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Preparation method of shear thickening gel, and application of gel in anti-break fabric

A technology for thickening gels and fabrics, applied in textiles, papermaking, fiber processing, etc., can solve the problems of complex process, high fluidity, insufficient breaking resistance, etc., and achieve the effect of solving too fast reaction and enhancing breaking resistance.

Inactive Publication Date: 2018-10-12
董小琳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the problems in the prior art of insufficient burst resistance, relatively complicated process, and high fluidity, the present invention provides a method for preparing a shear-thickening gel, which includes the following raw material components in parts by weight:

Method used

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  • Preparation method of shear thickening gel, and application of gel in anti-break fabric
  • Preparation method of shear thickening gel, and application of gel in anti-break fabric
  • Preparation method of shear thickening gel, and application of gel in anti-break fabric

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preparation example Construction

[0034] This embodiment provides a method for preparing a shear-thickening gel, which includes the following raw material components in parts by weight:

[0035]

[0036] As a preferred embodiment, the borate is a nitrogen-containing borate.

[0037] As a preferred embodiment, the borate is triethanolamine borate.

[0038] As a preferred embodiment, the hemp stalk core short fibers have a diameter of 50-500 nm and a length of less than 100 μm.

Embodiment approach

[0039] As a preferred embodiment, the preparation method of the shear thickening gel comprises the following steps:

[0040] Step 1: Disperse the silica balls in the mixed solution of water and ethanol, add resorcinol and formaldehyde in sequence, stir the mixed solution at 30-50°C for 4-24 hours, suction filter and recover the mixed liquid, and dry After that, the modified silica is obtained; as figure 1 and 2 Shown are SEM images of two sets of modified silica.

[0041] Step 2: Mix the hemp stalk core fiber with the alkaline compound solution and place it in a ball mill tank, mill it for 2 to 8 hours, wash it with water to neutrality, and dry it to obtain the hemp stalk core short fiber; Figure 3-4 Shown are AFM images of hemp stalk core staple fibers and their corresponding height maps.

[0042] Step 3: put hydroxyl silicone oil, boric acid ester, hemp stalk core short fiber, and modified silica into the polymer mixing equipment in proportion, mix them into a base mater...

Embodiment 1

[0055] The preparation method of fabric in the present embodiment, comprises the steps:

[0056] Step 1: Disperse the silica balls in the mixed solution of water and ethanol, add resorcinol and formaldehyde in sequence, stir the mixed solution at 30°C for 24 hours, suction filter and recover the mixed liquid, and obtain the improved product after drying. Silica; wherein the weight ratio of water and ethanol is 1:8, and the weight ratio of resorcinol, formaldehyde and silicon dioxide is 1:2:20;

[0057] Step 2: Mix the hemp stalk core fiber with the alkaline compound solution and put it in a ball mill tank. After ball milling for 4 hours, wash with water until neutral, and dry to obtain the hemp stalk core short fiber. The ball-to-material ratio is 40:1, and the rotation speed is 350rpm ;

[0058] Step 3: put 100 parts by weight of hydroxyl silicone oil, 5 parts by weight of boric acid ester, 5 parts by weight of hemp stalk core short fiber, and 30 parts by weight of modified ...

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Abstract

The invention discloses a preparation method of a shear thickening gel, and an application of the gel in an anti-break fabric, and belongs to the field of composite materials. The shear thickening gelcomprises, by weight, 80-120 parts of hydroxyl silicone oil, 5-10 parts of borate ester, 0.5- 5 parts of kenaf core short fibers, and 10-40 parts of modified silica. The borate ester is adopted to substitute boric acid in conventional methods, so the problem of too fast reaction of boric acid and hydroxyl silicone oil is inhibited and solved; and silicon-boron polymers with different viscositiescan be obtained in a high temperature state by changing the addition amount of the borate ester, so the problem of production in a kneader due to the great increase of the viscosity of most conventional silicon-boron polymers in the high temperature state is solved.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a preparation method of a shear-thickening gel and its application on break-resistant fabrics. Background technique [0002] Shear thickening refers to the phenomenon that the viscosity of the system increases rapidly, violently and nonlinearly when it is subjected to shear force. The main principle is that when a certain material is not subjected to shear or impact force, the dispersed phase particles and the The network structure is formed due to hydrogen bonding, and the dispersed phase particles do not interfere with each other. When it is subjected to shear or impact force, the originally formed network structure gradually disintegrates, and the dispersed phase particles collide with each other to form particle clusters. , reducing the fluidity of the material, resulting in a sharp increase in its viscosity, showing the phenomenon of "thickening". When the shear force dis...

Claims

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Application Information

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IPC IPC(8): D06M15/687D06M15/643D06M15/01D06M11/79
CPCD06M11/79D06M15/01D06M15/643D06M15/687
Inventor 董小琳其他发明人请求不公开姓名
Owner 董小琳
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