Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Asbestos-free composite fiber reinforced calcium silicate board and preparation method thereof
The invention relates to an asbestos-free composite fiber reinforced calcium silicate board and a preparation method thereof. The calcium silicate board is mainly prepared from water and the followingraw materials: 19-21 parts of slaked lime, 24-26 parts of Portland cement, 21-23 parts of diatomite, 24-26 parts of quartz sand, 4.5-5.5 parts of silica fume, 3.5-4.5 parts of metakaolin, 4.5-5.5 parts of modified ramie fibers, 2.5-3.5 parts of rock wool fibers and 1.6-1.8 parts of potassium sulfate. The modified ramie fibers are prepared by the following steps: dissolving gamma-aminopropyltriethoxysilane in an ethanol aqueous solution to prepare a modifier; and spraying a modifier to the degummed refined dry ramie fibers, uniformly mixing, and drying to remove ethanol. According to the calcium silicate board, modified ramie fibers and rock wool fibers are compounded to serve as reinforcing fibers, and the calcium silicate board is good in appearance quality, low in water absorption rateand wet expansion rate, good in water resistance and moisture resistance, high in mechanical property, good in freeze thawing resistance and dry-wet cycle resistance and stable in property.
本发明涉及一种无石棉复合纤维增强硅酸钙板及其制备方法，该硅酸钙板主要由水和以下原料制成：消石灰19‑21份、硅酸盐水泥24‑26份、硅藻土21‑23份、石英砂24‑26份、硅灰4.5‑5.5份、偏高岭土3.5‑4.5份、改性苎麻纤维4.5‑5.5份、岩棉纤维2.5‑3.5份、硫酸钾1.6‑1.8份；所述改性苎麻纤维是将γ‑氨丙基三乙氧基硅烷溶于乙醇水溶液中制成改性剂；向脱胶后的苎麻精干麻纤维喷洒改性剂并拌和均匀，干燥除去乙醇制得。该硅酸钙板以改性苎麻纤维、岩棉纤维复配作为增强纤维，板材外观质量好，吸水率和湿涨率低，具有较好的耐水耐湿性，力学性能高，抗冻融、抗干湿循环性能好，性质稳定。
Asbestos-free composite fiber reinforced calcium silicate board and preparation method thereof
The invention relates to an asbestos-free composite fiber reinforced calcium silicate board and a preparation method thereof. The calcium silicate board is mainly prepared from water and the followingraw materials: 19-21 parts of slaked lime, 24-26 parts of Portland cement, 21-23 parts of diatomite, 24-26 parts of quartz sand, 4.5-5.5 parts of silica fume, 3.5-4.5 parts of metakaolin, 4.5-5.5 parts of modified ramie fibers, 2.5-3.5 parts of rock wool fibers and 1.6-1.8 parts of potassium sulfate. The modified ramie fibers are prepared by the following steps: dissolving gamma-aminopropyltriethoxysilane in an ethanol aqueous solution to prepare a modifier; and spraying a modifier to the degummed refined dry ramie fibers, uniformly mixing, and drying to remove ethanol. According to the calcium silicate board, modified ramie fibers and rock wool fibers are compounded to serve as reinforcing fibers, and the calcium silicate board is good in appearance quality, low in water absorption rateand wet expansion rate, good in water resistance and moisture resistance, high in mechanical property, good in freeze thawing resistance and dry-wet cycle resistance and stable in property.
本发明涉及一种无石棉复合纤维增强硅酸钙板及其制备方法，该硅酸钙板主要由水和以下原料制成：消石灰19‑21份、硅酸盐水泥24‑26份、硅藻土21‑23份、石英砂24‑26份、硅灰4.5‑5.5份、偏高岭土3.5‑4.5份、改性苎麻纤维4.5‑5.5份、岩棉纤维2.5‑3.5份、硫酸钾1.6‑1.8份；所述改性苎麻纤维是将γ‑氨丙基三乙氧基硅烷溶于乙醇水溶液中制成改性剂；向脱胶后的苎麻精干麻纤维喷洒改性剂并拌和均匀，干燥除去乙醇制得。该硅酸钙板以改性苎麻纤维、岩棉纤维复配作为增强纤维，板材外观质量好，吸水率和湿涨率低，具有较好的耐水耐湿性，力学性能高，抗冻融、抗干湿循环性能好，性质稳定。
Asbestos-free composite fiber reinforced calcium silicate board and preparation method thereof
一种无石棉复合纤维增强硅酸钙板及其制备方法
LYU CHUNFEN (Autor:in)
29.09.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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