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Graphene and nylon flame-retardant fibers and preparation method thereof

A flame retardant fiber, olefin nylon technology, applied in the field of graphene nylon flame retardant fiber and its preparation, can solve the problem of increasing the viscosity of molten nylon masterbatch, affecting fiber strength, elongation, elastic modulus and air permeability, limiting graphite problems such as the amount of alkene added to achieve the effect of improving fluidity and reducing viscosity

Inactive Publication Date: 2018-06-12
余姚帕吉索新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When preparing graphene nylon fiber, the added graphene will reduce the processing fluidity of nylon masterbatch, increase the viscosity of molten nylon masterbatch, and limit the amount of graphene added.
[0005] When preparing graphene nylon fibers with excellent flame retardant properties, it is generally necessary to add additional flame retardants, but the addition of flame retardants will affect the strength, elongation, elastic modulus, and air permeability of the fibers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1 A kind of graphene nylon flame-retardant fiber and preparation method thereof

[0049] Include the following steps:

[0050] (1) Preparation of silica-graphene composite porous material

[0051] Include the following steps:

[0052] Graphene with a particle size of 400 nanometers is added to the sodium silicate aqueous solution with a concentration of 35% according to 8% of the mass of the dry silicic acid produced, and sodium bicarbonate is added, and the temperature is raised at a speed of 1°C / min after fully stirring for 1 hour Keep warm at 55°C, and perform ultrasonication for 2 hours at the same time, then slowly add dilute sulfuric acid while stirring at a rate of 42 rpm, and adjust the pH to 5 until no flocculent precipitation and bubbles are generated; after filtration, graphene silicon is obtained. Acid gel substance, after dehydration and drying, raise the temperature to 155°C within 35 minutes, hold the temperature for 4 hours until there is no...

Embodiment 2

[0083] Embodiment 2 A kind of graphene nylon flame-retardant fiber and preparation method thereof

[0084] Include the following steps:

[0085] (1) Preparation of silica-graphene composite porous material

[0086] Include the following steps:

[0087] Graphene with a particle size of 500 nanometers is added to the sodium silicate aqueous solution with a concentration of 38% according to 10% of the mass of the dry silicic acid produced, and sodium bicarbonate is added, and the temperature is raised at a speed of 1.3°C / min after fully stirring for 2 hours Keep warm at 60°C while ultrasonically ultrasonicating for 3 hours, then slowly add dilute sulfuric acid while stirring at a rate of 50 rpm, and adjust the pH to 6 until no flocculent precipitation and bubbles are generated; after filtration, graphene silicon Acid gel substance, after dehydration and drying, raise the temperature to 162°C within 38 minutes, hold the temperature for 4-5 hours until there is no weight loss, an...

Embodiment 3

[0118] Embodiment 3 A kind of graphene nylon flame-retardant fiber and preparation method thereof

[0119] Include the following steps:

[0120] (1) Preparation of silica-graphene composite porous material

[0121] Include the following steps:

[0122]Graphene with a particle size of 600 nanometers is added to the sodium silicate aqueous solution with a concentration of 40% according to 11% of the mass of the dry silicic acid produced, and sodium bicarbonate is added, and after fully stirring for 1-2 hours, it is heated at a temperature of 1.5°C / min. Raise the temperature to 65°C and keep it warm while ultrasonically ultrasonicating for 3 hours, then slowly add dilute sulfuric acid while stirring at a rate of 50 rpm, and adjust the pH to 5 until no flocculent precipitation and bubbles are produced; graphite is obtained after filtration Alkene silicic acid gel substance, after dehydration and drying, raise the temperature to 165°C within 40 minutes, hold the temperature for 5...

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PUM

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Abstract

The invention provides graphene and nylon flame-retardant fibers. The graphene content of the fibers is 3.5-4.5% and the limiting oxygen index is 35.5-36%. The invention also provides a preparation method of the graphene and nylon flame-retardant fibers. The preparation method comprises the following steps: preparing a silicon dioxide-graphene compound porous material, preparing a graphene dispersed suspension, preparing flame-retardant functional master batch, and performing melt spinning, cooling, forming, drawing, coiling and thermoforming. The preparation method overcomes the influence ofthe added graphene on the viscosity and liquidity of the nylon master batch, reduces the viscosity of the molten nylon master batch and improves the liquidity of the molten nylon master batch. The graphene and nylon fibers prepared the preparation method is characterized in that the graphene content is 3.5-4.5%, the dry breaking strength is 60-65N / tex, the breaking elongation is 18-24%, the Youngmodulus is 2.3-2.8Gpa, and the limiting oxygen index is as high as 35.5-36%.

Description

technical field [0001] The invention relates to a nylon fiber, in particular to a graphene nylon flame-retardant fiber and a preparation method thereof, belonging to the technical field of textiles. Background technique [0002] The most prominent advantage of nylon, that is, polyamide fiber, is that its wear resistance is higher than other fibers, 10 times higher than that of cotton. Adding some nylon to blended fabrics can greatly improve its wear resistance. [0003] Graphene is a two-dimensional crystal that is stripped from graphite and composed of carbon atoms with only one atomic thickness. performance. [0004] When preparing graphene nylon fibers, the added graphene will reduce the processing fluidity of the nylon masterbatch, increase the viscosity of the molten nylon masterbatch, and limit the amount of graphene added. [0005] When preparing graphene nylon fibers with excellent flame retardant properties, it is generally necessary to add additional flame reta...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/07
Inventor 闫石
Owner 余姚帕吉索新材料科技有限公司
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