Flexible protective composite material and manufacturing method thereof

A composite material and flexible protection technology, applied in the direction of protective equipment, dry-cleaning fiber products, personnel protection equipment, etc., can solve the problems that affect the application effect of composite materials, low surface energy of high-performance fibers, and failure to achieve protective effects, etc., to achieve good Protective effect, improved wetting performance, effect of increased quantity

Inactive Publication Date: 2021-06-04
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many high-performance fibers have disadvantages such as low surface energy and poor surface adhesion, which affect the application effect of composite materials and still fail to achieve the ideal protective effect.

Method used

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  • Flexible protective composite material and manufacturing method thereof
  • Flexible protective composite material and manufacturing method thereof
  • Flexible protective composite material and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] To make a flexible protective composite:

[0031] 1. Prepare a shear thickening solution with a mass fraction of 70%

[0032] Use a balance to weigh SiO with an average particle size of 650nm 2 70g of nanoparticles, 30g of polyethylene glycol (PEG200) with a molecular weight of 200.

[0033] In order to quickly and efficiently disperse uniformly, a high-speed disperser is used to disperse at a rate of 2800r / min, and the temperature is room temperature. 2 Nanoparticles were added to PEG200 several times in small amounts, and added again when dispersed until there was no obvious precipitation or particles. When SiO 2 When the mass concentration of nanoparticles reaches 35%, use an electric stirrer for dispersion treatment, the dispersion rate is 800r / min, and the temperature is room temperature until all of them are added. Then alternately carry out ultrasonic oscillation and stirring treatment, the frequency of each ultrasonic oscillation is 40kHz, the time is 30min, ...

Embodiment 2

[0046] 1. For the flexible protective composite material obtained in Example 1, calculate SiO 2 Attachment of nanoparticles.

[0047] SiO 2 Adhesion amount of nanoparticles=(weight of flexible protective composite material-fabric weight after plasma treatment) / fabric weight after plasma treatment×100%.

[0048] After measurement and calculation, SiO in the obtained flexible protective composite 2 The attachment amount of nanoparticles reached 44.74%, compared with the SiO 2 The attachment amount of nanoparticles (27.68%) increased by 61.2%.

[0049] The obtained flexible protective composite material is subjected to scanning electron microscope observation, and the obtained scanning electron microscope picture is as follows: figure 1 shown. The scanning electron microscope image of the composite material obtained from the ultra-high molecular weight polyethylene fabric without plasma treatment is as follows figure 2 shown

[0050] 2. Drop hammer impact test

[0051] ...

Embodiment 3

[0056] To make a flexible protective composite:

[0057] 1. Prepare a shear thickening solution with a mass fraction of 65%

[0058] Use a balance to weigh SiO with an average particle size of 600nm 2 65g of nanoparticles, 35g of polyethylene glycol (PEG200) with a molecular weight of 200.

[0059] In order to quickly and efficiently disperse uniformly, a high-speed disperser is used to disperse at a rate of 2500r / min, and the temperature is room temperature. 2 Nanoparticles were added to PEG200 several times in small amounts, and added again when dispersed until there was no obvious precipitation or particles. When SiO 2 When the mass concentration of nanoparticles reaches 35%, use an electric stirrer for dispersion treatment, the dispersion rate is 600r / min, and the temperature is room temperature until all of them are added. Then alternately carry out ultrasonic oscillation and stirring treatment, the frequency of each ultrasonic oscillation is 35kHz, the time is 25min, ...

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Abstract

The invention relates to the technical field of composite materials, and particularly discloses a flexible protective composite material. The flexible protective composite material is obtained by adopting an ultra-high molecular weight polyethylene fabric subjected to plasma treatment as a matrix and uniformly adhering a shear thickening liquid to the matrix. According to the flexible protective composite material provided by the invention, the ultra-high molecular weight polyethylene fabric is treated with the plasma treatment technology, so that the surface performance of the ultra-high molecular weight polyethylene fabric can be effectively improved, the adhesive force and the bonding performance of a dispersion in the shear thickening liquid on the surface of the ultra-high molecular weight polyethylene fabric are improved, and under the condition that the layer number and the weight of the ultra-high molecular weight polyethylene fabric are not increased, the protection performance and the flexibility of the protective composite material are effectively improved.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a flexible protective composite material and a manufacturing method thereof. Background technique [0002] High-performance fiber materials have the characteristics of high specific strength, high specific modulus, good impact resistance, high protection performance, and strong performance design, and have been widely used in the field of human body bulletproof. Ordinary high-performance fiber dry cloth can resist high-speed ballistic impact when laminated with 20-40 layers, but it will cause the bulletproof material to be tight and heavy. Shear Thickening Fluid (STF) is a kind of intelligent bulletproof material. When it is sheared by high-speed impact, it will quickly change from liquid to solid to resist high-speed impact. When the impact force disappears, a reversible phase transition will occur and return to liquid state. . This smart bulletproof material can n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/00D06N3/12F41H1/02D06L1/02D06M10/02
CPCD06N3/0038D06N3/0063D06N3/12F41H1/02D06L1/02D06M10/025
Inventor 阎若思张倩玉吴孟锦王可忆刘紫璇高星宇王虎辰李乐天陈焕张兴腾贾立霞
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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