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Fabric coating finishing agent with electromagnetic shielding function and preparation method thereof

Inactive Publication Date: 2011-08-17
QUANZHOU JIANENG MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such as: (1) the cost of metal fillers used (such as powdery, flake or fabric-like nickel, copper, silver, etc.) is high and the manufacturing process is complicated; (2) the prepared fabric coating has poor electromagnetic shielding and absorption effect ; (3) metal powder is easy to migrate on the surface, polluting the environment
(4) The single-component conductive coating agent only gives the fabric coating a narrow frequency of electromagnetic shielding and low performance
[0007] In the existing research reports, there is no use of inorganic-organic composite nano-ferric oxide / polypyrrole composite materials to prepare fabric coating finishing agents with high electromagnetic shielding stealth performance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Fabric coating finishing agent with electromagnetic shielding function and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Step 1: Soak 7g of fabric in 10g of diethanolamine solution, then add 10g of FeCl 3 ·6H 2 O, FeCl 2 4H 2 O (the ratio is 2:1), add 50mL of distilled water, stir for 15min under the protection of nitrogen, add dropwise 10mL of 0.5mol / L NH 4 OH solution, adjust pH=7, ultrasonic dispersion, continue to react for 1h, then magnetically separate, wash with 1g of 1mol / L sodium oleate for several times, then take out the fabric and dry it at 60°C for 2h to obtain product A.

[0033] Step 2: Soak the fabric A loaded with 1g of ferric oxide nanoparticles in 40mL of deionized aqueous solution of pyrrole monomer after drying, and drop 10g of FeCl 3 The solution was continuously stirred for 2 h under the protection of nitrogen, washed several times with water and absolute ethanol, and dried at 40° C. for 12 h for later use to obtain product B.

[0034] Step 3: Take the fabric B loaded with 40.7g of nano-ferric oxide / polypyrrole conductive composite material, mix it with 38.4g of...

Embodiment 2

[0037] Step 1: Soak 15g of fabric in 14.5g of polyethylene glycol solution, then add 18g of FeCl 3 ·6H 2 O, FeCl 2 4H 2 O (ratio 2.2:1), add 60mL of distilled water, stir for 20min under nitrogen protection, add dropwise 15mL of 1mol / L NH 4 OH solution, adjust pH=7.5, ultrasonic dispersion, continue to react for 1.5h, then magnetically separate, wash with 5mL of 1mol / L sodium oleate for several times, then take out the fabric and dry it at 60°C for 2h to obtain product A .

[0038] Step 2: Soak the fabric A loaded with 5g of ferric oxide nanoparticles in 45mL of deionized aqueous solution of pyrrole monomer after drying, and drop 52g of FeCl 3 The solution was continuously stirred for 4 h under the protection of nitrogen, washed several times with water and absolute ethanol, and dried at 40° C. for 12 to obtain product B.

[0039] Step 3: Mix the fabric B loaded with 47.6g of nano-ferric oxide / polypyrrole conductive composite material with 51.2g of water-based polyurethan...

Embodiment 3

[0042] Step 1: Soak 24g of fabric in 22g of Decyltrimethylammonium bromide solution, then add 26.8g of FeCl 3 ·6H 2 O, FeCl 2 4H 2 O (ratio 2.7:1), add 65mL of distilled water, stir for 30min under nitrogen protection, add dropwise 20mL of 2.5mol / L NH 4 OH solution, adjust pH=8, ultrasonic dispersion, continue to react for 2h, then magnetically separate, wash with 10mL of 5mol / L sodium oleate for several times, then take out the fabric and dry it at 60°C for 2h to obtain product A.

[0043] Step 2: Soak the fabric A loaded with 13.6g ferric oxide nanoparticles in the deionized aqueous solution of 54g pyrrole monomer after drying, drop 70g of FeCl 3 The solution was continuously stirred for 4 h under the protection of nitrogen, washed several times with water and absolute ethanol, and dried at 50° C. for 18 h for later use to obtain product B.

[0044] Step 3: Mix the fabric B loaded with 59.2g of nanometer ferric oxide / polypyrrole conductive composite material with 64.6g o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention aims to provide a fabric coating finishing agent with electromagnetic shielding function and a preparation method thereof. The method comprises the following steps: preparing fabric supported by nano ferroferric oxide particles by an in-situ chemical method; synthesizing nano ferroferric oxide / polypyrrole composite material by an emulsification and oxidation method; and adding matrix resin, auxiliaries, film forming auxiliary and the like to synthesize the fabric coating finishing agent with electromagnetic shielding function. The fabric coating finishing agent has relatively high electric conductivity and magnetic conductivity, relatively high electromagnetic shielding absorption performance and relatively wide shielding frequency band; by coating the fabric coating finishing agent on fabric, a relatively good electromagnetic wave shielding and hiding effect is realized, and pollution of electromagnetic wave radiation is reduced as well; the fabric coating finishing agent has good handfeel smoothness, good anti-wrinkle performance and good antistatic, anti-corrosion and weather resistant effect, and is an environment-friendly product; and moreover, the process is simple and convenient, the production cost is relatively low, and the product performance is excellent.

Description

technical field [0001] The invention relates to a fabric coating finishing agent, in particular to a nano-ferric oxide / polypyrrole composite material as the main component, which is loaded on a fabric to obtain a fabric coating finishing agent with electromagnetic shielding stealth function and a preparation method thereof . Background technique [0002] With the development of science and technology, electromagnetic radiation has a greater impact on people's life and work. At the airport, planes were delayed due to electromagnetic wave interference; in hospitals, mobile phones often interfere with the normal operation of various electronic medical equipment; the popularity of computers has led to frequent occurrence of computer diseases and electromagnetic allergies. In today's war, the high degree of informationization and electronicization makes the environment in which aircraft, tanks, ships, etc. live increasingly complex. It is well known that radar is one of the rel...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D06M15/37D06M11/49D06M13/46C08G73/06
Inventor 庄碧双
Owner QUANZHOU JIANENG MACHINERY MFG
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