Method for preparing super-hydrophobic flame-retardant flexible material from water-dispersed nanocellulose compound

By introducing nanoscale silica, methyl trimethoxysilane and polyvinyl alcohol into the water-dispersible plant nanocellulose composite, superhydrophobic flame retardant flexible materials are prepared, which solves the complexity and resource waste of water removal in the prior art, and achieves efficient and environmentally friendly oil-water separation and flame retardant effects.

CN119661897AActive Publication Date: 2025-03-21BEIHUA UNIV
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Patent Information

Application Number
CN202510188152.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-20
Publication Date
2025-03-21
Estimated Expiration
2045-02-20

AI Technical Summary

Technical Problem

The prior art has problems with the use of harmful or expensive precursors, complex processes and equipment in removing organic pollutants in water bodies, and is seriously wasteful of resources and environmental pollution.

Method used

By using water as a dispersible medium, a water-dispersible plant nanocellulose composite is prepared, combining nanoscale silica, methyltrimethoxysilane and polyvinyl alcohol to form a superhydrophobic flame retardant flexible material. The material is prepared by freeze-drying to form a three-dimensional superporous structure, achieving flame retardant and efficient oil-water separation.

Benefits of technology

It achieves high elasticity, high oil absorption, reusability, fire resistance and degradability, reduces production costs, avoids air pollution and fire hazards caused by volatility of organic solvents, broadens the application fields and improves safety and circulation stability.

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Abstract

The invention relates to the technical field of hydrophobic flame-retardant materials, and discloses a method for preparing a super-hydrophobic flame-retardant flexible material from a water-dispersed nanocellulose compound, which comprises the following steps: preparing a nanocellulose suspension; synthesizing silicon dioxide nanoparticles; preparation of a precursor suspension: mixing SiO2 nanoparticles, methyltrimethoxysilane and the nanocellulose suspension in proportion, and carrying out a reaction to obtain the precursor suspension; preparing a polyvinyl alcohol solution; preparing a water-dispersible plant nano cellulose compound mixed solution, and freezing the water-dispersible plant nano cellulose compound mixed solution; and carrying out freeze drying treatment and heat treatment on the frozen material to obtain the super-hydrophobic flame-retardant flexible material. According to the method for preparing the super-hydrophobic flame-retardant flexible material by adopting the water dispersible nano-cellulose compound, the material preparation process is green and pollution-free, and the prepared flexible material has the characteristics of high elasticity, high oil absorbency, reusability, fire resistance, degradability and the like, and can be applied to various fields.
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