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A skin-core structural fiber with both infrared and radar stealth and its preparation method and application

A radar stealth, skin-core structure technology, applied in fiber processing, fiber chemical characteristics, melt spinning, etc., can solve the problems of complex preparation process and single final product forming method, achieve convenient use, good electromagnetic wave absorption performance, compensation single function effect

Active Publication Date: 2022-03-11
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Patent application CN101870861A discloses an infrared magnetic phase change material and its preparation method, which describes a method for preparing an infrared magnetic phase change material using paraffin, ferrite, polyaniline and other materials, but the patent application has complicated preparation procedures , The disadvantage of a single molding method for the final product

Method used

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  • A skin-core structural fiber with both infrared and radar stealth and its preparation method and application
  • A skin-core structural fiber with both infrared and radar stealth and its preparation method and application
  • A skin-core structural fiber with both infrared and radar stealth and its preparation method and application

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Effect test

Embodiment 1

[0035] A sheath-core structure fiber with both infrared and radar stealth, comprising the following raw materials in parts by weight: 10 parts of paraffin wax, 0.7-1.5 parts of electromagnetic wave absorber, and 1 part of high molecular polymer.

[0036] The above-mentioned electromagnetic wave absorber is one or more of iron ferric oxide intercalated graphene oxide, nano iron ferric oxide, and carbon black.

[0037] The above-mentioned high molecular polymer is one or more of polyethylene, polypropylene, and ethylene-vinyl acetate copolymer.

[0038] A method for preparing a skin-core structural fiber with both infrared and radar stealth, the specific steps are as follows:

[0039] (1) Melt 1000g of paraffin wax at 70°C, add 50g of ferric oxide intercalated graphene oxide and 20g of carbon black and stir well to prepare infrared and electromagnetic wave absorbing material S1.

[0040] (2) Melt 50g of polyethylene, 30g of polypropylene, and 20g of ethylene-vinyl acetate copol...

Embodiment 2

[0045] A method for preparing a skin-core structural fiber with both infrared and radar stealth, the specific steps are as follows:

[0046] (1) Melt 1000g of paraffin wax at 70°C, add 100g of nano-ferric oxide and 50g of carbon black and stir well to prepare infrared and electromagnetic wave absorbing material S1.

[0047] (2) Melt 50g of polyethylene, 30g of polypropylene, and 20g of ethylene-vinyl acetate copolymer at 130°C, then add them into the melt of S1, stir thoroughly, stir evenly, and then dry to prepare core material S2.

[0048] (3) Dissolving polyacrylonitrile in N,N-dimethylacetamide, stirring evenly and standing still for 10 h to prepare an external phase spinning solution (polyacrylonitrile solution) with a mass concentration of polyacrylonitrile of 20%.

[0049] (4) S2 is used as the core material (the core material nozzle is controlled at 140° C.), and polyacrylonitrile solution is used as the skin layer material for solution spinning to obtain fibers with a...

Embodiment 3

[0052] A method for preparing a skin-core structural fiber with both infrared and radar stealth, the specific steps are as follows:

[0053] (1) Melt 1000g of paraffin wax at 70°C, add 70g of ferric oxide intercalated graphene oxide and 30g of carbon black and stir well to prepare infrared and electromagnetic wave absorbing material S1.

[0054] (2) Melt 50g of polyethylene, 30g of polypropylene, and 20g of ethylene-vinyl acetate copolymer at 130°C, then add them into the melt of S1, stir thoroughly, and then dry them to prepare the core material S2.

[0055] (3) Dissolving polyacrylonitrile in N,N-dimethylacetamide, stirring evenly and standing still for 10 h to prepare an external phase spinning solution (polyacrylonitrile solution) with a mass concentration of polyacrylonitrile of 20%.

[0056] (4) S2 is used as the core material (the core material nozzle is controlled at 150° C.), and the polyacrylonitrile solution is used as the skin layer material for solution spinning t...

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Abstract

The invention discloses a skin-core structural fiber with both infrared and radar stealth and its preparation method and application. The skin-core structural fiber comprises the following raw materials in parts by weight: 1-5 parts of paraffin, 1-5 parts of electromagnetic wave absorber , 1 to 5 parts of high molecular polymer, polyacrylonitrile, N,N-dimethylacetamide, wherein the electromagnetic wave absorber is ferric oxide intercalated graphene oxide, nano ferric oxide, carbon black one or more of them. The invention uses the skin-core spinning technology to prepare the phase change material and the electromagnetic wave absorbing material into a fiber material with a skin-core structure, which solves the disadvantage that the stealth material only has a single infrared stealth or radar stealth, and at the same time, the fiber material has various molding methods and is easy to use .

Description

technical field [0001] The invention belongs to the technical field of material engineering, and in particular relates to a skin-core structural fiber with both infrared and radar stealth and its preparation method and application. Background technique [0002] In many military operations, detection technologies such as radar and infrared are usually used to improve target recognition capabilities, so that a single stealth technology cannot meet the demand. Therefore, the development of multifunctional stealth materials has an important market prospect. At present, multifunctional composite materials with visible light, infrared, radar and other stealth functions are a development trend and a key development goal of various countries. With the development of nanotechnology and new spinning technology, lightweight and easy-to-form fibrous multifunctional stealth materials have good application prospects. However, at present, stealth protection basically relies on coating or ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/08D01F8/06D01F1/10D01D5/08D01D5/34D04H1/46F41H3/02
CPCD01F8/08D01F8/06D01F1/10D01D5/08D01D5/34D04H1/46F41H3/02D01D1/04D01F1/106D04H1/43828D10B2321/02D10B2321/10D10B2401/00D10B2507/00
Inventor 叶伟张杏孙启龙龙啸云高强季涛
Owner NANTONG UNIVERSITY
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