A kind of high flux heat exchange tube and its preparation method and application

A heat exchange tube, high-flux technology, applied in coatings, electrolytic coatings, etc., can solve the problem that the thermal conductivity of the heat exchange tube cannot meet the requirements of engineering applications, achieve excellent bonding, improve surface brightness and flatness, and improve The effect of bond strength

Active Publication Date: 2021-10-01
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] On the basis of the existing electrodeposition, the present invention proposes a preparation method of a high-flux heat exchange tube, which solves the problem that the thermal conductivity of the current heat exchange tube cannot meet the requirements of engineering applications

Method used

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  • A kind of high flux heat exchange tube and its preparation method and application
  • A kind of high flux heat exchange tube and its preparation method and application
  • A kind of high flux heat exchange tube and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0030] The composition ratio of the copper-based graphene composite electrodeposition solution is: copper sulfate pentahydrate 120g / L, graphene 0.24g / L, polydisulfide sodium sulfonate concentration 50mg / L, chloride ion concentration 10mg / L , the balance is deionized water; the process environment of the deposition solution is: temperature is 45°C, pH=3.5, cathode rotation speed is 60r / min, and the electrical parameters of pulse electrodeposition are: 3V / -0.5V (10ms on / 5ms off). In this case and under the process conditions, the deposited layer has a flat surface, dull surface, poor compactness, and a thickness ratio of 24%. The thermal conductivity of the deposited layer can reach 456W / (m·K ), the heat dissipation efficiency of the high-flux heat exchange tube is increased by 10%.

Embodiment 2

[0032] The composition ratio of the copper-based graphene composite electrodeposition solution is: copper sulfate pentahydrate 120g / L, graphene 0.24g / L, polydisulfide sodium sulfonate concentration 40mg / L, chloride ion concentration 20mg / L , the balance is deionized water; the process environment of the deposition solution is: temperature is 55°C, pH=2.5, cathode rotation speed is 60r / min; the electrical parameters of pulse electrodeposition are: 3V / -0.5V (10ms on / 5ms off). In this case and under the process conditions, the deposited layer has a flat and uniform surface, dark surface, general compactness, and a thickness ratio of 25%. The thermal conductivity of the prepared deposited layer can reach 509W / (m·K ), the heat dissipation efficiency of the high-flux heat exchange tube is increased by 15%.

Embodiment 3

[0034] The composition ratio of the copper-based graphene composite electrodeposition solution is: copper sulfate pentahydrate 120g / L, graphene 0.24g / L, polydisulfide sodium sulfonate concentration 30mg / L, chloride ion concentration 30mg / L , the balance is deionized water; the process environment of the deposition solution is: temperature is 55°C, pH=1.5, cathode rotation speed is 60r / min; the electrical parameters of pulse electrodeposition are: 3V / -0.5V (10ms on / 5ms off). In this case and under the process conditions, the deposited layer has a smooth and uniform surface, bright surface, good compactness, and a thickness ratio of 30%. The thermal conductivity of the prepared deposited layer can reach 600W / (m·K) , The heat dissipation efficiency of high-flux heat exchange tubes has increased by 25%.

[0035] image 3 It is the deposition layer sample prepared by embodiment 3, the surface is bright, smooth and compact;

[0036] Figure 4 It is the SEM and EDS spectrogram of...

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Abstract

The invention belongs to the field of heat exchange materials, and in particular relates to a high-flux heat exchange tube and its preparation method and application. A high-flux heat exchange tube is obtained by uniformly depositing a composite material on the surface of the heat exchange tube by a cathode rotating electrodeposition method. The preparation method of the heat exchange tube proposed by the present invention is that the cathode sample rotates at a constant speed during the electrodeposition process, and the four plates of the anode surround the workpiece (cathode) symmetrically, which can obtain a uniform and dense structure with high thermal conductivity. The deposited layer can increase the heat dissipation efficiency of heat exchange tube components by 10~25%, which greatly improves the working efficiency of components in the heat exchange field.

Description

technical field [0001] The invention belongs to the technical field of heat exchange materials, and in particular relates to a high-flux heat exchange tube and its preparation method and application. Background technique [0002] Metal matrix composites are composite materials that are artificially combined with metal and its alloys as the matrix and one or several metal or non-metallic reinforcing phases. Compared with ordinary composite materials, they have higher specific strength, specific modulus, and durability. Wear performance, thermal and electrical conductivity, and good thermal stability have become an important field of material technology research and development. Graphene has excellent comprehensive properties, and the electron mobility can reach 1×10 5 cm 2 / Vs, Young's modulus is 1TPa, tensile strength is 130GPa, thermal conductivity is 5300W / (m K); at the same time, graphene is a SP 2 The hybrid honeycomb lattice structure, these excellent structures and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/58C25D15/00C25D7/04C25D5/18C25D5/04
CPCC25D3/58C25D5/04C25D5/18C25D7/04C25D15/00
Inventor 魏伟贾飞龙魏坤霞储富强杜庆柏胡静
Owner CHANGZHOU UNIV
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