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Preparation method for cellulose graphene composite filament yarn

A graphene composite, cellulose technology, applied in the manufacture of artificial filaments, conductive/antistatic filaments in cellulose solution, etc., can solve the problem of long, usually 2-48 hours, even up to 120 hours, limited function The application and development of sexual fibers, the pressure resistance of spinnerets and the effect of drafting, etc., achieve the effects of excellent antistatic properties, good bonding firmness, and excellent antibacterial properties.

Active Publication Date: 2019-01-25
龙丝(上海)新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology describes methods for making high-strength fibers by combining different materials together into one molecule called nanocomposite particles or nanoplatelets (NPs). These NPs act like tiny crystals throughout their structure, allowing them to hold more space than what they were before being mixed together. By doing this mixing we create stronger polymer structures compared to existing composites made up entirely of individual components alone. Additionally, it suggests that these NPNs could improve certain physical properties such as electric conductance, resistive against static discharge, anti-bacteria property, etc., while reducing costs associated therewith. Overall, this method provides technical benefits over current technologies including conventional processes involving multiple steps, complex apparatuses, energy consumption, environmental concerns, and expensive manufacturing techniques.

Problems solved by technology

This patented technical problem addressed in this patent relates to improves upon existing composites containing lignin without adding anionicsulfate group element while maintaining their dispersibility and reduced environmental concerns associated with these chemically bonded components.

Method used

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  • Preparation method for cellulose graphene composite filament yarn
  • Preparation method for cellulose graphene composite filament yarn
  • Preparation method for cellulose graphene composite filament yarn

Examples

Experimental program
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Effect test

Embodiment 1

[0050] 1. Preparation of 1,4-bis[1-(3-methylimidazolium)]butyl dichloride:

[0051] Under nitrogen protection at 80°C, slowly drop 1.2mol N-methylimidazole into 1mol 1,4-dichlorobutane, after the dropwise addition, reflux for 72 hours to complete the reaction, and cool the reaction solution to room temperature to obtain The product was washed with ether to remove unreacted raw materials, and a white solid was obtained, which was bis-1,4-bis[1-(3-methylimidazole)]butyl dichloride (HPLC purity was 98.8%, yield 88 %).

[0052] Two, the preparation of 1,4-bis[1-(3-methylimidazole)]butyl diperchlorate:

[0053] Dissolve 1 mol of 1,4-bis[1-(3-methylimidazolium)]butyl dichloride and 1.2 mol of lithium perchlorate in 1L of water, then stir and react at 80°C for 36 hours, then cool to room temperature, Stirring was continued at room temperature for 12 hours, the reaction solution was dispersed into an equal volume of chloroform, separated, the chloroform phase was washed with water u...

Embodiment 2

[0071] The only difference between this embodiment and Example 1 is: 0.5 parts by mass of silicon oxide (particle diameter is about 100nm), 0.07 parts by mass of graphene oxide and 9.43 parts by mass of cotton pulp (cellulose content is 99%, polymerized degree is 600) after mixing evenly, add 100 parts by mass, 90wt% in the ionic liquid aqueous solution, and the remaining contents are all the same as described in Example 1.

[0072] After testing, the cellulose graphene composite filament prepared in this embodiment has a breaking strength of about 3.6cN / dtex when the single filament fineness is 1.65dtex; and experiments show that: under the same conditions, using 90wt% 1-Butyl-3-methylimidazolium chloride, 1,4-bis[1-(3-methylimidazolium)]butyl dichloride or 1,4-bis[1-(3-methylimidazolium) )] When a single ionic liquid aqueous solution of butyl diperchlorate dissolves cotton pulp, graphene and cotton pulp, it needs to be stirred at 110-130°C for 3-5 hours to obtain a stable an...

Embodiment 3

[0075] The difference between this embodiment and Example 1 is only: 0.5 mass parts silicon oxide (particle diameter is about 100nm), 0.09 mass parts graphene and 9.41 mass parts cotton pulp (cellulose content is 99%, polymerization degree 600) after mixing evenly, add 100 parts by mass, 90 wt% of the ionic liquid aqueous solution, and the remaining contents are the same as those described in Example 1.

[0076] After testing, the cellulose-graphene composite filament prepared in this embodiment has a breaking strength of about 3.8cN / dtex when the monofilament fineness is 1.65dtex; and experiments show that: under the same conditions, using 90wt% 1-Butyl-3-methylimidazolium chloride, 1,4-bis[1-(3-methylimidazolium)]butyl dichloride or 1,4-bis[1-(3-methylimidazolium) )] When a single ionic liquid aqueous solution of butyl diperchlorate dissolves cotton pulp, graphene and cotton pulp, it needs to be stirred at 110-130°C for 3-5 hours to obtain a stable and uniform spinning stock...

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Abstract

The invention discloses a preparation method for cellulose graphene composite filament yarn. The preparation method comprises the steps that a) a dispersing agent, graphene oxide and cellulose are mixed and then are dissolved in an ionic liquid aqueous solution so as to prepare a mixed spinning solution, wherein the addition amount of the graphene oxide is 0.5-1 wt% of the addition amount of the cellulose; and b) the obtained mixed spinning solution is subjected to filtration, spinning, solidifying, stretching, washing, bleaching, oiling, drying and winding so as to obtain the cellulose graphene composite filament yarn, wherein ionic liquid is obtained by mixing 1-butyl-3-methylimidazolium chloride, 1,4-bis[1-(3-methylimidazole)]butyl dichloride and 1,4-bis[1-(3-methylimidazole)] butyl biperchlorate. According to the preparation method, experiments show that the prepared cellulose graphene composite filament yarn has excellent mechanical properties, conductivity, anti-static property and stability, the preparation process is simple, the cost is low, the environment is protected, and pollution is avoided.

Description

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Claims

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Application Information

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Owner 龙丝(上海)新材料科技有限公司
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