Open-cell polymer foam material and preparation method therefor

A foam material and open-cell foam technology, which is applied in the field of open-cell polymer foam material and its preparation, can solve the problems of difficult to achieve high oil absorption ratio, complex preparation process, and low open cell ratio

Active Publication Date: 2015-10-28
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 t

Method used

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  • Open-cell polymer foam material and preparation method therefor
  • Open-cell polymer foam material and preparation method therefor
  • Open-cell polymer foam material and preparation method therefor

Examples

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preparation example Construction

[0027] The invention provides a kind of preparation method of open cell polymer foam material, it comprises the steps:

[0028] a Weigh 100 parts by weight of polypropylene, 0.5 to 5 parts by weight of nucleating agent, 10 to 100 parts by weight of polyolefin containing ethylene, and 1 to 30 parts by weight of open-cell filler;

[0029] b Uniformly mix the polypropylene, nucleating agent, ethylene-containing polyolefin and open-cell filler to obtain a mixture, then add the mixture into an extruder, and place the mixture in 1 / 5 to 1 / 3 is passed into supercritical carbon dioxide, extruded and foamed to obtain an open-cell polymer foam material containing open-cell filler, and the open-cell polymer foam material containing open-cell filler includes a plurality of first open cells ;

[0030] c. Immersing the open-cell foam material containing the open-cell filler in an etching solution, so that the open-cell filler in the open-cell foam material containing the open-cell filler i...

Embodiment 1

[0045] Weigh 100 parts by weight of polypropylene, 0.5 parts by weight of talcum powder, 30 parts by weight of linear low density polyethylene and 5 parts by weight of calcium carbonate.

[0046] The above-mentioned raw materials are dry mixed and added to the extruder; wherein, the screw speed is set to 30rad / min, the temperature in the first half of the screw is set to 190°C, and the temperature in the second half of the screw is set to 165°C; 10 parts by weight of supercritical carbon dioxide was injected into 4 places, the injection pressure was set at 15 MPa, and an open-cell polymer foam material containing open-cell filler was obtained by extrusion and foaming.

[0047] Then soak the open-cell polymer foam material containing the open-cell filler in dilute sulfuric acid solution with a molar concentration of 1.5 mol / L and etch for 16 hours to obtain the open-cell polymer foam material.

Embodiment 2

[0049] 100 parts by weight of polypropylene, 0.7 parts by weight of nanoclay, 80 parts by weight of linear low density polyethylene and 10 parts by weight of magnesium carbonate were weighed.

[0050] Dry mix the above raw materials and add them into the extruder; wherein, the screw speed is set to 50rad / min, the temperature in the first half of the screw is set to 210°C, and the temperature in the second half of the screw is set to 155°C; 12 parts by weight of supercritical carbon dioxide were injected into 4 places, the injection pressure was set at 18 MPa, and an open-cell polymer foam material containing open-cell filler was obtained by extrusion and foaming.

[0051] Then soak the open-cell polymer foam material containing the open-cell filler in a nitric acid solution with a molar concentration of 3.5 mol / L and etch for 20 hours to obtain the open-cell polymer foam material.

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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...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L53/00C08J9/12
CPCC08J2323/12C08J2353/00C08K2201/011C08L23/12C08L53/00C08L2205/03C08L2207/066C08L23/08C08K3/34C08K2003/265C08K2003/267C08K3/346C08K2003/262
Inventor 郑文革庞永艳王舒生王坤吴飞
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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