Preparation method of functionalized plant fiber plaster material
A plant fiber and gypsum material technology, applied in the field of building materials, can solve the problems of difficult to control setting time and interface performance, difficult to realize other functions, poor interface performance, etc. Effects of porosity and specific surface area
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Examples
Embodiment 1
[0026] The rice straw was thermally analyzed in the STA449C comprehensive analyzer produced by the German Netzsch company at a temperature increase of 5 °C / min, and the ignition point temperature was measured to be 313 °C;
[0027] First place the straw in the N 2 In the atmosphere, the room temperature was raised to 310°C, kept for 30 minutes, and cooled to room temperature, and then 20% of the obtained modified plant fiber was mixed with 70% of β hemihydrate gypsum, 9.99% of lime, and 0.01% of carboxypropyl methyl cellulose ether according to the mass ratio. Mix evenly to get the final product,
[0028] Among them, the β hemihydrate gypsum has a fineness of 0.2mm square hole sieve less than or equal to 15.0wt%, lime has a calcium oxide content greater than or equal to 85wt%, and its fineness of 0.90mm square hole sieve is less than or equal to 1.5wt%. 0.125mm square hole sieve residue is less than or equal to 18.0wt%,
[0029] When in use, add water accounting for 71% of t...
Embodiment 2
[0032] The cornstalk was thermally analyzed in the STA449C comprehensive analyzer produced by the German Netzsch company at a temperature increase of 2°C / min, and its ignition point was measured to be 344°C;
[0033] First put the cornstalks in the O 2 In an atmosphere with a content of <1%, the room temperature is raised to 330°C, the temperature is kept for 120 minutes, and the temperature is lowered to room temperature. Then, according to the mass ratio, 30% of the modified plant fiber obtained is mixed with 60% of β-hemihydrate gypsum, 5% of lime, 4.98% of slag cement, Carboxypropyl methyl cellulose ether 0.02% is evenly mixed to obtain the final product,
[0034] Among them, the β hemihydrate gypsum has a fineness of 0.2mm square hole sieve less than or equal to 15.0wt%, lime has a calcium oxide content greater than or equal to 85wt%, and its fineness of 0.90mm square hole sieve is less than or equal to 1.5wt%. 0.125mm square hole sieve residue is less than or equal to 1...
Embodiment 3
[0037] The straw was thermally analyzed in the STA449C comprehensive analyzer produced by the German Netzsch company at a temperature increase of 5°C / min, and the ignition point temperature was measured to be 344°C;
[0038] First, the bagasse was added to the N 2 In the atmosphere, the room temperature was raised to 340°C, kept for 80 minutes, and then cooled to room temperature, and then 50% of the obtained modified plant fiber was mixed with 40% of β hemihydrate gypsum, 9.96% of ordinary Portland cement, and 0.04% of polyacrylamide according to the mass ratio. Mix to get the final product,
[0039] Among them, the sieve residue of β hemihydrate gypsum with a fineness of 0.2mm square hole sieve is less than or equal to 15.0wt%,
[0040] When in use, add water accounting for 70% of the product mass and stir for 3 minutes. It can be used for pouring and molding of plasterboard. After testing, its thermal conductivity can reach 0.045W / m·K, and the equilibrium moisture content ...
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Abstract
Description
Claims
Application Information
- IPC
- C04B28/14; C04B18/24; C04B38/02
- CPC
- Y02W30/91
- Inventors
- 蹇守卫; 蔡礼雄