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Super-waterproof straw silicon dioxide graphene composite material and preparation method thereof

A composite material and silicon dioxide technology, applied in chemical instruments and methods, alkali metal compounds, alkali metal oxides/hydroxides, etc., to achieve the effect of solving poor water resistance, preventing water molecule adhesion, and expanding the scope of application

Inactive Publication Date: 2021-02-05
JILIN JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Super-waterproof straw silicon dioxide graphene composite material and preparation method thereof
  • Super-waterproof straw silicon dioxide graphene composite material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0023] 1) Using corn stalk fiber and straw pith as the main raw materials, drying them at 100°C and preliminarily crushing them into straw granular materials with a particle size of less than 100 μm, figure 1 On the left is a photo of straw granular material.

[0024] 2) Mix 30g of straw material with 1.5g of hydrophobic nano-silicon dioxide and ball mill for 5 minutes, then add 0.5g of graphene into the mixed ball and mill for 10 minutes, the photo of the obtained composite material is as follows figure 1 shown on the right.

[0025] The product obtained in step 1) and step 2) is dropped into water respectively, as figure 2 As shown, the straw granular material without adding hydrophobic nano-silica and graphene for ball milling can be dispersed in water, while the composite material after adding hydrophobic nano-silica and graphene for ball milling is completely floating on the water surface. It shows that the composite material obtained after ball milling according to th...

Embodiment 2

[0028] 1) Using wheat straw fiber and straw pith as the main raw materials, drying them at 120°C and preliminarily crushing them into straw granular materials with a particle size of less than 100 μm;

[0029] 2) Mix 30g of straw material with 2.0g of hydrophobic nano-silica and ball mill for 5 minutes, then add 1.0g of graphene into the mixed ball mill for 10 minutes;

[0030] 3) The composite material was molded for 10 minutes at a pressure of 20 MPa and a temperature of 140 degrees Celsius to obtain a straw, hydrophobic nano-silica, and graphene composite material sample with a diameter of 6 mm and a thickness of 2 mm.

Embodiment 3

[0032] 1) Using rice straw fibers and straw pith as the main raw materials, drying them at 100°C and preliminarily crushing them into straw granular materials with a particle size of less than 100 μm;

[0033] 2) Mix 30g of straw material with 2.5g of hydrophobic nano-silicon dioxide and ball mill for 5 minutes, then add 1.5g of graphene into the mixed ball mill for 10 minutes;

[0034] 3) The composite material was molded for 10 minutes at a pressure of 20 MPa and a temperature of 150 degrees Celsius to obtain a straw, hydrophobic nano-silica, and graphene composite material sample with a diameter of 6 mm and a thickness of 2 mm.

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Abstract

The invention discloses a super-waterproof straw silicon dioxide graphene composite material and a preparation method thereof, and belongs to the technical field of waterproof building materials. Thecomposite material is prepared by mixing and ball-milling a granular straw material, hydrophobic nano silicon dioxide and graphene according to a mass ratio of 60:(3-6):(1-3). The preparation method comprises the following steps: drying and crushing the straw fibers and straw pith, conducting mixing and ball-milling with hydrophobic nano silicon dioxide and graphene, and the like. The process is simple and efficient, industrial application is easy, straw fiber and straw pith integrated treatment is achieved, the super-waterproof performance of the straw material is achieved, the additional value of the material is increased, and the application range of the straw material is expanded.

Description

technical field [0001] The invention belongs to the technical field of waterproof building materials, in particular to a super waterproof graphene straw material and a preparation method thereof. Background technique [0002] my country is a large agricultural country with abundant straw resources, wide distribution, many types and huge output. According to statistics, my country's annual output of crop straw is 700 million tons, ranking first in the world, accounting for about 30% of the world's total straw. According to the survey, the utilization rate of straw in our country is about 33% at present, and most of them are not treated, and only about 2.6% are utilized after technical treatment. The application of straw in the field of building materials is mainly in blocks and plates. However, in the application process, there are problems such as water absorption and mildew of the product, poor corrosion resistance, and low added value. Therefore, it is of practical sign...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/30B01J20/22B01J20/28
CPCB01J20/22B01J20/103B01J20/20B01J20/28007B01J20/28011
Inventor 胡洪亮肖力光高皓月黎子琦熊泽民韩利通李晶辉赵洪凯张士停
Owner JILIN JIANZHU UNIVERSITY
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