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Preparation method of latent heat transfer material of phase-change paraffin emulsion

A phase-change paraffin and emulsion technology, applied in the field of paraffin wax materials, can solve the problems of demulsification and delamination, low thermal conductivity, poor heat transfer performance, etc., to reduce cycle power consumption, reduce cycle flow, and increase heat transfer density Effect

Inactive Publication Date: 2017-05-24
汪逸凡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention is: aiming at the problems of low thermal conductivity and poor heat transfer performance of traditional phase-change paraffin emulsion latent heat transport materials, and poor stability during storage, and prone to demulsification and delamination, a kind of Add self-made porous rod-shaped tin dioxide, supplemented by self-made compound emulsifier, and mix with paraffin to make phase-change paraffin emulsion latent heat transport material
The invention uses self-made porous rod-shaped tin dioxide additive to improve the thermal conductivity of the emulsion, and improves the dispersion performance of the emulsion by adding a compound emulsifier, effectively solving the problems of low thermal conductivity and poor stability of traditional latent heat transport materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] Sequentially weigh 50g of aluminum powder crushed to 200 mesh, 300g of crushed iron oxide powder to 200 mesh, and mix uniformly to obtain No. 1 mixed powder, then successively weigh 270g of crushed to 200 mesh of stannous oxide powder, 160g of crushed to 200 mesh of copper oxide powder , mixed uniformly to obtain No. 2 mixed powder, then 30g of calcium carbonate powder crushed to 180 mesh was evenly spread on the bottom of the crucible, and the obtained No. 2 mixed powder was evenly covered on the surface of the calcium carbonate powder, and then No. 1 mixed powder was evenly covered on No. 2 mixed powder surface, and insert a 6cm long magnesium bar on the No. 2 mixed powder surface; place the above crucible in a stainless steel basin, pour clean water into the basin until the water surface is 0.8cm away from the crucible mouth, and then ignite the magnesium to make the material in the crucible react by self-propagation. After the reaction is over, remove the crucible, c...

example 2

[0020]Sequentially weigh 65g of aluminum powder crushed to 325 mesh, 385g of iron oxide powder crushed to 325 mesh, and mix uniformly to obtain No. Copper powder, mixed uniformly to obtain No. 2 mixed powder, then 40g of calcium carbonate powder crushed to 200 mesh was evenly spread on the bottom of the crucible, and then the obtained No. 2 mixed powder was evenly covered on the surface of the calcium carbonate powder, and then No. 1 mixed powder was evenly Cover the surface of No. 2 mixed powder, and insert a 7cm-long magnesium strip on the surface of No. 2 mixed powder; place the above-mentioned crucible in a stainless steel basin, pour clean water into the basin until the water surface is 1cm away from the mouth of the crucible, and then ignite Magnesium strips to make the materials in the crucible self-propagating reaction. After the reaction is over, remove the crucible, collect the material slag that is sprayed into the stainless steel basin, and put the material slag int...

example 3

[0023] Sequentially weigh 80g of aluminum powder crushed to 400 mesh, 480g of crushed to 400 mesh of iron oxide powder, and mix uniformly to obtain No. 1 mixed powder, then weigh 410g of crushed to 400 mesh of stannous oxide powder, and 240g of crushed to 400 mesh of copper oxide powder , mixed uniformly to obtain No. 2 mixed powder, then 50g of calcium carbonate powder crushed to 200 mesh was evenly spread on the bottom of the crucible, and then the obtained No. 2 mixed powder was evenly covered on the surface of the calcium carbonate powder, and then No. 1 mixed powder was evenly covered on No. 2 mixed powder surface, and a magnesium strip with a length of 8 cm is inserted on the No. 2 mixed powder surface; the above-mentioned crucible is placed in a stainless steel basin, and clean water is poured into the basin until the water surface is 1.2 cm away from the crucible mouth, and then the magnesium is ignited. to make the material in the crucible react by self-propagation. Af...

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Abstract

The invention discloses a preparation method of a latent heat transfer material of a phase-change paraffin emulsion, and belongs to the technical field of paraffin materials. The method comprises the steps of initiating first mixed powder in a crucible to carry out self-propagating reaction by using a magnesium rod, cooling and crystallizing aluminum oxide generated by reaction on the surface of the crucible, initiating second mixed powder to react, and generating a stannic oxide melt; decomposing bottom calcium carbonate by using generated molten iron and copper with relatively high density to generate carbon dioxide, spraying a stannic oxide melt generated by reaction into a stainless steel basin, and compounding spanoulis-80 and the like with polyaspartic acid to prepare a compound emulsifier; and finally mixing the compound emulsifier with deionized water and paraffin evenly, and quickly cooling through liquid nitrogen so as to prepare the latent heat transfer material of the phase-change paraffin emulsion. The heat conductivity coefficient of the emulsion is improved by using rod-like porous stannic oxide, the dispersing performance of the emulsion is improved through assist of the compound emulsifier, and the problems of a low heat conductivity coefficient and poor stability of a traditional latent heat transfer material are effectively solved.

Description

technical field [0001] The invention discloses a preparation method of a phase-change paraffin emulsion latent heat transport material, which belongs to the technical field of paraffin wax materials. Background technique [0002] Phase-change paraffin emulsion latent heat transport material is a multi-phase dispersion system formed by emulsification of water, phase-change paraffin and emulsifier. It has good fluidity, non-toxic and non-corrosive, stable chemical properties, economical, supercooled Advantages of being small. Its phase change temperature varies with the type of phase change paraffin material added. There are low-temperature paraffin emulsions suitable for refrigeration and air conditioning, and high-temperature paraffin emulsions suitable for heating and waste heat utilization. Compared with sensible heat transfer, latent heat transfer accompanied by phase change (solid-liquid phase change of paraffin particles) has the advantages of high heat flux density an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
CPCC09K5/066
Inventor 汪逸凡马俊杰
Owner 汪逸凡
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