Permeation-resistant three-layer heat exchange tube and preparation method thereof

A heat exchange tube and permeation-resistant technology, which is applied in the direction of hoses, pipes, mechanical equipment, etc., can solve the problems of cooling pipe coolant leakage, affecting cooling effect, poor hydrolysis resistance, etc., to increase vehicle loss and not easy Good effect of peeling and stability

Inactive Publication Date: 2021-04-23
中山诗兰姆汽车零部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the poor hydrolysis resistance of ordinary single-layer cooling pipes, after long-term use, the inside of the pipes is prone to aging and even cracks, resulting in leakage of coolant in the cooling pipes, which further seriously affects the cooling effect and increases the loss, which is undoubtedly a substantial defect for the car itself

Method used

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  • Permeation-resistant three-layer heat exchange tube and preparation method thereof
  • Permeation-resistant three-layer heat exchange tube and preparation method thereof
  • Permeation-resistant three-layer heat exchange tube and preparation method thereof

Examples

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Effect test

Embodiment 1

[0035] The permeation-resistant heat exchange tube of the present invention can be made into a light tube, and the light tube includes an inner layer of PP, an adhesive layer and an outer layer of PA12. The preparation method is as follows:

[0036] Step 1. Put the materials of the inner layer, adhesive layer and outer layer into the multi-composite extruder to extrude the three-layer tubular structure; set the extrusion temperature of the inner layer to 240°C, and the pressure of the extrusion material to 170bar; the adhesive layer The extrusion temperature of the outer layer is 240°C, and the extrusion liquid pressure is 120bar; the extrusion temperature of the outer layer is 240°C, and the extrusion liquid pressure is 170bar. When extruding, control the thickness of the inner layer to be min (minimum) 0.5mm, the thickness of the adhesive layer to be min0.1, the thickness of the outer layer to be min0.75mm, and the thickness of the pipe wall to be 1.5±0.15mm.

[0037] Step ...

Embodiment 2

[0041] The permeation-resistant heat exchange tube of the present invention can be made into a light tube, and the light tube includes an inner layer of PP, an adhesive layer and an outer layer of PA12. The preparation method is as follows:

[0042] Step 1. Put the materials of the inner layer, adhesive layer and outer layer into the multi-composite extruder to extrude the three-layer tubular structure; set the extrusion temperature of the inner layer to 245°C, and the pressure of the extrusion material to 160bar; the adhesive layer The extrusion temperature is 245°C, and the extrusion liquid pressure is 100bar; the extrusion temperature of the outer layer is 245°C, and the extrusion liquid pressure is 155bar. Control the thickness of its inner layer, adhesive layer, outer layer and whole tube wall during extrusion to be the same as in Example 1.

[0043] Steps 2, 3 and 4 are the same as in Example 1.

Embodiment 3

[0045] The permeation-resistant heat exchange tube of the present invention can be made into a corrugated tube, and the corrugated tube also includes a PP inner layer, an adhesive layer and a PA12 outer layer. The structure of the bellows is as Figure 2-3 shown.

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Abstract

The invention relates to a permeation-resistant three-layer heat exchange tube which comprises an inner layer made of a PP material, a bonding layer and an outer layer. The bonding layer is made of a bonding material containing PP. The outer layer is made of a PA material. The invention further relates to a preparation method of the permeation-resistant three-layer heat exchange tube. According to the heat exchange tube, the inner layer has excellent hydrolysis resistance and aging resistance, the outer layer can adapt to changes of the external environment, it is guaranteed that the cooling effect meets the requirement, meanwhile, the service life of an automobile battery system is longer, and the stability of automobile parts is better.

Description

technical field [0001] The invention relates to the technical field of heat exchange tubes, in particular to a permeation-resistant three-layer heat exchange tube and a preparation method thereof. Background technique [0002] With the development of the economy and the continuous improvement of human living standards, countries around the world are paying more and more attention to ecological development. In the use of automobiles, the requirements for automobile emissions are becoming more and more stringent. Various automobile factories are committed to developing new energy sources powered by batteries. car. [0003] The BMS (battery management system) of new energy electric vehicles needs to install heat exchange tubes (cooling pipes). The battery system of new energy vehicles cools down the battery pack by circulating coolant through the heat exchange tube, and the main components of the coolant are water, antifreeze, additives, etc. The medium flowing through the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L11/06F16L11/11B29C48/09B29C48/18
CPCF16L11/06F16L11/11B29C48/09B29C48/18
Inventor 张志超邓小东王冰
Owner 中山诗兰姆汽车零部件有限公司
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