Rubber foam for absorbing metal ions in water and preparation method of rubber foam

Abstract

The invention relates to rubber foam for absorbing metal ions in water and a preparation method of the rubber foam and belongs to the field of high polymer materials. The rubber foam comprises the following components of, by weight, 20-80 parts of hydroxyl-terminated nitrile rubber, 20-40 parts of isocyanate, 0.5-3 parts of catalytic agents, 0.5-3 parts of foam stabilizers, 5-10 parts of foaming agents, 2-10 parts of open-hole agents and 5-20 parts of expanded graphite. The hydroxyl-terminated nitrile rubber and the isocyanate are reacted under the existence of the foaming agents and the catalytic agents to prepare the nitrile rubber foam so as to obtain the rubber foam which is capable of absorbing the metal ions in sewage, so that problems are solved that water is required to be led in a column and a large amount of the sewage is difficult to treat when adsorbent resins perform dynamic absorption in prior art, resin absorption amount is small, and the metal ions are complicated in recycling and difficult to treat when the adsorbent resins perform static absorption. According to the modified rubber foam, the nitrile rubber is made into a foam structure, the surface area is large, and the metal ions in the sewage are well absorbed.

Description

technical field [0001] The invention relates to a metal ion adsorbate in water and a preparation method thereof. Specifically, the invention relates to a rubber foam for absorbing metal ions in water and a preparation method thereof, belonging to the field of polymer materials. Background technique [0002] In recent years, as human beings are facing the increasing scarcity of available fresh water resources, people pay more and more attention to the treatment, recycling and reuse of wastewater, especially industrial wastewater. If our country can properly treat all kinds of wastewater, more than 10 billion tons of usable water resources can be added every year, which can greatly alleviate the current shortage of water resources in our country. Therefore, the research on industrial wastewater treatment technology has very important economic value and social value. [0003] It is an inevitable trend to develop a new class of adsorbents to treat metal ions in wastewater. [...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problem that the adsorption resin in the above-mentioned prior art cannot quickly, conveniently and effectively treat a large amount of sewage containing metal ions, and polyurethane foam cannot absorb metal ions in sewage, and provides a rubber foam for adsorbing metal ions and preparation method thereof, capable of quickly, conveniently and effectively adsorbing metal ions in sewage