Magnetic multi-wall heat shrinkable tube and manufacturing method thereof

Abstract

The invention discloses a magnetic multi-wall heat shrinkable tube and a manufacturing method thereof to overcome the defects of time and energy waste, low production efficiency and high manufacturing cost when an electromagnetic component is subjected to magnetic shielding. The invention discloses a material component formula of the magnetic multi-wall heat shrinkable tube and the manufacturing method thereof, which are characterized in that: magnetic powder is added into the material formula of the heat shrinkable tube to ensure that the heat shrinkable tube has permeability. By using the magnetic multi-wall heat shrinkable tube provided by the invention, an outermost wall layer is made from the non-magnetic or low magnetic material, and at least one inner wall layer is made from the high magnetic material, so that the magnetic multi-wall heat shrinkable tube has the advantages of high magnetic shielding performance on the electromagnetic component, simple operation and low manufacturing cost, and meanwhile also can ensure that the outer wall layer meets the strict apparent requirement.

Description

technical field [0001] The invention relates to a heat-shrinkable tube, in particular to a magnetically conductive multi-wall heat-shrinkable tube and a preparation method thereof. Background technique [0002] As we all know, all kinds of electromagnetic components will generate magnetic fields when they work, which will have a certain impact on peripheral equipment. The most common components of this type are inductors, transformers and other components. In order to reduce the magnetic field generated by electromagnetic components during operation The current method is to magnetically shield the electromagnetic components, that is, directly coat a layer of magnetically conductive coating made of glue on the outer surface of the electromagnetic components, or cover with a magnetically conductive cup, and then glue the components The device and the magnetic cup are sealed and fixed. Since the glue needs a certain amount of time to cure, such an operation is not only time-con...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the disadvantages of time-consuming, labor-intensive, low production efficiency, and high manufacturing cost in magnetically shielding electromagnetic components, the invention discloses a material composition formula of a magnetically conductive multi-wall heat-shrinkable tube and discloses its manufacturing method. Adding magnetic powder to the material formula of the heat-shrinkable tube makes the heat-shrinkable tube magnetically conductive. Using the magnetically conductive multi-wall heat-shrinkable tube proposed by the present invention, the outermost wall layer is made of non-magnetic or low-magnetic material and at least one inner wall layer is Made of high magnetic material, it not only has good magnetic shielding performance for electromagnetic components, but also has the advantages of simple operation and low manufacturing cost, and at the same time can ensure that the outer wall layer meets strict appearance requirements