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Preparation method of modified paraffin

A paraffin and modification technology, applied in the field of materials, can solve problems such as poor processability, and achieve the effects of excellent phase change energy storage performance, good energy storage performance, and easy popularization and application.

Inactive Publication Date: 2013-07-10
SHAANXI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method of modified paraffin, which is economical, convenient, practical and easy to popularize and apply. The prepared modified paraffin not only improves the phase change energy storage performance, but also overcomes the existing Disadvantages of poor processability

Method used

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  • Preparation method of modified paraffin

Examples

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Effect test

Embodiment 1

[0021] Weigh 80 grams of paraffin, heat the paraffin to 80° C. to melt it, then add 4 grams of benzoyl peroxide to the paraffin under stirring, heat up to 110° C. to react for 24 hours after stirring evenly, and cool after the reaction to obtain Modified paraffin.

[0022] In the molten state, the apparent viscosity of the modified paraffin wax is significantly higher than that before modification. It was determined that the phase transition temperature of the modified paraffin wax was 64.1° C., and the phase transition enthalpy was 159 kJ / kg.

Embodiment 2

[0024] Weigh 80 grams of paraffin, heat the paraffin to 80° C. to melt it, then add 8 grams of benzoyl peroxide to the paraffin under stirring, heat up to 110° C. to react for 16 hours after stirring evenly, and cool after the reaction to obtain Modified paraffin.

[0025] In the molten state, the apparent viscosity of the modified paraffin wax is significantly higher than that before modification. It is determined that the phase transition temperature of the modified paraffin wax is 66.2° C., and the phase transition enthalpy is 162 kJ / kg.

Embodiment 3

[0027] Weigh 80 grams of paraffin, heat the paraffin to 80° C. to melt it, then add 5 grams of cumene peroxide to the paraffin under stirring, heat up to 130° C. to react for 20 hours after stirring evenly, and cool after the reaction to obtain Modified paraffin.

[0028] In the molten state, the apparent viscosity of the modified paraffin wax is significantly higher than that before modification. It is determined that the phase transition temperature of the modified paraffin wax is 65.6° C., and the phase transition enthalpy is 160 kJ / kg.

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Abstract

The invention provides a preparation method of modified paraffin. The modified paraffin is obtained by crosslinking paraffin in a molten state at appropriate temperature by taking organic peroxide as a crosslinking agent; and the obtained modified paraffin has the characteristics of high phase change enthalpy value, good energy storage property, good heat stability, high chemical stability, and the like. The preparation method provided by the invention is economic, simple, convenient, practical and easy to popularize and apply; the paraffin is a byproduct during petroleum extraction and is rich in source; and the preparation method provided by the invention also provides an effective way for the comprehensive utilization of the industrial by-product and has application prospect in multiple technical fields of solar energy storage, energy utilization and transformation, waste coolness and waste heat utilization, and the like.

Description

technical field [0001] The invention belongs to the technical field of materials and relates to a preparation method of modified paraffin. Background technique [0002] Energy saving and environmental protection are the most important issues in the field of energy utilization. Using phase change latent heat of phase change materials to store energy (cold storage, heat storage) is a new environmental protection and energy saving technology. In recent years, phase change energy storage materials (PCMs) have become a hot research topic in energy utilization and material science at home and abroad. Due to the wide application prospects of phase change materials, it has become a new material that has been paid more and more attention by people, and practical tests have been started on it. [0003] According to the phase change form, phase change energy storage materials are mainly divided into solid-solid phase change and solid-liquid phase change energy storage materials; accor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G73/38
Inventor 陈立贵王忠付蕾彭莹冯小明
Owner SHAANXI UNIV OF TECH
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