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Wave-absorption and long-service life composite paper and preparation method thereof

A composite paper and life-span technology, applied in the field of composite paper, can solve the problems of easy peeling off of the wave-absorbing coating, short service life, heavy specific gravity, etc.

Active Publication Date: 2015-08-12
LONGPONT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After it is coated on materials that need to be invisible, such as drones, missiles, warships, etc., since the particles with wave-absorbing properties in the wave-absorbing coating are exposed to the air, they are easily corroded by oxygen in the air. The coating has defects such as easy peeling, high specific gravity, and short service life

Method used

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preparation example Construction

[0027] The embodiment of the present invention also provides a method for preparing the above-mentioned wavelength-absorbing life-span composite paper, comprising the following steps:

[0028] Step S01: Prepare raw materials according to the following mass percentages: 20% to 80% of structural fibers and 20% to 80% of bonding fibers, wherein the bonding fibers contain wave-absorbing additives, and the wave-absorbing additives account for 100% of the mass of bonding fibers Mineral content is 0.1-20%.

[0029] Step S02: Disentangle the structural fibers to prepare a first slurry with a mass concentration of the structural fibers of 0.01%-8%.

[0030] Step S03: Disentangle the bonding fibers to prepare a second slurry with a mass concentration of bonding fibers of 0.2% to 10%.

[0031] Step S04: Mix the first slurry and the second slurry, and make blank paper.

[0032] Step S05: Wet the rough paper with water to keep the dryness at 65%-85%.

[0033] Step S06: Hot rolling the r...

Embodiment 1

[0046] Raw materials are prepared according to the following mass percentages: 20% of polym-phenylene isophthalamide fiber and 80% of polym-phenylene isophthalamide precipitated fiber, wherein polym-phenylene isophthalamide The diamine fibrid contains silicon carbide, and the silicon carbide accounts for 15% by mass of the polym-phenylene isophthalamide fibrid.

[0047]The preparation process of the polym-phenylene isophthalamide fibrid is as follows: After cooling the m-phenylenediamine to 15°C, mix with isophthaloyl dichloride at a ratio of 1:1 between m-phenylenediamine and isophthaloyl chloride. The molar ratio is polymerized in N,N-dimethylacetamide, and silicon carbide is added at the same time to obtain a polym-phenylene isophthalamide polymerization solution. Mix N,N-dimethylacetamide and sodium chloride aqueous solution to obtain a precipitating solvent. After cooling the poly-m-phenylene isophthalamide polymer solution to 5°C, the precipitation solvent and the poly-...

Embodiment 2

[0050] Raw materials are prepared according to the following mass percentages: 80% of polym-phenylene isophthalamide fiber and 20% of polym-phenylene isophthalamide precipitated fiber, wherein, polym-phenylene isophthalamide The diamine precipitating fiber contains graphite, and the graphite accounts for 10% by mass of the polym-phenylene isophthalamide precipitating fiber.

[0051] The preparation process of the polym-phenylene isophthalamide fibrid is as follows: after cooling the m-phenylenediamine to 10°C, mix with isophthaloyl dichloride in the ratio of m-phenylenediamine and isophthaloyl chloride 1:1.05 The molar ratio is polymerized in N,N-dimethylacetamide, and graphite is added at the same time to obtain a polym-phenylene isophthalamide polymerization solution. Mix N,N-dimethylacetamide with an aqueous solution of calcium chloride to obtain a precipitation solvent. After cooling the polym-phenylene isophthalamide polymerization solution to 20°C, the precipitation sol...

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Abstract

The present invention discloses wave-absorption and long-service life composite paper, which comprises, by mass, 20-80% of structure fibers and 20-80% of adhesion fibers, wherein the adhesion fibers contain 0.1-20% by mass of a wave-absorption additive. The present invention further discloses a wave-absorption and long-service life composite paper preparation method. According to the wave-absorption and long-service life composite paper of the present invention, the wave-absorption additive having the wave-absorption performance is added to the adhesion fibers so as to uniformly disperse the additive in the composite paper, such that peeling resistance under the external force effect is provided; the structure fibers are added and have characteristics of fire retardation, high temperature resistance, and effectively isolation of corrosion of oxygen in air on the wave-absorption additive so as to prolong the service life of the composite paper; and the raw materials are the lightweight materials, such that the specific gravity of the composite paper is small.

Description

technical field [0001] The invention belongs to the technical field of composite paper, and in particular relates to a wavelength-absorbing life-span composite paper and a preparation method thereof. Background technique [0002] At present, the absorbing stealth material is realized by coating the absorbing coating on the surface. The wave-absorbing coating is obtained by mixing particles with wave-absorbing properties and adhesives with bonding effects. After it is coated on materials that need to be invisible, such as drones, missiles, warships, etc., since the particles with wave-absorbing properties in the wave-absorbing coating are exposed to the air, they are easily corroded by oxygen in the air. The coating has defects such as easy peeling, high specific gravity, and short service life. Contents of the invention [0003] The purpose of the embodiments of the present invention is to overcome the above-mentioned shortcomings of the prior art, and provide a waveleng...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H13/26D21H13/24D21H17/67D21H21/14
Inventor 林德苗李慧陶琳肖东华曾一兵张永生
Owner LONGPONT
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