Phase change latent heat environment-friendly energy-saving type building material and preparation method thereof

Abstract

The invention discloses a phase change latent heat environment-friendly energy-saving type building material and a preparation method thereof. The phase change latent heat environment-friendly energy-saving type building material comprises 50-80 parts of cement, 30-50 parts of diatomite, 0.5-3.5 parts of acetyl tributyl citrate, 1-5 parts of an aliphatic water reducer, 10-15 parts of poly-2,6-naphthalene acid ethyl ester fiber, 2-7 parts of expanded vermiculite, 30-50 parts of triethylene glycol monomethyl ether, 8-15 parts of sebacic acid, 5-10 parts of tetradecanoic acid and 12-20 parts of n-hexadecane. The method comprises the steps that the sebacic acid, the tetradecanoic acid and the n-hexadecane are mixed and stirred at the temperature of 130-150 DEG C; the expanded vermiculite and the triethylene glycol monomethyl ether are added, the temperature is decreased to be 80-120 DEG C, and stirring continues to be performed; the cement, the diatomite, the acetyl tributyl citrate, the aliphatic water reducer and the poly-2,6-naphthalene acid ethyl ester fiber are added into the mixture after the temperature is decreased to be 50-60 DEG C, the temperature is increased to be 90-130 DEG C, and a vaccumizing reaction is performed for 20-40 min; after cooling is performed, drying and pressing in a drying oven are performed, and then the phase change latent heat environment-friendly energy-saving type building material can be obtained. The building material is high in heat conductivity coefficient, good in fixation and formation and resistant to fire, meanwhile energy consumption is saved, and the comfort is improved.

Description

technical field [0001] The invention belongs to the field of building materials, and relates to a phase change latent heat environment-friendly and energy-saving building material and a preparation method thereof. Background technique [0002] With the acceleration of domestic urbanization and the extremely hot real estate market, the use of building materials has also reached a new peak. The resulting substantial increase in building heating and cooling will lead to serious energy and environmental crises in the long run. Therefore, building energy-saving technologies have received extensive attention and attention. Phase change material (Phase Change Material, PCM) is a very active field of research and development in energy utilization and material science at home and abroad in recent years. Phase change materials can absorb heat (cold) from the environment or release heat (cold) to the environment during the phase change process, so as to achieve the purpose of energy ...

AI Technical Summary

Problems solved by technology

Inorganic materials have large heat of fusion, high thermal conductivity, small phase change volume, and low price. The disadvantages are: large degree of supercooling, easy to produce phase separation and adverse effects such as aging and deterioration; organic materials have good solid formation and are not easy to phase Separation and supercooling phenomenon, less corrosion, stable performance, but small thermal conductivity, low density, volatile, flammable, and large volume change during phase change, etc.