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A platform for research: civil engineering, architecture and urbanism
Organic-inorganic composite phase change micro powder and preparation method thereof
The invention discloses organic-inorganic composite phase-change micro powder and a preparation method thereof. The organic-inorganic composite phase-change micro powder is prepared from acidified sepiolite and polyethylene glycol according to a mass ratio of (2-5):2, wherein sepiolite serves as a carrier material, polyethylene glycol serves as a phase-change material, the sepiolite is acidified and modified, then the polyethylene glycol and the modified sepiolite are compounded through vacuum adsorption, and the organic-inorganic composite phase change micro powder is obtained. According to the invention, sepiolite is subjected to acidification modification to remove pore impurities, improve the pore structure and increase the pore diameter, so that the loading capacity of the sepiolite is improved, and the leakage of the phase change material is reduced; the organic-inorganic composite phase-change micro powder is resistant to alkali corrosion, and has good compatibility with building materials; and the organic-inorganic composite phase-change micro powder is used for replacing cement in equal mass to prepare a cement-based phase change material, so that the cement hydration maximum heat release rate peak value and hydration heat release amount can be reduced, and the concrete cracking phenomenon caused by temperature stress is effectively reduced.
本发明公开了一种有机无机复合相变微粉及制备方法，其原料包括经过酸化的海泡石和聚乙二醇，其中，海泡石与聚乙二醇的质量比为(2～5)：2，制备以海泡石为载体材料，以聚乙二醇为相变材料，首先对海泡石进行酸化改性，然后将聚乙二醇与改性海泡石利用真空吸附进行复合，得到所述有机无机复合相变微粉。本发明通过对海泡石的酸化改性可以去除其孔隙杂质，改善孔结构增大孔径，从而提高海泡石的负载能力，减少相变材料的泄漏，本发明可耐碱腐蚀，与建筑材料间具有良好的相容性，将本发明等质量取代水泥制成水泥基相变材料，可降低水泥水化最大放热速率峰值和水化放热量，有效的减少因为温度应力造成的混凝土开裂现象。
Organic-inorganic composite phase change micro powder and preparation method thereof
The invention discloses organic-inorganic composite phase-change micro powder and a preparation method thereof. The organic-inorganic composite phase-change micro powder is prepared from acidified sepiolite and polyethylene glycol according to a mass ratio of (2-5):2, wherein sepiolite serves as a carrier material, polyethylene glycol serves as a phase-change material, the sepiolite is acidified and modified, then the polyethylene glycol and the modified sepiolite are compounded through vacuum adsorption, and the organic-inorganic composite phase change micro powder is obtained. According to the invention, sepiolite is subjected to acidification modification to remove pore impurities, improve the pore structure and increase the pore diameter, so that the loading capacity of the sepiolite is improved, and the leakage of the phase change material is reduced; the organic-inorganic composite phase-change micro powder is resistant to alkali corrosion, and has good compatibility with building materials; and the organic-inorganic composite phase-change micro powder is used for replacing cement in equal mass to prepare a cement-based phase change material, so that the cement hydration maximum heat release rate peak value and hydration heat release amount can be reduced, and the concrete cracking phenomenon caused by temperature stress is effectively reduced.
本发明公开了一种有机无机复合相变微粉及制备方法，其原料包括经过酸化的海泡石和聚乙二醇，其中，海泡石与聚乙二醇的质量比为(2～5)：2，制备以海泡石为载体材料，以聚乙二醇为相变材料，首先对海泡石进行酸化改性，然后将聚乙二醇与改性海泡石利用真空吸附进行复合，得到所述有机无机复合相变微粉。本发明通过对海泡石的酸化改性可以去除其孔隙杂质，改善孔结构增大孔径，从而提高海泡石的负载能力，减少相变材料的泄漏，本发明可耐碱腐蚀，与建筑材料间具有良好的相容性，将本发明等质量取代水泥制成水泥基相变材料，可降低水泥水化最大放热速率峰值和水化放热量，有效的减少因为温度应力造成的混凝土开裂现象。
Organic-inorganic composite phase change micro powder and preparation method thereof
有机无机复合相变微粉及制备方法
JIANG JINYANG (author) / JU SIYI (author) / WANG LIGUO (author) / WANG FENGJUAN (author) / XIN ZHONGYI (author) / QIN ZHIBIN (author) / SU WEIGUO (author)
2021-07-13
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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