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Composite film with the function of shielding electromagnetic field

A composite paste and electromagnetic field technology, which is applied to home appliances, other home appliances, and synthetic resin layered products, can solve problems such as human health hazards, electromagnetic interference, and abnormal work, so as to improve utilization, stability, and improvement. The effect of product service life

Active Publication Date: 2017-12-12
斯迪克新型材料(江苏)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The electromagnetic waves released by electronic products will bring electromagnetic interference to other electronic devices around them, making them work abnormally; at the same time, they will also cause harm to human health

Method used

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  • Composite film with the function of shielding electromagnetic field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~4

[0034] Embodiments 1 to 4: A composite film with the function of shielding electromagnetic fields, including a PET insulating layer 1, a metal layer 2, a wave-absorbing layer 3 and a release material layer 4, and the PET insulating layer 1 and the metal layer 2 are provided with The first adhesive layer 5, the second adhesive layer 6 is arranged between the metal layer 2 and the wave-absorbing layer 3, and the surface of the metal layer 2 in contact with the wave-absorbing layer 3 is provided with several parallel-arranged prism protrusions The starting part 8; the third adhesive layer 7, the polypropylene film layer 10 and the fourth adhesive layer 9 are sequentially arranged between the wave-absorbing layer 3 and the release material layer 4; the fourth adhesive layer 9 and the fourth adhesive layer The surface in contact with the release material layer 4 has several bumps 11;

[0035] The components and contents of the absorbing layer 3 are as shown in Table 1:

[0036] Ta...

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Abstract

The invention discloses a composite pasting film with the electromagnetic field shielding function. The composite film comprises a PET insulating layer, a metal layer, a wave absorbing layer and a release material layer. A first adhesive layer is disposed between the PET insulating layer and the metal layer, a second adhesive layer is arranged between the metal layer and the wave absorbing layer, and a plurality of parallel prism protruding parts are arranged on the surface, making contact with the wave absorbing layer, of the metal layer. The wave absorbing layer is formed by mixing the components comprising, by weight, 100 parts of wave absorbing powder, 20-35 parts of butyl acrylate, 10-20 parts of acrylic acid, 20-35 parts of 2-ethylhexyl acrylate, 10-30 parts of methyl methacrylate, 1-3 parts of vinyl acetate, 0.1-1 part of methacrylic acid-2-hydroxyethyl, 0.5-2 parts of sodium polyacrylate and 0.4-1 part of methyl ethyl ketone peroxide. The composite pasting film with the electromagnetic field shielding function increases the utilization rate of a reflection electromagnetic field of the metal layer, remarkably improves wave absorbing performance of protective adhesive tape, avoids over-concentration of heat and facilitates heat diffusion.

Description

technical field [0001] The invention belongs to the technical field of electronic materials, in particular to a composite film with the function of shielding electromagnetic fields. Background technique [0002] The development of the electronics and communication industry is advancing by leaps and bounds, and more and more electronic and electrical products have entered the lives of ordinary people. While these products improve people's quality of life, they also bring about a prominent problem, that is, the problem of electromagnetic radiation. The electromagnetic waves released by electronic products will bring electromagnetic interference to other electronic devices around them, making them work abnormally; at the same time, they will also cause harm to human health. [0003] At present, miniaturization and high integration are the mainstream trends in the development of electronic products, and the internal space of these products is relatively small. Among the wave-a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B15/08B32B15/09B32B27/06B32B27/08B32B27/28B32B27/32B32B27/36B32B27/18B32B7/12B32B7/06B32B33/00B32B3/30C08K13/02C08K3/22C08K3/16C08K3/08C08K3/04C08F220/18C08F220/06C08F220/14C08F218/08C08F220/28
CPCB32B3/30B32B7/06B32B7/12B32B15/08B32B15/09B32B27/06B32B27/08B32B27/18B32B27/28B32B27/32B32B27/36B32B33/00B32B2264/0278B32B2264/102B32B2264/105B32B2264/108B32B2264/12B32B2307/212B32B2307/302B32B2571/00C08F220/18C08F220/1804C08F220/1808C08F220/281C08K3/04C08K3/08C08K3/16C08K3/22C08K13/02C08K2003/0856C08K2003/2293C08F220/06C08F220/14C08F218/08C08F220/28
Inventor 金闯梁豪
Owner 斯迪克新型材料(江苏)有限公司
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