Electromagnetic shielding cement board and its semi-dry method of preparation
A technology of electromagnetic shielding and preparation technology, which is applied in the field of cement boards, can solve the problems of rising raw material costs, high prices, and high prices of cement boards, and achieve the effects of high density, low porosity, and low moisture content
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Embodiment 1
[0046] 1. An electromagnetic shielding cement board, comprising material A and solution B. In parts by weight, said material A comprises the following raw materials: 60 parts of Portland cement, 8 parts of glass fiber, 3 parts of silica fume, 12 parts of fly ash Parts, polyvinylpyrrolidone (molecular weight is 2.0×10 4 ) 1.5 parts; the solution B is made up of the following raw materials in parts by weight: 95 parts of water, 3 parts of KH550 type silane coupling agent, ferroferric oxide modified graphene oxide (GO-Fe 3 o 4 ) 0.1 part, wherein; the GO-Fe 3 o 4 The loading amount of ferric oxide in the medium is 5% (mol fraction).
[0047] 2. In the present embodiment, the preparation method of the modified graphene oxide by ferric oxide is as follows: (1) dilute the graphene oxide solution to 0.5mg / ml, then add ferric oxide to graphene oxide in proportion In the solution, the obtained mixed solution was placed in a magnetic stirrer with a water bath heating function and st...
Embodiment 2
[0054] 1. An electromagnetic shielding cement board, comprising material A and solution B. In parts by weight, said material A comprises the following raw materials: 70 parts of Portland cement, 5 parts of glass fiber, 6 parts of silica fume, 5 parts of fly ash Parts, polyvinylpyrrolidone (molecular weight is 3.4×10 4 ) 1.2 parts; the solution B is made up of the following raw materials in weight parts: 98 parts of water, 5 parts of KH550 type silane coupling agent, ferroferric oxide modified graphene oxide (GO-Fe 3 o 4 ) 0.15 parts, wherein; the GO-Fe 3 o 4 The loading amount of ferric oxide in the medium is 2% (mol fraction).
[0055] 2. In the present embodiment, the preparation method of the modified graphene oxide by ferric oxide is as follows: (1) dilute the graphene oxide solution to 0.3 mg / ml, and then add ferric oxide to graphene oxide in proportion In the solution, the obtained mixed solution was placed in a magnetic stirrer with a water bath heating function and...
Embodiment 3
[0062] 1. An electromagnetic shielding cement board, comprising material A and solution B. In parts by weight, said material A comprises the following raw materials: 50 parts of Portland cement, 10 parts of glass fiber, 7 parts of silica fume, and 10 parts of fly ash Parts, polyvinylpyrrolidone (molecular weight is 1.3×10 4 ) 0.5 part; the solution B is made up of the raw materials of following weight parts: 92 parts of water, 6 parts of KH550 type silane coupling agent, ferroferric oxide modified graphene oxide (GO-Fe 3 o 4 )0.05 part, wherein; the GO-Fe 3 o 4 The loading amount of ferric oxide in the medium is 7% (mol fraction).
[0063]2. In the present embodiment, the preparation method of the modified graphene oxide by ferric oxide is as follows: (1) dilute the graphene oxide solution to 0.4 mg / ml, and then add ferric oxide to graphene oxide in proportion In the solution, the obtained mixed solution was placed in a magnetic stirrer with a water bath heating function a...
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Abstract
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