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A preparation method and application method of hydrogel for intelligent temperature control

A technology of intelligent temperature control and application method, applied in the field of polymer technical materials, can solve the problems of inability to adapt to rapid changes in the environment, and achieve the effect of good recycling performance, excellent heat dissipation performance, and rapid heat dissipation

Inactive Publication Date: 2016-03-02
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of these materials is that they cannot adapt to rapid changes in the environment

Method used

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  • A preparation method and application method of hydrogel for intelligent temperature control
  • A preparation method and application method of hydrogel for intelligent temperature control
  • A preparation method and application method of hydrogel for intelligent temperature control

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preparation example Construction

[0024] A method for preparing a hydrogel for intelligent temperature control of the present invention, the preparation method comprises the following process: adding N-isopropylacrylamide monomer, cross-linking agent, and distilled water into a beaker, ultrasonicating for 5 minutes, so as to dissolve Completely, add the initiator and initiator catalyst, pour it into the mold quickly after 5 minutes of ultrasonication, control the temperature at a constant temperature of 15°C~25°C, and react for 2 to 5 hours to form a cross-linked water gel. The mass ratio of crosslinking agent to N-isopropylacrylamide is 1:20-50. The mass ratio of initiator to N-isopropylacrylamide is 1:50-100. The mass ratio of initiator catalyst to initiator is 1:1-2. The mass ratio of distilled water to N-isopropylacrylamide is 3-4:1.

[0025] As a preferred method, the crosslinking agent is N,N-methylenebisacrylamide. The initiator is persulfate or benzoyl peroxide. The initiator catalyst is N,N,N',N'...

Embodiment 1

[0045] Weigh 5.0g of NIPAM, 0.1g of N,N-methylenebisacrylamide, 20ml of distilled water, add to a beaker to dissolve completely, add 0.0625g of ammonium persulfate to dissolve completely, add N,N,N',N'-tetramethyl Diethylamine 0.03125g, the solution was added to the mold within 30 seconds to react for four hours, after the reaction was completed, rinsed with distilled water three times, and phase-transformed three times at 25°C and 40°C to form a hydrogel.

[0046] Light transmission performance test of hydrogel. Test process: Place the blue plastic needle under the prepared arc-shaped smart hydrogel to observe the light transmittance of the hydrogel; heat the hydrogel at 40°C, and place the blue needle under the hydrogel after ten minutes to observe Hydrogel light transmission. Test results such as figure 2 shown. figure 2 The middle ordinate represents temperature, and the abscissa represents time. The test result is figure 2 The line represented by D in . From fi...

Embodiment 2

[0051] Weigh 5.0g of NIPAM, 0.15g of N,N-methylenebisacrylamide, 17.5ml of distilled water, add to a beaker to dissolve completely, add 0.0625g of ammonium persulfate to dissolve completely, add N,N,N',N'- Add 0.03125 g of methyldiethylamine into the mold within 30 seconds, and react for three hours. After the reaction, rinse with distilled water three times, and undergo three phase transitions at 25°C and 40°C to form a hydrogel.

[0052] The light transmission performance and water content of the hydrogel were tested. The measurement method is as shown in Example 1. The measurement results are shown in Table 1. The hydrogel of this example appears to be light-transmissive and recyclable greater than one hundred times.

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Abstract

The invention discloses a preparation method of hydrogel for intelligent temperature control, comprising the following process: dissolving N-isopropylacrylamide in distilled water, then adding a crosslinking agent and an initiator, and the crosslinking agent and initiator After the agent is dissolved, an initiator catalyst is added to react at a constant temperature of 15°C to 25°C to obtain a hydrogel. The preparation method is simple, and the prepared hydrogel has good heat dissipation and recyclability, and can realize temperature control of temperature-controlled objects in an environment-friendly, energy-saving and recyclable manner. At the same time, the application method of the hydrogel is also disclosed. The hydrogel is placed on the surface of the object to be temperature-controlled, and the hydrogel regulates the temperature of the object to be temperature-controlled.

Description

technical field [0001] The invention relates to the field of polymer technical materials, in particular to a preparation method and an application method of a hydrogel for intelligent temperature control. Background technique [0002] Polymer hydrogel materials are a kind of cross-linked materials that can quickly absorb water but are insoluble in water. They have the characteristics of polymer electrolytes and are a kind of functional polymer materials that can integrate water absorption, water retention and slow release into one. The special properties of polymer materials have attracted more and more research and attention, and their applications have penetrated into various fields such as drug sustained release, cooling and temperature control, desert control, energy conservation and environmental protection. There are many types of polymer hydrogel materials, among which smart materials occupy an important position. The so-called smart material is a material that can s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/54C08F222/38
Inventor 姜勇朱明露田艳芝
Owner SOUTHEAST UNIV
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