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A kind of polypropylene modified polyurethane sponge and its preparation method and application

A polyurethane sponge, polypropylene technology, applied in separation methods, grease/oily substance/float removal devices, liquid separation and other directions, can solve problems such as easy imbalance, secondary pollution, inflexible oil absorption devices, etc. Install simple effects

Inactive Publication Date: 2017-02-22
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to: (1) solve the secondary pollution problem caused by the existing oil-absorbing materials; (2) overcome the deficiencies of the existing oil-absorbing devices which are inflexible, easy to unbalance and unable to continuously absorb oil; (3) have no saturated adsorption problem, simply by changing the oil slick receiver container to achieve continuous oil absorption

Method used

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  • A kind of polypropylene modified polyurethane sponge and its preparation method and application
  • A kind of polypropylene modified polyurethane sponge and its preparation method and application
  • A kind of polypropylene modified polyurethane sponge and its preparation method and application

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Effect test

Embodiment 1

[0025] The present invention adopts dipping coating method to modify polyurethane sponge to obtain polypropylene modified polyurethane sponge, which specifically includes the following steps: dissolving polypropylene particles (melt index: 12g / 10min) in two In toluene, a polypropylene-p-xylene solution was obtained, wherein the mass ratio of polypropylene to p-xylene was 1:500; after the polyurethane sponge was ultrasonically washed with acetone for 5 minutes, it was taken out and dried and immersed in the polypropylene-p-xylene Put in the xylene solution for 5 seconds, take out the polyurethane sponge and dry it in an oven at 120° C. to obtain the above-mentioned polypropylene-modified polyurethane sponge.

[0026] The water drop contact angle of the polypropylene-modified polyurethane sponge was measured using a contact angle measuring instrument DSA 100 (KRŰSS, Germany). First, the polypropylene-modified polyurethane sponge was placed horizontally on the contact angle measur...

Embodiment 2

[0028] Dissolve polypropylene particles (melt index: 12g / 10min) in p-xylene in an oil bath at 125°C to obtain a polypropylene-p-xylene solution, wherein the mass ratio of polypropylene to p-xylene is 1:100; After the polyurethane sponge was ultrasonically washed with acetone for 8 min, it was taken out and dried and immersed in the polypropylene-p-xylene solution for 10 s. After the polyurethane sponge was taken out, it was dried in an oven at 115°C to obtain the above polypropylene-modified Polyurethane sponge.

Embodiment 3

[0030] Under an oil bath at 127°C, dissolve polypropylene particles (melt index: 12g / 10min) in p-xylene to obtain a polypropylene-p-xylene solution, wherein the mass ratio of polypropylene to p-xylene is 1:300; After the polyurethane sponge was ultrasonically washed with acetone for 10 minutes, it was taken out and dried and immersed in the polypropylene-p-xylene solution for 15 seconds. After the polyurethane sponge was taken out, it was dried in an oven at 125°C to obtain the above-mentioned polypropylene-modified polyurethane sponge.

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Abstract

The invention relates to a continuous oil absorption device for removing oil slick, a polypropylene modified polyurethane sponge which is applied to the oil absorption device and has super-hydrophobic performances, and a preparation method of the polypropylene modified polyurethane sponge. The continuous oil absorption device comprises an oil absorption material, a vacuum pump, an oil absorption pipe, an oil conveying pipe and an oil slick receiving container, wherein the adopted oil absorption material is the polypropylene modified polyurethane sponge with strong hydrophobic and lipophilic properties. The principle of the continuous oil absorption device is that under the condition of negative pressure, the oil slick is collected in a receiver after penetrating through the high-selectivity oil absorption material, and water can not penetrate through the oil absorption material. In the oil absorption process, the continuous cleaning of the oil slick can be achieved only by replacing the oil slick receiving container. The oil absorption device is especially suitable for treatment of water-surface oil leakage accidents, and is simple and convenient to operate.

Description

technical field [0001] The invention relates to a polypropylene modified polyurethane sponge and its preparation method and application, belonging to the fields of water pollution and oil-water separation. Background technique [0002] With the development of offshore oil development and transportation, oil spills on the sea surface occur from time to time. This has not only caused a waste of oil resources, but also caused ecological environmental problems and water pollution. At the same time, the discharge of some wastewater containing organic matter also poses a certain threat to the ecological environment. Therefore, rapid oil-water separation is of great significance. [0003] The Chinese patent "An Oil-absorbing Material and Its Preparation Method" (Application No. 201210152706.0) discloses an oil-absorbing material prepared from polylactic acid, but the oil-absorbing material is inconvenient to be reused and the oil-absorbing process is inconvenient. The Chinese pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/42C02F1/40C08L75/04
Inventor 彭磊于萍罗运柏
Owner WUHAN UNIV
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