Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Asbestos-free straw fiber reinforced cement board and preparation method thereof
The invention relates to an asbestos-free straw fiber reinforced cement board and a preparation method thereof. The straw fiber reinforced cement board is mainly prepared from, by weight, 6-8 parts ofmodified wheat straw fibers, 5-6 parts of silica fume, 48-52 parts of cement, 10-12 parts of metakaolin, 20-22 parts of quartz sands and 5-6 parts of fly ash. A preparation technology of the modifiedwheat straw fibers comprises the following steps: 1) cutting dry wheat straws into a short material, and soaking and softening with water to obtain a prepared material; 2) performing steam explosionon the prepared material to obtain an exploded material; 3) sequentially carrying out alkaline leaching and water washing on the exploded material to obtain a fiber material; and 4) modifying the fiber material with gamma-aminopropyltriethoxysilane to obtain the asbestos-free straw fiber reinforced cement board. The asbestos-free straw fiber reinforced cement board is good in appearance quality, low in water absorption and wet expansion rate, good in water resistance and moisture resistance, high in mechanical properties, resistant to freeze thawing and hot water, good in dry-wet cycle performance, stable in properties, green and environmentally friendly, and can replace a wood pulp fiber reinforced cement board.
本发明涉及一种无石棉秸秆纤维增强水泥板及其制备方法，该秸秆纤维增强水泥板主要由以下重量份的原料制成：改性麦秸纤维6‑8份、硅灰5‑6份、水泥48‑52份、偏高岭土10‑12份、石英砂20‑22份、粉煤灰5‑6份；其中所述改性麦秸纤维的制备方法包括：1)将干燥麦秸切断成短料，用水浸泡软化得预备料；2)将预备料进行蒸汽爆破得爆破料；3)将爆破料依次进行碱浸和水洗得纤维料；3)用γ‑氨丙基三乙氧基硅烷对纤维料进行改性即得。该无石棉秸秆纤维增强水泥板外观质量好，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、热水、干湿循环性能好，性质稳定，绿色环保，能替代木浆纤维增强水泥板的应用。
Asbestos-free straw fiber reinforced cement board and preparation method thereof
The invention relates to an asbestos-free straw fiber reinforced cement board and a preparation method thereof. The straw fiber reinforced cement board is mainly prepared from, by weight, 6-8 parts ofmodified wheat straw fibers, 5-6 parts of silica fume, 48-52 parts of cement, 10-12 parts of metakaolin, 20-22 parts of quartz sands and 5-6 parts of fly ash. A preparation technology of the modifiedwheat straw fibers comprises the following steps: 1) cutting dry wheat straws into a short material, and soaking and softening with water to obtain a prepared material; 2) performing steam explosionon the prepared material to obtain an exploded material; 3) sequentially carrying out alkaline leaching and water washing on the exploded material to obtain a fiber material; and 4) modifying the fiber material with gamma-aminopropyltriethoxysilane to obtain the asbestos-free straw fiber reinforced cement board. The asbestos-free straw fiber reinforced cement board is good in appearance quality, low in water absorption and wet expansion rate, good in water resistance and moisture resistance, high in mechanical properties, resistant to freeze thawing and hot water, good in dry-wet cycle performance, stable in properties, green and environmentally friendly, and can replace a wood pulp fiber reinforced cement board.
本发明涉及一种无石棉秸秆纤维增强水泥板及其制备方法，该秸秆纤维增强水泥板主要由以下重量份的原料制成：改性麦秸纤维6‑8份、硅灰5‑6份、水泥48‑52份、偏高岭土10‑12份、石英砂20‑22份、粉煤灰5‑6份；其中所述改性麦秸纤维的制备方法包括：1)将干燥麦秸切断成短料，用水浸泡软化得预备料；2)将预备料进行蒸汽爆破得爆破料；3)将爆破料依次进行碱浸和水洗得纤维料；3)用γ‑氨丙基三乙氧基硅烷对纤维料进行改性即得。该无石棉秸秆纤维增强水泥板外观质量好，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、热水、干湿循环性能好，性质稳定，绿色环保，能替代木浆纤维增强水泥板的应用。
Asbestos-free straw fiber reinforced cement board and preparation method thereof
一种无石棉秸秆纤维增强水泥板及其制备方法
LYU CHUNFEN (Autor:in)
02.06.2020
Patent
Elektronische Ressource
Chinesisch
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