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Preparation method of electromagnetic shielding TPU (thermoplastic polyurethane) film

An electromagnetic shielding and film technology, applied in the field of preparation of electromagnetic shielding TPU film, achieves the effects of uniform fiber thickness, cost saving and large specific surface area

Active Publication Date: 2017-12-01
常州双联精密材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no electromagnetic shielding TPU film on the market

Method used

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  • Preparation method of electromagnetic shielding TPU (thermoplastic polyurethane) film

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Embodiment Construction

[0036] The name of the main instrument that the present invention adopts, information such as model and place of production are all listed in Table 1 in detail.

[0037] Table 1:

[0038]

[0039] The preparation method of electromagnetic shielding TPU film of the present invention is carried out according to the following steps successively:

[0040] The first step is to use TPU (TPU is thermoplastic polyurethane) as raw material, and make TPU melt-blown non-woven fabric through melt-blown spinning;

[0041] The second step is to prepare TPU composite conductive fiber net;

[0042] The third step is to prepare electromagnetic shielding TPU film.

[0043] The second step is divided into four sub-steps:

[0044] The first sub-step is to add carboxylated multi-walled carbon nanotubes (i.e. c-MWCNTs) and xylene to the beaker respectively to make carboxylated multi-walled carbon nanotubes mixture, the concentration of carboxylated multi-walled carbon nanotubes is 0 mg / mL-2.0...

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Abstract

The invention discloses a preparation method of an electromagnetic shielding TPU (thermoplastic polyurethane) film. The method comprises steps as follows: S1, TPU melt-blown non-woven fabric is prepared from the raw material, namely, TPU with a melt-blowing spinning technology; S2, a c-MWCNTs (carboxylic multi-walled carbon nanotubes) / TPU conductive composite fiber net is prepared; S3, the electromagnetic shielding TPU film is prepared. The melt-blown TPU fiber net is modified with c-MWCNTs, the TPU conductive composite fiber net and a TPU film are subjected to hot pressing, and the electromagnetic shielding TPU composite film is prepared, has excellent electromagnetic shielding performance and is applicable to films, clothes and other fields.

Description

technical field [0001] The invention relates to the field of construction technology, in particular to a preparation method of an electromagnetic shielding TPU film. Background technique [0002] Since the beginning of this century, the rapid development of electronic technology and the wide application of wireless technology have made the problem of electromagnetic radiation more and more prominent. Therefore, it is extremely necessary to research and develop an electromagnetic shielding film that is easy to process, low in cost and excellent in electromagnetic shielding effect to protect people's health and prevent people from being harmed by electromagnetic waves. [0003] Research has found that general materials will produce reflection, scattering, absorption and a small amount of transmission when they are radiated by electromagnetic waves, among which scattering and reflection will cause secondary pollution to the environment. Therefore, the development of electromagn...

Claims

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Application Information

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IPC IPC(8): B32B37/10D06M11/74D06M101/38
CPCB32B37/10D06M11/74D06M2101/38
Inventor 石素宇闫新王利娜辛长征王启程黄守龙万铁桥
Owner 常州双联精密材料有限公司
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