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A platform for research: civil engineering, architecture and urbanism
Potassium titanate whisker modification-based high-strength high-hydrophobicity porous geopolymer thermal insulation material as well as preparation method and application thereof
The invention relates to a potassium titanate whisker modification-based high-strength high-hydrophobicity porous geopolymer thermal insulation material as well as a preparation method and applicationthereof The preparation method comprises the steps: uniformly mixing fly ash, metakaolin and potassium titanate whiskers in proportion, sequentially adding a certain amount of an alkali activator, afoaming agent and a foam stabilizer, uniformly stirring to obtain slurry, injecting the slurry into a mold, foaming, and curing to obtain a porous geopolymer semi-finished product; and finally, soaking and modifying the porous geopolymer semi-finished product in a hydrophobic modifier solution, taking out and drying. The compressive strength of the prepared thermal insulation material is as high as 6.41 MPa, the heat conductivity coefficient is as low as 0.043 W/m*K, the static water contact angle is 150 degrees or above, and the thermal insulation material has excellent mechanical properties,thermal insulation properties and waterproofness. The inorganic solid waste fly ash is recycled, the preparation process is simple, high-temperature sintering and high-temperature maintenance are notneeded, the production and use cost is low, and the environmental protection advantage is obvious.
本发明涉及一种基于钛酸钾晶须改性的高强度高疏水性多孔地质聚合物保温材料及其制备方法、应用。首先将粉煤灰、偏高岭土、钛酸钾晶须按比例混合均匀，再依次加入一定量碱激发剂、发泡剂、稳泡剂搅拌均匀得到浆料，接着将浆料注入模具中发泡、养护得到多孔地质聚合物半成品，最后将多孔地质聚合物半成品置于疏水改性剂溶液中浸泡改性后取出干燥即可。由此制得的保温材料抗压强度高达6.41MPa，导热系数低至0.043W/m·K，静态水接触角在150°以上，表现出优异的力学性能、隔热保温性能和防水性能。本发明实现了无机固体废弃物粉煤灰的回收再利用，制备工艺简单、无需高温烧结和高温养护，生产及使用成本较低，环保优势明显。
Potassium titanate whisker modification-based high-strength high-hydrophobicity porous geopolymer thermal insulation material as well as preparation method and application thereof
The invention relates to a potassium titanate whisker modification-based high-strength high-hydrophobicity porous geopolymer thermal insulation material as well as a preparation method and applicationthereof The preparation method comprises the steps: uniformly mixing fly ash, metakaolin and potassium titanate whiskers in proportion, sequentially adding a certain amount of an alkali activator, afoaming agent and a foam stabilizer, uniformly stirring to obtain slurry, injecting the slurry into a mold, foaming, and curing to obtain a porous geopolymer semi-finished product; and finally, soaking and modifying the porous geopolymer semi-finished product in a hydrophobic modifier solution, taking out and drying. The compressive strength of the prepared thermal insulation material is as high as 6.41 MPa, the heat conductivity coefficient is as low as 0.043 W/m*K, the static water contact angle is 150 degrees or above, and the thermal insulation material has excellent mechanical properties,thermal insulation properties and waterproofness. The inorganic solid waste fly ash is recycled, the preparation process is simple, high-temperature sintering and high-temperature maintenance are notneeded, the production and use cost is low, and the environmental protection advantage is obvious.
本发明涉及一种基于钛酸钾晶须改性的高强度高疏水性多孔地质聚合物保温材料及其制备方法、应用。首先将粉煤灰、偏高岭土、钛酸钾晶须按比例混合均匀，再依次加入一定量碱激发剂、发泡剂、稳泡剂搅拌均匀得到浆料，接着将浆料注入模具中发泡、养护得到多孔地质聚合物半成品，最后将多孔地质聚合物半成品置于疏水改性剂溶液中浸泡改性后取出干燥即可。由此制得的保温材料抗压强度高达6.41MPa，导热系数低至0.043W/m·K，静态水接触角在150°以上，表现出优异的力学性能、隔热保温性能和防水性能。本发明实现了无机固体废弃物粉煤灰的回收再利用，制备工艺简单、无需高温烧结和高温养护，生产及使用成本较低，环保优势明显。
Potassium titanate whisker modification-based high-strength high-hydrophobicity porous geopolymer thermal insulation material as well as preparation method and application thereof
基于钛酸钾晶须改性的高强度高疏水性多孔地质聚合物保温材料及其制备方法、应用
WU YANGUANG (author) / CHAI KUAN (author) / LI XIAOGANG (author) / LU BOWEN (author) / DU FEIPENG (author) / HU SHUANGFENG (author) / LI LIANG (author) / ZHANG YUNFEI (author)
2021-02-23
Patent
Electronic Resource
Chinese
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