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Preparation method for electromagnetic shielding PP thin film

An electromagnetic shielding and film technology, which is applied in the field of preparation of electromagnetic shielding PP film, can solve the problems of ineffective control of electromagnetic wave reflection, single protective function, and secondary pollution, and achieve cost saving, uniform thickness, and reduced dosage.

Active Publication Date: 2018-04-06
YANGZHOUSRKLE INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the characteristics of electromagnetic shielding materials in my country are mainly characterized by relatively low absorption rate and relatively single protective function, which cannot effectively control the reflection of electromagnetic waves and are prone to secondary pollution.

Method used

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  • Preparation method for electromagnetic shielding PP thin film
  • Preparation method for electromagnetic shielding PP thin film

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 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.

[0032] Table 1:

[0033] name

model

Manufacturer

vacuum oven

XMTD-8222

Shanghai Jinghong Experimental Equipment Co., Ltd.

electronic analytical balance

FA2004

Shanghai Precision Scientific Instrument Co., Ltd.

Vacuum Laminator

Y-001 series

Zhengzhou Craftsman Machinery Equipment Co., Ltd.

Vector Network Analyzer

N5242A

Shenzhen Shengteng Instrument Co., Ltd.

Electronic Fabric Strength Tester

YG065

Laizhou Electronic Instrument Co., Ltd.

Melt blown experimental production line

MBCF-I

Hebei Gu'an Shenbao Filter Factory

[0034] The preparation method of electromagnetic shielding PP film of the present invention carries out successively according to the following steps:

[0035] The first step is to use PP as ...

Embodiment 2

[0058] A preparation method of electromagnetic shielding PP film, the steps are as follows:

[0059] (1) Using polypropylene as raw material, PP non-woven fabrics are prepared by melt-blown spinning technology; the process parameters for preparing PP non-woven fabrics by melt-blown spinning technology are: the set temperature of the screw extruder is 175°C in zone 1, Zone 2 is 215°C, Zone 3 is 225°C, Zone 4 is 235°C, Zone 5 is 230°C; the temperature of the meltblown die head is 230°C; the temperature of the metering pump is 230°C, and the speed of the metering pump is 230 r / min; drafting hot air The wind temperature and wind pressure are 230 ℃ and 8 MPa respectively; the moving speed of the net curtain is 1.6 m / min;

[0060] (2) Add carboxylated multi-walled carbon nanotubes to xylene to prepare a mixed solution with a concentration of 0.1 mg / mL, put the mixed solution into an ultrasonic cleaner, and ultrasonically oscillate in a water bath at 50 °C for 90 min , to obtain a d...

Embodiment 3

[0064] A preparation method of electromagnetic shielding PP film, the steps are as follows:

[0065] (1) Using polypropylene as raw material, PP non-woven fabrics are prepared by melt-blown spinning technology; the process parameters for preparing PP non-woven fabrics by melt-blown spinning technology are: the set temperature of the screw extruder is 180°C in zone 1, Zone 2 is 220°C, Zone 3 is 230°C, Zone 4 is 245°C, Zone 5 is 235°C; the temperature of the meltblown die head is 233°C; the temperature of the metering pump is 240°C, and the speed of the metering pump is 233 r / min; drafting hot air The wind temperature and wind pressure are 240°C and 10 MPa respectively; the moving speed of the net curtain is 2.0 m / min;

[0066] (2) Add carboxylated multi-walled carbon nanotubes to benzene to prepare a mixed solution. The concentration of the mixed solution is 1.6 mg / mL. Put the mixed solution into an ultrasonic cleaner and ultrasonically shake it in a water bath at 70 °C for 80 ...

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Abstract

The invention discloses a preparation method for an electromagnetic shielding PP thin film. The preparation method for the electromagnetic shielding PP thin film comprises the following steps in sequence that 1, PP raw materials are made to a PP melt-blown nonwoven fabric by a melt-blown spinning technology; 2, a PP composite conductive fiber net modified by carboxylic multi-walled carbon nanotubes (c-MWCNTs) is prepared; and 3, the electromagnetic shielding PP thin film is prepared. The preparation method for the electromagnetic shielding PP thin film uses the carboxylic multi-walled carbon nanotubes (c-MWCNTs) to modify the PP melt-blown nonwoven fabric so as to prepare and obtain the PP composite conductive fiber net, and the PP composite conductive fiber net and a PP film are subjectedto hot pressing combination to prepare the high-performance PP electromagnetic shielding thin film; and the PP composite film is high in shielding effectiveness, and is suitable for being applied tothe field of thin films.

Description

technical field [0001] The invention relates to the field of material preparation, in particular to a method for preparing an electromagnetic shielding PP film. Background technique [0002] Since the beginning of this century, with the rapid development of electronic information technology and the wide application of wireless technology, the problem of electromagnetic radiation has become more and more prominent. Electromagnetic waves have become a new type of pollution source, flooding our living environment, not only endangering human health, but also may cause electromagnetic interference, electromagnetic leakage and other problems. 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] At present, the characteristics of electromagnetic shielding m...

Claims

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Application Information

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IPC IPC(8): B29D7/01
CPCB29D7/01
Inventor 石素宇闫新王利娜崔彭超赵兴春王怡丰
Owner YANGZHOUSRKLE INDAL
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