Adsorption material suitable for water-oil mixed environment

Abstract

The invention relates to the field of materials, and particularly relates to an adsorption material suitable for a water-oil mixed environment. The adsorption material consists of an oil holding layer and surface layers positioned at two sides of the oil holding layer, wherein the oil holding layer is a coarse polypropylene fiber melt-blown layer containing hydrophilic particles; the surfaces layers are formed by compressing inner layers and outer layers; the inner layers are fine polypropylene fiber melt-blown layers; the outer layers are thin non-woven cloth layers which have the surface density of 8-30g / m<2> and cannot defiber easily; compression patterns are also distributed on the outer layers; the inner layers and the outer layers are combined together via a plurality of pressing points. According to the invention, the oil adsorption material of a sandwiched structure, which has two compact surfaces and is loosened in the middle and variable in density, is prepared by adopting a melt-blown formation technique in combination with an ultraviolet compression technique; the hydrophilic particles are added in the melt-blown formation process, the prepared coarse polypropylene fiber also has a certain water absorption function on the basis of keeping the original high oil adsorption capability, and the adsorption material is suitable for specific water-oil mixing production links.

Description

Technical field [0001] The invention relates to the field of materials, in particular to an adsorbent suitable for use in a water-oil mixed environment. Background technique [0002] Various oils and hydrocarbons may leak during the process of mining, production, transportation and use. Once leaks occur, they will pollute the environment and cause harm to human health. In particular, marine oil spill accidents will cause damage to the marine ecology, and along with possible fires, it will pollute the atmosphere and cause a series of secondary pollution. To treat oil pollution on the water surface or soil, the use of oil-absorbing materials is the most common method. [0003] There are currently two types of common oil-absorbing materials. One is chemically synthesized oil-absorbing materials, such as polypropylene synthetic absorbent materials, which have good hydrophobic and lipophilic properties, but these oil-absorbing materials have poor oil-absorbing properties and are expens...

AI Technical Summary

Problems solved by technology

[0005] The existing melt-blown non-woven fabrics used for industrial adsorption on the market have the following defects: 1. Since the fibers of the non-woven fabric are very thin, they are easy to break, and the surface fibers are easy to fall off, so they cannot be used in an environment that requires a high degree of cleanliness. 2. The oil-absorbing materials used in industrial production are mainly designed to absorb pure oil, so they show strong lipophilicity and hydrophobicity, but in some specific production links, there are often situations where water and oil are mixed. In this case, it is necessary to use oil-absorbing materials to absorb oil first, and then take hydrophilic materials to absorb water. The operation process is cumbersome and time-consuming.

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