Preparation method of thermochromic phase-change and energy-storage wood taking delignification wood as raw material

Abstract

The invention discloses a preparation method of thermochromic phase-change and energy-storage wood taking delignification wood as a raw material. The preparation method comprises the following process steps: (1) adding wood blocks into a mixed solution of sodium hydroxide and sodium sulfite, heating up to a boiling state, keeping the boiling state for a certain time, and then washing the wood blocks with deionized water to obtain the delignification wood; (2) adding the delignification wood into a hydrogen peroxide solution for bleaching, and heating up to a boiling state until the wood becomes white; (3) adding crystal violet lactone and bisphenol A into molten tetradecanol, and carrying out magnetic stirring under the heating condition to obtain a compound; and (4) putting the delignification wood into the compound for dipping, and then putting the delignification wood subjected to dipping into a vacuum drying oven for a certain time to obtain the thermochromic phase-change energy-storage wood. The preparation method has the advantages that the raw material not only retains the original three-dimensional porous structure of the raw wood, but also has a larger adsorption rate than the raw wood, and the prepared thermochromic phase-change energy-storage material is low in cost, simple in method, short in production period, environmentally friendly and thermochromic.

Description

technical field [0001] The invention relates to a preparation method of a heat-sensitive color-changing phase-change energy storage material using delignified wood, myristyl alcohol, crystal violet lactone and bisphenol A as raw materials, and belongs to the field of using delignified wood as a supporting material. Phase change energy storage new material research field. Background technique [0002] Energy is the material basis for social development and progress, and plays a key role in promoting social and economic development and industrial production. However, with the growth of population and the development of industry, non-renewable energy sources are constantly decreasing, supply and demand are out of balance, and the energy crisis is intensifying. Faced with this situation, people began to focus on the development of some renewable new energy sources. Phase change energy storage materials have emerged at the historic moment because of their good heat storage capa...

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Problems solved by technology

[0004] The present invention proposes a method for preparing heat-sensitive color-changing phase-change energy-storage wood using delignified wood as a raw material. The shortcoming of being low and the problem that the phase transition temperature and phase transition process cannot be judged intuitively; the obtained heat-sensitive color-changing phase-change energy storage wood will change color during the phase transition process, from blue to blue at room temperature. The color becomes colorless, not only can intuitively judge the phase change temperature and the occurrence of the phase change process, but also can play a decorative effect

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