Open-cell polymer foam material for removing fluorine in water body as well as preparation method and an application thereof

A technology of foam materials and polymers, which is applied in the field of water defluoridation open-cell polymer foam materials and its preparation, which can solve the problems of secondary pollution and difficulty in recycling, etc., to prevent shedding, avoid secondary pollution, and maintain stable performance Effect
CN113244897AActive Publication Date: 2021-08-13TG HILYTE ENVIRONMENTAL TECHNOLOGY (BEIJING) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TG HILYTE ENVIRONMENTAL TECHNOLOGY (BEIJING) CO LTD
Publication Date
2021-08-13

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Abstract

The invention belongs to the technical field of organic materials, and particularly relates to an open-cell polymer foam material for removing fluorine in a water body as well as a preparation method and an application thereof. The open-cell polymer foam material provided by the invention is prepared by sequentially dipping open-cell polyurethane foam in a polyethyleneimine solution, dipping in a nano aluminum oxide-dopamine hydrochloride mixed solution and drying. The open-cell polymer foam is used as a medium, firstly, polyethyleneimine is used for improving wettability and hydrophilicity of the material, and then dopamine hydrochloride is used for endowing the material with underwater adhesion capacity, so that nano-scale activated aluminum oxide is effectively adhered. According to the invention, nano-scale active alumina with good adsorption and defluorination performance is adhered to a polymer material, so that the polymer material is endowed with a good function of defluorination in water, and the problem that a traditional small-particle water defluorination material is not easy to recover is solved; in addition, dopamine hydrochloride has a very strong adhesion function and can effectively prevent nano-particles from falling off, so that secondary pollution is avoided.
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Description

technical field

[0001] The invention belongs to the technical field of organic materials, and in particular relates to an open-cell polymer foam material for defluoridation of water bodies, a preparation method and application thereof. Background technique

[0002] Fluorine is one of the essential trace elements for the human body. Appropriate fluorine intake can promote human development; excessive intake of fluorine can cause serious diseases such as skeletal fluorosis and dental fluorosis, and cause harm to humans and animals, depending on Its intake and fluorine content in drinking water. The formation of fluoride pollution sources in water has both natural causes and human activities. On the one hand, since fluoride exists in several minerals, such as fluorspar, topaz, fluorite, cryolite, biotite, mica, citrine and other mineral composites, it can be filtered out by rainwater and pollute groundwater and surface water; On the other hand, wastewater discharged from vari...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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