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A thermal energy storage system and its preparation method

A thermal energy storage and phase change material technology, applied in the field of rubber, can solve the problems of reducing the efficiency of phase change material storage and release energy, etc., and achieve the effect of preventing liquid seepage, simple process and strong operability

Active Publication Date: 2020-09-18
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the efficiency of storing and releasing energy of phase change materials has been reduced, which has become one of the main problems restricting this application.

Method used

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  • A thermal energy storage system and its preparation method
  • A thermal energy storage system and its preparation method
  • A thermal energy storage system and its preparation method

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preparation example Construction

[0036] An embodiment of the present invention provides a method for preparing a thermal energy storage system, comprising the following steps:

[0037] Step 1: mixing the rubber with a compounding agent to obtain a compounded rubber, the compounding agent including an acrylate, a vulcanizing agent and an anti-aging agent;

[0038] In the embodiment of the present invention, one or more combinations of the preferred saturated natural rubber, ethylene-propylene rubber, butadiene rubber and styrene-butadiene rubber of the rubber; the preferred dicumyl peroxide and 2, One or two combinations of 5-dimethyl-2,5-bis(tert-butylperoxy)hexane; the anti-aging agent is one of the amine and phenolic anti-aging agents suitable for rubber systems One or more than one combination, the amine antioxidant such as N-phenyl-β-naphthylamine, N-octyl-N'-phenyl-p-phenylenediamine, 2,2,4-trimethyl-1 , 2-dihydroquinoline polymer, 3-hydroxybutyraldehyde-α-naphthylamine, N,N'-di-o-tolylethylenediamine, ...

Embodiment 1

[0061] (1) Weigh 100g of EPDM rubber, 30g of sodium methacrylate, 0.75g of dicumyl peroxide, 5g of fumed silica, 1g of antioxidant D (N-phenyl-β-naphthylamine), organic Foaming agent OT 5g, sodium bicarbonate 3g, stearic acid 3g.

[0062] (2) Plasticize the rubber, then place it at room temperature, add fumed white carbon black, sodium methacrylate, antioxidant D, organic foaming agent OT, sodium bicarbonate, stearic acid and diisophenyl peroxide in sequence according to the formula C, carry out mixing on the open mill, after thin pass several times, take out sheet, obtain mixing film;

[0063] (3) Divide the mixed rubber sheet into two-stage molding vulcanization, the mold clamping pressure is 0.3MPa, the first-stage vulcanization temperature is 110°C, and the vulcanization time is 15 minutes, and then quickly transferred to the second-stage vulcanization, the vulcanization temperature is 170°C, and the vulcanization time is 15 minutes. The sample size is 2cm×2cm×0.2cm. SEM...

Embodiment 2

[0066] (1) Weigh 100 g of EPDM rubber, 30 g of sodium methacrylate, 0.75 g of dicumyl peroxide, and 1 g of antiaging agent D (N-phenyl-β-naphthylamine).

[0067] (2) Plasticize the rubber, then place it at room temperature, add sodium methacrylate, anti-aging agent D and dicumyl peroxide in sequence according to the formula, knead it on an open mill, thin it several times, and then release the sheet. Obtain mixed film;

[0068] (3) The mixed rubber sheet is molded and vulcanized, the clamping pressure is 0.3MPa, the vulcanization temperature is 160°C, and the vulcanization time is 30min. The sample size is 2cm×2cm×0.2cm. The SEM image of the molded vulcanized rubber is attached figure 2 , obviously formed a two-phase structure: rubber phase and sodium methacrylate phase.

[0069] (4) Soak the vulcanized rubber pressed in step (3) in water at 40°C for 7 days until the weight of the rubber does not change; place the vulcanized rubber saturated with water in 50°C n-hexadecane...

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Abstract

The invention discloses a heat storage system and a preparation method thereof and belongs to the field of rubber. The preparation method of the heat storage system comprises: mixing rubber and ingredients to obtain mixed rubber, wherein the ingredients include acrylates, a sulfurizing agent and an antiaging agent; sulfurizing the mixed rubber to obtain water-swellable rubber; soaking the water-swellable rubber in a first phase change substance in liquid form to obtain rubber with the absorbed first phase change substance; soaking the rubber with the absorbed first phase change substance in asecond phase change substance in liquid form to obtain the heat storage system, wherein one of the first phase change substance and the second phase change substance is water or aqueous solution, while the other is oil or oily solution. The heat storage system provided by an embodiment of the invention has the advantages that heat produced by water and oil phase change process is well stored in stable foam structure of rubber and the problem of reduced heat conductivity due to barriers is avoided.

Description

technical field [0001] The invention relates to the field of rubber, in particular to a thermal energy storage system and a preparation method thereof. Background technique [0002] The use of thermal energy storage materials for energy storage is an effective way to store energy. Such materials have been widely used in thermal control systems for energy generation and industrial installations, climate control systems for buildings, and solar energy absorption systems, among others. Thermal energy storage systems are mainly divided into sensitive heat, latent heat and chemical reaction heat according to the nature of stored heat energy. Among them, latent heat, also known as latent heat of phase change, refers to the heat absorbed or released by a unit mass of substance from one phase to another under the condition of isothermal and equal pressure, such as using the phase transition temperature to change a solid from a solid phase to a liquid phase , releasing latent heat....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/40C08J7/02C08L23/16C08L33/02C08L9/00C08L7/00C08F120/06C09K5/06
CPCC08F120/06C08J7/02C08J9/40C08J2307/00C08J2309/00C08J2323/16C08J2433/02C09K5/063
Inventor 张继华皂伟涛王昊陈江涛赵云峰
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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