A dual-temperature phase-change temperature-regulating expanded vermiculite board and its preparation method

Abstract

The invention discloses a dual-temperature phase change temperature-regulating expanded vermiculite board and a preparation method thereof. The raw materials of the plate include diatomite phase change composite material, expanded vermiculite composite phase change material, portland cement and water reducer. The phase change temperature of the diatomite phase change composite material is 5-15°C, and the latent heat of phase change is ≥30J / g; the phase change temperature of the expanded vermiculite composite phase change material is 25-40°C, and the latent heat of phase change is ≥80J / g. Stir the diatomite phase change composite material, expanded vermiculite composite phase change material, portland cement, water reducer and water according to the mass ratio of 10~30:20~40:30~60:0.2~0.6:20~40 After uniform pouring, it can be demoulded after 2 days of curing. The plate prepared by the invention fully utilizes the micropore adsorption effect of expanded vermiculite and diatomite on phase change materials, and realizes the structural and functional integration of building materials while ensuring the temperature adjustment efficiency; in addition, the plate can be poured on site It works in both winter and summer, and has a wider range of applications than other boards.

Description

technical field

[0001] The invention relates to the technical field of phase-change energy storage materials, in particular to a dual-temperature phase-change temperature-regulating expanded vermiculite board and a manufacturing method thereof. Background technique

[0002] The increasing shortage of energy makes improving energy efficiency and developing and utilizing renewable energy a worldwide problem to be solved. With the rapid development of the construction industry and the improvement of people's quality of life, building energy consumption has accounted for about one-third of the total energy consumption of the whole society, and it is showing a trend of continuous increase. In the next few decades or even longer-term social and economic development, the rapid development of the construction industry and urbanization will continue. According to the statistics of the Ministry of Construction, around 2030, my country's building energy consumption will account for 30%...

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