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Phase-change constant-temperature material and pad body
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A phase change constant temperature and pad body technology is applied in the field of phase change constant temperature materials and pad bodies including phase change constant temperature materials, which can solve the problems of large subcooling and easy phase separation.
Active Publication Date: 2011-08-24
JIANGSU YISHUN MEDICAL DEVICES CO LTD
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At the same time, inorganic hydrated salts have the disadvantages of large undercooling and easy phase separation, which limit their use.
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Embodiment 1
[0028] It contains 78% of Glauber's salt, 16% of water, 4% of nucleating agent, 1% of dispersant and 1% of thickener. The preparation method is as follows:
[0029] (1) Add water, thickener, nucleating agent, and dispersant into a clean plastic bucket, and stir evenly. At this time, the mixture becomes uniform and viscous.
[0030] (2) Grind and sieve Glauber's salt to make it into a uniform fine sand, add it to the above mixture, and stir evenly to disperse the components evenly.
[0033] It contains 75% of Glauber's salt, 20% of water, 3% of nucleating agent, 1% of dispersant and 1% of thickener. The preparation method is as follows:
[0034] (1) Add water, thickener, nucleating agent, and dispersant into a clean plastic bucket, and stir evenly. At this time, the mixture becomes uniform and viscous.
[0035] (2) Grind and sieve Glauber's salt to make it into a uniform fine sand, add it to the above mixture, and stir evenly to disperse the components evenly.
[0036] The latent heat of phase change of the phase change material prepared by this method is 218KJ / KG, and the phase change temperature is 28°C.
[0037] The phase change material made according to the above method is poured into the pad body, and the making method is as follows:
[0038] (1) Material preparation: select and cut the mat material according to the dimensions and material requirements of the mat;
[0039] (2) Bag making: A bag is formed by pressing two pieces of cloth or silk com...
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Abstract
The invention relates to a phase-change material, in particular relating to a phase-change constant-temperature material. The invention also relates to a pad body, in particular relating to a pad body containing the phase-change constant-temperature material. The phase-change material can ensure constant temperature within a certain period of time, is large in latent heat and stable in property, and can be repeatedly used. The phase-change material is fine and smooth like sand as compared with the original phase-change material. The phase-change material is prepared through the following steps: evenly mixing 16wt%-20wt% of water, 1wt% of thickener, 3wt%-4wt% of nucleating agent and 1wt% of dispersing agent, so that the mixture is of a uniform thickness shape; adding 75wt%-78wt% of mirabilite; and evenly mixing so that the components are evenly dispersed. The phase-change material can be added in the pad body to serve as a cold-hot bag, and insulation is durable. The pad body containing the phase-change material consists of small grids which are of strip shapes, the grids are tightly distributed, and a pouring material port is reserved on each grid and used for pouring the phase-change material.
Description
technical field [0001] The invention relates to a phase change material, in particular to a phase change constant temperature material. [0002] The present invention also relates to a pad body, in particular to a pad body containing a phase change constant temperature material. Background technique [0003] Phase change material (PCM-Phase Change Material) refers to a substance that changes shape with temperature and can provide latent heat. The process of a phase change material changing from solid to liquid or from liquid to solid is called a phase change process. At this time, the phase change material will absorb or release a large amount of latent heat. Phase change materials can actually act as energy storage. This feature is of great significance in the fields of energy saving and temperature control. [0004] The existing phase-change low-temperature energy storage materials mainly use Na 2 SO 4 10H 2 O is the main raw material, and its energy storage calorifi...
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