Full-bio-based high-durability super-hydrophobic cotton fabric and preparation method thereof

Abstract

The invention discloses a full-bio-based high-durability super-hydrophobic cotton fabric and a preparation method thereof. The preparation method comprises the following steps: carrying out roughening pretreatment on a cotton fabric; dipping the pretreated cotton fabric into an ethanol solution containing epoxidized soybean oil, sebacic acid and DBU, and then carrying out a curing reaction through catalysis of DBU; the treated cotton fabric is soaked in an ethanol solution containing stearic acid for esterification reaction, drying is conducted after soaking is finished, and the full-bio-based high-durability super-hydrophobic cotton fabric can be obtained. The full-bio-based high-durability super-hydrophobic cotton fabric prepared by the method not only has efficient hydrophobic capacity, excellent water-oil separation capacity and excellent self-cleaning capacity, but also adopts a full-bio-based reagent in the whole modification process of the fabric, so that the wearing safety of the modified cotton fabric is ensured; and the biological environmental protection property is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of functional cotton fabrics, and in particular relates to a fully bio-based high-durability super-hydrophobic cotton fabric and a preparation method thereof. Background technique [0002] Cotton fabrics have been widely used as eco-friendly oil / water separation matrices as superhydrophobic materials due to their renewable, biodegradable, low-cost, and good permeability properties. However, in practical applications, superhydrophobic cotton fabrics The mechanical durability is not high, the chemical durability is not high, the inherent properties of cotton fabrics change greatly during the modification process, and the reagents used cause great pollution to the environment, resulting in the prepared superhydrophobic cotton fabrics failing to meet the wearing requirements. In order to expand the application range of superhydrophobic cotton fabrics, it is necessary to develop an environmentally friendly fully ...

AI Technical Summary

Problems solved by technology

However, the grafting of superhydrophobic agents on cotton fabrics through the "access method" also has these disadvantages: first, in the process of preparing superhydrophobic cotton fabrics through the "access method", most of the grafted hydrophobic polymers For macromolecules, the grafting efficiency of hydrophobic polymers on cotton fabrics will be low (the grafting rate is about 10% to 15%). Second, the superhydrophobic cotton fabrics prepared by the "access method" may be Due to direct immersion in the hydrophobic polymer solution, some inherent properties of the fabric have changed

However, this method will not only affect the inherent properties of cotton fabrics such as air permeability, softness, etc., but also the inorganic particles used will also affect the environment, which has certain limitations in practical applications.

High-durability superhydrophobic cotton fabrics can be obtained by etching, but the superhydrophobic cotton fabrics prepared by this method also have certain problems in practical applications.

Although the surface roughness of cotton fabrics will be greatly improved after enzymatic etching or chemical etching, not only the mechanical strength of cotton fabrics will be greatly reduced after finishing, but the enzymes or acids used in the finishing process will also Harmful to organisms and the environment

[0007] At present, the shortcomings of superhydrophobic cotton fabrics on the market are poor durability, poor antifouling performance, low water-oil separation efficiency, and large pollution during the preparation process, which hinders its further application.

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