Wet gradient honeycomb structure fiber membrane for medical and health protection and preparation method thereof

Abstract

The invention relates to a wet gradient honeycomb structure fiber membrane for medical and health protection and a preparation method thereof. The preparation method comprises the steps that firstly,electrostatic spinning is carried out on a first spinning solution composed of a hydrophilic polymer, a nanoscale metal organic framework, a first cross-linking agent and a first solvent, and an insulating material subjected to charge elimination treatment is taken as a receiving base material to obtain a first membrane; a second spinning solution composed of an intermediate polymer, a second cross-linking agent and a second solvent is then subjected to electrostatic spinning, and the first membrane is taken as a receiving base material to obtain a second membrane; and a third spinning solution composed of a hydrophobic polymer, a third cross-linking agent and a third solvent is subjected to electrostatic spinning, the second membrane is taken as a receiving base material to obtain a thirdmembrane, the composite fiber membrane is obtained, and finally, the composite fiber membrane is subjected to heat treatment to obtain the wet gradient honeycomb structure fiber membrane for medicaland health protection. The finally prepared membrane has a three-layer composite structure, the microstructure is in a three-dimensional honeycomb communication channel structure, and the single-direction moisture conductivity and the reverse barrier liquid penetration performance are excellent.

Description

technical field [0001] The invention belongs to the technical field of electrospinning functional fiber materials, and relates to a wetting gradient honeycomb structure fiber membrane for medical protection and a preparation method thereof. Background technique [0002] With the development of science and technology and the improvement of hygiene level, people have higher and higher requirements for the safety, comfort and protection of clothing fabrics. In some cases, it is necessary to use protective clothing to avoid or reduce the damage of toxic and harmful substances in the environment to the human body. For example, medical protective clothing is used to prevent external blood splashes and protect medical staff from infectious substances such as viruses. However, the existing medical protective materials are usually unable to take into account the high-efficiency safety protection and moisture absorption and perspiration performance. Commonly used protective materials ...

AI Technical Summary

Problems solved by technology

[0005] However, the above materials focus on improving their unidirectional moisture transfer performance, ignoring the reverse osmotic pressure of the material, and the thickness of the fiber membrane is generally <0.5mm. In the case of a lot of sweating, the fiber is easy to absorb water and swell to block the capillary channels, which is difficult to meet the practical application in the field of protection. need