Phase-change energy storage perforated plate and preparation method

Abstract

The invention discloses a phase-change energy storage perforated plate and a preparation method. The phase-change energy storage perforated plate consists of a phase-change unit, a core plate and a surface plate, wherein the phase-change unit is made of a ternary fatty acid eutectic mixture/expanded graphite composite phase-change energy-storage material; the core plate is of an aluminum perforated structure; the surface plate is a medium-density fiber plate or a real-wood single plate; pores of the perforated plate are filled with the phase-change unit; an epoxy resin is adopted as an adhesive; and the perforated plate is prepared in a cold pressing mode. Due to adoption of a ternary fatty acid eutectic mixture, the defects that a single organic phase-change material is low in heat conductivity, low in latent heat, improper in phase-change temperature, easy to leak off and the like, are overcome; by adopting the phase-change energy storage perforated plate prepared by using the method, key problems that a conventional phase-change energy storage material generally has seepage, is low in utilization rate, low in durability, and the like, can be solved; the heat storage time of thecomposite material is shortened by 58.3% and the heat release time is shortened by 56.1% when being compared with those of the ternary fatty acid eutectic mixture; and the phase-change energy storageperforated plate is stable in mechanical property, the static bending intensity of the perforated plate is 11.6-13.8 MPa, the elastic modus of the perforated plate is 2.3-2.6 MPa, the internal bondingstrength of the perforated plate is 0.32-0.43 MPa, and the heat release time of the phase-change energy storage perforated plate is prolonged by 70-85% when being compared with that of a common perforated plate.

Description

technical field [0001] The invention relates to a preparation method of a phase change energy storage composite board, in particular to a preparation method of a building energy-saving composite honeycomb board equipped with a phase change energy storage material. Background technique [0002] With the development of society, energy and environmental problems are becoming more and more serious, and single-function building structures and decorative materials can no longer meet the requirements of building energy conservation. Although multi-layer structure walls and multi-layer structure decoration materials achieve the effect of heat preservation and heat insulation by adding thermal insulation materials, general decoration materials have small heat capacity and low heat storage capacity, which cannot delay room temperature changes and excellent heat preservation effects. The development of building energy-saving and thermal insulation composite materials with high heat sto...

AI Technical Summary

Problems solved by technology

The polybasic fatty acid eutectic overcomes the shortcomings of a single fatty acid as a phase change heat storage material, and is cheap and easy to obtain. At present, there are few studies on the structure of polybasic fatty acid eutectic phase change energy storage honeycomb panels