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Carbon fiber grid, preparation method thereof, composite material and preparation of composite material

A composite material and carbon fiber technology, which is applied in the fields of carbon fiber, fiber processing, textiles and papermaking, etc., can solve the problems of inability to achieve effective chemical connection, failure to meet mechanical performance requirements, and many inorganic components, so as to meet the requirements of mechanical performance and improve Mechanical properties, the effect of increasing the grip force

Inactive Publication Date: 2019-08-20
CARBON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unable to meet the mechanical performance requirements in engineering
In addition, there are many inorganic components in the polymer mortar, which cannot achieve effective chemical connection with the modified carbon fiber fabric.

Method used

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  • Carbon fiber grid, preparation method thereof, composite material and preparation of composite material
  • Carbon fiber grid, preparation method thereof, composite material and preparation of composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Please refer to figure 1 , a flowchart of a method for preparing a carbon fiber grid provided in this embodiment, comprising the following steps:

[0040] S11 surface oxidation treatment, put a suitable cut carbon fiber grid into a beaker, add concentrated nitric acid with a mass fraction of 69% into the beaker, and then heat it in a water bath at 100 ° C for 12 hours, the carbon fiber grid is oxidized by nitric acid to remove the surface of the carbon fiber grid Primer, increase the roughness of the carbon fiber surface, introduce polar groups such as carboxyl groups on the carbon fiber surface, increase the surface chemical activity of the carbon fiber grid;

[0041] S12 cleaning and drying treatment, after the carbon fiber grid surface is oxidized, rinse it off with distilled water for 4-5 times, then put it in an oven, and dry it at 40 °C for 3 hours;

[0042] S13 Preparation of dendrimer (PAMAM) solution, 0.05g of dendrimer (PAMAM) and 0.005g of methyl ammonia hex...

Embodiment 2

[0048] Please refer to figure 2 , a schematic flowchart of a composite material preparation method provided in this embodiment, comprising the following steps:

[0049] S21 Prepare a cellulose-based substance solution, dissolve 294 mg of cellulose in 98 g of distilled water, stir magnetically at 40°C for 2 h, and let stand for 10 min to obtain a cellulose-based substance solution;

[0050] S22 polymer mortar modification treatment, mixing the above-mentioned cellulose substance solution with 600g polymer mortar uniformly to obtain a modified polymer mortar;

[0051] S23 Prepare the composite material, coat the modified polymer mortar on the surface of the reinforcement object coated with the interface agent, form an inner mortar layer with a thickness of 4-6mm, and then flatten the nano-sized carbon fiber grid obtained in Example 1. On the inner mortar layer, a carbon fiber grid layer is formed, and then the modified polymer mortar is coated on the carbon fiber grid layer to...

Embodiment 3

[0056] Please refer to figure 1 , a flowchart of a method for preparing a carbon fiber grid provided in this embodiment, comprising the following steps:

[0057] S11 surface oxidation treatment, put a suitable cut carbon fiber grid into a beaker, add concentrated nitric acid with a mass fraction of 69% into the beaker, and then heat it in a water bath at 100 ° C for 12 hours, the carbon fiber grid is oxidized by nitric acid to remove the surface of the carbon fiber grid Primer, increase the roughness of the carbon fiber surface, introduce polar groups such as carboxyl groups on the carbon fiber surface, increase the surface chemical activity of the carbon fiber grid;

[0058] S12 cleaning and drying treatment, after the carbon fiber grid surface is oxidized, rinse it off with distilled water for 4-5 times, then put it in an oven, and dry it at 40 °C for 3 hours;

[0059] S13 Prepare dendrimer (PAMAM) solution, dissolve 0.1g dendrimer (PAMAM) and 0.005g methylaminohexaoxophosp...

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PUM

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Abstract

The invention discloses a carbon fiber grid, a preparation method thereof, a composite material and a preparation of the composite material. The preparation method of the carbon fiber grid comprises following steps: surface oxidation treatment, cleaning and drying treatment, preparation of a dendritic macromolecular solution, introduction of a dendritic macromolecular coating, introduction of carbon nano tubes, cleaning and drying treatment and obtaining of the nano-crystallized carbon fiber grid. The bond stress of an interface of polymer mortar and the carbon fiber grid is effectively increased, so that the mechanical property requirement in a building reinforcement project is met.

Description

technical field [0001] The present disclosure generally relates to the technical field of building reinforcement materials, and in particular, relates to a carbon fiber grid and a preparation method thereof, a composite material and a preparation method thereof. Background technique [0002] Reinforcement materials are one of the hotspots in the current research of the construction industry. The commonly used building reinforcement materials include: steel sheet, carbon fiber fabric and reinforced concrete. Compared with the above reinforcement materials, carbon fiber mesh has the following advantages: high specific strength and specific modulus; light weight, which can effectively reduce its own weight compared with traditional reinforcement materials such as steel bars or steel sheets; good physical and chemical stability It can maintain good mechanical properties in acidic or alkaline environments, thus greatly expanding its application range; it has good heat resistance...

Claims

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Application Information

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IPC IPC(8): D06M15/61D06M11/74D06M11/65C04B20/12C04B14/38C04B28/00D06M101/40
CPCD06M15/61D06M11/74D06M11/65C04B20/12C04B14/386C04B28/00D06M2101/40C04B20/1037C04B20/1055C04B24/383
Inventor 武博许小海罗仕刚赵明月
Owner CARBON TECH CO LTD
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