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Graphene modified spandex fiber as well as preparation method and application thereof

A technology of graphene modification and spandex fiber, which is applied in the direction of fiber chemical characteristics, rayon manufacturing, conductive/antistatic filament manufacturing, etc., can solve the problem of low elongation at break of spandex fiber, achieve saving raw material components, improve Comprehensive performance and high stability

Active Publication Date: 2017-11-21
SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The first object of the present invention is to provide a kind of preparation method of the spandex fiber of graphene modification, described preparation method has solved the problem that the elongation at break of the spandex fiber of graphene modification gained is low

Method used

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  • Graphene modified spandex fiber as well as preparation method and application thereof
  • Graphene modified spandex fiber as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] 1. Preparation of chain extension solution: Mix 2 g of graphene C and 20 g of ethylenediamine in DMF to obtain a chain extension solution with a total mass percentage concentration of graphene C and ethylenediamine of 4.0%.

[0065] 2. Preparation of prepolymer: Toluene diisocyanate and polytetrahydrofuran diol (PTMG-2000) are mixed at a molar ratio of 1.5:1, and the total mass of the two is 2kg, then 1g of graphene C is added, and then heated to 60°C Next, pre-polymerization is performed. After the pre-polymerization is completed, DMAC solvent is added to the pre-polymer to prepare a pre-polymer solution with a concentration of 40% by mass of the pre-polymer.

[0066] 3. the chain extension solution in step 1 and the prepolymer solution in step 2 are mixed, carry out chain extension reaction, make fiber-forming polymer solution, its mass percent concentration is 33% (being the solid content of fiber-forming polymer ).

[0067] 4. Preparation of additive slurry: 7 g of...

Embodiment 2

[0070] The difference from Example 1 is that the ratio of graphene C added in three steps is different, as follows:

[0071] 1. Preparation of chain extension solution: Mix 4 g of graphene C and 20 g of ethylenediamine in DMF to obtain a chain extension solution with a total mass percentage concentration of graphene C and ethylenediamine of 4.0%.

[0072] 2. Preparation of prepolymer: Mix toluene diisocyanate and polytetrahydrofuran diol (PTMG-2000) at a molar ratio of 1.5:1, and the total mass of the two is 2kg, then add 3g of graphene C, and then heat to 60°C Next, pre-polymerization is performed. After the pre-polymerization is completed, DMAC solvent is added to the prepolymer to prepare a prepolymer solution with a concentration of 40% by mass.

[0073] 3. the chain extension solution in step 1 and the prepolymer solution in step 2 are mixed, carry out chain extension reaction, make fiber-forming polymer solution, its mass percent concentration is 33% (being the solid con...

Embodiment 3

[0077] The difference from Example 1 is that the ratio of graphene C added in three steps is different, as follows:

[0078] 1. Preparation of chain extension solution: Mix 3 g of graphene C and 20 g of ethylenediamine in DMF to obtain a chain extension solution with a total mass percentage concentration of graphene C and ethylenediamine of 4.0%.

[0079]2. Preparation of prepolymer: Mix toluene diisocyanate and polytetrahydrofuran diol (PTMG-2000) at a molar ratio of 1.5:1, and the total mass of the two is 2kg, then add 2g of graphene C, and then heat to 60°C Next, pre-polymerization is performed. After the pre-polymerization is completed, DMAC solvent is added to the prepolymer to prepare a prepolymer solution with a concentration of 40% by mass.

[0080] 3. the chain extension solution in step 1 and the prepolymer solution in step 2 are mixed, carry out chain extension reaction, make fiber-forming polymer solution, its mass percent concentration is 33% (being the solid cont...

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Abstract

The invention provides graphene modified spandex fiber as well as a preparation method and application thereof. The preparation method comprises the following steps: uniformly mixing a first part of graphene material and a chain extender in an organic solvent to obtain a chain extension solution; mixing diisocyanate, polyether glycol and a second part of graphene material for a pre-polymerization reaction; adding an organic solvent for dilution to obtain a prepolymer solution; mixing the chain extension solution with the prepolymer solution for chain extension to obtain a polymer solution; uniformly mixing a third part of graphene material with a dispersing agent in an organic solvent, adding the mixture into the polymer solution, curing and spinning, wherein the weight ratio of the graphene materials added in the three steps is (20 to 40):(10 to 30):(30 to 70). Compared with traditional spandex fiber, the spandex fiber provided by the invention has the advantages of high elongation at break, strong breaking strength, high electrical conductivity, high antibacterial rate and the like, and can be used for making underwear, ski suits, sport suits, swimming suits, welts, conveying belts, medical fabric, space suit, and the like.

Description

technical field [0001] The invention relates to the technical field of chemical engineering, in particular to a graphene-modified spandex fiber and a preparation method and application thereof. Background technique [0002] Spandex is a kind of elastic fiber, its scientific name is polyurethane fiber (PU), which has the characteristics of excellent elasticity, high strength, good chemical resistance, oil resistance, sweat resistance, no moth, no mildew, no yellowing in the sun, etc. Spandex is used to make elastic braids or textiles, such as various underwear, ski suits, sportswear, swimwear, socks, conveyor belts, medical fabrics, space suits, etc. [0003] Graphene is a honeycomb planar film formed by sp2 hybridization of carbon atoms. It is a quasi-two-dimensional material with only one atomic layer thickness. Due to its very good strength, flexibility, electrical conductivity, thermal conductivity, Optical properties have been greatly developed in the fields of physics,...

Claims

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Application Information

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IPC IPC(8): D01F6/94D01F1/09D01F1/10C08G18/66C08G18/48C08G18/32C08G18/10
CPCC08G18/10C08G18/4825C08G18/4854D01F1/09D01F1/103D01F6/94C08G18/3228C08G18/3206C08G18/324
Inventor 唐地源苑亚楠吕冬生王双成许日鹏宋现芬
Owner SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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