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Preparation method of high-strength low-density lightweight silica brick
The invention discloses a preparation method of a high-strength low-density light-weight silica brick, which comprises the following steps: S1, taking a siliceous raw material, spherical starch and a compound mineralizer mixture according to a formula ratio, and carrying out ball milling to obtain a first mixture; s2, adding polycarbosilane and ferrocene into the first mixture obtained in the step S1 according to a formula ratio, carrying out ball milling on a ball mill to obtain a second mixture, and uniformly mixing the second mixture with the polycarbosilane and the ferrocene; s3, carrying out compression molding on the second mixture obtained in the step S2 in a mold, and drying at the temperature of 60-100 DEG C; s4, pre-sintering the dried silica bricks in a first sintering temperature range to generate silicon carbide nanowhiskers; and S5, carrying out final sintering on the pre-sintered silica brick in a second sintering temperature range to obtain the silicon carbide nano-whisker reinforced high-strength low-density light-weight silica brick, the high-porosity and high-strength light-weight silica brick can be prepared, the strength of the light-weight silica brick can still be kept under the condition that the volume density is reduced, and the heat conductivity coefficient is lower.
本发明公开了一种高强度低密度轻质硅砖的制备方法，包括以下步骤：S1、取配方量的硅质原料、球形淀粉、复合矿化剂混合料进行球磨，得到第一混合料；S2、向步骤S1所得的第一混合料中加入配方量的聚碳硅烷、二茂铁，并在球磨机上球磨，得到第二混合料，并混合均匀；S3、将步骤S2所得的第二混合料在模具中压制成型，在60‑100℃的温度条件下干燥；S4、将干燥后的硅砖在第一烧结温度范围内进行预烧结，生成碳化硅纳米晶须；S5、将预烧结后的硅砖在第二烧结温度范围内进行最终烧结，得到碳化硅纳米晶须增强的高强度低密度轻质硅砖；本发明可制备出高气孔率高强度的轻质硅砖，使轻质硅砖在体密度减小的条件下，仍可以保持强度，并使得导热系数更低。
Preparation method of high-strength low-density lightweight silica brick
The invention discloses a preparation method of a high-strength low-density light-weight silica brick, which comprises the following steps: S1, taking a siliceous raw material, spherical starch and a compound mineralizer mixture according to a formula ratio, and carrying out ball milling to obtain a first mixture; s2, adding polycarbosilane and ferrocene into the first mixture obtained in the step S1 according to a formula ratio, carrying out ball milling on a ball mill to obtain a second mixture, and uniformly mixing the second mixture with the polycarbosilane and the ferrocene; s3, carrying out compression molding on the second mixture obtained in the step S2 in a mold, and drying at the temperature of 60-100 DEG C; s4, pre-sintering the dried silica bricks in a first sintering temperature range to generate silicon carbide nanowhiskers; and S5, carrying out final sintering on the pre-sintered silica brick in a second sintering temperature range to obtain the silicon carbide nano-whisker reinforced high-strength low-density light-weight silica brick, the high-porosity and high-strength light-weight silica brick can be prepared, the strength of the light-weight silica brick can still be kept under the condition that the volume density is reduced, and the heat conductivity coefficient is lower.
本发明公开了一种高强度低密度轻质硅砖的制备方法，包括以下步骤：S1、取配方量的硅质原料、球形淀粉、复合矿化剂混合料进行球磨，得到第一混合料；S2、向步骤S1所得的第一混合料中加入配方量的聚碳硅烷、二茂铁，并在球磨机上球磨，得到第二混合料，并混合均匀；S3、将步骤S2所得的第二混合料在模具中压制成型，在60‑100℃的温度条件下干燥；S4、将干燥后的硅砖在第一烧结温度范围内进行预烧结，生成碳化硅纳米晶须；S5、将预烧结后的硅砖在第二烧结温度范围内进行最终烧结，得到碳化硅纳米晶须增强的高强度低密度轻质硅砖；本发明可制备出高气孔率高强度的轻质硅砖，使轻质硅砖在体密度减小的条件下，仍可以保持强度，并使得导热系数更低。
Preparation method of high-strength low-density lightweight silica brick
一种高强度低密度轻质硅砖的制备方法
XIANG LIUYI (author) / SHU ZHIQING (author) / LIU QINGQUAN (author) / WANG HAIPENG (author) / XIE WEN (author) / XU NANA (author) / ZHANG XIN (author) / TANG YUEZU (author) / WANG JINBIAO (author) / TAN SIQI (author)
2024-10-08
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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