Phase-change gypsum board and preparation method thereof

Abstract

The invention discloses a method for preparing a phase-change gypsum board. The method comprises the following steps: fully mixing calcined gypsum, a binder and a reinforcing agent to form dry powder;mixing a phase-change microcapsule stock solution, a water reducing agent and water to form a phase-change microcapsule solution; mixing a surfactant with water to form a wet material; fully mixing the dry powder, the phase-change microcapsule solution and the wet material to form slurry; and placing the slurry at the middle part of surface protection paper, and carrying out cutting and drying toform the phase-change gypsum board. The phase-change gypsum board comprises, on the basis of 100 parts by weight of the calcined gypsum, 20-80 parts by weight of the phase-change microcapsule stock solution, 0.5-2.5 parts by weight of the binder, 0.05-0.5 part by weight of the reinforcing agent, 0.05-1 part by weight of the water reducing agent, 0.05-1 part by weight of the surfactant, 65-90 parts by weight of the water and 2-10 parts by weight of the surface protection paper. The dosage of the water reducing agent is reduced by changing the adding sequence of the water reducing agent.

Description

technical field [0001] The present application relates to the field of building materials, in particular to a phase-change gypsum board and a preparation method thereof. Background technique [0002] According to a survey by the International Energy Agency, in the past 20 years, primary energy consumption has increased by 49%, and CO2 emissions account for about 43%. Moreover, 30% to 40% of energy consumption is building energy consumption. Thermal energy storage materials are considered to be a way to coordinate energy consumption and energy supply balance. Applying phase change energy storage materials to building materials and rational use can reduce Building energy consumption, therefore, phase change energy storage building materials are research hotspots. Patent CN201410176349.0 pointed out that the building energy-saving heat preservation method and the preparation scheme of hollow blocks, the phase change material is directly mixed with gypsum, and the phase change ...

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Problems solved by technology

However, none of the above patents mentions the influence of phase change materials on the performance of gypsum boards and their energy storage effects.

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