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A kind of super amphiphilic polyurethane foam material and preparation method thereof

A technology of polyurethane foam and polyurethane sponge, which is applied in the direction of coating, etc., can solve the problems of complex operation process of hydrothermal method and difficult control of sample size, and achieve the effect of reusability, overcapacity problem and good elasticity

Active Publication Date: 2020-08-14
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the operation process of the hydrothermal method is complicated, and the sample size is not easy to control

Method used

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  • A kind of super amphiphilic polyurethane foam material and preparation method thereof
  • A kind of super amphiphilic polyurethane foam material and preparation method thereof
  • A kind of super amphiphilic polyurethane foam material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The process of preparing the super-amphiphilic polyurethane foam material in this example is to pre-coat nano-cellulose and then dip-coat graphene, wherein the nano-cellulose is prepared by chemically hydrolyzing corn stalks. The specific process is as follows:

[0034] Put the nanocellulose into a beaker, add tap water to make it up to volume, and ultrasonically treat it for 60 minutes under the condition of a power of 500W to obtain a uniform nanocellulose aqueous dispersion, wherein the nanocellulose content is 0.5wt%.

[0035] Soak the cleaned and dried polyurethane sponge in the nanocellulose aqueous dispersion for 30 minutes, take it out and fully dry it in an oven at 40°C to obtain a polyurethane sponge coated with nanocellulose. Then soak the polyurethane sponge coated with nanocellulose in the graphene dispersion (1 g graphene / 800 mL water) for 40 min, and then dry it at 20 ° C to obtain a super-amphiphilic polyurethane foam.

Embodiment 2

[0037] The process of preparing the super-amphiphilic polyurethane foam material in this example is to pre-coat nano-cellulose and then dip-coat graphene, wherein the nano-cellulose is prepared by chemically hydrolyzing wood powder. The specific process is as follows:

[0038] Put the nanocellulose into a beaker, add deionized water to make it up to volume, and ultrasonically treat it for 30 minutes under the condition of a power of 600W to obtain a uniform nanocellulose aqueous dispersion, wherein the nanocellulose content is 0.6wt%.

[0039] Soak the cleaned and dried polyurethane sponge in the nanocellulose aqueous dispersion for 40 minutes, take it out and fully dry it in an oven at 50°C to obtain a polyurethane sponge coated with nanocellulose. Then soak the polyurethane sponge coated with nanocellulose in the graphene dispersion (1g graphene / 300mL water) for 60min, and then dry it at 40°C to obtain a super-amphiphilic polyurethane foam.

Embodiment 3

[0041] The process of preparing the super-amphiphilic polyurethane foam material in this example is to pre-coat nano-cellulose and then dip-coat graphene, wherein the nano-cellulose is prepared by chemically hydrolyzing wood powder. The specific process is as follows:

[0042] Put the nanocellulose into a beaker, add deionized water to make it up to volume, and ultrasonically treat it for 30 minutes under the condition of a power of 600W to obtain a uniform nanocellulose aqueous dispersion, wherein the nanocellulose content is 0.7wt%.

[0043] Soak the cleaned and dried polyurethane sponge in the nanocellulose aqueous dispersion for 50 minutes, take it out and fully dry it in an oven at 60°C to obtain a polyurethane sponge coated with nanocellulose. Then soak the polyurethane sponge coated with nanocellulose in the graphene dispersion (1 g graphene / 600 mL water) for 50 min, and then dry it at 60 ° C to obtain a super-amphiphilic polyurethane foam.

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Abstract

The invention discloses a super-amphiphilic polyurethane foamed material and a preparation method thereof, and belongs to the technical field of functional composite materials. Polyurethane sponge surface is coated with nano-cellulose and graphene powder dispersions respectively in order by a dip coating method to obtain a nano-cellulose and graphene synergistic super-amphiphilic surface capable of rapidly adsorbing water and oil. The contact angles of the super-amphiphilic polyurethane foamed material prepared by the method with water and oil both are zero. The nano-cellulose and graphene synergistic super-amphiphilic surface provides a basis for development of new materials with special wetting properties and application of the new materials.

Description

technical field [0001] The invention relates to the technical field of functional composite materials, in particular to a method for preparing a super-amphiphilic polyurethane foam material through the synergistic effect of nanocellulose and graphene. Background technique [0002] Graphene has become the most promising carbon nanomaterial due to its excellent mechanical, electrical, magnetic, thermal and optical properties. Graphene exhibits hydrophobic properties due to its structural characteristics, and super-hydrophobic properties can be easily obtained through morphology control. The thickness of graphene is only one or several carbon atomic layers, and its specific surface area is as high as 2630m 2 / g, and has good chemical stability, so its application in the adsorption of oils and organic reagents has gradually attracted people's attention. Graphene foam has higher adsorption capacity due to its low density and large surface, so the three-dimensional graphene netw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/36C08J9/40C08L75/04
CPCC08J9/365C08J9/40C08J2375/04
Inventor 隋国鑫刘冬艳张笑谈马娜林国明孙兆松
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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