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Hygroscopicity of ceramic fiber blanket

Hygroscopicity of ceramic fiber blanket

The ceramic fiber blanket is white in color and regular in size. It integrates refractory, heat insulation and heat preservation. Let’s take a look at its hygroscopicity:

The storage time in humid air can affect the moisture absorption rate of the fiber.

The mechanical properties such as tensile strength, fatigue and bending fatigue strength, and wear resistance of the textile properties of the fiber are closely related to the moisture absorption rate of the fiber.

When the moisture absorption rate of the fiber exceeds the allowable limit, the above mechanical and electrical properties are significantly reduced.

This is the main reason why the breakage rate increases sharply, the production efficiency decreases, and the product quality declines when the relative humidity of the textile workshop is too large.

Although the ceramic fiber blanket has a small water absorption capacity, since the specific surface area is very large, it is very important to control the relative humidity of the workshop.

The friction between the fibers and other solid materials in the textile processing generates static electricity, and the electrostatic phenomenon generated by the ceramic fiber blanket is more prominent than the natural fibers and the organic fibers. Since the static charge is repelled by the same sex, the fibers in the yarn are often loosened, and in severe cases, the production cannot be performed 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 is added to the mixture.

In summary, the textile performance of the ceramic fiber blanket has a side superior to that of the natural fiber and the organic fiber, such as the tensile strength of the monofilament; the deformation under the external force is small, the recovery ability is strong, and the stable shape and size can be maintained. .

At the same time, there are characteristics unfavorable to the textile processing technology, such as small elongation deformation, it is difficult to compensate for the difference in length caused by uneven tension; less flexibility and brittleness; poor resistance to torsion, bending fatigue and abrasion resistance In natural and organic fibers.

The above is the knowledge about the hygroscopicity of ceramic fiber blankets, I hope to help you.