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A kind of flexible reinforced composite material and preparation method thereof

A composite material and flexible technology, applied in the direction of bridge reinforcement, chemical instruments and methods, synthetic resin layered products, etc., can solve problems such as threats to the safety of personnel and material equipment, inability to carry out rapid repairs, and damage to engineering structures, etc., to achieve improved resistance Explosion shock ability, improved anti-explosion and anti-penetration ability, strong applicability

Active Publication Date: 2021-05-04
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For the current military protection project, it is mainly aimed at the position project. Once it is attacked by a missile explosion, it will cause serious damage to the project structure and seriously threaten the safety of personnel and material equipment.
At present, the commonly used materials are mainly concrete or reinforced concrete, which have defects such as heavy weight, poor protection effect, difficult maintenance, and inability to perform rapid repairs.

Method used

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  • A kind of flexible reinforced composite material and preparation method thereof
  • A kind of flexible reinforced composite material and preparation method thereof
  • A kind of flexible reinforced composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A flexible reinforced composite material such as figure 1 As shown, the flexible reinforced composite material includes a polyurea coating 1 on the surface of the woven fabric, and a three-dimensional orthogonal woven fabric 2 impregnated with a mixed slurry padding liquid; the thickness of the three-dimensional orthogonal woven fabric is 6mm, and the length is 20m. The width is 1.5m; the weft yarn is Toray’s T620SC-24K-50C carbon fiber, and the linear density is 1850tex; the warp yarn is Japanese Teijin’s aramid (3220dtex / 2000f) fiber, and the Z-direction yarn is DyneemSK-66 from the Dutch DSM company; The 6 layers of warp yarns pass through the improved loom in a straightened state, and 7 weft yarns are fed into the gaps between the warp yarns, and the Z-direction yarns are fixed by using the up and down movement of the healds.

[0050] The front rendering of the three-dimensional orthogonal woven fabric is as follows figure 2 shown. The warp density and weft densi...

Embodiment 2

[0060] Referring to Example 1, the amount of potato starch was replaced by 2kg, 4kg, 6kg, and 10kg respectively, and other conditions remained unchanged, and a pretreated woven fabric was prepared, which was then compounded with polyurea to obtain a flexible and reinforced composite material. The specific test results are shown in Table 1, Table 2, and Table 3; Table 1 shows the tensile performance results of woven fabrics pretreated with different potato starch dosages; Table 2 shows the penetration performance results of flexible reinforced composite materials prepared with different potato starch dosages; Table 3 is the rigid-flexibility results of flexible reinforced composites under different potato starch content.

[0061] Table 1 Tensile properties of woven fabrics pretreated with different potato starch dosages

[0062]

[0063] Table 2 Penetration properties of flexible reinforced composites prepared with different amounts of potato starch

[0064]

[0065] Tab...

Embodiment 3

[0069] Referring to Example 1, the solid content of the water-based polyurethane emulsion was changed to 5%, 10%, 20%, and 30%, respectively, and other conditions remained unchanged, to prepare a flexible reinforced composite material. See Table 4 and Table 5 for specific results.

[0070] The results of tensile properties of woven fabrics pretreated with solid content of different water-based polyurethane emulsions in table 4

[0071]

[0072] Table 5 Penetration performance results of flexible reinforced composites prepared with different solid contents of aqueous polyurethane emulsions

[0073]

[0074] Table 6 Rigid-flexible results of flexible reinforced composites prepared with solid content of different aqueous polyurethane emulsions

[0075]

[0076] As can be seen from Table 4, with the increase of the solid content of the aqueous polyurethane emulsion, the stretchability of the impregnated fabric increases, but when the solid content of the aqueous polyuret...

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Abstract

The invention discloses a flexible reinforced composite material and a preparation method thereof, belonging to the technical field of protective engineering. The preparation method of the flexible reinforced composite material of the present invention comprises the following steps: immersing and drying the woven fabric in the slurry padding liquid to obtain the pretreated woven fabric; then spraying polyurea elastomer technology on the pretreated machine The surface of the fabric is sprayed with a polyurea coating to obtain a flexible and reinforced composite material; wherein the components of the slurry padding liquid include potato starch, corn starch, and water-based polyurethane. The flexible reinforced composite material prepared by the present invention can reinforce reinforced concrete materials, and has the advantages of flexibility, large-area curved surface coverage, light weight, convenient storage and transportation, wide application range, rapid reinforcement and repair, good explosion resistance and penetration resistance, etc. , more suitable for anti-blast reinforcement of special structures such as arch bridges.

Description

technical field [0001] The invention relates to a flexible reinforced composite material and a preparation method thereof, belonging to the technical field of protection engineering. Background technique [0002] Protective engineering is a guarantee for the safety of people's lives and property in a country, and it also reflects the basic defense capabilities of a country in the face of war. It can be said that the construction of protective engineering is related to the life and death of the country. With the development of modern advanced weapons such as precision-guided weapons and ground-penetrating weapons, these weapons have gained stronger destructive capabilities, and the upgrading of protective engineering also needs to keep pace with the times. [0003] For the current military protection project, it is mainly aimed at the position project. Once it is attacked by a missile explosion, it will cause serious damage to the project structure and seriously threaten the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/11D06M15/564D06N3/12D06N3/00B32B9/00B32B9/04B32B5/02B32B5/26B32B27/32B32B27/34B32B27/02B32B27/12B32B27/04B32B27/40B32B7/022B32B33/00E01D22/00D06M101/20D06M101/36D06M101/40
CPCB32B5/02B32B5/26B32B33/00B32B2260/023B32B2260/04B32B2260/046B32B2262/0253B32B2262/0261B32B2262/106B32B2307/50B32B7/022D06M15/11D06M15/564D06M2101/20D06M2101/36D06M2101/40D06N3/0006D06N3/0015D06N3/0034D06N3/0038D06N3/009D06N3/12D06N2209/103E01D22/00
Inventor 张典堂梁琦钱坤徐阳
Owner JIANGNAN UNIV
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