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A platform for research: civil engineering, architecture and urbanism
Aerogel insulating brick and preparation method thereof
The invention discloses an aerogel insulating brick which comprises an insulating brick body, the insulating brick body is a porous brick, and pores of the porous brick are filled with aerogel. The invention also provides a preparation method of the aerogel insulating brick. The preparation method comprises the following steps: step S1, preparing a porous brick; s2, preparing silicon dioxide hydrosol; s3, immersing the porous brick into the silicon dioxide hydrosol, and aging at room temperature for 18-36 hours; s4, soaking the porous brick treated in the step S3 into water for washing, and soaking the washed porous brick into ethanol for replacing water; and step S5, drying the porous brick treated in the step S4 at normal pressure for 8-12 hours, wherein the drying temperature is 30-50 DEG C. The porous brick is firstly sintered, and then the aerogel is formed in the pores of the porous brick, so that the situation that micropores of the aerogel are filled with particles in slurry due to the fact that the aerogel is directly doped into the slurry is avoided, the situation that the aerogel structure shrinks and collapses during high-temperature sintering is also avoided, and the thermal insulation performance of the thermal insulation brick is improved.
本发明公开了一种气凝胶保温砖，包括保温砖本体，保温砖本体为多孔砖，多孔砖的孔隙中填充有气凝胶。本申请还提供一种上述气凝胶保温砖的制备方法，包括以下步骤：步骤S1、制备多孔砖；步骤S2、制备二氧化硅水溶胶；步骤S3、将所述多孔砖浸没到所述二氧化硅水溶胶中，室温下老化18‑36h；步骤S4、将经步骤S3处理的多孔砖浸入水中洗涤，将洗涤后的多孔砖浸入乙醇中置换出水；步骤S5、将经步骤S4处理的多孔砖在常压下干燥8‑12h，干燥温度为30‑50℃。通过先烧结多孔砖，再在多孔砖的孔隙中形成气凝胶，既避免了直接将气凝胶掺入浆料中，气凝胶的微孔隙会被浆料中的微粒填充，又避免了高温烧结时气凝胶结构会发生收缩和坍塌，提高了保温砖的保温性能。
Aerogel insulating brick and preparation method thereof
The invention discloses an aerogel insulating brick which comprises an insulating brick body, the insulating brick body is a porous brick, and pores of the porous brick are filled with aerogel. The invention also provides a preparation method of the aerogel insulating brick. The preparation method comprises the following steps: step S1, preparing a porous brick; s2, preparing silicon dioxide hydrosol; s3, immersing the porous brick into the silicon dioxide hydrosol, and aging at room temperature for 18-36 hours; s4, soaking the porous brick treated in the step S3 into water for washing, and soaking the washed porous brick into ethanol for replacing water; and step S5, drying the porous brick treated in the step S4 at normal pressure for 8-12 hours, wherein the drying temperature is 30-50 DEG C. The porous brick is firstly sintered, and then the aerogel is formed in the pores of the porous brick, so that the situation that micropores of the aerogel are filled with particles in slurry due to the fact that the aerogel is directly doped into the slurry is avoided, the situation that the aerogel structure shrinks and collapses during high-temperature sintering is also avoided, and the thermal insulation performance of the thermal insulation brick is improved.
本发明公开了一种气凝胶保温砖，包括保温砖本体，保温砖本体为多孔砖，多孔砖的孔隙中填充有气凝胶。本申请还提供一种上述气凝胶保温砖的制备方法，包括以下步骤：步骤S1、制备多孔砖；步骤S2、制备二氧化硅水溶胶；步骤S3、将所述多孔砖浸没到所述二氧化硅水溶胶中，室温下老化18‑36h；步骤S4、将经步骤S3处理的多孔砖浸入水中洗涤，将洗涤后的多孔砖浸入乙醇中置换出水；步骤S5、将经步骤S4处理的多孔砖在常压下干燥8‑12h，干燥温度为30‑50℃。通过先烧结多孔砖，再在多孔砖的孔隙中形成气凝胶，既避免了直接将气凝胶掺入浆料中，气凝胶的微孔隙会被浆料中的微粒填充，又避免了高温烧结时气凝胶结构会发生收缩和坍塌，提高了保温砖的保温性能。
Aerogel insulating brick and preparation method thereof
一种气凝胶保温砖及其制备方法
QIN ZHENGGUO (author) / DUAN HAOSHENG (author)
2024-03-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
C01B
NON-METALLIC ELEMENTS
,
Nichtmetallische Elemente
/
E01C
Bau von Straßen, Sportplätzen oder dgl., Decken dafür
,
CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE
/
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS
/
E04C
STRUCTURAL ELEMENTS
,
Bauelemente
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