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Coolant with good cold storage effect and long freezing time and preparation method thereof

A cold storage agent and anti-overcooling agent technology, applied in the field of materials, can solve the problems of long freezing time and reduced cold preservation effect, and achieve the effects of long maintenance time, long cold preservation effect and reduced transportation costs

Inactive Publication Date: 2014-04-16
SUZHOU ANTEK INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These cold storage agents have the disadvantages of long freezing time and short-term decline in cold preservation effect.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A cold storage agent, prepared by the following method:

[0031] (1) Weigh by weight: 5 parts of gel, 2 parts of polyvinyl alcohol, 0.5 parts of borax, 5 parts of potassium sorbate, 5 parts of sol, 5 parts of anti-supercooling agent, and 10 parts of solvent;

[0032] (2) Add the solvent to the reaction kettle and heat to 40°C while stirring;

[0033] (3) Add polyvinyl alcohol and borax into the reaction kettle, continue to stir and heat, the heating temperature is 65°C; the stirring time is 30min, then add the gel, stir evenly and then cool to prepare the cool storage agent.

[0034] Wherein, the gel is an aqueous solution of sodium carboxymethyl cellulose, which is prepared by adding 0.03-0.3% ethylene glycol diacrylate cross-linking agent to the total mass of the polymer, and standing for 1-2 minutes. The solvent is composed of glycerol, ethanol and water, wherein the weight ratio of glycerol, ethanol and water is 1:5:10.

Embodiment 2

[0036] A cold storage agent, prepared by the following method:

[0037] (1) Weigh by weight: 20 parts of gel, 12 parts of polyvinyl alcohol, 8 parts of borax, 10 parts of potassium sorbate, 10 parts of sol, 10 parts of anti-supercooling agent, and 30 parts of solvent;

[0038] (2) Add the solvent to the reaction kettle and heat to 55°C while stirring;

[0039] (3) Add polyvinyl alcohol and borax into the reaction kettle, continue to stir and heat, the heating temperature is 70°C; the stirring time is 40min, then add the gel, stir evenly and then cool to prepare the cool storage agent.

[0040] Wherein, the gel is an aqueous solution of hydroxymethyl cellulose, which is prepared by adding 0.03-0.3% ethylene glycol diacrylate cross-linking agent to the total mass of the polymer, and standing for 1-2 minutes. The solvent is composed of glycerol, ethanol and water, wherein the weight ratio of glycerol, ethanol and water is 1:5:10.

Embodiment 3

[0042] A cold storage agent, prepared by the following method:

[0043] (1) Weigh by weight: 12 parts of gel, 8 parts of polyvinyl alcohol, 5 parts of borax, 5 parts of agar, 5 parts of potassium sorbate, 5 parts of anti-supercooling agent, and 20 parts of solvent;

[0044] (2) Add the solvent into the reaction kettle and heat to 60°C while stirring;

[0045] (3) Add polyvinyl alcohol and borax into the reaction kettle, continue to stir and heat, the heating temperature is 80°C; the stirring time is 50min, then add gel, stir evenly and then cool to prepare the cool storage agent.

[0046] Wherein, the gel is prepared by adding 0.03-0.3% ethylene glycol diacrylate cross-linking agent in an amount of 0.03-0.3% of the total mass of the high-molecular polymer, and standing for 1-2 minutes. The solvent is composed of glycerol, ethanol and water, wherein the weight ratio of glycerol, ethanol and water is 1:5:10.

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PUM

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Abstract

The invention relates to a coolant with a good cold storage effect and long freezing time and a preparation method thereof. The coolant is prepared through the following steps: (1) weighing and taking the following materials in parts by weight: 5-20 parts of gel, 2-12 parts of polyvinyl alcohol, 0.5-8 parts of borax, 5-10 parts of an anti-cold agent, 5-10 parts of potassium sorbate and 10-30 parts of a solvent; (2) adding the solvent into a reaction kettle, stirring and heating; (3) adding the polyvinyl alcohol into the reaction kettle, continuously stirring and heating, then adding the gel, potassium sorbate and anti-cold agent and obtaining the coolant after evenly stirring and cooling. The coolant provided by the invention has the advantages of good cold storage effect, rapid cold storage speed, extensive sources of raw materials, zero contamination, and no toxic or side effects.

Description

technical field [0001] The invention belongs to the field of materials, and relates to a cold storage agent with good cold storage effect and long freezing time and a preparation method thereof. Background technique [0002] The main problem in the field of cold chain transportation such as food and medicine is the broken chain of the cold chain link. The cold storage agent is used to maintain the low temperature state of food, medicine and other products and directly transport them to solve the fluctuation of food and medicine storage and transportation temperature. Realize the continuity of storage temperature, achieve the purpose of controlling product quality and increasing added value. Usually it is frozen in the freezer for a minimum of 5 hours and a maximum of 8 hours, and the cold preservation effect does not decrease during long-distance transportation and long-term storage. Chinese patent CN1362462A discloses a cold storage agent, which includes an aqueous solutio...

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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