Paraffin wax phase change energy storage material and preparation method thereof

Abstract

The invention provides a paraffin wax phase change energy storage material and a preparation method thereof. The paraffin wax phase change energy storage material comprises 48 to 56.7 percent of paraffin wax, 14.2 to 32 percent of high-density polyethylene, 4 to 5.7 percent of sodium dodecyl benzene sulfonate serving as a surfactant, 10.4 to 15.6 percent of sodium alginate serving as a film forming material and 5.6 to 7.8 percent of anhydrous calcium chloride serving as a crosslinking agent. The method for preparing paraffin wax phase change energy storage material comprises the following steps: preparing a microcapsule phase change material by using paraffin wax as a core material and high-density polyethylene as supporting material and by using a melting method; and preparing millimetercapsule phase change material by using a thin film coating technique. In the invention, the technical problems of low paraffin wax mixing amount, low storage performance, leakage, low stability and the like of the conventional microcapsule phase change material are solved.

Description

technical field [0001] The invention belongs to the technical field of phase-change energy storage materials, and in particular relates to a paraffin phase-change energy storage material and a preparation method thereof. Background technique [0002] Most of the existing building materials are constant materials, and their heat capacity is far below the heat capacity required by the ideal energy-saving building envelope, resulting in large indoor temperature fluctuations and low thermal comfort. Combine phase change materials with concrete to make phase change energy storage concrete, use it as exterior wall material, and use the characteristics of energy absorption and energy release of phase change materials in the process of phase change to realize energy utilization and conversion, which is beneficial to The regulation of the indoor temperature of the building can greatly increase the heat storage effect of the enclosure structure, weaken the fluctuation range of the hea...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a millimeter-scale capsule phase-change energy storage material and a preparation method thereof, which solves the problems of low paraffin incorporation, poor energy storage performance, easy leakage, and poor stability in existing microcapsule phase-change materials. technical problem