A kind of preparation method of polyurethane cellulose composite oil-water separation thermal insulation aerogel

A technology of oil-water separation and polyurethane, which is applied in the direction of separation methods, liquid separation, chemical instruments and methods, etc., can solve the problems of low mechanical properties and poor oil-water separation effect, and achieve the goals of reducing pollution, broadening the application range, and improving grafting efficiency Effect

Active Publication Date: 2021-03-26
NANJING FORESTRY UNIV
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the current situation of low mechanical properties and poor oil-water separation effect of existing airgel materials, and provide a preparation method of polyurethane cellulose composite oil-water separation thermal insulation airgel

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of polyurethane cellulose composite oil-water separation thermal insulation aerogel
  • A kind of preparation method of polyurethane cellulose composite oil-water separation thermal insulation aerogel
  • A kind of preparation method of polyurethane cellulose composite oil-water separation thermal insulation aerogel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Homogeneous functionalization reaction of microcrystalline cellulose

[0036] Measure 16ml of absolute ethanol and 4ml of deionized water into the ball mill tank, and use ultrasonic dispersion for 10 minutes to obtain a clear and transparent composite solution A. Add 1 g of silane coupling agent to composite solution A, add dropwise acetic acid to adjust the pH to 5, then weigh 1 g of microcrystalline cellulose and add it to the ball mill jar. Finally, the ball mill tank was loaded into a ball mill and continued to react at 300 rpm for 6 hours to obtain a composite solution B. Use a Buchner funnel to filter and wash the composite solution B to obtain a filter residue, and wash it several times to remove the incompletely reacted silane coupling agent. Finally, the filter residue was freeze-dried for 48 hours using a freeze dryer to obtain functionalized microcrystalline cellulose.

[0037] (2) Preparation of Polyurethane Cellulose Composite Oil-Water Separation The...

Embodiment 2

[0040] (1) Homogeneous functionalization reaction of microcrystalline cellulose

[0041] Carry out the functionalization reaction of microcrystalline cellulose according to example 1

[0042] (2) Preparation of Polyurethane Cellulose Composite Oil-Water Separation Thermal Insulation Aerogel

[0043] Take 3g (35wt%) water-based polyurethane and add it to 60ml deionized water, stir magnetically at room temperature for 6h to obtain a uniform dispersion, add 0.06g functionalized microcrystalline cellulose and continue stirring for 12h to obtain composite solution C, and then add composite solution C Freeze in liquid nitrogen for 6 hours to obtain composite material A, and then put composite material A into a vacuum freeze dryer to volatilize ice crystals, and finally obtain polyurethane cellulose composite oil-water separation thermal insulation airgel.

Embodiment 3

[0045] (1) Homogeneous functionalization reaction of microcrystalline cellulose

[0046] Carry out the functionalization reaction of microcrystalline cellulose according to example 1

[0047] (2) Preparation of high-strength and high-toughness polyurethane cellulose composite oil-water separation thermal insulation airgel

[0048] Take 3g (35wt%) water-based polyurethane and add it to 60ml deionized water, stir magnetically at room temperature for 6h to obtain a uniform dispersion, add 0.06g functionalized microcrystalline cellulose and continue stirring for 12h to obtain composite solution C, and then add composite solution C Freeze with liquid nitrogen for 8 hours to obtain composite material A, and then put composite material A into a vacuum freeze dryer to volatilize ice crystals, and finally obtain polyurethane cellulose composite oil-water separation thermal insulation airgel.

[0049] The compression properties of the polyurethane cellulose composite oil-water separati...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
concentrationaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a polyurethane cellulose composite oil water separation thermal insulating aerogel. The method comprises the steps that absolute ethyl alcohol and deionized water are mixed, and then ultrasonic dispersion is adopted to obtain a clear and transparent composite solution A; a silane coupling agent and microcrystalline cellulose are added into the composite solution A to adjust the pH value, and a high-speed ball milling reaction is carried out to obtain a composite solution B; the composite solution B is filtered to obtain filter residues; the filter residues are freeze-dried to obtain functionalized microcrystalline cellulose; the functionalized microcrystalline cellulose is added into an aqueous polyurethane dispersion solution to obtain a composite solution C; the composite solution C is freeze-dried to obtain a composite material A; the composite material A is subjected to volatilization of ice crystals to obtain the polyurethane cellulose composite oil water separation thermal insulating aerogel; the problems of low mechanical properties and poor oil-water separation effect of an aerogel material in the prior art are solved.

Description

technical field [0001] The invention relates to a preparation method of a functional polymer airgel material, in particular to a preparation method of a polyurethane cellulose composite oil-water separation thermal insulation airgel. Background technique [0002] With the intensification of people's exploitation of the earth's resources, ocean pollution has become increasingly serious. Among the many pollutions, oil pollution is particularly prominent. Oil pollution on the water not only kills a large number of fish, shrimp and other aquatic organisms, but also the condensed oil on the surface of the water body may cause burning and cause safety problems; the more serious potential harm is that oil not only pollutes the surface water body, but also affects aquatic animals and plants. Moreover, oil will be deposited to the bottom of the water through the adsorption of solid particles, and gradually accumulate in benthic organisms, thereby endangering human health through the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityPatents(China)
IPC IPC(8): C08L75/04C08L1/04C08J9/28C08B15/05B01D17/022
CPCB01D17/0202C08B15/05C08J9/0061C08J9/28C08J2201/0484C08J2205/026C08J2375/04C08J2401/04
Inventor付宇蔡晨阳
OwnerNANJING FORESTRY UNIV