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A corrosion-resistant carbon fiber artificial water grass brick and its preparation method

Active Publication Date: 2021-11-23
HUBEI POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problems in the prior art, the present invention provides a corrosion-resistant carbon fiber artificial water grass brick and its preparation method. The preparation method is simple, and the artificial water grass brick prepared by this method has high corrosion resistance and high strength. Among the artificial water grass bricks The grass fiber is not easy to fall off during use, which can overcome the problem that traditional artificial aquatic plants are easy to fall off

Method used

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  • A corrosion-resistant carbon fiber artificial water grass brick and its preparation method
  • A corrosion-resistant carbon fiber artificial water grass brick and its preparation method
  • A corrosion-resistant carbon fiber artificial water grass brick and its preparation method

Examples

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Embodiment 1

[0029] A method for preparing corrosion-resistant carbon fiber artificial water grass bricks, mainly comprising the following steps:

[0030] (1) Cut out 30 sections of polyacrylonitrile-based carbon fiber (carbon fiber strength is 1000MPa, modulus is 100GPa), each section is 12cm long; soak the carbon fiber in 1mol / L sodium hydroxide solution for 24h, and then place it in a container Modified carbon fibers are obtained by electrochemical modification in an electrolytic cell with an electrolyte, wherein the electrolyte is NH 4 HCO 3 and (NH 4 ) 2 C 2 o 4 ·H 2 O is prepared by mixing with a molar ratio of 1:1, the electrolysis time is 30min, and the current intensity is 600mA;

[0031] (2) Weigh furan resin and sulfamic acid with a mass ratio of 1:3, put them into a cylindrical brick mold with a diameter of 6 cm and a height of 2 cm, mix them evenly, and cure them at 20° C. for 2 days to obtain a solidified base; Among them, when the curing time is 12 hours and the fixed...

Embodiment 2

[0038] A method for preparing corrosion-resistant carbon fiber artificial water grass bricks, mainly comprising the following steps:

[0039] (1) Cut out 30 sections of polyacrylonitrile-based carbon fiber (carbon fiber strength is 1800MPa, modulus is 200GPa), each section is 12cm long; soak the carbon fiber in 5mol / L sodium hydroxide solution for 48h, and then place it in a container Modified carbon fibers are obtained by electrochemical modification in an electrolytic cell with an electrolyte, wherein the electrolyte is NH 4 HCO 3 and (NH 4 ) 2 C 2 o 4 ·H 2 O is prepared by mixing the molar ratio of 1:4, the electrolysis time is 120min, and the current intensity is 1800mA;

[0040](2) Weigh furan resin and ethyl sulfate with a mass ratio of 1:10, put them into a cylindrical brick mold with a diameter of 6 cm and a height of 2 cm, mix them evenly, and cure them at 40° C. for 1 day to obtain a solidified base; , when the curing time is 2 hours and the fixed base becomes...

Embodiment 3

[0044] A method for preparing corrosion-resistant carbon fiber artificial water grass bricks, mainly comprising the following steps:

[0045] (1) Cut 30 sections of polyacrylonitrile-based carbon fiber (the strength of carbon fiber is 1500MPa, the modulus is 150GPa), each section is 7cm long; soak the carbon fiber in 3mol / L sodium hydroxide solution for 12h, and then place it in a container Electrochemical modification is carried out in the electrolytic cell with electrolyte to obtain modified carbon fiber, wherein, NH 4 HCO 3 and (NH 4 ) 2 C 2 o 4 ·H 2 O is prepared by mixing the molar ratio of 1:2, the electrolysis time is 10min, and the current intensity is 300mA;

[0046] (2) Weigh furan resin and p-toluenesulfonic acid with a mass ratio of 1:6, put them into a rectangular brick-making mold with a length of 5 cm, a width of 2.5 cm, and a height of 1.2 cm, mix evenly, and maintain at 30 ° C for 1 Obtain the solidified fixed base every day, wherein; When the curing ti...

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Abstract

The invention discloses a corrosion-resistant carbon fiber artificial water grass brick and a preparation method thereof, belonging to the technical field of sewage treatment. In the present invention, the carbon fiber is first oxidized and modified by an electrochemical method to obtain a modified carbon fiber with good dispersibility and hydrophilicity, and then the modified carbon fiber is firmly fixed on the fixed base by the curing reaction of the corrosion-resistant resin and the curing agent, and finally Corrosion-resistant carbon fiber artificial water grass bricks were prepared. The preparation method is simple, and the prepared artificial aquatic plant bricks are not easy to fall off during use, and have good corrosion resistance and adsorption performance, and can overcome the problems of poor corrosion resistance and easy falling off of traditional artificial aquatic plants during use.

Description

technical field [0001] The invention relates to an artificial aquatic plant brick and a preparation method thereof, in particular to a corrosion-resistant carbon fiber artificial aquatic plant brick and a preparation method thereof, and belongs to the technical field of sewage treatment. Background technique [0002] With the economic development and population increase, our country's urban rivers and lakes are suffering from increasingly serious pollution and damage. Water pollution leads to algal blooms, consumes dissolved oxygen in water, destroys the living environment of aquatic plants, makes it difficult for aquatic plants to grow, reduces the self-purification ability of rivers, and the degree of eutrophication of water bodies is becoming more and more serious. [0003] In order to improve the self-purification ability of rivers, artificial aquatic plants are often used to carry out bio-augmented restoration of water bodies. Artificial aquatic plants mainly play two r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/28C02F3/00C08L61/00C08K9/02C08K7/06C02F101/38
CPCC02F1/285C02F3/00C02F2101/308C02F2101/38C08K7/06C08K9/02C08L61/00
Inventor 陶敏李胜方廖泽远刘浩肖文胜刘先利
Owner HUBEI POLYTECHNIC UNIV
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