Mixed fiber composite phase change temperature control material and preparation method thereof

Abstract

The invention provides a mixed fiber composite phase change temperature control material and a preparation method thereof. The material comprises the following raw materials in percentage by mass: 20-40% of plant fiber pulp, 6-10% of inorganic fibers, 30-50% of a phase change energy storage agent, 2-15% of a phase change temperature regulator, 1-10% of a nucleating agent, 2-8% of a thickening stabilizer and 0.5-5% of a preservative. The plant fiber pulp and the inorganic fibers are used for constructing a fiber network, the use of the inorganic fibers is reduced while the supercooling of the phase change agent is reduced and the cycle performance of the temperature control material is improved, the production cost of the material is reduced, and fibers in agricultural and forestry wastes and waste paper are effectively utilized. Besides, the production process is simple, the temperature control effect is good, the material can be widely applied to the fields of building energy conservation and electronic equipment temperature control, and great economic benefits and social benefits are achieved.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a mixed fiber composite phase change temperature control material and a preparation method thereof. Background technique [0002] Energy is the material basis of human activities. The production and life of modern society cannot be separated from energy for a moment. However, human's unrestrained consumption of natural energy has also led to serious energy shortages and environmental pollution problems. Due to the strong temporal and spatial characteristics of energy supply and demand, there is an inconsistency between energy supply and energy consumption in many energy utilization systems such as building and electronic equipment insulation and cold storage, resulting in energy Unreasonable use and a lot of waste. Therefore, people are eager to find a suitable way to improve the efficiency of energy use, thereby reducing the use of energy. [0003] Phase change materials ha...

AI Technical Summary

Problems solved by technology

However, the actual effect of simply using a thickener is too dependent on thickener concentration, system pH and other conditions, and must be precisely regulated, otherwise it will affect the repeated use of crystalline hydrated salt phase change materials

Patent applications with application numbers: CN106987234A, CN103865494A, etc. proposed the use of microcapsule technology to solve the phase separation and leakage problems of phase change materials, but this method is mostly aimed at organic solid-liquid phase change materials, and its cost is relatively high

[0004] Therefore, at present, there is no good solution to the supercooling and phase separation problems of crystalline hydrated salt inorganic phase change materials. How to improve the service life of this phase change material in an economical and reasonable way has become a challenge for researchers.

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