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Low-thermal-conductivity multi-layer composite magnesium hercynite brick and preparation method thereof
The invention belongs to the technical field of refractory materials, and particularly relates to a low-thermal-conductivity multi-layer composite magnesium hercynite brick and a preparation method thereof. The preparation method comprises the following steps: by taking 4-ethoxyphenylboronic acid as a modifier, introducing boric acid ester groups on the surfaces of phenolic resin hollow microspheres to prepare boric acid ester modified phenolic resin hollow microspheres; the preparation method comprises the following steps: preparing epoxy-group organic silicon resin from organic silicon resin and epoxy silane, modifying alkaline silica sol by using the epoxy-group organic silicon resin, introducing an organic polymer to the particle surface of the alkaline silica sol to prepare modified silica sol, and mixing the modified silica sol with sodium hexametaphosphate to prepare the composite binder. The high-purity magnesia, the fused magnesia, the fused hercynite, the alpha-Al2O3 micro powder, the metal iron powder, the metal aluminum powder, the composite binder and the borate modified phenolic resin hollow microspheres are compounded, and the prepared multi-layer composite magnesium hercynite brick is low in heat conductivity coefficient and also has excellent mechanical property, high temperature resistance and corrosion resistance.
本发明属于耐火材料技术领域，具体涉及一种低导热多层复合镁铁铝尖晶石砖及其制备方法。本发明以4‑乙氧基苯硼酸为改性剂，在酚醛树脂空心微球表面引入硼酸酯基团，制得硼酸酯改性酚醛树脂空心微球；利用有机硅树脂与环氧硅烷制备得到环氧基有机硅树脂，然后利用环氧基有机硅树脂对碱性硅溶胶进行改性，在其颗粒表面引入有机聚合物，制得改性硅溶胶，并将改性硅溶胶与六偏磷酸钠混合制得复合粘结剂。本发明将高纯镁砂、电熔镁砂、电熔铁铝尖晶石、α‑Al2O3微粉、金属铁粉、金属铝粉、复合粘结剂、硼酸酯改性酚醛树脂空心微球进行复配，制备得到的多层复合镁铁铝尖晶石砖导热系数低，且还具备优异的力学性能、耐高温性能和抗腐蚀性能。
Low-thermal-conductivity multi-layer composite magnesium hercynite brick and preparation method thereof
The invention belongs to the technical field of refractory materials, and particularly relates to a low-thermal-conductivity multi-layer composite magnesium hercynite brick and a preparation method thereof. The preparation method comprises the following steps: by taking 4-ethoxyphenylboronic acid as a modifier, introducing boric acid ester groups on the surfaces of phenolic resin hollow microspheres to prepare boric acid ester modified phenolic resin hollow microspheres; the preparation method comprises the following steps: preparing epoxy-group organic silicon resin from organic silicon resin and epoxy silane, modifying alkaline silica sol by using the epoxy-group organic silicon resin, introducing an organic polymer to the particle surface of the alkaline silica sol to prepare modified silica sol, and mixing the modified silica sol with sodium hexametaphosphate to prepare the composite binder. The high-purity magnesia, the fused magnesia, the fused hercynite, the alpha-Al2O3 micro powder, the metal iron powder, the metal aluminum powder, the composite binder and the borate modified phenolic resin hollow microspheres are compounded, and the prepared multi-layer composite magnesium hercynite brick is low in heat conductivity coefficient and also has excellent mechanical property, high temperature resistance and corrosion resistance.
本发明属于耐火材料技术领域，具体涉及一种低导热多层复合镁铁铝尖晶石砖及其制备方法。本发明以4‑乙氧基苯硼酸为改性剂，在酚醛树脂空心微球表面引入硼酸酯基团，制得硼酸酯改性酚醛树脂空心微球；利用有机硅树脂与环氧硅烷制备得到环氧基有机硅树脂，然后利用环氧基有机硅树脂对碱性硅溶胶进行改性，在其颗粒表面引入有机聚合物，制得改性硅溶胶，并将改性硅溶胶与六偏磷酸钠混合制得复合粘结剂。本发明将高纯镁砂、电熔镁砂、电熔铁铝尖晶石、α‑Al2O3微粉、金属铁粉、金属铝粉、复合粘结剂、硼酸酯改性酚醛树脂空心微球进行复配，制备得到的多层复合镁铁铝尖晶石砖导热系数低，且还具备优异的力学性能、耐高温性能和抗腐蚀性能。
Low-thermal-conductivity multi-layer composite magnesium hercynite brick and preparation method thereof
一种低导热多层复合镁铁铝尖晶石砖及其制备方法
MENG LINGXIAO (author) / LI WEI (author) / LI YUANJIN (author) / DING WENGUANG (author) / LI SHUO (author) / ZHANG YAQUAN (author)
2024-12-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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