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A kind of silica-based composite phase change energy storage material and preparation method thereof

A technology of silica and composite phase change, applied in chemical instruments and methods, heat exchange materials, etc., can solve the problems of liquid phase leakage and high phase change enthalpy, achieve high phase change enthalpy, stable performance, and good application prospects Effect

Active Publication Date: 2020-06-30
WENZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composite phase change energy storage material has a high phase change enthalpy, good thermal conductivity and packaging effect, and effectively solves the problem of liquid phase leakage during the use of the material

Method used

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  • A kind of silica-based composite phase change energy storage material and preparation method thereof
  • A kind of silica-based composite phase change energy storage material and preparation method thereof
  • A kind of silica-based composite phase change energy storage material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Measure 40 milliliters of isopropanol (IPA) in a 100 milliliter beaker, weigh 5 grams (0.02mol) of hexadecylamine (HDA) and add it to the isopropanol solvent at a temperature of 50°C and a speed of 500r / min Stir uniformly for 15 minutes under the same conditions to form a uniform colorless and transparent mixed solution I.

[0044] Measure 10 ml (0.045 mol) tetraethyl orthosilicate (TEOS) and 10 ml deionized water (H 2 O) In a 100 ml beaker, stir evenly for 30 minutes at a temperature of 50° C. and a rotational speed of 500 r / min to form Sol II.

[0045] Slowly add solution I to sol II drop by drop at 1 drop / second (using a 5mL disposable plastic dropper), and continue stirring evenly for 12 hours at a temperature of 50°C and a rotation speed of 500r / min. Dry in a drying oven at 50 °C for 24 hours to obtain the final product.

[0046] Carry out IR test to final product, infrared spectrogram sees figure 1 . figure 1 Medium, 3336.87cm -1 There is a sharp single peak,...

Embodiment 2

[0070] Measure 40 milliliters of isopropanol (IPA) in a 100 milliliter beaker, weigh 10 grams (0.04mol) of hexadecylamine (HDA) and add it to the isopropanol solvent at a temperature of 50°C and a speed of 500r / min Stir evenly for 30 minutes under the same conditions to form a uniform colorless and transparent mixed solution I.

[0071] Measure 5 ml (0.022 mol) tetraethyl orthosilicate (TEOS) and 10 ml deionized water (H 2 O) In a 100 ml beaker, stir evenly for 30 min at a temperature of 50° C. and a rotational speed of 500 r / min to form Sol II.

[0072]Slowly add solution I to sol II drop by drop at 1 drop / second (using a 5mL disposable plastic dropper), and continue stirring evenly for 12 hours at a temperature of 50°C and a rotation speed of 500r / min. Dry in a drying oven at 50 °C for 48 hours to obtain the final product.

[0073] Test and analyze according to the same method as in Example 1, it can be determined that the final product obtained in Example 2, the silica-ba...

Embodiment 3

[0075] Measure 30 milliliters of isopropanol (IPA) in a 100 milliliter beaker, weigh 5 grams (0.02mol) of hexadecylamine (HDA) and add it to the isopropanol solvent at a temperature of 50°C and a speed of 500r / min Stir evenly for 30 minutes under the same conditions to form a uniform colorless and transparent mixed solution I.

[0076] Measure 1 ml (0.0045 mol) tetraethyl orthosilicate (TEOS) and 10 ml deionized water (H 2 O) In a 100 ml beaker, stir evenly for 30 min at a temperature of 50° C. and a rotational speed of 500 r / min to form Sol II.

[0077] Slowly add solution I to sol II drop by drop at 1 drop / second (using a 5mL disposable plastic dropper), and continue stirring evenly for 12 hours at a temperature of 50°C and a rotation speed of 500r / min. Dry in a drying oven at 50 °C for 72 hours to obtain the final product.

[0078] Test and analyze according to the same method as in Example 1, it can be determined that the final product obtained in Example 3, the silica-b...

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Abstract

The invention discloses a silica-based composite phase-change energy storage material and a preparation method thereof. The material uses silica as a carrier material and cetylamine as a phase-change substance, and is a novel composite phase-change energy storage material. The material has a high phase change enthalpy, and has good thermal conductivity and packaging effect, which effectively solves the problem of liquid phase leakage during the use of the material. The material is prepared by the following method: adding cetylamine to isopropanol and mixing to obtain solution I, mixing silicon source and deionized water to obtain sol II, slowly adding solution I to sol II, stirring evenly and then drying. . The process of the method of the invention is simple and easy to operate, and the raw materials are simple and easy to obtain, which overcomes the technical problem that hexadecylamine is difficult to be coated, and can be molded without any surfactant.

Description

technical field [0001] The invention belongs to the field of energy storage materials, and in particular relates to a composite phase change energy storage material and a preparation method thereof. Background technique [0002] In the past few decades, with the acceleration of industrial development, people's demand for energy has increased sharply, which has exacerbated the deterioration of the ecological environment. Under the increasingly serious energy crisis and environmental pollution, the energy saving and environmental protection of materials are particularly important. Important, so thermal energy storage has received more and more attention. Latent heat storage is one of the most efficient methods of thermal energy storage. Latent heat storage means that a material absorbs or releases a large amount of heat through the melting or solidification process, and realizes the storage and release of heat, that is, the material can use its own phase change to realize ene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 翟兰兰王瑞芳李炳蒙邹超刘若望兰云军柴玉叶
Owner WENZHOU UNIV