Preparation method for hydrophobic lipophilic polyurethane sponge

A polyurethane sponge, hydrophobic and lipophilic technology, applied in the field of preparation of hydrophobic and lipophilic polyurethane sponge, can solve the problems of hidden dangers of human beings and marine organisms, failure to realize oil-water separation, etc., achieve high porosity, improve hydrophobicity and lipophilicity, and enhance organic degree of effect

Inactive Publication Date: 2018-06-22
张芸
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention: Aiming at the defect that the common polyurethane sponge cannot achieve good oil-water separation in the process of oily sewage treatment and is likely to cause potential hidden dangers to humans and marine organisms, a hydrophobic and lipophilic polyurethane sponge is provided. Preparation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0021]Weigh 20g of molybdenum disulfide, grind it for 10 minutes, pass it through a 100-mesh sieve, collect the sieved molybdenum disulfide powder, mix the sieved molybdenum disulfide powder with a 30% ethanol solution in a mass ratio of 1:3 and place it in ultrasonic dispersion In the instrument, under the conditions of power 300W and frequency 24kHz, ultrasonic vibration was performed for 2 hours to obtain the oscillator, and then the oscillator and stearic acid were mixed in a water bath at a mass ratio of 4:1, and the temperature was 60 ° C. Stir the reaction for 1 hour, after the reaction is finished, dry and discharge the material to obtain self-made modified molybdenum disulfide powder; measure 70 mL of absolute ethanol and 0.8 mL of nitric acid solution with a mass fraction of 16% and mix and stir for 12 minutes to obtain a mixed solution, and then add the mixed solution to the mixed solution Add 10 mL of isopropyl titanate to the reaction solution, continue to mix and ...

example 2

[0023] Weigh 25g of molybdenum disulfide, grind it for 11 minutes, pass it through a 100-mesh sieve, collect the sieved molybdenum disulfide powder, mix the sieved molybdenum disulfide powder and 30% ethanol solution with a mass fraction of 1:3, and place in ultrasonic dispersion In the instrument, under the condition of power of 400W and frequency of 26kHz, ultrasonic vibration was performed for 3h to obtain the oscillator, and then the oscillator and stearic acid were mixed in a water bath at a mass ratio of 4:1, and the temperature was 65°C. Stir the reaction for 1.5h. After the reaction, dry and discharge the material to obtain self-made modified molybdenum disulfide powder; measure 75mL of absolute ethanol and 0.9mL of nitric acid solution with a mass fraction of 16% and mix and stir for 14min to obtain a mixed solution. Add 11mL of isopropyl titanate to the solution, continue to mix and stir for 1.5h to obtain a reaction solution, continue to add 4mL of deionized water, 0...

example 3

[0025] Weigh 30g of molybdenum disulfide, grind it for 12 minutes, pass it through a 100-mesh sieve, collect the sieved molybdenum disulfide powder, mix the sieved molybdenum disulfide powder and 30% ethanol solution with a mass fraction of 1:3, and place in ultrasonic dispersion In the instrument, under the condition of power of 500W and frequency of 28kHz, ultrasonic vibration was performed for 4 hours to obtain the oscillator, and then the oscillator and stearic acid were mixed in a water bath with a mass ratio of 4:1, and the temperature was 70°C. Stir the reaction for 2 hours, after the reaction, dry and discharge the material to obtain self-made modified molybdenum disulfide powder; measure 80mL of absolute ethanol and 1.0mL of nitric acid solution with a mass fraction of 16% and mix and stir for 16min to obtain a mixed solution, and then pour the mixed solution Add 12mL of isopropyl titanate to the mixture, continue to mix and stir for 2h to obtain a reaction solution, c...

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Abstract

The invention discloses a preparation method for a hydrophobic lipophilic polyurethane sponge, belonging to the technical field of sponge preparation. According to the preparation method, polyurethaneresin is blended with amber powder and a copolymer to prepare a self-made polyurethane sponge; then under the action of a foaming agent and a curing agent, a three-dimensional porous structure is formed and has low density and high porosity; the organification of the surface of molybdenum disulfide powder is enhanced, and a part of stearic acid having not participated in a reaction is to be condensed since the melting point of stearic acid is about 70 DEG C, which is beneficial for improvement of the hydrophobicity and lipophilicity of the polyurethane sponge; and self-made titanium dioxide sol is further modified by using a silane coupling agent KH-570, and since KH-570 is a silane coupling agent with a long hydrophobic chain, a part of covalent bonds generated after a dehydration reaction of the silane coupling agent with hydroxyl groups on the surface of a titanium dioxide sol promotes successful loading of titanium dioxide particles in the modified sol onto the surface of the polyurethane sponge, so a layer of hydrophobic lipophilic protection film is formed, and the hydrophobic lipophilic polyurethane sponge has good application prospects.

Description

technical field [0001] The invention discloses a method for preparing a hydrophobic and lipophilic polyurethane sponge, which belongs to the technical field of sponge preparation. Background technique [0002] Polyurethane sponge is foam density less than 18 kg / m 3 For the following low-density PU, the method is usually that the amount of water exceeds 4.5 parts, and the amount of TDI exceeds 55 parts. The heat dissipation problem of the foam is very prominent. Because the heat inside the foam is not easy to dissipate, the temperature automatically rises above 180 °C during the foaming process, which will cause Causes foam to spontaneously ignite resulting in a fire hazard. [0003] Polyurethane sponges are divided into: polyether polyols used in polyurethane high resilience sponges are generally terminated with EO, and the polyether is highly active. The produced sponges have a mixed distribution of cell diameters, different skeleton thicknesses, and a large opening rate. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L23/08C08J9/224C08J9/10
CPCC08J9/103C08J9/224C08J2203/04C08J2375/04C08J2423/08
Inventor 张芸杨亚生陈可
Owner 张芸
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