Preparation and application of kapok fiber-based elastic foam material

Abstract

The invention relates to the technical field of an adsorption material, and aims at providing preparation and application of a kapok fiber-based elastic foam material. The preparation comprises the following steps of taking kapok fiber; putting the kapok fiber into a reaction kettle; adding a glutaraldehyde solution so that the kapok fiber solution is completely soaked and is continuously soaked; raising the temperature to perform a hydrothermal carbonation reaction; after the reaction is completed, performing natural cooling to obtain blocky brown elastic materials; performing soaking and rinsing firstly by deionized water and then using absolute ethyl alcohol until the final soaking liquid is colorless and transparent; after the natural drying, obtaining the kapok fiber-based elastic foam material. The preparation has the advantages that the raw material sources are rich; the price is low; the defects of a conventional method for preparing carbon-based materials can be overcome. Compared with a high-temperature carbonization treatment process, the preparation has the characteristics of simple preparation process, low production cost and the like. The prepared elastic hollow foams with hydrophilic and oleophilic characteristics have good hydrophilic performance on the basis of maintaining the original oleophilic performance; the obvious adsorption effect can be achieved on various kinds of dye in oil, organic solvents and water solution; the repeated utilization rate is high.

Description

Technical field [0001] The invention relates to an adsorption material technology using biomass as a carbon source, in particular to the preparation and application of a kapok fiber-based elastic foam material prepared by hydrothermal carbonization. Background technique [0002] As the process of industrialization continues to accelerate, the environment on which mankind depends for survival has been heavily polluted. Pollution involves water bodies, air, soil, etc. Among them, water pollution is mainly caused by the leakage of dyes, crude oil and refined oil. [0003] Macroscopic materials constructed from carbon-based materials (such as sponges, foams, aerogels, hydrogels and other carbon-based materials) have a wide range of applications in the fields of adsorption and separation, environmental remediation, etc., causing them to cause This is of great interest to researchers. Carbon nanotubes and graphene with large specific surface area and unique electrochemical properties ...

AI Technical Summary

Problems solved by technology

If the original kapok fiber is directly used as the absorbent material, its absorption utilization rate is very low and it cannot be reused again

Currently also available in N 2 The technology of carbonizing raw kapok fiber at 1000°C under protection to make it a superhydrophobic material. Although this material has the properties of reusability, fire resistance, and superhydrophobicity, it has weak adsorption capacity for organic solvents under the same volume. Preparation Disadvantages such as complex process technology requirements and high production costs

At the same time, because of its super-hydrophobic properties, it cannot absorb pigments dissolved in water.

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