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Manufacturing method of polyurethane composite lenses with bulletproof function

A manufacturing method, polyurethane technology, applied in the direction of polyurea/polyurethane adhesives, chemical instruments and methods, protective clothing, etc., can solve the problem that the lens cannot be bulletproof.

Active Publication Date: 2020-09-04
SHANGHAI WEIXING OPTICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the thickness of the lens is within 2.8mm, it is impossible for the lens to meet the requirement of bulletproof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of polyurethane adhesive: accurately weigh dihydroxy polyether polyol, molecular weight 2000, 20 grams; NN dimethylformamide, 12 grams; xylene, 12.5 grams; chain extender 0.5 grams; catalyst 0.5 grams in order Put it into the reaction kettle, stir evenly for 30 minutes, then add 10.5 grams of diphenylmethylpropane diisocyanate and 10.5 grams of 2,6-toluene diisocyanate. After adding, heat to 70 degrees while stirring, and react at 70 degrees for 5 hours. The remaining 4.5 grams of diphenylmethylpropane diisocyanate and 4.5 grams of 2,6-toluene diisocyanate were added in four times, each interval was 10 minutes, and then the viscosity of the reaction solution was monitored. When the viscosity reached 100CPS (25 degrees), add NN Dimethylformamide, 12 g; Xylene, 12.5 g. Continue to react until the viscosity reaches 100CPS (25 degrees). Six polycarbonate lenses were prepared by injection molding, the lens thickness was 0.2 mm, and the radius of curvature of th...

Embodiment 2

[0028]Preparation of polyurethane adhesive: accurately weigh dihydroxy polyether polyol, molecular weight 2000, 20 grams; NN dimethylformamide, 12 grams; xylene, 12.5 grams; chain extender 0.5 grams; catalyst 0.5 grams in order Put it into the reaction kettle, stir evenly for 30 minutes, then add 10.5 grams of diphenylmethylpropane diisocyanate and 10.5 grams of 2,6-toluene diisocyanate. After adding, heat to 70 degrees while stirring, and react at 70 degrees for 5 hours. The remaining 4.5 grams of diphenylmethylpropane diisocyanate and 4.5 grams of 2,6-toluene diisocyanate were added in four times, each interval was 10 minutes, and then the viscosity of the reaction solution was monitored. When the viscosity reached 100CPS (25 degrees), add NN Dimethylformamide, 12 g; Xylene, 12.5 g. Continue to react until the viscosity reaches 100CPS (25 degrees). Twelve polycarbonate lenses were prepared by injection molding, the lens thickness was 0.1 mm, and the radius of curvature of ...

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Abstract

The invention relates to a manufacturing method of polyurethane composite lenses with a bulletproof function. The manufacturing method is completed in a manner that 3-100 layers of lenses are alternately stacked and bound, polycarbonate lenses are adopted on the two outermost layers, and polyurethane lenses are adopted inside or polycarbonate lenses and polyurethane lenses are alternately stackedinside; and polyurethane binders are adopted for binding between the lenses. The specific binders provided by the method are used for binding, under strong impacting of steel balls with the weight being 16 G+0.1 G and the diameter being 16 mm under nitrogen being 20 KG with the launching speed being 200 m / s, the lenses do not fracture, and the lenses have the requirement of the bulletproof function.

Description

technical field [0001] The invention relates to the field of lens technology, in particular to a method for manufacturing a polyurethane composite lens with bulletproof function. Background technique [0002] At present, due to the particularity of the use environment, the impact resistance of military protective glasses is better than other ordinary protective glasses. Explosion-proof military protective glasses and goggles mainly adopt CE EN 166, ANSI Z87.1 standards, which meet the US military regulations bulletproof glasses Shock resistance regulations MIL-PRF-31013, MIL-V-43511BP-10621. Comply with the quality and anti-shock-international standard: American standard Z78.1, military STD-662F and European standard EN166. Polyacid carbon resin 2.8mm thick lenses made of foreign imported materials can reach the weight of 5G+0.1G, steel balls with a diameter of 6MM, under the strong impact of a nitrogen 20KG launch speed of 200 feet per second, the lens will not break. How...

Claims

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Application Information

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IPC IPC(8): B29C65/48B32B7/12B32B27/08B32B27/36B32B27/40B32B33/00C09J175/08C08G18/76C08G18/48G02B1/04B29L11/00
CPCB29C65/48B32B27/365B32B27/40B32B27/08B32B7/12B32B33/00G02B1/041C09J175/08C08G18/7671C08G18/7614C08G18/4825B32B2250/24B32B2307/558B32B2571/02B29L2011/0016
Inventor 金婉卿汪山献松陈国贵
Owner SHANGHAI WEIXING OPTICAL