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Method for enhancing biofilm culturing performance of graphene oxide modified biological filler

A technology of biological fillers and oxide stones, applied in the direction of coating, etc., can solve the problems of reducing the service life of fillers, difficult to effectively combine the interface, complicated operation, etc., to enhance the bonding strength of the interface, increase the slow speed of film formation, and increase the surface energy. Effect

Pending Publication Date: 2020-09-11
北京北控工业环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the lack of good compatibility between the polar graphene oxide material and the non-polar polymer biofiller matrix, it is often difficult to effectively combine the two interfaces.
At present, the most widely used filler surface modification technology is the chemical oxidation method. Although it can roughen the filler surface, increase the oxygen-containing functional groups, and enhance the hydrophilicity, the damage to the internal structure of the filler cannot be ignored by this method. The service life, and the operation is complicated, not environmentally friendly, and the problem of bonding force has not been fundamentally solved

Method used

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  • Method for enhancing biofilm culturing performance of graphene oxide modified biological filler
  • Method for enhancing biofilm culturing performance of graphene oxide modified biological filler
  • Method for enhancing biofilm culturing performance of graphene oxide modified biological filler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment relates to a method for enhancing the film-hanging performance of graphene oxide modified biofillers, said method comprising the steps of:

[0029] Step 1, dissolving the silane coupling agent (3-aminopropyl-triethoxy silicon) in 95 wt% aqueous ethanol to prepare an aqueous ethanol solution of the silane coupling agent with a mass concentration of 8 g / L;

[0030] Step 2, at room temperature, immerse the pre-cleaned polyethylene filler substrate in the prepared ethanol solution of silane coupling agent for 2 hours, then take it out and dry it at 110°C for 2 hours, take it out and dry it for storage spare;

[0031] Step 3, weighing a certain amount of graphene oxide powder, dispersing it in deionized water under stirring, and ultrasonicating for 4 hours to obtain a 0.5g / L uniform dispersion;

[0032] Step 4, place the treated filler substrate in the above graphene oxide dispersion, immerse for 4 hours under pressure, and dry at 80°C for 2 hours, graphene ...

Embodiment 2

[0035] This embodiment relates to a method for enhancing the film-hanging performance of graphene oxide modified biofillers, said method comprising the steps of:

[0036] Step 1, dissolving the silane coupling agent (3-aminopropyl-triethoxy silicon) in 95 wt% ethanol aqueous solution to prepare an ethanol aqueous solution with a mass concentration of 2 g / L of the silane coupling agent;

[0037] Step 2, at room temperature, immerse the pre-cleaned polyethylene filler substrate in the prepared ethanol solution of silane coupling agent for 2 hours, then take it out and dry it at 110°C for 2 hours, take it out and dry it for storage spare;

[0038] Step 3, weighing a certain amount of graphene oxide powder, dispersing it in deionized water under stirring, and ultrasonicating for 4 hours to obtain a 0.5g / L uniform dispersion;

[0039] Step 4, place the treated filler substrate in the above-mentioned graphene oxide dispersion liquid, impregnate for 4 hours under pressure driving, a...

Embodiment 3

[0042] This embodiment relates to a method for enhancing the film-hanging performance of graphene oxide modified biofillers, said method comprising the steps of:

[0043] Step 1, dissolving the silane coupling agent (3-aminopropyl-triethoxy silicon) in 95 wt% aqueous ethanol to prepare an aqueous ethanol solution of the silane coupling agent with a mass concentration of 8 g / L;

[0044] Step 2, at room temperature, immerse the pre-cleaned polyethylene filler substrate in the prepared ethanol solution of silane coupling agent for 2 hours, then take it out and dry it at 80°C for 2 hours, then take it out and dry it for storage spare;

[0045] Step 3, weighing a certain amount of graphene oxide powder, dispersing it in deionized water under stirring, and ultrasonicating for 4 hours to obtain a 0.5g / L uniform dispersion;

[0046] Step 4, place the treated filler substrate in the above graphene oxide dispersion, immerse for 8 hours under pressure, and dry at 80°C for 2 hours, graph...

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Abstract

The invention provides a method for enhancing the biofilm culturing performance of a graphene oxide modified biological filler. The method comprises the following steps of: dissolving a silane coupling agent in an ethanol-water / methanol-water solution to prepare an ethanol aqueous solution of the silane coupling agent; soaking a filler substrate in the ethanol aqueous solution of the silane coupling agent at room temperature, and performing drying; weighing a certain amount of graphene oxide powder, dispersing the graphene oxide powder in deionized water, and carrying out ultrasonic treatmentto obtain a uniform dispersion liquid; and placing the filler substrate in the graphene oxide dispersion liquid, performing dipping and drying, and depositing graphene oxide on the surface of the filler substrate to form a compact layer. The coupling, modification and tackifying effects of two groups in the silane coupling agent are used as a "molecular bridge" to improve the compatibility of graphene oxide and the biological filler, enhance the interface bonding strength and increase the surface energy of the filler substrate, thus acquiring the modified filler with hydraulic impact resistance, high hydrophilicity and high biophilicity, and the biofilm culturing speed, biofilm culturing quantity and other properties are improved.

Description

technical field [0001] The invention belongs to the field of biological fillers; in particular, it relates to a method for enhancing the film-hanging performance of graphene oxide modified biological fillers. Background technique [0002] Biofiller is the core of biofilm method. At present, polymer materials such as polypropylene, polyethylene, polyvinyl chloride and polyester have the advantages of light weight, easy processing, and large specific surface area, but they also have low polarity, strong hydrophobicity, The surface roughness is low, so there are deficiencies such as slow speed of film formation, amount of film formation and weak microbial attachment. In order to further improve the performance, it is necessary to modify the surface of the filler, introduce polar groups, increase the surface energy of the filler, and at the same time increase the roughness of the film surface, increase the bonding performance of the surface, and eliminate the weak boundary layer...

Claims

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Application Information

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IPC IPC(8): C08J7/06C08L23/06C08L23/12C08L75/04
CPCC08J7/06C08J2323/06C08J2323/12C08J2375/04
Inventor 张悦杨昆许建民
Owner 北京北控工业环保科技有限公司
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