Waterproof phase-change heat storing plaster wallboard formed by reinforcing straw fibers

Abstract

The invention discloses a waterproof type phase-change heat storing plaster wallboard formed by reinforcing straw fibers. The plaster wallboard is compounded from the following raw materials in percentage by weight: 20-60% of plaster gelate materials, 10-25% of phase-change heat storing microcapsules, 1-7% of a composite water repellent, 25-55% of mineral micro powder, 0.1-0.6% of straw fibers, 0.8-1.5% of a binder, 1-5% of an exciting agent and 0.2-1.5% of a water reducing agent. The preparation method comprises the following steps of: 1) firstly, adding the plaster gelate materials, the mineral micro powder, the straw fibers and the exciting agent into a reaction kettle, adding water, and uniformly stirring the plaster gelate materials, the mineral micro powder, the straw fibers, the exciting agent and the water so as to obtain a material A; 2) sequentially adding the phase-change heat storing microcapsules, the composite water repellent, the binder and the water reducing agent into the reaction kettle, and stirring the material A, the phase-change heat storing microcapsules, the composite water repellent, the binder and the water reducing agent once again so as to obtain a material B; and 3) directly pouring the material B in the reaction kettle into a mold through a grouting pump so as to obtain the phase-change heat storing plaster wallboard, wherein a fiber cement board is arranged on the inner surface of the mold. The waterproof type phase-change heat storing plaster wallboard disclosed by the invention has the advantages of being suitable for operation under humid environment, simple in production technology and environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a water-resistant straw fiber-reinforced phase-change heat storage gypsum wallboard. Background technique [0002] With the improvement of human living standards, the enhancement of environmental awareness, and the approaching of energy crisis, building energy conservation has been paid more and more attention by people. Modern buildings are developing towards high-rise buildings, and lightweight materials (lightweight gypsum boards, lightweight cement composite boards, etc.) The thermal environment is uncomfortable, and the air-conditioning load increases, and the energy consumption of the building rises. By adding phase change heat storage materials to light wall materials (gypsum wallboard), a lightweight building material with high heat capacity can be made to increase the thermal inertia of the house, reduce indoor ambient temperature fluctuations, an...

AI Technical Summary

Problems solved by technology

However, in order to add phase change heat storage materials to gypsum lightweight wallboards, the two major problems of poor water resistance and poor flexural resistance of gypsum lightweight wallboards must be solved. tough material

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