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Method for preparing novel super-hydrophobic polyurethane oil-water separation material with no solvent

An oil-water separation and super-hydrophobic technology, which is applied in separation methods, liquid separation, chemical instruments and methods, etc., can solve problems such as pollution, poor mechanical stability, and a large number of environments, and achieve an environmentally friendly effect

Active Publication Date: 2016-01-20
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this improved method has problems such as poor mechanical stability or the need for a large amount of solvent, which is likely to cause environmental pollution.

Method used

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  • Method for preparing novel super-hydrophobic polyurethane oil-water separation material with no solvent
  • Method for preparing novel super-hydrophobic polyurethane oil-water separation material with no solvent
  • Method for preparing novel super-hydrophobic polyurethane oil-water separation material with no solvent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017]

[0018] Weigh each component according to the above ratio, ultrasonically dissolve 2.11g of stearic acid in 10.00g of polyether 330, and dissolve 1.48g of water, 0.14g of silicone oil, and 0.13g of caprylic acid at a temperature of 35°C and a speed of 1000r / min. Add stannous and 0.04 g of diethylenetriamine to the above mixture and stir for 1 min. Quickly add 6.85g of toluene diisocyanate at 35°C, stir for 5s, transfer the reaction solution to a beaker, the foaming process begins, take it out after 10min and place it in a 60°C oven for 4h to obtain a superhydrophobic polyurethane foam . The surface contact angle of the obtained superhydrophobic polyurethane was 153.5°; the contact angle of oil (hexadecane) was 0°.

Embodiment 2

[0020]

[0021] Weigh each component according to the ratio described in the present invention, ultrasonically dissolve 3.07g stearic acid in 10.00g polyether 330, and dissolve 1.48g water, 0.14g silicone oil under the conditions of 40°C and 1200r / min at a temperature , 0.13 g of stannous octoate, and 0.04 g of diethylenetriamine were added to the above mixture and stirred for 3 min. When the temperature is 40°C, 6.88g of toluene diisocyanate is quickly added, and after stirring for 5s, the reaction solution is transferred to a beaker, and the foaming process begins. After 10 minutes, it is taken out and placed in an oven at 50°C for 4 hours to obtain superhydrophobic Polyurethane foam. The surface contact angle of the obtained superhydrophobic polyurethane was 157.5°; the contact angle of oil (hexadecane) was 0°.

Embodiment 3

[0023]

[0024] Weigh each component according to the ratio described in the present invention, ultrasonically dissolve 60.00g of stearic acid in 300.00g of polyether 330, and dissolve 15.75g of water and 4.20g of silicone oil at a temperature of 30°C and a speed of 1000r / min. , 4.20 stannous octoate, 0.9 g diethylenetriamine were added to the above mixture and stirred for 5 min. When the temperature is 30°C, 190.20g of toluene diisocyanate is quickly added, and after stirring for 10s, the reaction solution is transferred to a beaker, and the foaming process begins. After 15 minutes, it is taken out and placed in an oven at 50°C for 6 hours to obtain superhydrophobic Polyurethane foam. The surface contact angle of the obtained superhydrophobic polyurethane was 154.0°; the contact angle of oil (hexadecane) was 0°.

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Abstract

The invention discloses a method for preparing a novel super-hydrophobic polyurethane oil-water separation material with no solvent. The method comprises the following steps that stearic acid is dissolved in polyether330 through ultrasound, water, silicone oil, stannous octoate and diethylenetriamine are added on the conditions that the temperature is 30-40 DEG C and the rotating speed is 1000-1500 r / min, and stirring is carried out for 1-5 min; at the temperature of 30-40 DEG C, toluene diisocynate is added, and a reaction solution is foamed after 5-10 s; after foaming is carried out for 10-15 min, the product is taken out to be placed in a drying oven with the temperature of 50-70 DEG C and treated for 4-6 h to obtain the super-hydrophobic polyurethane foam. The defect that a large amount of solvent is used in a traditional preparation method is overcome, the raw material sources are wide, and super-hydrophobicity, super-lipophilicity and mechanical property stability are achieved through the polymerization reaction of gel materials, foaming materials and modified materials.

Description

technical field [0001] The invention relates to a solvent-free method for preparing a new type of superhydrophobic polyurethane oil-water separation material. Specifically, the superhydrophobic property is introduced into the polyurethane system during in-situ polymerization, thereby changing the wettability of polyurethane. The polyurethane material can be used In the field of oil-water separation. Background technique [0002] With the development of human society, oil spill incidents occur frequently, which endanger the environment on which human beings depend for survival. To solve this problem, people have used a series of materials such as inorganic adsorbents, natural fibers and other materials to absorb oil on the water surface, but these materials have poor selectivity, which affects practical applications. [0003] In order to solve the problem of poor selectivity, a series of new adsorbent materials such as carbon fiber gel, graphene sponge, carbon nanotube spong...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/022
Inventor 张招柱葛博门学虎李永
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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