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Bullet-proof glass

A technology of bullet-proof glass and glass, which is applied in the direction of glass/slag layered products, defenses, layered products, etc. It can solve the problems of high proportion, complex overall structure and difficult production of bullet-proof glass products, and achieve light weight and bullet-proof Good effect and low cost effect

Inactive Publication Date: 2014-01-01
天津广源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

[0004] However, the above-mentioned bulletproof glass has a large proportion of products, a relatively complicated overall structure, and great difficulty in production, resulting in high cost.

Method used

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  • Bullet-proof glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) Raw material pretreatment

[0029] Clean and dry the toughened glass raw materials; PC boards are also dried for use;

[0030] 2) Composite

[0031] Combine 5mm tempered glass 1, 0.76mm PVB film 2, 5mm tempered glass 3, 1.89mm polyurethane film 4, and 2mm PC board 5 in sequence;

[0032] 3) Preload

[0033] First, preheat the laminated composite material until the surface temperature of the glass is 30°C, and perform the first pre-compression with a pressure of 0.3Mpa; then, raise the temperature to 70°C, and perform the second pre-compression with a pressure of 0.4Mpa;

[0034] 4) High pressure forming

[0035] The composite material after the second pre-compression is sent into the autoclave, and the temperature is raised to 130°C, the pressure is 1.3Mpa, and the heat preservation and pressure are maintained for 70 minutes. structured as figure 1 shown.

[0036] The obtained bulletproof glass is tested: the thickness is 14mm, the light transmittance is 84.6%,...

Embodiment 2

[0038] Bulletproof glass was prepared according to the method of Example 1.

[0039] Among them, in step 2), the raw materials of the combined sheet are tempered glass 5mm, PVB film 0.76mm, tempered glass 8mm, polyurethane film 1.89mm, and PC board 2mm;

[0040] In step 3), the preheating temperature is 20°C; the first precompression pressure is 0.6Mpa; the temperature is raised to 60°C again, and the second precompression pressure is 0.6Mpa;

[0041] In step 4), increase the temperature and pressure to a temperature of 120°C, a pressure of 1.3Mpa, and hold the temperature for 100 minutes;

[0042] The thickness of the obtained bullet-proof glass is 17mm after testing, its light transmittance is 82%, and the bullet-proof level can reach the F64-H level of the national standard GB17840-1999.

Embodiment 3

[0044] Bulletproof glass was prepared according to the method of Example 1.

[0045] Among them, in step 2), the raw materials of the combined sheet are float glass 4mm, PVB film 0.76mm, tempered glass 8mm, polyurethane film 1.89mm, and PC board 1mm;

[0046] In step 3), the preheating temperature is 40°C; the first precompression pressure is 0.1Mpa; the temperature is raised to 80°C again, and the second precompression pressure is 0.2Mpa;

[0047] In step 4), increase the temperature and pressure to a temperature of 140°C, a pressure of 1.3Mpa, and hold the temperature for 30 minutes;

[0048] The obtained bulletproof glass has a thickness of 15.05mm after testing, and its light transmittance is 83.7%. The bulletproof level can reach the F64-H level of the national standard GB 17840-1999.

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Abstract

The invention relates to bullet-proof glass. The bullet-proof glass is composited by laminated glass, polyurethane elastomer and a PC (polycarbonate) board. The bullet-proof glass has the advantages of simple structure, thinness, light weight, low cost and good bullet-proof effect. Further, the bullet-proof glass is capable of effectively proofing bullets and avoiding secondary harms to human bodies after being smashed into pieces.

Description

technical field [0001] The invention relates to bulletproof glass, which belongs to the technical field of special glass. Background technique [0002] Bulletproof glass is a composite material obtained by special processing of glass (or plexiglass) and high-quality engineering plastics. Different manufacturers produce different bulletproof glass. But basically layers of polycarbonate material are sandwiched between regular layers of glass, a process called lamination. In the process, a substance is formed that resembles normal glass but is thicker than normal glass. Polycarbonate is a hard, transparent plastic. The thickness of bulletproof glass is between 7mm and 75mm. A bullet fired at bulletproof glass would puncture the outer layer of glass, but the polycarbonate glass material layer absorbs the energy of the bullet, preventing it from penetrating the inner layer of glass. These large pieces of bulletproof glass, which had been used for public use during World War I...

Claims

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Application Information

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IPC IPC(8): F41H5/06B32B17/06
Inventor 高源赵春新赵小贞李春蕾
Owner 天津广源新材料科技有限公司
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