Polycrystalline mullite fiber (PMF) is a new ultra-light and high temperature resistant fiber at home and abroad. It is a Al2O3-SiO2 ceramic fiber. The use temperature is 1500-1600 degrees, that is, 200-300 degrees.crystal fiberThe manufacturer states that the polycrystalline mullite fiber is a unique polycrystalline refractory fiber in the form of a mullite crystal phase. The manufacturing process is complex and the technical content is high. It is completely different from the preparation process of glass fiber. It is prepared by chemical "colloid method" and is chemically formulated according to the formation of single crystal-mullite (3Al2O3, 2SiO2). Composition: AL2O372%, SiO228%. The principle is that soluble aluminum and silicon are made into a colloidal solution with a certain viscosity, the liquid is spun by conventional methods, and then high-temperature heat treatment is carried out to complete the crystal phase transformation and obtain mullite fibers. The resulting fiber cotton (loose) can be used as a filling material for interlayers at high temperatures, and the loose cotton can be wet vacuum formed to produce PMF fiber series, such as fiberboard, fiber blanket, optical fiber module, etc.

crystal fiber

   crystal fiberAccording to the manufacturer, the polycrystalline mullite high temperature resistant plate is made of imported polycrystalline mullite fiber by wet forming and drying. Small shrinkage, low thermal conductivity, good quality. The working temperature is 1700 ℃, and the conventional working temperature of 1900M is 1750 ℃.

So, do you know what are the characteristics of polycrystalline mullite fiber? Below with crystal fiber manufacturers to understand.

1, is widely used in metallurgy, machinery, ceramics, electronics, petrochemical, aerospace and other fields of high temperature industrial furnace and other thermal equipment lining insulation.

2. Polycrystalline mullite fiber can achieve the purpose of saving energy and increasing production, reducing the temperature difference in the furnace, improving product quality, reducing the consumption of spare parts, extending the life of the furnace and improving the working environment.

3, due to the polycrystalline mullite fiber loose porous, with low thermal conductivity, high blackness coefficient characteristics, coupled with its high temperature stability and quench and heat resistance is good, at present in the high temperature furnace used in the face of the increasingly widespread, its energy saving effect is very show.

4. The energy-saving effect when used in high-temperature furnace windows is better than that of ordinary refractory bricks or high-temperature coatings, and the amount of energy saving is much greater than the amount of heat loss.

5, not only because of the reduction of heat loss, but mainly due to the strengthening of the furnace gas to the furnace wall convection heat transfer, so that the furnace wall can get more heat, and then through the radiation to the material, thereby improving the heating speed and production capacity of the material.

　　6、crystal fiberThe manufacturer said that the energy-saving effect of polycrystalline mullite fiber when used in high-temperature furnace windows is better than that of ordinary refractory bricks or high-temperature coatings, and the energy-saving amount is much greater than the heat loss, not only because the heat loss is reduced.