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Cold-storage agent and preparation method thereof

A cold storage agent, 2%-20% technology, applied in the field of cold storage agent and its preparation, can solve the problems of short cold storage time, single application field, fast cold storage speed, etc., to reduce the cost of transportation and storage, wide source of raw materials, The effect of simple preparation method

Active Publication Date: 2012-05-09
SUZHOU ANTEK INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Cold storage technology is currently widely used, and the types of cold storage agents are constantly being updated. Some of them add poly N-vinylacetamide and sodium borate to sodium chloride aqueous solution to make cold storage agents; there is also a cold storage agent, which is Polyvinyl alcohol and borax, which are fully swollen in water, cross-link to form a body structure, and then absorb a large amount of water to swell into a translucent and easy-flowing gel. In the existing cold storage agent technology, a large amount of ammonium nitrate, ammonium chloride, and sodium chloride are used. , Calcium chloride, urea, sodium carbonate, sodium sulfate, sodium nitrate and other raw materials are added with water as the cold storage agent. The advantage is that the cold storage speed is fast, but the disadvantage is that there is ice formation, the cold storage effect is not ideal, and the cold storage time is relatively short. , a single application field
Although the present invention basically solves the phenomenon of deicing ice, the cold storage effect and cold storage cycle are not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The weight percentage ratio of each composition:

[0036] Polyacrylate 5%,

[0037] Edible fat 8%,

[0038] Vinyl Acetate Copolymer 3%,

[0039] Starch 6%,

[0040] Sodium Nitrite 10%,

[0041] Water 66%.

[0042] Preparation method: Accurately weigh polyacrylate, edible oil, vinyl acetate copolymer, starch, sodium nitrite and water in proportion, add it to a mixer, heat to 32°C, stir for 2 hours, make it evenly mixed, and cool at 20°C , become jelly, packed in plastic bag or plastic box.

[0043] Put the cold storage agent in the cold storage at -18°C and complete the freezing in 12 hours. The temperature at the end of the freezing is about -5°C. The cold storage capacity in this process is about 230KJ / kg. Take it out of the cold storage and put it in an environment of 30°C. After about ten hours, let it cool down, and the form is a liquid gel with a temperature of about 5°C.

Embodiment 2

[0045] The weight percentage ratio of each composition:

[0046] Polyacrylate 15%,

[0047] Edible fat 12%,

[0048] Vinyl Acetate Copolymer 17%,

[0049] Starch 20%,

[0050] Sodium Nitrite 16%,

[0051] Water 20%.

[0052] Accurately weigh polyacrylate, edible oil, vinyl acetate copolymer, starch, sodium nitrite and water in proportion, add them to the mixer, heat to 36°C, stir for 1.5h, make it mix evenly, cool at 22°C, and become Jelly-like, packed in plastic bags or boxes.

[0053] Put the cold storage agent in the cold storage at -18°C, and freeze in about 12 hours. The temperature at the end of the freezing is about -5°C. The cold storage capacity in this process is about 240KJ / kg. Take it out of the cold storage and put it in an environment of 30°C. After about 10 hours, let it cool down, the form is liquid gel, and the temperature is about 5°C.

Embodiment 3

[0055] The weight percentage ratio of each composition:

[0056] Polyacrylate 12%,

[0057] Edible oil 11%,

[0058] Vinyl Acetate Copolymer 16%,

[0059] Starch 18%,

[0060] Sodium Nitrite 15%,

[0061] Water 28%.

[0062] Accurately weigh polyacrylate, edible oil, vinyl acetate copolymer, starch, sodium nitrite and water in proportion, add to the mixer, heat to 40°C, stir for 1 hour, make it mix evenly, cool at 24°C, and become gelatin Frozen, packed in plastic bags or boxes.

[0063]Put the cold storage agent in the cold storage at -18°C, and freeze in about 12 hours. At the end of the freezing, the temperature is about -5°C. The cold storage capacity in this process is about 250KJ / kg. Take it out of the cold storage and put it in an environment of 30°C. After about 10 hours, let it cool down, the form is liquid gel, and the temperature is about 5°C.

[0064] When in use, put the cold storage agent in the refrigerator or cold storage to freeze and store cold storage...

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Abstract

The invention discloses a cold-storage agent and a preparation method thereof. The cold-storage agent comprises the following components by weight percent: 2%-20% of polyacrylate, 2%-20% of edible oil, 2%-20% of vinyl acetate copolymer, 2%-20% of starch, 2%-16% of sodium nitrite and the balance of water. The preparation method comprises the following steps: firstly, correctly weighing polyacrylate, edible oil, vinyl acetate copolymer, starch, sodium nitrite and water according to the proportion and then adding into a mixer; heating to 32-40 DEG C, stirring for 1-2 hours for evenly mixing the former components, cooling to 20-24 DEG C, so that the mixture is of a jelly shape; and packaging with a plastic bag or plastic box. The cold-storage agent has good cold-storage effect, large cold-storage amount and long cold-storage period as well as energy conservation and emission reduction; and the preparation method is simple, has wide raw material source and low cost, is safe and reliable, and can be repeatedly used.

Description

technical field [0001] The invention relates to the technical field of cold storage, in particular to a cold storage agent and a preparation method thereof. Background technique [0002] Since the global oil crisis in the 20th century, energy and energy conservation issues have attracted widespread attention. The research on the application of phase change energy storage materials at home and abroad is mainly concentrated in the fields of central air conditioning, heating, passive solar energy, and waste heat and cold utilization. The cold storage agent is derived from the concept of phase change energy storage. The research and application of phase change cold storage materials are relatively few, mainly focusing on the application fields of air-conditioning refrigeration and cold chain transportation such as food and medicine vaccines. [0003] The main problem in the field of cold chain transportation such as food, medicine and vaccines is the broken chain of the cold cha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
CPCY02E60/147Y02E60/14
Inventor 包伟强
Owner SUZHOU ANTEK INDAL
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