Transparent flexible cellulosic material-based solid-solid phase-change membrane
A cellulose-based, cellulose technology, applied in the field of cellulose material-based solid-solid phase change film and its preparation, cellulose-based solid-solid phase change material and its preparation, can solve the problem that phase change materials are difficult to form and process, Poor transparency, difficult to cut and other problems, to achieve the effect of outstanding energy storage performance, simple process, and excellent mechanical properties
Inactive Publication Date: 2016-04-27
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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Problems solved by technology
[0004] With the miniaturization, intelligence and functionalization of communication equipment, aviation devices and optoelectronic devices, there is an urgent need to solve the problems of phase change materials, such as difficulty in forming and processing, poor transparency, poor flexibility, and difficult cutting.
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[0030] The present invention will be further described below in conjunction with specific embodiments. The described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.
[0031] Listed in table 1 is the preparation formula embodiment of transparent flexible cellulose material base solid-solid phase change film, and table 2 is the performance index of the transparent flexible cellulose material base solid-solid phase change film corresponding to Table 1 , wherein Example 1 is a film prepared without adding cellulose-based nanofibers.
[0032] The preparation formula embodiment of the transparent flexible cellulose mater...
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Abstract
The invention discloses a transparent flexible cellulosic material-based solid-solid phase-change membrane and a preparation method thereof. The objective of the invention is to provide the transparent flexible cellulosic material-based solid-solid phase-change membrane with the advantages of simple preparation process, good film forming ability, high light transmittance, excellent mechanical properties, easiness in cutting, softness, foldability, outstanding energy storage performance, friendliness to production environment and high industrialization production capacity, and the preparation method thereof. The phase-change membrane comprises hydroxyalkyl non-ionic cellulose ether, polyethylene glycol and cellulose-based nanofiber. The above-mentioned components are dissolved in deionized water and then membrane casting is carried out so as to obtain the transparent flexible cellulosic material-based solid-solid phase-change membrane. The phase-change membrane prepared in the invention has greatly improved mechanical properties compared with the prior art and has the advantages of high light transmittance, outstanding energy storage performance, friendliness to production environment, high industrialization production capacity and wide application prospect.
Description
technical field [0001] The invention relates to a cellulose-based solid-solid phase change material in the field of energy storage materials and a preparation method thereof, in particular to a transparent and flexible cellulose material-based solid-solid phase change film and a preparation method thereof. Background technique [0002] Phase change materials (PhaseChangeMaterials, referred to as PCMs) are substances that have thermal energy storage and temperature regulation through endothermic and exothermic effects during the phase change process. Since this type of material has the characteristics of approximately constant temperature during the phase transition process, and the system temperature can be controlled, it has been widely used in alleviating the energy crisis and improving energy utilization. The most commonly used phase change material is polyethylene glycol (PEG), which is due to its high degree of industrialization, low price, simple chemical structure, ea...
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IPC IPC(8): C08J5/18C08L1/28C08L71/08C08L1/02
Inventor 邵自强陈亚亮吕玉霞刘燕华赵明
Owner BEIJING INSTITUTE OF TECHNOLOGYGY