieve the same insulation effect, you only need less insulation material. Lower cost. The strength of the coating after drying is very hard, high strength, much higher than the average cement, close to the ceramic appearance. And it has ceramic waterproof, anti-corrosion, anti-oxidation and high temperature resistance. Therefore, it is necessary for my scientific research workers to step up the development of nano-materials and develop nano-ceramic ceramic coating materials. It is of great significance for China to save energy and reduce consumption, reduce carbon emissions and improve environmental pollution.