Color-changing adsorption material

Abstract

The invention relates to the field of a material, and particularly relates to a color-changing adsorption material. The adsorption material consists of an oil holding layer and surface layers which are arranged at two sides of the oil holding layer, wherein a color-changing layer is arranged in the middle of the oil holding layer, and the oil holding layer is a coarse polypropylene fiber melt-blowing layer; each surface layer is formed by pressing an inner layer and an outer layer, the inner layer is a fine polypropylene fiber melt-blowing layer, the outer layer is a thin nonwoven fabric layer with the surface density of 8 to 30g / m<2> and with fibers being unlikely to drop, the outer layer is also provided with pressed patterns, and the outer layer and the inner layer are composited together by a plurality of press points. The polypropylene fiber melt-blowing nonwoven oil absorption material which is of a sandwich structure and has two dense surfaces, sparse middle part and the variable density is produced by adopting the melt-blowing forming technology in conjunction with an ultrasonic pressing technology, the color-changing layer made from color-changing silicone is additionally arranged in the middle of the oil holding layer, the adsorption material can absorb oil and also can absorb water in the oil absorption process by utilizing the characteristic that the color is changed when the silicone encounters the water; moreover, the color of the material can be changed according to the absorption quantity, so that whether the adsorption material needs to be replaced or not can be judged by a user.

Description

technical field [0001] The invention relates to the field of materials, in particular to a color-changing adsorption material. Background technique [0002] Various oils and hydrocarbons may leak during the process of exploitation, production, transportation and use. Once leaked, it will pollute the environment and bring harm to human health. In particular, marine oil spill accidents will cause damage to marine ecology, and with possible fires, they will pollute the atmosphere and produce a series of secondary pollution. To deal with oil pollution on the water surface or soil, the use of oil-absorbing materials is the most common method. [0003] At present, there are two types of common oil-absorbing materials. One is chemically synthesized oil-absorbing materials, such as polypropylene synthetic adsorption materials, which have good hydrophobicity and lipophilicity, but these oil-absorbing materials have poor oil absorption performance and are expensive. The other type i...

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.

3. During the use of the existing adsorption materials, the amount of adsorption cannot be displayed intuitively, and there is no obvious change before and after adsorption saturation, which brings inconvenience to the use

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