CN110699044B - Polypyrrole-based composite shaping phase-change material and preparation method thereof - Google Patents

Polypyrrole-based composite shaping phase-change material and preparation method thereof Download PDF

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CN110699044B
CN110699044B CN201910948617.9A CN201910948617A CN110699044B CN 110699044 B CN110699044 B CN 110699044B CN 201910948617 A CN201910948617 A CN 201910948617A CN 110699044 B CN110699044 B CN 110699044B
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polypyrrole
change material
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aerogel
based composite
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CN110699044A (en
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李敏
张馨予
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Southeast University
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    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/02Materials undergoing a change of physical state when used
    • C09K5/06Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
    • C09K5/063Materials absorbing or liberating heat during crystallisation; Heat storage materials
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
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    • E04B1/74Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
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    • E04F15/02Flooring or floor layers composed of a number of similar elements
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    • E04BUILDING
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    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
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    • C04B2103/0068Ingredients with a function or property not provided for elsewhere in C04B2103/00
    • C04B2103/0071Phase-change materials, e.g. latent heat storage materials used in concrete compositions
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2290/00Specially adapted covering, lining or flooring elements not otherwise provided for
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Abstract

The invention relates to a polypyrrole-based composite shape-stabilized phase-change material and a preparation method thereof. The phase-change material is prepared from raw materials including pyrrole, oleic acid, ferric trichloride and paraffin by a sol-gel method to prepare polypyrrole aerogel and vacuum adsorption of the paraffin to prepare the composite shape-stabilized phase-change material. And selecting oleic acid (HLB is 1) as a surfactant in the process of preparing the polypyrrole hydrogel by a sol-gel method, and freeze-drying the polypyrrole hydrogel to prepare the loose, porous and high-porosity polypyrrole aerogel. Oleic acid can change the microscopic surface morphology of the polypyrrole aerogel, so that the prepared polypyrrole aerogel mostly has effective pores larger than 20 nm. The composite shaped phase-change material prepared by the invention fills the vacancy of the composite shaped phase-change material with the conductive property, can be applied to conductive composite phase-change material concrete, and fully exerts the latent heat performance of the composite shaped phase-change material.

Description

Polypyrrole-based composite shaping phase-change material and preparation method thereof
Field of the invention
The invention relates to a phase change energy storage material technology, and belongs to the technical field of phase change energy storage material preparation.
Background
At present, a large amount of energy is consumed in the world every year due to production and life, the reserve of energy serving as the life of economic society and the survival and development power of human society is limited, and the thermal efficiency of traditional non-renewable conventional energy sources such as petroleum, natural gas, coal and other petrochemical fuel energy sources is generally low in the using process. Therefore, it is important to develop efficient materials or devices for the storage of new energy sources. Because the supply and the demand of natural energy have stronger practicality, the phase change energy storage technology is utilized to effectively regulate the time of the natural energy, and the utilization efficiency of natural clean energy can be improved. Phase change materials as thermal functional materials capable of absorbing or releasing latent heat, capable of storing thermal energy in a process or for a period of time, and used or transferred to a different location at a later point in time, are thus in various energy storage floors, air conditioning thermal storage systems, and the like.
Phase change materials are often used as means in the field of buildings, and room temperature comfort can be obviously improved by adding the phase change materials into floors and building enclosures. The conductive concrete can generate heat when being electrified, the phase-change material can store the heat in time, the conductive material and the phase-change material are applied to the concrete together, and therefore the power station can supply power and heat in time, the electric power in the valley period can be converted into heat energy to be stored, the heat energy can be used in the peak period of supplying power for the city, the use of heating equipment such as an air conditioner is reduced, and the peak clipping and valley filling of the electric power are realized.
Disclosure of Invention
The technical problem is as follows: the invention aims to provide a novel polypyrrole-based composite shaped phase-change material and a preparation method thereof.
The technical scheme is as follows: in order to achieve the above purpose and other related purposes, the polypyrrole-based composite shape-stabilized phase change material adopts the following technical scheme:
polypyrrole aerogel with conductive property is used as a supporting material, and then paraffin is adsorbed to obtain the polypyrrole-based composite shaping phase-change material.
Wherein the content of the first and second substances,
the supporting material polypyrrole aerogel comprises pyrrole, ferric chloride hexahydrate and oleic acid, the molar mass ratio of the pyrrole to the ferric chloride hexahydrate is 1:3, Fe3+ can be guaranteed to fully participate in the polymerization reaction of the pyrrole, and the molar mass ratio of the pyrrole to the oleic acid is 1:5-1: 7.
The polypyrrole aerogel used as the support material has the average pore diameter larger than 20nm effective pores according to BET representation.
The support material polypyrrole aerogel has an adsorption rate of 69% -73% to the organic phase change material paraffin under the vacuum adsorption condition.
The phase-change temperature of the composite sizing phase-change material is 34.6 ℃, the phase-change enthalpy is 97.6J/g, and the electric conductivity is 0.0842S/cm.
The preparation method of the polypyrrole-based composite sizing phase-change material comprises the following steps:
step 1, mixing pyrrole and oleic acid with a molar ratio of 7:1 in deionized water; adding ferric chloride hexahydrate solution, wherein the molar ratio of Fe3+ to pyrrole is 1:1, and electromagnetically stirring until the solution becomes black to obtain polypyrrole hydrogel;
step 2, putting the polypyrrole hydrogel obtained in the step 1 into a vacuum freeze dryer, and carrying out vacuum drying for 48-72 hours to prepare polypyrrole aerogel;
and 3, adsorbing the polypyrrole aerogel prepared in the step 2 by using vacuum to obtain an organic phase change material paraffin to prepare the polypyrrole aerogel-based composite sizing phase change material.
Has the advantages that: according to the invention, the characteristic that the aerogel generally has higher porosity is utilized, the average pore diameter of the polypyrrole aerogel is changed by formulating the surfactant, and compared with the support material of the composite sizing phase-change material researched at present, the polypyrrole aerogel used as the support material has higher adsorption rate on the organic phase-change material, and the prepared polypyrrole aerogel-based composite sizing phase-change material has certain conductivity by utilizing the conductive property of the polypyrrole aerogel.
Drawings
FIG. 1 is a schematic flow chart of a preparation method of a polypyrrole-based composite shape-stabilized phase-change material.
FIG. 2 is a diagram of a polypyrrole aerogel placed in a polystyrene board incubator.
Detailed Description
Example 1
0.89g (12.52mmol) of pyrrole monomer and 0.71g of oleic acid are put into a beaker and fully mixed with 4.00ml of deionized water, and the mixture is stirred for 60 seconds by an electromagnetic stirrer and is marked as solution A; 3.38g (12.52mol) of ferric chloride hexahydrate are weighed out and dissolved in 4.00ml of deionized water and designated as solution B. Slowly pouring the solution B into the solution A, keeping magnetic stirring, and immediately taking out magnetons after the solution becomes dark. The formation of polypyrrole hydrogel was observed by slowly tilting the beaker after waiting about 10 seconds.
The prepared polypyrrole hydrogel is cleaned by deionized water and absolute ethyl alcohol, placed in an ultralow temperature refrigerator at the temperature of 80 ℃ below zero, and kept stand for 24 hours. And taking out the polypyrrole hydrogel after 24 hours, putting the polypyrrole hydrogel into a vacuum freeze dryer, and freeze-drying for 60-72 hours to obtain the polypyrrole aerogel. And adsorbing the organic phase change material paraffin by polypyrrole aerogel in a vacuum adsorption mode to obtain the polypyrrole-based composite shaping phase change material.
Example 2: preparation of polypyrrole-based composite shaping phase-change material
0.89g (12.52mmol) of pyrrole monomer and 0.51g of oleic acid are taken to be mixed with 4.00ml of deionized water in a beaker, and stirred for 60 seconds by an electromagnetic stirrer to be marked as solution A; 3.38g (12.52mol) of ferric chloride hexahydrate are weighed out and dissolved in 4.00ml of deionized water and designated as solution B. Slowly pouring the solution B into the solution A, keeping magnetic stirring, and immediately taking out magnetons after the solution becomes dark. The formation of polypyrrole hydrogel was observed by slowly tilting the beaker after waiting about 10 seconds. The prepared polypyrrole hydrogel is cleaned by deionized water and absolute ethyl alcohol, placed in an ultralow temperature refrigerator at the temperature of 80 ℃ below zero, and kept stand for 24 hours. And taking out the polypyrrole hydrogel after 24 hours, placing the polypyrrole hydrogel in a vacuum freeze dryer, and freeze-drying for 72 hours to obtain the polypyrrole aerogel. And adsorbing the organic phase change material paraffin by polypyrrole aerogel in a vacuum adsorption mode to obtain the polypyrrole-based composite shaping phase change material.
Example 3: practical application effect of polypyrrole-based composite shaping phase-change material
The prepared polypyrrole-based composite sizing phase-change material is filled in a polystyrene board incubator, the device diagram is shown in figure 2, and a box body without the phase-change material is arranged for comparison. The temperature of the comparison box is basically stabilized at about 30 ℃ at the temperature of 40 ℃ for 80 minutes, the temperature is stabilized at about 34 ℃ at the temperature of 130 minutes, and the final stable temperature of the experiment box is 3-4 ℃ lower than the temperature of the comparison box by comparing the temperature curves of the experiment box and the comparison box at all environmental temperatures. Test results show that the polypyrrole-based composite sizing phase-change material prepared by the invention has an obvious temperature control effect.
And selecting oleic acid (HLB is 1) as a surfactant in the process of preparing the polypyrrole hydrogel by a sol-gel method, and freeze-drying the polypyrrole hydrogel to prepare the loose, porous and high-porosity polypyrrole aerogel. Oleic acid can change the microscopic surface morphology of the polypyrrole aerogel, so that the prepared polypyrrole aerogel mostly has effective pores larger than 20 nm. The polypyrrole aerogel modified by the oleic acid has high adsorption rate to paraffin under the vacuum adsorption condition, and hardly generates quality loss after multiple melting and freezing cycles. Meanwhile, the polypyrrole aerogel is characterized by a porous structure in terms of microscopic morphology, and paraffin can be well adsorbed into pores of the polypyrrole aerogel. The composite shaped phase-change material prepared by the invention fills the vacancy of the composite shaped phase-change material with the conductive property, can be applied to conductive composite phase-change material concrete, and fully exerts the latent heat performance of the composite shaped phase-change material.

Claims (5)

1. A polypyrrole-based composite shaping phase-change material is characterized in that polypyrrole aerogel with conductive property is used as a supporting material, and paraffin is adsorbed to obtain the polypyrrole-based composite shaping phase-change material;
the supporting material polypyrrole aerogel comprises pyrrole, ferric chloride hexahydrate and oleic acid, wherein the molar mass ratio of the pyrrole to the ferric chloride hexahydrate is 1:1, and the molar mass ratio of the pyrrole to the oleic acid is 5: 1-7: 1;
wherein, the preparation of polypyrrole aerogel is: mixing pyrrole and oleic acid with the molar mass ratio of 5: 1-7: 1 in deionized water; adding ferric chloride hexahydrate solution, wherein Fe3+The molar ratio of the polypyrrole to the pyrrole is 1:1, and the solution is electromagnetically stirred until the solution becomes black to obtain polypyrrole hydrogel; and then putting the obtained polypyrrole hydrogel into a vacuum freeze dryer, and carrying out vacuum drying for 48-72 hours to prepare the polypyrrole aerogel.
2. The polypyrrole-based composite shape-stabilized phase-change material according to claim 1, wherein the polypyrrole aerogel used as the support material has an average pore diameter greater than 20nm as an effective pore according to BET characterization.
3. The polypyrrole-based composite shape-stabilized phase-change material according to claim 1, wherein the polypyrrole aerogel as the supporting material has an adsorption rate of 69% -73% to the organic phase-change material paraffin under a vacuum adsorption condition.
4. The polypyrrole-based composite shape-stabilized phase-change material according to claim 1, wherein the phase-change temperature of the composite shape-stabilized phase-change material is 34.6 ℃, the enthalpy of phase change is 97.6J/g, and the electric conductivity is 0.0842S/cm.
5. A method for preparing the polypyrrole based composite shaped phase change material according to the claim 1, 2, 3 or 4, characterized in that the preparation method comprises the following steps:
step 1, mixing pyrrole and oleic acid with a molar mass ratio of 7:1 in deionized water; adding ferric chloride hexahydrate solution, wherein Fe3+The molar ratio of the polypyrrole to the pyrrole is 1:1, and the solution is electromagnetically stirred until the solution becomes black to obtain polypyrrole hydrogel;
step 2, putting the polypyrrole hydrogel obtained in the step 1 into a vacuum freeze dryer, and carrying out vacuum drying for 48-72 hours to prepare polypyrrole aerogel;
and 3, adsorbing the polypyrrole aerogel prepared in the step 2 by using vacuum to obtain an organic phase change material paraffin to prepare the polypyrrole aerogel-based composite sizing phase change material.
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CN112226209B (en) * 2020-11-11 2021-08-03 北京科技大学 Preparation and application of hollow tubular conductive polymer composite fiber aerogel material
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101203467A (en) * 2005-07-26 2008-06-18 波音公司 Composite materials of aerogel and phase change material
CN105566861A (en) * 2016-03-04 2016-05-11 廖彩芬 Enhanced graphene/conducting polymer aerogel and preparation method thereof
CN108689412A (en) * 2017-04-12 2018-10-23 中国科学院苏州纳米技术与纳米仿生研究所 A kind of aeroge micro mist and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101203467A (en) * 2005-07-26 2008-06-18 波音公司 Composite materials of aerogel and phase change material
CN105566861A (en) * 2016-03-04 2016-05-11 廖彩芬 Enhanced graphene/conducting polymer aerogel and preparation method thereof
CN108689412A (en) * 2017-04-12 2018-10-23 中国科学院苏州纳米技术与纳米仿生研究所 A kind of aeroge micro mist and preparation method thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Compressible polypyrrole aerogel as a lightweight and wideband electromagnetic microwave absorber;Lujun Yu;《Journal of Materials Science: Materials in Electronics》;20190212(第30期);第5598-5608页 *
Self-assembled ultralight three-dimensional polypyrrole aerogel for effective;Aming Xie;《APPLIED PHYSICS LETTERS》;20150602;第106卷;第222902页 *

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