Preparation method for modifying nano particle emulsion by activated sludge

A nanoparticle and activated sludge technology, which is applied in the field of nanoparticle emulsion preparation, can solve the problems of uneven particle size dispersion, easy agglomeration, and easy peeling off of the coating film, and achieve good modification effect, simple preparation steps, and coating film high intensity effect

Inactive Publication Date: 2016-09-07
袁春华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to aim at the low strength and poor water resistance of the coating film caused by the introduction of hydrophilic groups and emulsifiers in the current common nanoparticle emulsions, which are coated and modified with resin systems such as inorganic fillers, which are prone to agglomeration, Due to the disadvantages of uneven particle size dispersion, poor modification effect, and easy peeling of the coating film, it provides a method for hydrophobic modification of inorganic nanoparticles by mixing lard and coking wastewater under the action of activated sludge rich in nitrifying bacteria. , and modify its surface with a surfactant, and prepare a nanoparticle emulsion after coating with acrylate
The present invention modifies nano-silica by coking waste water and animal oil under the action of nitrifying bacteria in activated sludge, increasing the number of hydrophobic nitro and ester groups on its surface, and compounding with acrylate Good water resistance, not only solves the problems of low strength and poor water resistance of the common nanoparticle emulsion coating film, but also makes up for the defects that the inorganic filler is easy to agglomerate and the particle size dispersion is uneven, which leads to the defect that the coating film is easy to fall off

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] First weigh 300g of pork suet, cut it into thin slices with a thickness of 3mm and put it in an iron pot, then add 5g of sodium chloride, heat up to 90°C, keep it warm until the pork suet residue is golden yellow, and remove the pork suet residue , to obtain lard; according to the volume ratio of 1:10, the lard boiled above is mixed with the coking wastewater discharged from the coking plant to obtain a mixed solution, and 40g of nano-silica powder is weighed and packed into a 50KD dialysis bag , seal the mouth of the bag and put it into a ceramic tank with an aeration device at the bottom; then add 5L of the above-mentioned mixed solution to the ceramic tank to submerge the dialysis bag, and then weigh 200g of the activated sludge in the ammonia nitrogen wastewater treatment tank Add 5g of sodium dodecylbenzenesulfonate into the ceramic tank, start the aeration device to feed oxygen into the tank, aerate for 1 hour every 20 minutes, and put the ceramic tank in a 24°C th...

example 2

[0020]First weigh 350g of pork suet, cut it into thin slices with a thickness of 4mm and put it in an iron pot, then add 6g of sodium chloride, heat up to 95°C, keep it warm and boil until the pork suet residue is golden yellow, then remove the pork suet residue , to obtain lard; according to the volume ratio of 1:10, the above-mentioned boiled lard was mixed with the coking wastewater discharged from the coking plant to obtain a mixed solution, and 45g of nano-silica powder was weighed and packed into a 50KD dialysis bag , seal the mouth of the bag and put it into a ceramic tank with an aeration device at the bottom; then add 6L of the above-mentioned mixed solution to the ceramic tank to submerge the dialysis bag, and then weigh 250g of the activated sludge in the ammonia nitrogen wastewater treatment tank Add 8g of sodium dodecylbenzenesulfonate into the ceramic tank, start the aeration device to feed oxygen into the tank, aerate for 2 hours every 25 minutes, and put the cer...

example 3

[0023] First weigh 400g of pork suet, cut it into thin slices with a thickness of 5mm and put it in an iron pot, then add 8g of sodium chloride, heat up to 100°C, keep it warm until the pork suet residue is golden yellow, and remove the pork suet residue , to obtain lard; according to the volume ratio of 1:10, the lard boiled above is mixed with the coking waste water discharged from the coking plant to obtain a mixed solution, and 50g of nano-silica powder is weighed and packed into a 50KD dialysis bag , seal the mouth of the bag and put it into a ceramic tank with an aeration device at the bottom; then add 7L of the above-mentioned mixed solution to the ceramic tank to submerge the dialysis bag, and then weigh 300g of the activated sludge in the ammonia nitrogen wastewater treatment tank Add 10g of sodium dodecylbenzenesulfonate into the ceramic tank, start the aeration device to feed oxygen into the tank, aerate for 2 hours every 30 minutes, and put the ceramic tank in a 26°...

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PUM

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Abstract

The invention discloses a preparation method for modifying nano particle emulsion by activated sludge, and belongs to the technical field of nano particle emulsion preparation. Lard and coking wastewater are mixed to carry out hydrophobic modification on inorganic nano particles under the function of the activated sludge which is rich in nitrobacteria, surfactant is used for modifying the surfaces of the inorganic nano particles, and the inorganic nano particles are coated by acrylate to obtain the nano particle emulsion. The coking wastewater and animal fat are used for modifying nano silicon dioxide under the function of the nitrobacteria in the activated sludge, the amount of the surface hydrophobicity nitro and ester groups is increased, the nano particle emulsion has good water resistance after being compounded with the acrylate, the problems of low film strength and poor water resistance of the common nano particle emulsion are solved, and the defect that the film is likely to fall since inorganic fillers are likely to be agglomerated and particle diameter dispersion is uneven can be made up.

Description

technical field [0001] The invention relates to a method for preparing nanoparticle emulsion modified by activated sludge, and belongs to the technical field of nanoparticle emulsion preparation. Background technique [0002] Nanomaterials have become one of the research hotspots in the field of material science in recent years because of their many unique properties. It has become the research focus of all countries in the world. Although the research on inorganic nanoparticle / emulsion composite materials in my country started relatively late, it has developed rapidly in recent years. Most emulsions are linear structure polymers. Although the polymer chains can form weak Physical cross-linking, but lack of strong chemical cross-linking, and the introduction of hydrophilic groups and emulsifiers lead to inherent deficiencies such as low film strength and poor water resistance. Emulsifiers are easy to migrate and foam. The application and development of nanoparticle emulsion ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/06C08F2/44C08K13/06C08K9/04C08K9/02C08K9/00C08K3/36
CPCC08F220/14C08F2/44C08K3/36C08K9/00C08K9/02C08K9/04C08K9/08C08K13/06C08K2201/011
Inventor 袁春华盛海丰林茂平
Owner 袁春华
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