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Bulletproof polyurethane-fiber composite material and preparation method thereof

A fiber composite material and polyurethane composite material technology, applied in the field of composite materials, can solve the problems of poor bulletproof effect and low density of bulletproof inserts, achieve good safety protection and wearing experience, and enhance the ability to resist instantaneous deformation and flexibility. excellent effect

Inactive Publication Date: 2019-04-09
长沙盾甲新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the problem of poor bulletproof effect of bulletproof boards currently used, and provide a polyurethane-fiber composite material for bulletproof and its preparation method. The material has good instantaneous deformation resistance and low density. The advantages of strong toughness and ability to adapt to different climatic environments

Method used

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  • Bulletproof polyurethane-fiber composite material and preparation method thereof
  • Bulletproof polyurethane-fiber composite material and preparation method thereof
  • Bulletproof polyurethane-fiber composite material and preparation method thereof

Examples

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preparation example Construction

[0053] In a second aspect, the present invention provides a method for preparing a bulletproof polyurethane-fiber composite material, comprising the following steps:

[0054] (1) Weigh 40wt.%-60wt.% isocyanate and 40wt.%-60wt.% polymer polyol, heat the polymer polyol to 100-120°C, vacuum dehydrate for 1-2h, fill After entering nitrogen, cool to room temperature, add the isocyanate, heat to 60-90°C, keep warm and stir, react for 2-5h, lower the temperature to 40-50°C, discharge and package to obtain component A;

[0055] (2) Put the chain extender, dispersant, airgel, filler and catalyst into the container, disperse with a high-speed disperser for 15-60min, and pack it out to obtain component B. The mass percentage of the above components is:

[0056]

[0057] (3) Mix the A component and the B component uniformly to obtain a polyurethane composite;

[0058] (4) Clamp the mold after placing the fiber in the cavity of the mold, pump out the air in the cavity of the mold, inje...

Embodiment 1

[0067] (1) Put 50 parts by mass of polyether polyol in a container and heat it to 110°C, vacuumize and dehydrate for 1.5h, fill it with nitrogen and cool to room temperature, add 50 parts by mass of polymethylene polyphenyl polyisocyanate, Heat to 80°C, keep warm and stir, react for 4 hours, lower the temperature to 40°C, discharge and package to obtain component A.

[0068] (2) 27.5 parts by mass of 1,2-propanediol, 32 parts by mass of aerogel, 0.5 parts by mass of ethylene bisstearamide, 25 parts by mass of chopped glass fiber and 0.5 parts by mass of dibutyltin Add the lauric acid esters into the container respectively, disperse for 40 minutes with a high-speed disperser, and pack the material out to obtain component B.

[0069] (3) After mixing components A and B uniformly at a volume ratio of 5:1, a rapid prototyping high-strength flame-retardant polyurethane composite material was prepared.

[0070] (4) Close the mold after laying 3 layers of fiber in the cavity of the ...

Embodiment 2

[0072] (1) Put 50 parts by mass of polyester diol in a container and heat to 110°C, vacuum dehydrate for 1.5h, fill with nitrogen and cool to room temperature, add 20 parts by mass of diphenylmethane diisocyanate and 30 parts by mass One part of 1,6-hexamethylene diisocyanate was heated to 70°C, kept warm and stirred, reacted for 3.5 hours, the temperature was lowered to 45°C, and the material was packaged to obtain component A.

[0073] (2) 27 parts by mass of 1,4-butanediol, 43 parts by mass of airgel, 0.2 parts by mass of monoglyceride stearate, 10 parts by mass of chopped carbon fiber alumina powder, 12 parts by mass of Calcium carbonate powder, 0.2 parts by mass of bismuth neodecanoate and 0.2 parts by mass of stannous octoate were added to the container, dispersed with a high-speed disperser for 30 minutes, and packaged to obtain component B.

[0074] (3) After mixing components A and B uniformly at a volume ratio of 3:1, a rapid prototyping high-strength flame-retardant...

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Abstract

The invention relates to the field of bulletproof materials and discloses a bulletproof polyurethane-fiber composite material and a preparation method thereof. The polyurethane-fiber composite material comprises the following components in percent by weight: 20wt.%-60wt.% of fiber and 40wt.%-80wt.% of polyurethane composition, wherein the polyurethane composition is prepared by mixing a componentA and a component B according to the volume ratio of 1-10:1; the component A is isocyanate prepolymer synthesized by 40wt.%-60wt.% of isocyanate and 40wt.%-60wt.% of polymer polyol; the component B isprepared by mixing 25wt.%-30wt.% of chain expanding agent, 20wt.%-45wt.% of aerogel, 0.1wt.%-1wt.% of dispersing agent, 20wt.%-30wt.% of filler and 0.1wt.%-1wt.% of catalyst. The polyurethane-fiber composite material and the preparation method disclosed by the invention have the beneficial effects that the instantaneous deformation resistance and capability of responding to bad weather environment of a bulletproof plate can be enhanced, and better protection can be provided for the material and structure of a bullet inserting plate, so that the protective capability and the service life of the bulletproof plate are improved; simultaneously, due to good toughness of the polyurethane material, certain buffering-layer action also can be achieved, and the damage caused by deformation of the bulletproof inserting plate can be reduced.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a bulletproof polyurethane-fiber composite material and a preparation method thereof. Background technique [0002] As an important personal protective equipment, the bulletproof plate is generally used with bulletproof vests. It is an effective equipment to protect individual soldiers from direct damage from projectiles and shrapnel. After decades of development, there have been many outstanding innovations in materials and structures. And application, such as patent CN201420638529.1 has announced a kind of ceramic bulletproof board, comprising: backboard; A plurality of bulletproof ceramic pieces are arranged on this backboard, and the arrangement shape of these bulletproof ceramic pieces is in the length of this backboard It is divided into multiple levels in the extension direction, so that the joints of the bulletproof ceramic blocks between adjacent levels are staggered f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L75/06C08L71/10C08L23/06C08K7/06C08K7/10C08K7/14C08K3/22C08K3/26C08K3/34
CPCC08K2003/2227C08K2003/265C08L75/06C08L75/08C08L2201/02C08L2205/16C08L2207/068C08L71/10C08L23/06C08K7/06C08K7/10C08K7/14C08K3/22C08K3/26C08K3/34
Inventor 雷静裘航盛
Owner 长沙盾甲新材料科技有限公司
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