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A platform for research: civil engineering, architecture and urbanism
Preparation method of sepiolite fiber reinforced silicon dioxide aerogel
The invention relates to the technical field of silicon dioxide aerogel, in particular to a preparation method of sepiolite fiber reinforced silicon dioxide aerogel. The method comprises the following steps: S1, carrying out pre-impurity removal treatment on sepiolite raw ore to obtain coarsely purified sepiolite; s2, carrying out hydrothermal acid treatment on the coarsely purified sepiolite to obtain acidified sepiolite; s3, carrying out freezing and thawing circulation on the acidified sepiolite; s4, washing the sepiolite after the freezing and thawing cycle, and then drying the sepiolite; s5, the dried sepiolite filter cake is put into a grinding tank to be ground to be fluffy, agglomerated fiber bundles are released, and a nanometer sepiolite fiber sample is obtained. The invention provides a preparation method of sepiolite fiber reinforced silicon dioxide aerogel, which comprises the following steps: preparing nano sepiolite fiber by adopting hydrothermal acid treatment, introducing the nano sepiolite fiber as a framework into S < 2 > O < 2 > sol, and preparing an SEP-NF/S < 2 > O < 2 > aerogel block through gelation, hydrophobic modification, solvent replacement and normal-pressure drying.
本发明涉及二氧化硅气凝胶技术领域，尤其涉及一种海泡石纤维增强二氧化硅气凝胶的制备方法。骤如下：S1：对海泡石原矿进行预除杂处理，获得粗提纯海泡石；S2：对粗提纯海泡石进行水热酸处理，得到酸化海泡石；S3：对酸化海泡石进行冻融循环；S4：对冻融循环后的海泡石在洗涤后进行烘干处理；S5：将烘干后的海泡石滤饼放入研磨罐中研磨蓬松，对团聚的纤维束进行松解，得到纳米海泡石纤维样品。本发明提供的一种海泡石纤维增强二氧化硅气凝胶的制备方法，通过采用水热酸处理制备了纳米海泡石纤维，将其作为骨架引入S iO2溶胶，经凝胶、疏水改性和溶剂置换，常压干燥制备了SEP‑NF/S iO2气凝胶块体。
Preparation method of sepiolite fiber reinforced silicon dioxide aerogel
The invention relates to the technical field of silicon dioxide aerogel, in particular to a preparation method of sepiolite fiber reinforced silicon dioxide aerogel. The method comprises the following steps: S1, carrying out pre-impurity removal treatment on sepiolite raw ore to obtain coarsely purified sepiolite; s2, carrying out hydrothermal acid treatment on the coarsely purified sepiolite to obtain acidified sepiolite; s3, carrying out freezing and thawing circulation on the acidified sepiolite; s4, washing the sepiolite after the freezing and thawing cycle, and then drying the sepiolite; s5, the dried sepiolite filter cake is put into a grinding tank to be ground to be fluffy, agglomerated fiber bundles are released, and a nanometer sepiolite fiber sample is obtained. The invention provides a preparation method of sepiolite fiber reinforced silicon dioxide aerogel, which comprises the following steps: preparing nano sepiolite fiber by adopting hydrothermal acid treatment, introducing the nano sepiolite fiber as a framework into S < 2 > O < 2 > sol, and preparing an SEP-NF/S < 2 > O < 2 > aerogel block through gelation, hydrophobic modification, solvent replacement and normal-pressure drying.
本发明涉及二氧化硅气凝胶技术领域，尤其涉及一种海泡石纤维增强二氧化硅气凝胶的制备方法。骤如下：S1：对海泡石原矿进行预除杂处理，获得粗提纯海泡石；S2：对粗提纯海泡石进行水热酸处理，得到酸化海泡石；S3：对酸化海泡石进行冻融循环；S4：对冻融循环后的海泡石在洗涤后进行烘干处理；S5：将烘干后的海泡石滤饼放入研磨罐中研磨蓬松，对团聚的纤维束进行松解，得到纳米海泡石纤维样品。本发明提供的一种海泡石纤维增强二氧化硅气凝胶的制备方法，通过采用水热酸处理制备了纳米海泡石纤维，将其作为骨架引入S iO2溶胶，经凝胶、疏水改性和溶剂置换，常压干燥制备了SEP‑NF/S iO2气凝胶块体。
Preparation method of sepiolite fiber reinforced silicon dioxide aerogel
一种海泡石纤维增强二氧化硅气凝胶的制备方法
HAN FENGLEI (author) / ZHOU CHAO (author) / LI SIYING (author) / LIU ZONGHAN (author) / LYU YANG (author)
2023-12-08
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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