Heat-conducting fluid for reducing internal temperature rise of mass concrete and preparation method thereof
A large-volume concrete and heat-conducting fluid technology, applied in chemical instruments and methods, heat exchange materials, etc., can solve the problems of insufficient stability of microcapsule suspensions and achieve high suspension stability
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Embodiment 1
[0029] A heat-conducting fluid used to reduce the internal temperature rise of mass concrete is a microcapsule suspension, with hexadecane microcapsules as the dispersant, water as the liquid carrier, and 0.25% wt of hydroxymethyl cellulose as the Dispersant, the pH of the liquid system is pH=8, the concentration of the phase change material hexadecane microcapsules is 20%wt, the wall material of the hexadecane microcapsules is polyurea-melamine resin, and the phase transition temperature is 17.42°C, the phase transition enthalpy is 147.93J / g, and the particle size range is 1.51-10.48um.
[0030] The specific preparation process of the heat transfer fluid used to reduce the internal temperature rise of mass concrete is as follows:
[0031] Dissolve hydroxymethyl cellulose in water at 70°C so that its molecules can fully stretch in water, prepare a 5%wt solution and cool to room temperature for use;
[0032] Add 1 mass part of hexadecane microcapsules to 4 mass parts of water,...
Embodiment 2
[0035] A heat-conducting fluid used to reduce the internal temperature rise of mass concrete is a microcapsule suspension, with hexadecane microcapsules as the dispersant, water as the liquid carrier, and 0.2% wt of hydroxymethyl cellulose as the Dispersant, the pH of the liquid system is pH=7, the concentration of the phase change material hexadecane microcapsules is 10%wt, the wall material of the hexadecane microcapsules is polyurea-melamine resin, and the phase transition temperature is 17.42°C, the phase transition enthalpy is 147.93J / g, and the particle size range is 1.51-10.48um.
[0036] The specific preparation process of the heat transfer fluid used to reduce the internal temperature rise of mass concrete is as follows:
[0037] Dissolve hydroxymethyl cellulose in water at 60°C so that its molecules can fully stretch in water, prepare a 5%wt solution and cool to room temperature for use;
[0038] Add 1 mass part of hexadecane microcapsules to 9 mass parts of water, ...
Embodiment 3
[0041] A heat-conducting fluid used to reduce the internal temperature rise of mass concrete is a microcapsule suspension, with hexadecane microcapsules as the dispersant, water as the liquid carrier, and 0.3% wt of hydroxymethyl cellulose as the Dispersant, the pH of the liquid system is pH=9, the concentration of the phase change material hexadecane microcapsules is 25%wt, the wall material of the hexadecane microcapsules is polyurea-melamine resin, and the phase transition temperature is 17.42°C, the phase transition enthalpy is 147.93J / g, and the particle size range is 1.51-10.48um.
[0042] The specific preparation process of the heat transfer fluid used to reduce the internal temperature rise of mass concrete is as follows:
[0043] Dissolve hydroxymethyl cellulose in water at 50°C so that its molecules can fully stretch in water, prepare a 5%wt solution and cool to room temperature for use;
[0044] Add 1 mass part of hexadecane microcapsules to 3 mass parts of water, ...
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