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What problems often occur in the processing of chemical fiber blankets


The chemical fiber felt is often subjected to various external forces such as stretching, crimping, and torsion during the processing process, which causes the fiber to change its original shape. Because wool has good elasticity, it tries to return to its original shape. Therefore, various stresses are generated in the fiber. This internal stress needs to be gradually attenuated and eliminated over a long period of time. It is often used in the processing of wool products. Cause difficulties, which is also one of the factors that cause the size and shape of wool products to be unstable during processing and use. The plasticity of wool refers to the property that the internal stress of wool can be rapidly attenuated under humid and hot conditions, and the existing shape can be changed according to the action of external force, and the shape can be maintained by cooling or drying.

  The main part of wool fiber is the cortex layer composed of cortical cells. Wool felt cortex cells contain high-sulfur and low-sulfur proteins. The former is the main component of the matrix, and its molecular chain is amorphous and curled; the latter’s molecular chain has a helical structure and forms basic fibrils (protofibril) in cortical cells. . The basic fibrils are then composed of microfibrils, and the microfibrils are further composed of fibrils. Various fibrils are embedded in the tomb, and the fibrils and the authenticator can be connected by disulfide bonds. Some research data pointed out that the diameter of fibrils in cortical cells is about 0.25m, the diameter of microfibrils is 7.5nm (75A), and the diameter of basic fibrils is about 2nm.


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