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Low-thermal-conductivity multi-layer composite magnesium aluminate spinel brick and preparation method thereof
The invention belongs to the technical field of refractory materials, and particularly relates to a low-thermal-conductivity multilayer composite magnesium aluminate spinel brick and a preparation method thereof, and the low-thermal-conductivity multilayer composite magnesium aluminate spinel brick comprises a working layer, a thermal insulation layer and a thermal insulation layer. Magnesium aluminate spinel hollow microspheres are introduced in the preparation process of the thermal insulation layer, heat conduction in the material is reduced, the thermal conductivity of the product is reduced, in addition, ferric oxyhydroxide modified diatomite is introduced to provide a large number of hydroxyl groups for the surface of the diatomite, chemical bonding is formed between the hydroxyl groups and water glass in the raw materials, good interface bonding is formed, and the thermal insulation performance of the product is improved. In the preparation process of the working layer, water glass can be used as an alkali activator to act together with metakaolin formed by mixing styrene-acrylic emulsion and a silane coupling agent to form a metakaolin-based geopolymer with a stable three-dimensional network structure, so that the mechanical property of the product is further improved.
本发明属于耐火材料技术领域，特别涉及一种低导热多层复合镁铝尖晶石砖及其制备方法，包括工作层、保温层和隔热层。通过在保温层的制备过程中引入镁铝尖晶石空心微球，有利于降低材料中的热量传导，降低产品的热传导率，另外通过引入羟基氧化铁改性的硅藻土为硅藻土表面提供了大量羟基，与原料中的水玻璃间形成化学键合，形成良好的界面结合，在工作层的制备过程中水玻璃可以作为碱激发剂与苯丙乳液和硅烷偶联剂混合的偏高岭土共同作用形成具有稳定的三维网络结构的偏高岭土基地聚合物，进一步提高了产品的力学性能。
Low-thermal-conductivity multi-layer composite magnesium aluminate spinel brick and preparation method thereof
The invention belongs to the technical field of refractory materials, and particularly relates to a low-thermal-conductivity multilayer composite magnesium aluminate spinel brick and a preparation method thereof, and the low-thermal-conductivity multilayer composite magnesium aluminate spinel brick comprises a working layer, a thermal insulation layer and a thermal insulation layer. Magnesium aluminate spinel hollow microspheres are introduced in the preparation process of the thermal insulation layer, heat conduction in the material is reduced, the thermal conductivity of the product is reduced, in addition, ferric oxyhydroxide modified diatomite is introduced to provide a large number of hydroxyl groups for the surface of the diatomite, chemical bonding is formed between the hydroxyl groups and water glass in the raw materials, good interface bonding is formed, and the thermal insulation performance of the product is improved. In the preparation process of the working layer, water glass can be used as an alkali activator to act together with metakaolin formed by mixing styrene-acrylic emulsion and a silane coupling agent to form a metakaolin-based geopolymer with a stable three-dimensional network structure, so that the mechanical property of the product is further improved.
本发明属于耐火材料技术领域，特别涉及一种低导热多层复合镁铝尖晶石砖及其制备方法，包括工作层、保温层和隔热层。通过在保温层的制备过程中引入镁铝尖晶石空心微球，有利于降低材料中的热量传导，降低产品的热传导率，另外通过引入羟基氧化铁改性的硅藻土为硅藻土表面提供了大量羟基，与原料中的水玻璃间形成化学键合，形成良好的界面结合，在工作层的制备过程中水玻璃可以作为碱激发剂与苯丙乳液和硅烷偶联剂混合的偏高岭土共同作用形成具有稳定的三维网络结构的偏高岭土基地聚合物，进一步提高了产品的力学性能。
Low-thermal-conductivity multi-layer composite magnesium aluminate spinel brick and preparation method thereof
一种低导热多层复合镁铝尖晶石砖及其制备方法
WANG XUYUAN (author) / YUAN LIN (author) / LI WEI (author) / MENG LINGXIAO (author) / LI YUANJIN (author) / ZHANG YAQUAN (author)
2024-10-25
Patent
Electronic Resource
Chinese
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