Open-cell polymer foam material and preparation method therefor

Abstract

The present invention provides a preparation method for an open-cell polymer foam material. The preparation method comprises the following steps of: a, weighing the following materials in parts by weight: 100 parts of polypropylene, 0.5-5 parts of a nucleating agent, 10-100 parts of ethylene-containing polyolefin and 1-30 parts of open-cell fillers; b, uniformly mixing polypropylene, the nucleating agent, ethylene-containing polyolefin and the open-cell fillers to obtain a mixture; adding the mixture into an extruder, and introducing supercritical-state carbon dioxide at a 1 / 5-1 / 3 part of a screw rod of the extruder; extruding and carrying out foaming to obtain the open-cell polymer foam material containing the open-cell fillers, wherein the open-cell polymer foam material contains the open-cell fillers comprising a plurality of first openings; and c, immersing the open-cell polymer foam material containing the open-cell fillers into an etching solution so as to etch the open-cell fillers to form a plurality of second openings, thereby obtaining the open-cell polymer foam material. The present invention further provides the open-cell polymer foam material. The open-cell polymer foam material has the advantages of a high open-cell ratio and good oil absorption ratio.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to an open-cell polymer foam material and a preparation method thereof. Background technique [0002] With the rapid development of industry and the continuous improvement of people's living standards, oil spills during oil exploration and transportation and a large amount of oily industrial wastewater have increased year by year. The problem of oil pollution has become more and more serious, seriously destroying the ecological balance of nature. 30% of the oil that pollutes the environment comes from industrial wastewater discharge, and 45% comes from oil tanker spills on the ocean. Leakage from offshore oilfield mining will cause large areas of sea area to be polluted, pose a threat to marine ecology, and bring great harm to the environment. [0003] At present, the main methods to deal with marine oil pollution include on-site burning oil slick method, salvage oil slic...

AI Technical Summary

Problems solved by technology

The polypropylene foam has an inherent open cell content of 40%, but the foam's open cell content is too low to be used as an oil absorbing material

[0008] It can be seen that the existing oil-absorbing materials have low porosity, and it is difficult to achieve high oil absorption ratio, and the preparation process is relatively complicated.

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