Preparation method of high molecular material coolant

A technology of polymer materials and cold storage agents, which is applied in the direction of heat exchange materials, chemical instruments and methods, can solve the problems of long cold storage time, fast water absorption rate, complicated process, etc. The effect of fast and simplified process

Inactive Publication Date: 2013-05-22
ANHUI PROVINCE COAL SCI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the defects of complex process and high cost in the preparation of the above-mentioned existing polymer material cool storage agent, the purpose of the present invention is to prepare polyacrylate polymer cool storage agent with the simplest method and the most readily available raw materials, and the prepared The cold storage agent is non-toxic, odorless, non-polluting and non-corrosive, and has high water absorption rate, fast water absorption rate, long cold storage time and low cost, which is conducive to large-scale industrial production

Method used

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  • Preparation method of high molecular material coolant
  • Preparation method of high molecular material coolant

Examples

Experimental program
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Effect test

Embodiment 1

[0024] 1) Put a beaker containing 36 grams of acrylic acid into ice water (it only needs to have ice cubes floating on the surface of the water), and add 20% sodium hydroxide solution to 36 grams of acrylic acid drop by drop, so that the neutralization degree is 80 % sodium acrylate solution, and stirred to allow it to cool to room temperature;

[0025] 2) Take 0.0252 grams of N-N'methylene bisacrylamide crosslinking agent and 0.054 grams of potassium persulfate initiator and add it to 10 grams of tap water, stir well to dissolve it completely, and then add it to acrylic acid with a neutralization degree of 80%. In the sodium solution, fully stir and mix evenly to obtain a mixed solution;

[0026] 3) Add 18 grams of tap water to the mixed solution, and adjust the mass percentage concentration of acrylic acid monomer in the mixed solution to 25%;

[0027] 4) Put the mixed solution of acrylic acid monomer mass percentage 25% into an oven at a temperature of 90°C, react for 4 ho...

Embodiment 2

[0037] 1) Put a beaker containing 36 grams of acrylic acid into ice water (it only needs to have ice cubes floating on the surface of the water), add 20% sodium hydroxide solution to 36 grams of acrylic acid drop by drop, and configure the neutralization degree to be 75 % sodium acrylate solution, and stirred to allow it to cool to room temperature;

[0038] 2) Take 0.0432 grams of N-N'methylene bisacrylamide crosslinking agent and 0.054 grams of potassium persulfate initiator and add it to 10 grams of tap water, stir well to dissolve it completely, and then add it to sodium acrylate with a neutralization degree of 75%. solution, fully stirred and mixed evenly to obtain a mixed solution;

[0039] 3) Add 23 grams of water into the mixed solution, and adjust the mass percentage concentration of acrylic acid monomer in the mixed solution to 25%;

[0040] 4) Put the mixed solution of acrylic acid monomer mass percentage concentration of 25% into an oven at a temperature of 80°C, ...

Embodiment 3

[0048] 1) Put a beaker containing 36 grams of acrylic acid into ice water (it only needs to have ice cubes floating on the surface of the water), and add 20% sodium hydroxide solution to the acrylic acid drop by drop to form a neutralization degree of 70%. Sodium acrylate solution, and let it cool to room temperature with stirring;

[0049]2) Add 0.0432 grams of N-N'methylenebisacrylamide crosslinking agent and 0.054 grams of potassium persulfate initiator to 5 grams of tap water, stir thoroughly to dissolve it completely, and then add it to acrylic acid with a neutralization degree of 70%. In the sodium solution, fully stir and mix evenly to obtain a mixed solution;

[0050] 3) Add 3 grams of tap water into the mixed solution, and adjust the mass percentage concentration of acrylic acid monomer in the mixed solution to 30%;

[0051] 4) Put the mixed solution of acrylic acid monomer with a mass percentage concentration of 30% in an oven at a temperature of 90°C, react for 4 h...

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Abstract

The invention relates to a preparation method of a high molecular material coolant. The method comprises the following steps of: 1) placing a beaker filled with crylic acid in ice water and dropwise adding 20% sodium hydroxide liquor to prepare a sodium acrylate liquor with a certain neutralization degree; 2) adding an N-N' methylene crosslinking agent and a potassium persulfate initiator dissolved in tap water into the sodium acrylate liquor to obtain a mixed liquor; 3) adding tap water to the mixed liquor and adjusting the concentration of acrylic monomer in the mixed liquor to 20-30% in percentage by weight; and 4) placing the mixed liquor obtained in step 3) in an oven at a certain temperature to react, soaking by ethanol, cutting into pieces, drying and smashing to obtain powder coolant. When the coolant is used, the coolant and tap water are mixed according to a mass ratio of 1:1000, and the coolant is adequately swelled to hydrogel to remove moisture on the surface of the gel, packaged in a plastic bag, and frozen at a temperature below 0 DEG C for 12-14 hours to use.

Description

technical field [0001] The invention belongs to the technical field of cold storage, and in particular relates to a preparation method of a polymer material cold storage agent. Background technique [0002] Cold storage materials are the key to cold storage technology. Although ice is a natural cold storage agent bestowed by nature to human beings, although it has many valuable properties, it still cannot meet the increasing requirements of people. With the development of science, people are constantly researching The cool storage agent with new performance, the cool storage agent of polymer material, is to integrate the polymer material with water and some additives, so that it has not only the cold storage performance of ice, but also the physical properties of polymer material. At present, the polymer material cooling agent is widely used, which mainly includes two types: one is a gel made of polymer materials such as polyvinyl alcohol and water additives; the other is a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F222/38C08J3/075C09K5/06
CPCY02E60/147Y02E60/14
Inventor 周孟颖冯立品张奋奋徐晓琦张灿明梁国治
Owner ANHUI PROVINCE COAL SCI RES INST
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