A kind of preparation method for sandwich composite material of bulletproof armor plate

A composite material and armor plate technology, applied in protective equipment, armor, protective equipment, etc., can solve problems such as brittle fracture, poor plasticity, and small molding size

Active Publication Date: 2021-04-23
GONG YI VAN-RES INNOVATION COMPOSITE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ceramic materials also have many disadvantages, such as poor plasticity, low fracture strength and brittle fracture, small molding size, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method for bulletproof armor plate sandwich composite material, the steps are as follows:

[0027] (1) Spread the ramie fiber cloth evenly in the mold cavity;

[0028] (2) Prepare silica sol by mixing ethyl orthosilicate, water, and absolute ethanol in a molar ratio of 1:7:8;

[0029] (3) Place the mold cavity in an environment of -10°C, then add silica sol into the mold cavity, and impregnate the ramie fiber for 24 hours;

[0030] (4) Take out the impregnated ramie fibers and perform gel-aging treatment at 40 °C for 20 h;

[0031] (5) The gel-aging system was frozen in an ultra-low temperature refrigerator at -40 °C for 6 h, and then placed in the drying chamber of a freeze dryer for 8 h to vacuumize and dry to obtain ramie fiber reinforced airgel felt A;

[0032] (6) Put epoxy resin, curing agent, epoxy resin reactive diluent, and hollow glass microspheres into epoxy resin:curing agent:epoxy resin reactive diluent:hollow glass microspheres=100:80:10: ...

Embodiment 2

[0037] A preparation method for bulletproof armor plate sandwich composite material, the steps are as follows:

[0038] (1) Spread the ramie fiber cloth evenly in the mold cavity;

[0039] (2) Prepare silica sol by mixing ethyl orthosilicate, water, and absolute ethanol in a molar ratio of 1:6:9;

[0040] (3) Place the mold cavity in an environment of -15°C, then add silica sol into the mold cavity, and impregnate the ramie fiber for 30 hours;

[0041] (4) Take out the impregnated ramie fibers and perform gel-aging treatment at 50°C for 30 hours;

[0042] (5) The system obtained after gel-aging was frozen in an ultra-low temperature refrigerator at -50°C for 8 hours, and then placed in the drying chamber of a freeze dryer for 10 hours of vacuum drying to obtain ramie fiber reinforced airgel felt A;

[0043] (6) Mix epoxy resin, curing agent, epoxy resin active diluent, and hollow glass microspheres according to epoxy resin: curing agent: epoxy resin active diluent: hollow gl...

Embodiment 3

[0048] A preparation method for bulletproof armor plate sandwich composite material, the steps are as follows:

[0049] (1) Spread the ramie fiber cotton evenly in the mold cavity;

[0050] (2) Prepare silica sol by mixing ethyl orthosilicate, water, and absolute ethanol in a molar ratio of 1:9:7;

[0051] (3) Place the mold cavity in an environment of -5°C, then add silica sol into the mold cavity, and impregnate the ramie fiber for 48 h;

[0052] (4) Take out the impregnated ramie fibers and perform gel-aging treatment at 70 °C for 48 h;

[0053] (5) The system obtained after gel-aging was frozen in an ultra-low temperature refrigerator at -60 °C for 12 h, and then placed in the drying chamber of a freeze dryer for 12 h to vacuumize and dry to obtain ramie fiber reinforced airgel felt A;

[0054](6) Put epoxy resin, curing agent, epoxy resin reactive diluent, and hollow glass microspheres into epoxy resin:curing agent:epoxy resin reactive diluent:hollow glass microspheres=...

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Abstract

The invention discloses a preparation method for a bulletproof armor plate interlayer composite material. Spread the ramie fiber evenly in the mold cavity; prepare silica sol; place the mold cavity in an environment of -20~0°C, then add the silica sol into the mold cavity, and impregnate the ramie fiber; take out the impregnated Ramie fiber, gel-aging treatment; Freezing in ultra-low temperature refrigerator, then placed in the drying chamber of freeze dryer to vacuumize and dry, obtain ramie fiber reinforced airgel felt A; epoxy resin, curing agent, epoxy Resin active diluent and hollow glass microspheres are prepared to obtain epoxy resin / hollow glass microspheres slurry B; the upper and lower sides of ramie fiber reinforced airgel mat A are first evenly coated with epoxy resin / hollow glass microspheres slurry B , and then cover the glass fiber cloth reinforced epoxy resin sheet on both sides respectively to obtain sandwich composite material C, which is cured in vacuum. The composite material prepared by the invention has good toughness and high compressive strength.

Description

technical field [0001] The invention belongs to the field of bulletproof armor plates, in particular to a method for preparing interlayer composite materials for bulletproof armor plates. Background technique [0002] For bulletproof armor, its ballistic performance is a key indicator, including penetration resistance, impact resistance and avalanche resistance, and they are closely related to the materials that make up the armor. Armor materials should meet the requirements of "high hardness, high strength, high toughness, low density, and low cost" as much as possible. However, no homogeneous single-phase material can meet this requirement at the same time. As an armor material, ceramics have many advantages: it has extremely high hardness and compressive strength, which is beneficial to resist the erosion of high-speed armor-piercing projectiles; the density is small, about 1 / 4~1 / 2 of homogeneous armor steel, which is conducive to reducing the weight of armor ; Good hea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B9/02B32B9/04B32B27/38B32B27/12B32B33/00D06M11/79D06M101/06B29C70/36B29C70/54B29C35/02F41H5/00
CPCB29C35/02B29C70/36B29C70/54B32B5/02B32B9/045B32B27/12B32B27/38B32B33/00B32B2250/40B32B2255/02B32B2255/26B32B2260/021B32B2262/065B32B2307/50B32B2307/558B32B2571/02D06M11/79D06M2101/06F41H5/00
Inventor 刘喜宗董会娜安康吕多军姚栋嘉张东生
Owner GONG YI VAN-RES INNOVATION COMPOSITE MATERIAL CO LTD
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