Unlock instant, AI-driven research and patent intelligence for your innovation.

Polyurea-metal-polyurea composite structure capable of improving bulletproof and explosion-proof performance and preparation method

A technology of composite structure and bulletproof polyurea layer, applied in polyurea/polyurethane coatings, devices for coating liquid on surfaces, coatings, etc., can solve problems that have not been researched

Active Publication Date: 2022-03-22
TSINGHUA UNIV
View PDF11 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, it has not been studied how to spray polyurea on the basis of the original protective materials to fully improve its bulletproof and explosion-proof comprehensive performance at the same time.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polyurea-metal-polyurea composite structure capable of improving bulletproof and explosion-proof performance and preparation method
  • Polyurea-metal-polyurea composite structure capable of improving bulletproof and explosion-proof performance and preparation method
  • Polyurea-metal-polyurea composite structure capable of improving bulletproof and explosion-proof performance and preparation method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0046] refer to figure 2 and image 3 as shown, figure 2 A process flow diagram showing a method for preparing a polyurea-metal-polyurea composite structure that improves bulletproof and explosion-proof performance of the present invention; image 3 It shows a flow chart of steps of a method for preparing a polyurea-metal-polyurea composite structure that improves bulletproof and explosion-proof performance of the present invention. A method for preparing a polyurea-metal-polyurea composite structure that improves bulletproof and explosion-proof performance provided by the second aspect of the present invention comprises the following steps:

[0047] S1, using the isocyanate component and the amino compound component as raw materials to prepare a homogeneous reaction product;

[0048] S2, spraying and bonding the homogeneous reaction product on the first surface of the metal layer 1 to form a bulletproof polyurea layer 2; wherein, the spraying thickness of the bulletproof...

Embodiment 1

[0064] This embodiment is used to further illustrate a kind of preparation method of the polyurea-metal-polyurea composite structure of the present invention that improves ballistic and anti-explosion performance, isocyanate component (model CDMDI-100L)) and amino compound (model Versalink P-1000) According to the pre-set molar ratio of 1.05:1, they are pre-installed in two raw material barrels 6 respectively, start the spraying host 9 to control the material pump 7, and simultaneously extract the isocyanate component and amino compound through the two delivery pipes 8 of the spraying host 9 After entering the spraying main machine 9, pump the heating and insulating hose 10 with a length of 15m and a constant temperature of 30°C in the pipe, and directly enter the spraying air gun 11. Spraying is bonded to the first side of the 5mm thick steel plate, and the spraying thickness is 3mm to form the bulletproof polyurea layer 2; after the bulletproof polyurea layer 2 is sprayed, co...

Embodiment 2

[0066] On the basis of the method described in Example 1, the spraying thickness of the explosion-proof polyurea layer 3 is 5mm.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a polyurea-metal-polyurea composite structure capable of improving bulletproof and explosion-proof performance and a preparation method, and the polyurea-metal-polyurea composite structure comprises a metal layer, a bulletproof polyurea layer bonded on a first surface of the metal layer in a spraying manner, and an explosion-proof polyurea layer bonded on a second surface, deviating from the first surface, of the metal layer, the thickness of the bulletproof polyurea layer is 3 mm, and the thickness of the explosion-proof polyurea layer is 5-15 mm. According to the technical scheme provided by the invention, a specific spraying position and a corresponding spraying thickness are provided by combining a shock wave propagation rule by utilizing an enhancement mechanism of hardening, strengthening and interface failure of the polyurea elastomer under strong impact on bulletproof and explosion-proof performance of the polyurea-metal composite structure; and meanwhile, an original protective material / structure has the maximum bulletproof and explosion-proof comprehensive performance, and a great progress is made for the light protection field.

Description

technical field [0001] The present application relates to the field of safety protection, in particular to a polyurea-metal-polyurea composite structure and a preparation method for improving bulletproof and explosion-proof performance. Background technique [0002] Fragments and explosion shock waves are often produced at the same time when an explosion occurs. To deal with this incident, it is necessary to require protective materials / structures to have as high a comprehensive bulletproof and explosion-proof performance as possible under a fixed surface density. According to the action time and load pressure amplitude of fragment penetration and blast shock wave load, the required protective material / structure should have high transient specific strength and specific toughness per unit mass. In the field of lightweight protection against explosions, metal or its composite materials are usually used, such as common metal armor materials, but there is a disadvantage of relat...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14C09D175/02C09D5/00
CPCB05D7/14C09D175/02C09D5/00B05D2202/10B05D2518/00
Inventor 柳占立初东阳杜智博王毅刚庄茁
Owner TSINGHUA UNIV