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Preparation method of SiC microwire modified gypsum

A technology of micron wire and gypsum, which is applied in the field of materials and engineering, can solve the problems of complicated preparation process and small increase in the strength of gypsum, and achieve the effect of improving the flexural strength

Active Publication Date: 2016-02-10
陕西建科建设特种工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But above-mentioned method all has the following steps: 1., preparation process is complicated; 2, gypsum strength improves little

Method used

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  • Preparation method of SiC microwire modified gypsum

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Comparison scheme
Effect test

specific Embodiment 1

[0022] A preparation method of SiC micron wire modified gypsum, comprising the following steps:

[0023] (1) SiC micron wires were soaked in 10% hydrogen peroxide for 96 hours and then dried for later use;

[0024] (2) Add 0.5 parts of SiC microwires obtained in step (1) to 1000 parts of water, and obtain SiC microwire mixture A after ultrasonic dispersion for 10 minutes;

[0025] (3) Add 0.5 parts of SiC microwires obtained in step (1) to 800 parts of ethanol, and obtain SiC microwire mixture B after ultrasonic dispersion for 10 minutes;

[0026] (4) Add 100 parts of gypsum powder to the SiC microwire mixture A obtained in step (2), and stir with a stirrer for 30 minutes to obtain a mixture C;

[0027] (5) Pour half of the mixture C obtained in step (4) into a molding mold, and dry at 20°C for 96 hours to obtain sample D;

[0028] (6), first soak the carbon fiber cloth in the phenolic resin for 12 minutes, then spread the carbon fiber cloth on the upper surface of the sampl...

specific Embodiment 2

[0034] A preparation method of SiC micron wire modified gypsum, comprising the following steps:

[0035] (1) SiC micron wires were soaked in 30% hydrogen peroxide for 24 hours and then dried for later use;

[0036] (2) Add 2 parts of SiC microwires obtained in step (1) to 1000 parts of water, and obtain SiC microwire mixture A after ultrasonic dispersion for 60 minutes;

[0037] (3) Add 2 parts of SiC microwires obtained in step (1) to 800 parts of ethanol, and obtain SiC microwire mixture B after ultrasonic dispersion for 60 minutes;

[0038] (4) Add 900 parts of gypsum powder to the SiC microwire mixture A obtained in step (2), and stir with a stirrer for 60 minutes to obtain a mixture C;

[0039] (5) Pour one-half of the mixture C obtained in step (4) into a molding mold, and dry at 60° C. for 24 hours to obtain sample D;

[0040] (6), after soaking carbon fiber cloth in phenolic resin for 60 minutes, spread the carbon fiber cloth on the upper surface of sample D obtained...

specific Embodiment 3

[0046] A preparation method of SiC micron wire modified gypsum, comprising the following steps:

[0047] (1) SiC micron wires were soaked in 20% hydrogen peroxide for 48 hours and then dried for later use;

[0048] (2) Add 1 part of SiC microwire obtained in step (1) to 1000 parts of water, and obtain SiC microwire mixture A after ultrasonic dispersion for 30 minutes;

[0049] (3) Add 1 part of SiC microwire obtained in step (1) to 800 parts of ethanol, and obtain SiC microwire mixture B after ultrasonic dispersion for 30 minutes;

[0050] (4) Add 500 parts of gypsum powder to the SiC microwire mixture A obtained in step (2), and stir with a stirrer for 45 minutes to obtain a mixture C;

[0051] (5) Pour half of the mixture C obtained in step (4) into a molding mold, and dry at 40° C. for 48 hours to obtain sample D;

[0052] (6), after soaking carbon fiber cloth in phenolic resin for 40 minutes, spread the carbon fiber cloth on the upper surface of sample D obtained in step...

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Abstract

The invention relates to a preparation method of SiC microwire modified gypsum. The method includes the following steps of firstly, adding SiC microwires to hydrogen peroxide to be soaked and dried in the air for standby application; secondly, preparing a SiC microwire mixture A; thirdly, preparing a SiC microwire mixture B; fourthly, adding gypsum powder to the SiC microwire mixture A to obtain a mixture C; fifthly, pouring half of the mixture C into a forming die, and conducting drying to obtain a sample D; sixthly, soaking carbon fiber cloth in phenolic resin, and flat laying the carbon fiber cloth on the upper surface of the sample D to obtain a sample E; seventhly, coating the upper surface of the sample E with at least one layer of SiC microwire mixture B, and drying the mixture B to obtain a sample F; eighthly, pouring the rest of the mixture C on the upper surface of the sample F, and conducting drying and demolding to obtain SiC microwire modified gypsum. The breaking strength of the modified gypsum obtained through the preparation method is improved by 200-350%.

Description

technical field [0001] The invention belongs to the technical field of materials and engineering, and relates to a preparation method of gypsum, in particular to a preparation method of SiC micron-wire modified gypsum. Background technique [0002] Gypsum is a traditional multifunctional air-hardening gelling material, which has good shape-forming ability and processing performance, and has the characteristics of light weight, fire resistance, stable size and harmless to human body, so it has a wide range of applications in the field of green building materials. However, the low strength of gypsum materials limits its wider application. [0003] The document "Ismail Demir, Serhat Baspinar. Effect of silica fume and expanded perlite addition on the technical properties of the flyash-lime-gypsum mixture, Construction and Building Materials, 2008, 22: 1299-1304" found that silica fume and perlite were used to strengthen gypsum materials, and the strength of the modified gypsum ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B11/00
Inventor 李丹贾忠奎曹慧韩雨林峰李嘉俊
Owner 陕西建科建设特种工程有限公司
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