Nano-copper regenerated cellulose fiber and preparation method thereof

Abstract

The invention provides a nano-copper regenerated cellulose fiber. The content of nano-copper of the fiber is 1.95%-9.65%. The invention further provides a preparation method of the nano-copper regenerated cellulose fiber. The method is characterized by comprising steps as follows: a nano-copper dispersion liquid is prepared as follows: a suspension is prepared by adding nano-copper powder and a dispersion agent to deionized water, wherein the nano-copper powder has the purity higher than or equal to 99.5%, the particle size D90 smaller than or equal to 1 mu m and the specific surface area ranging from 0.5 m<2> / g to 5.0 m<2> / g, and the electric conductivity of the deionized water ranges from 400 mu s / cm to 500 mu s / cm. In the process of preparation of the nano-copper regenerated cellulose fiber, agglomeration is avoided, spinning nozzles are not blocked, and the replacement rate of the spinning nozzles is reduced by 50%; under the condition that the nano-copper powder added to viscose accounts for 2%-10% of alpha cellulose in terms of mass fraction, the spinning nozzle replacement rate is lower than or equal to 0.9%, and requirements of viscose wet spinning are met.

Description

technical field [0001] The invention relates to a nano-copper regenerated cellulose fiber and a production method thereof, in particular to preparation of a regenerated cellulose fiber by blending nano-copper and a cellulose solution, and belongs to the field of fiber technology. Background technique [0002] With the continuous improvement of people's consumption level, the demand and requirements for clothing are also developing to a higher level and requirements, especially the use of industrial textiles is expanding, and the demand for environmentally friendly and healthy functional textile raw materials will increase significantly. In the process of a large number of modern scientific experiments and knowledge accumulation, scientists have discovered that copper metabolism is closely related to the rosiness, elasticity and delicateness of human skin. Both copper and iron are important raw materials for hematopoiesis. Copper is also a component of some metalloenzymes in...

AI Technical Summary

Problems solved by technology

[0005] 1. In the process of preparing nano-copper regenerated cellulose fibers, the physical and mechanical properties of the fibers are lower due to the addition of nano-copper;

[0006] 2. During the fiber preparation process, nano-copper is prone to agglomeration, blocking the spinneret holes, and seriously affecting the spinnability and finished fiber indicators;

[0007] 3. The combination of nano copper ions and fibers is not strong, and it is easy to fall off during the fiber preparation process, and the loss rate is relatively large;

[0008] 4. Nano-copper is easily oxidized in an acidic and alkaline environment, which reduces the functionality of the prepared regenerated cellulose fiber, and the color appears black, etc.

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