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Multiple dispersed phase flame retardant shear thickening fluid, its preparation method and application thereof

A disperse phase, flame retardant technology, applied in the field of nanomaterials, can solve the problems of limited application range of shear thickening liquid, single function of monodisperse phase shear thickening liquid, unsuitable for ultra-high shear stress range, etc. Achieve the effect of light weight, low production cost and low cost

Active Publication Date: 2012-10-17
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the single function of the monodisperse phase shear thickening fluid, it is not suitable for harsh environments such as ultra-high shear stress range and fire scene, which greatly limits the application range of shear thickening fluid

Method used

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  • Multiple dispersed phase flame retardant shear thickening fluid, its preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Pour 100 parts by weight of polyethylene glycol with a molecular weight of 200 into the reaction vessel, raise the temperature to 30°C, and then add 50 parts by weight of hard nano-spherical silica particles, disperse at 30°C for 50 minutes, and then add 2 parts by weight of carbon black, while adding 10 parts by weight of polyethylene glycol with a molecular weight of 400, continued to disperse for 1 hour under normal pressure to obtain a multi-component dispersed phase flame-retardant liquid with significant shear thickening properties, and the initial viscosity was 178Pa·S / 25℃, the flame retardant level has reached UL-94V-0 level.

[0024] Dilute the volume ratio of the shear thickening liquid to the fiber fabric at a ratio of 1:3 to prepare a shear thickening impregnation liquid, and use ultrasonic technology to make the fiber fabric fully absorb the shear thickening impregnation liquid, and dry and evaporate the solvent ethanol after impregnation. That is to say, i...

Embodiment 2

[0026] Pour 100 parts by weight of polyethylene glycol with a molecular weight of 400 into the reaction vessel, raise the temperature to 35°C, and then add 60 parts by weight of hard nano-spherical silica particles, disperse at 35°C for 50 minutes, and then add 5 parts by weight of carbon nanotubes, while adding 15 parts by weight of polyethylene glycol with a molecular weight of 200, continue to disperse for 2 hours under normal pressure, and obtain a liquid with significant shear thickening properties of a multi-component dispersed phase, with an initial viscosity of 1510Pa ·S / 25℃, the flame retardant level has reached UL-94V-0 level.

[0027] The prepared liquid with shear thickening properties is slowly filled in batches into the prepared bag-shaped fiber sealing fabric according to the proportion, and the light-duty flexible soft protection with flame-retardant function is prepared by filling hot sewing technology Material.

Embodiment 3

[0029] 95 parts by weight of polyethylene glycol with a molecular weight of 200 and 5 parts by weight of a molecular weight of 10,000 are poured into the reaction vessel, the temperature is raised to 45°C, and then 55 parts by weight of hard nano-spherical silica particles are added, and at a temperature of 45°C After dispersing for 50 minutes, add 5 parts by weight of graphene, and simultaneously add 20 parts by weight of polyethylene glycol with a molecular weight of 200, and continue to disperse for 4 hours under normal pressure to obtain a multi-component dispersed phase liquid with significant shear thickening properties , the initial viscosity is 15400Pa·S / 25℃, and the flame retardant level reaches UL-94V-0 level.

[0030] Dilute the volume ratio of the shear thickening solution to the fiber fabric at a ratio of 1:7 to prepare a shear thickening impregnation solution, and make the fiber fabric fully absorb the shear thickening impregnation solution through spraying techno...

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Abstract

The invention relates to a multiple dispersed phase flame retardant shear thickening fluid, its preparation method and an application thereof, and belongs to the technical field of nano materials. The preparation method of the multiple dispersed phase flame retardant shear thickening fluid comprises the following steps of: firstly, respectively fusing 100 parts by weight of a disperse medium at the temperature of 30-60 DEG C, adding 40-70 parts by weight of hard spherical nanoparticles, dispersing at the temperature of 30-60 DEG C for 40-70 minutes, adding 1-10 parts by weight of a carbon material and simultaneously adding 10-20 parts by weight of a disperse medium, and continuously dispersing at normal pressure for 1-4 hours, so as to obtain a multiple dispersed phase fluid with a substantial shear thickening characteristic. The viscosity is 100-100000 Pa.S / 25 DEG C and the flame retardancy reaches UL-94V-0 level. By reasonable design and application of the nanometer effect of the hard spherical nanoparticles and characteristics of the carbon material, the multiple dispersed phase flame retardant fluid with the substantial shear thickening characteristic is prepared. Through an ultrasonic technology, a spraying technology, a sizing technology, loading and thermal sewing technologies, the multiple dispersed phase flame retardant shear thickening fluid can be used for impregnation composition, coating composition or embedding composition of fabrics, so as to prepare a light-duty flexible soft protection material with a flame retardant function.

Description

Technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to the preparation and application of a functional non-Newtonian fluid. Specifically, it relates to a multi-component dispersed-phase flame-retardant shear thickening liquid composed of hard nano-spherical particles and carbon materials, as well as its preparation method and application. Background technique [0002] Shear thickening fluid (STF) is composed of dispersed phase particles and dispersion medium. It is a reversible fluid with non-Newtonian mechanical behavior. The viscosity increases sharply, showing solid behavior; when the external force is removed, it can return to the dispersed colloid form under the equilibrium state. There have been related reports on the preparation technology, characterization and application of shear thickening fluid. For example, Chinese patent, CN200810020141.4 Gong Xinglong et al. discloses a shear thickening liquid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/79D06M15/233D06M15/263D06M11/74
Inventor 俞科静钱坤曹海建
Owner JIANGNAN UNIV
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