Rock wool, also known as rock wool, is a kind of mineral cotton, the natural rock and mineral raw materials made of fine fiber short fluffy.
In 1970s, it is widely used in metallurgy, machinery, building materials, petroleum and chemical industry. The natural rock, ore and other raw materials, in the melting furnace (cupola melting temperature below 2000 DEG C), with strong pressure of 50bar blowing and quenched into fibrous. Or with silk, will melt flow off in multistage rotary rotor, by centrifugal force thrown into fibers, generally 3 to 9 microns in diameter, density 50 ~ 200 kg /m, thermal conductivity at room temperature 0.029 ~ 0.046 w / m, at 600 DEG C for 0.111 ~ 0.145 w / m, not burn, not mildew, not boring. According to the use of ordinary wool (temperature less than 900 DEG C); high temperature (higher than 900 DEG C) rock wool. High quality wool temperature 1250 to 1400 DEG C. Rock wool, mineral wool can be made into strips, belt, rope, fire board felt, blanket, mat, cushion, tube and plate. For single crystal furnace, metallurgical casting, oil cracking and technology of ablation resistant, high temperature resistance and heat insulation materials; construction equipment and sound absorption materials, insulation materials and insulation materials; and natural asbestos substitute cement products, rubber reinforcing materials and high temperature sealing material, high temperature filter material and high temperature catalyst carrier etc..
Cotton is a natural rock such as Xuan Wuyan, gabbro, dolomite, iron ore, bauxite as main raw materials, inorganic fiber by high temperature melting, fibrosis and made.
Slag wool is made of industrial slag, blast furnace slag, phosphorus slag, fly ash and so on. The two kinds of fibers are processed, and the fireproof board can be made into plates, pipes, felt, belts, paper, etc., and can be used for the insulation, fire prevention, thermal insulation, sound absorption, shock resistance, etc. of the building and industrial equipment, pipelines and kilns.
Product performance:
Insulation performance: rock wool insulation [1], slag wool products, basic properties, thermal conductivity at room temperature are usually in the range of 0.03 ~ 0.047W/ (moK).
Combustion performance: rock wool, slag wool products of combustion performance depends on how much the combustible adhesive. Rock wool, slag wool belongs to inorganic silicate fiber, nonflammable, in the manufacturing process, sometimes adding organic binder or additives, will influence the combustion performance of these products.
Sound insulation performance: rock wool, slag wool products with excellent sound insulation and sound absorption performance, the sound absorption mechanism is this kind of products with the porous structure, when sound waves through, because of the effect of flow resistance of friction, part of the sound energy is absorbed by the fiber, hampered by the acoustic wave transmission.
Rock wool market demand
Rock wool, which is a kind of exterior insulation materials. When in the organic insulation materials market share up to 90% of the drift is reached as exterior wall external insulation fireproof grade inorganic material rock wool has ushered in a hitherto unknown market opportunity.
Rock wool prices by 42 yuan / square meters soared to 200 yuan / square meters. Even so, the market demand is still in short supply.
The rock wool material prices, policy adjustment is the direct cause. With the fire in recent years, Shanghai, Shenyang and other places, so that the current use of a large number of external wall thermal insulation of organic materials. The fire department issued the "notice" on further clarifying the relevant requirements of fire supervision and management of civil construction exterior insulation materials, civil construction insulation materials into building fire safety design review, fire inspection and record test range, and the civil building exterior insulation materials must be reached.
Product features:
High compressive strength, tensile strength and durability index, the long-term stability and reliability of the product performance.
Rock wool is not burning, not heat and toxic smoke, fire can effectively isolate the flame spread, fire performance excellence.
Thermal insulation performance is superior, can improve the building envelope thermal resistance value, reduce building heating and air conditioning energy consumption, energy saving and emission reduction.
Carbon steel, aluminum, copper and other metal materials and various components of the building are not corrosive.
The efficient noise reduction and elastic vibration eliminating physical properties.
No moisture absorption, aging resistance, long term stability.
Light weight, can be cut sawing, easy processing.
Construction points:
Rock wool exterior insulation system:
For the construction of energy-saving insulation engineering should be carried out in accordance with the construction plan design document review and approval by qualified for energy-saving project special construction scheme of rock wool board external insulation system.
Should have professional production enterprises of rock wool board external insulation system of on-site guidance in the construction process, and construction units and construction quality control work on-site supervision.
Materials must be in accordance with the specifications, quantity and quality requirements after acceptance to be stored, and should be taken care of, is strictly prohibited open-air stacking. Curtain wall rock wool board should be moisture-proof overhead stacking.
Plastering construction should meet the following requirements:
Rock wool board paste after surface treatment with plaster surface plate, scraping the mortar on the surface coated with a stainless steel spatula, and pressed into the surface of the fiber in wool board.
Mortar should be configured in strict accordance with product instructions, configuration of the adhesive should avoid direct sunlight, and should be used within 2h.