Flexible reinforced composite material and preparation method thereof

A composite material and flexible technology, which is applied in the direction of bridge reinforcement, chemical instruments and methods, and synthetic resin layered products, can solve problems such as threats to the safety of personnel and material equipment, inability to perform rapid repairs, and damage to engineering structures, etc. Explosion shock ability, improved anti-explosion and anti-penetration ability, large coverage effect

Active Publication Date: 2020-08-07
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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  • Flexible reinforced composite material and preparation method thereof
  • Flexible reinforced composite material and preparation method thereof
  • 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 and 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] It can be seen from Table 4 that 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 p...

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Abstract

The invention discloses a flexible reinforced composite material and a preparation method thereof, and belongs to the technical field of protection engineering. The preparation method of the flexiblereinforced composite material comprises the following steps of impregnating a woven fabric in a slurry padding solution, and drying to obtain a pretreated woven fabric; and then spraying a polyurea coating on the surface of the pretreated woven fabric by using a polyurea elastomer spraying technology to obtain the flexible reinforced composite material, wherein the slurry padding liquid comprisesthe following components including potato starch, corn native starch and waterborne polyurethane. The flexible reinforced composite material prepared by the method can reinforce reinforced concrete materials, has the advantages of flexibility, large-area curved surface coverage, light weight, convenience in storage and transportation, wide application range, quick reinforcement and repair, good anti-explosion and anti-penetration performance and the like, and is more suitable for anti-explosion 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 Applications(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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