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A kind of preparation method of anti-shock thickening liquid gel

An impact-resistant and liquid-resistant technology, which is applied in the preparation of materials and the preparation of impact-resistant shear-thickening liquid gels, can solve the problems of easy sedimentation and instability of shear-thickening liquids, and achieve good shear-thickening effects, Improved stability and good stability of the preparation process

Active Publication Date: 2018-08-14
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention aims at the shortcoming that the shear thickening liquid is easy to settle and is unstable, and provides a shear thickening liquid gel and a preparation method thereof

Method used

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  • A kind of preparation method of anti-shock thickening liquid gel

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Effect test

Embodiment 1

[0020] A preparation method for impact-resistant shear thickening liquid gel, comprising the steps of:

[0021] (1) Weigh 0.5g of acrylic acid, add 4.5g of β-hydroxyethyl acrylate into a 100ml beaker and stir well.

[0022] (2) Weigh 20g of STF liquid (such as polyethylene glycol suspension containing nano-silica particles), add it to the mixture of acrylic acid and β-hydroxyethyl acrylate, and stir evenly.

[0023] (3) Add 0.06g of dibenzoyl peroxide and 0.02g of N,N-dimethylaniline into the above mixture, stir evenly, and control the reaction temperature at 20°C.

[0024] (4) Stand still until the reaction mixture stops flowing, and STF gel is formed after about half an hour.

[0025] (5) A uniformly dispersed shear-thickening gel can be prepared by the above method.

Embodiment 2

[0027] A preparation method for impact-resistant shear thickening liquid gel, comprising the steps of:

[0028] (1) Weigh 0.5 g of polyethylene glycol (400) diacrylate, add 5 g of isooctyl acrylate into a 100 ml beaker and stir evenly.

[0029] (2) Weigh 20g of STF liquid (such as polyethylene glycol suspension containing nano-silica particles), add it to the mixture of acrylic acid and β-hydroxyethyl acrylate, and stir evenly.

[0030] (3) Add 0.07 g of benzoyl peroxide into the above mixture, stir evenly, and control the reaction temperature at 40°C.

[0031] (4) Stand still until the reaction mixture no longer flows to form STF gel.

[0032] (5) A uniformly dispersed shear-thickening gel can be prepared by the above method.

Embodiment 3

[0034] A preparation method for impact-resistant shear thickening liquid gel, comprising the steps of:

[0035] (1) Weigh 0.7 g of acrylic acid, 4.4 g of a mixture of equal weights of β-hydroxyethyl acrylate and isooctyl acrylate, add it into a 100 ml beaker and stir evenly.

[0036] (2) Weigh 22g of STF liquid (such as polyethylene glycol suspension containing nano-silica particles), add it to the mixture of acrylic acid and β-hydroxyethyl acrylate, and stir evenly.

[0037] (3) Add 0.06 g of azobisisobutyronitrile into the above mixture, stir evenly, and control the reaction temperature at 30°C.

[0038] (4) Stand still until the reaction mixture no longer flows to form STF gel.

[0039] (5) A uniformly dispersed shear-thickening gel can be prepared by the above method.

[0040] The schematic diagram of the STF gel structure prepared by the embodiment of the present invention is as attached figure 1 shown, from the attached figure 1 It can be seen that the shear-thickeni...

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Abstract

The invention discloses a preparation method of an impact-resistant shear thickening liquid gel, which comprises 1-10 parts by weight of acrylic acid, polyethylene glycol (400) diacrylate, polyethylene glycol (6) monomethacrylic acid Any one or several mixtures of esters; 10-15 parts by weight of any one or several mixtures of β-hydroxyethyl acrylate, isooctyl acrylate, and butyl acrylate; and 30-90 parts by weight of STF liquid Mix in a reaction vessel; add 0.15% to 2% of the total weight of the mixture to initiate the reaction, control the reaction temperature between 10 and 80°C, stir and mix evenly, and defoam; leave it to stand until the curing reaction is completed, and you can obtain Uniform and stable shear thickening gel. The shear thickening gel prepared by the invention has uniform dispersion, is not easy to settle, and has good shear thickening effect. Moreover, the preparation process of the invention has good stability and can realize industrialized production.

Description

technical field [0001] The invention relates to a preparation method of a material, in particular to a preparation method of an impact-resistant shear thickening liquid gel, and belongs to the technical field of colloidal material preparation. Background technique [0002] Shear-thickening gel is a gel material formed by in-situ compounding of shear-thickening fluid (STF fluid) and polymer gel matrix, which has the characteristics of impact energy absorption, but does not have fluidity. Shear thickening fluid (STF fluid) is a solid-liquid suspension system with high solid phase content, which usually presents a flowing liquid state, and the liquid instantly turns into a hard solid when it is impacted. Shear thickening refers to the phenomenon that the apparent viscosity increases with the increase of shear rate in non-Newtonian fluids. [0003] This kind of shear thickening gel is usually flexible and elastic. When subjected to impact force, the internal inorganic nanoparti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/28C08F220/18C08F222/20C08F220/06C08F4/40
CPCC08F4/40C08F220/18C08F220/28C08F222/20C08F220/281C08F220/1808C08F222/102C08F220/06
Inventor 钟发春罗琳琳刘忠平
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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