Ceramic fiber blankets as refractory insulation materials are mainly used in high temperature industrial furnaces, high temperature pipelines, etc. Its texture is soft, elastic, high tensile strength, excellent processing performance and construction performance.
Storage time in humid air will affect the moisture absorption rate of fibers. Mechanical indicators such as tensile strength, fatigue, bending fatigue strength and abrasion resistance, which mark the textile properties of fibers, are closely related to the moisture absorption rate of fibers. When the moisture absorption rate of the fiber exceeds the allowable limit, the above-mentioned mechanical and electrical properties will be significantly reduced. This is the main reason for the sharp increase in the rate of end breaks, the decline in production efficiency and the decline in product quality when the relative humidity in the textile workshop is too high.
Although the water absorption capacity of the ceramic fiber blanket is small, it is very important to control the relative humidity due to its large specific surface area. The friction of fibers with other solid materials in textile processing will generate static electricity, and the static electricity generated by ceramic fiber blankets is more prominent than both natural fibers and organic fibers. Due to the repulsion of the same sex by electrostatic charges, the fibers in the yarn are often loosened, and in severe cases, the production cannot be carried out normally. Therefore, the air is usually kept at a certain relative humidity to facilitate the elimination of static electricity. At the same time, an antistatic agent should be added to the mixture.
The textile performance of ceramic fiber blanketis better than that of natural fiber and organic fiber, such as the tensile strength of monofilament is large; under the action of external force, the deformation is small, the recovery ability is strong, and it can maintain a stable shape and size. At the same time, there are characteristics that are not conducive to the textile processing technology, such as small elongation deformation, it is difficult to compensate for the length difference caused by uneven tension; small flexibility and high brittleness; torsion resistance, bending fatigue resistance and wear resistance are all inferior. for natural and organic fibers.
We all know the hygroscopicity of ceramic fiber blankets. It is a well-loved environmentally friendly material for people in the industrial high temperature manufacturing industry.
