A kind of environment-friendly composite material for preventing toxic gas and preparation method thereof

Abstract

The invention discloses an environment-friendly composite material for preventing toxic gases, comprising an outer cover layer, an adsorption and degradation layer and a skin-friendly layer arranged in sequence, the outer cover layer is located at the outermost layer; An adsorption-degradable fiber film is deposited on the inner surface of the cloth as an adsorption-degradation layer; the invention also discloses a preparation method of the environmental protection composite material. The invention comprises an outer cover layer, an adsorption and degradation layer and a skin-friendly layer sequentially arranged from outside to inside, and the skin-friendly layer has excellent moisture absorption, air permeability, skin-friendly and antibacterial properties; An adsorption degradation layer is deposited on the surface of the activated carbon layer; in the present invention, each raw material is green, environmentally friendly and easy to degrade, so as to obtain a kind of material that can not only block toxic gases and prevent toxic gases, but also integrate the advantages of physical adsorption and chemical adsorption. , to achieve rapid reduction of toxic gas concentration and continuous and stable decomposition of composite environmental protection materials.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to an environment-friendly composite material for preventing toxic gases and a preparation method thereof. Background technique [0002] Various toxic gases discharged from industry are potentially harmful persistent pollutants. The toxic gases in the air mainly include HCl, HF, SO 2 , H 2 S, NH 3 , HCHO et al. These toxic gases affect air circulation and have a stimulating effect on the human body, causing headache, nausea, vomiting, loss of appetite and other phenomena. High concentrations can cause hemolytic anemia and liver and kidney damage. The toxic gases will seriously threaten the safety of human air environment. , Considering the continuous dependence of human beings on the air environment, it is particularly important to find materials that can effectively prevent toxic gases. [0003] At present, the commonly used gas adsorption materials can ...

AI Technical Summary

Problems solved by technology

Although these adsorbents can adsorb toxic gases very well and have been widely used, their relative adsorption capacity is relatively low, the adsorption speed is slow, regeneration is difficult, the price is expensive, the service life is short, and the operation cost is high.

The other is chemical adsorption. The adsorption materials used for chemical adsorption mainly include ion exchange resins, ion exchange fibers, and photocatalysts. The chemical adsorption efficiency is high, but there are problems of not being durable and not easy to degrade.

[0004] Chinese patent CN201710039614.4 discloses a composite environmentally friendly material for preventing toxic gases and its manufacturing method. The composite material includes three layers: outer, middle and inner, wherein the outer layer is made of polyurethane and carboxyl polymerization; The middle layer is woven with carbon fiber; the inner layer is made of electrostatic polyethylene oxide modified spinning; the composite material has the advantages of good air permeability and moisture permeability, active adsorption of harmful particles, and strong filtering ability, but the composite material is mainly used in anti-toxic gas The most important is physical adsorption, which has the disadvantages of slow adsorption speed and incomplete adsorption.

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