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Preparation method and application of resin composition for thermosetting aramid bulletproof composite material

A technology of bulletproof composite material and resin composition, which is applied in the field of modified phenolic resin composition and its preparation, which can solve the problems of brittle fracture, unfavorable bullet ability, and fiber cloth binding of products, and improve flexibility and bonding high safety margin and excellent bulletproof performance

Active Publication Date: 2012-07-25
BEIJING AEROSPACE RATE MECHANICAL & ELECTRICAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, for bulletproof composite materials, the bonding strength of the resin must be moderate. If the bonding strength is too large, the resin will bind the fiber cloth sample and make the fiber "plasticized", causing the product to be prone to brittle fracture, while the bonding strength is too small. , it is easy to cause the shrapnel to penetrate the composite material, the slippage between the cloth samples is not conducive to the transmission of the bullet ability, so the bond strength in the composite material must be moderate

Method used

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  • Preparation method and application of resin composition for thermosetting aramid bulletproof composite material

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Experimental program
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Effect test

Embodiment 1

[0030] First, weigh 110g polyvinyl butyral resin and 890g ethanol respectively, slowly add polyvinyl butyral resin to the ethanol solution and keep stirring, after the polyvinyl butyral resin is completely dissolved, weigh the total amount of the solution Weight, calculate the difference between the two total weights, and continue to add the ethanol weight of the two differences to the solution, mix well, and make 11% polyvinyl butyral resin solution for subsequent use.

[0031] Weigh 250g of phenolic resin, 500g of the above-mentioned polyvinyl butyral solution resin solution, 100g of dioctyl phthalate, 100g of epoxy resin, 30g of silane coupling agent and 20g of phosphoric acid, add them into a beaker and mix well to get the modified Resin solution.

[0032] Apply the above-mentioned modified resin solution evenly on the surface of the aramid fabric. After the resin is dried, cut the prepreg into a square of 300mm×300mm, stack 17 layers of fabric samples, and laminate them o...

Embodiment 2

[0034] The phenolic resin in embodiment 1 is changed into 500g, polyvinyl butyral solution resin solution is changed into 300g, all the other conditions are identical with embodiment 1. Use a uzi submachine gun and 9mm Pakistani bullet (lead core bullet) to test according to the NIJ0101.04 standard of the US Department of Justice. The ballistic performance test was carried out, and the results are shown in Table 1.

Embodiment 3

[0036] Change phenolic resin into 300g in embodiment 1, change polyvinyl butyral solution resin solution into 420g, change dioctyl phthalate into 150g, change epoxy resin into 80g, all the other conditions are identical with embodiment 1. Use a uzi submachine gun and 9mm Pakistani bullet (lead core bullet) to test according to the NIJ0101.04 standard of the US Department of Justice. The ballistic performance test was carried out, and the results are shown in Table 1.

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Abstract

The invention provides a preparation method of a resin composition for a thermosetting aramid bulletproof composite material, and relates to the field of resin modification. The resin composition comprises 25-50% of phenolic resin, 30-60% of polyvinyl butyral solution, 10-25% of a flexibilizer and 8-12% of a reinforcer. In addition, a silicane coupling agent with an addition rate of 2-5% is adopted to improve the compatibility of the resin and fabrics, and improve the adhesion between the resin and the fabrics. Phosphoric acid is used as a thermal stabilizer to improve the weathering resistance of the resin, and is added at an amount of 1-5%. The components are mixed proportionally to prepare a modified phenolic resin system. The modified phenolic resin thus prepared has the advantages of high toughness, moderate bonding strength, excellent anti-aging property and good stability. According to shooting tests, the aramid bulletproof composite material prepared from the resin composition has the characteristics of high bulletproof performance and large margin of safety, and can significantly improve the safety and reliability of fighters.

Description

Technical field: [0001] The invention relates to a preparation method of a resin composition for a thermosetting aramid bulletproof composite material, and furthermore, relates to a modified phenolic resin composition and a preparation method thereof. Background technique: [0002] Bulletproof composite materials are essential life protection equipment for combatants, especially the demand for bulletproof helmets is increasing year by year. At present, Western developed countries such as the United States and Europe have been equipped with high-performance fiber composite bulletproof materials. The development of high-performance fiber composite materials in my country started relatively late, and there is a certain gap compared with foreign countries. [0003] For high-performance fiber composite materials, aramid fabrics are mostly bonded with thermosetting resins. There are two main factors that affect high-performance fiber composite materials: the bonding strength betwe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/06C08L29/14C08L63/00C08K5/12C08K3/32
Inventor 吴中伟方心灵刘胜高虹刘元坤黄继庆梁立潘智勇张静吕攀珂赵耀王瑞岭傅丽强白海燕左向春
Owner BEIJING AEROSPACE RATE MECHANICAL & ELECTRICAL ENG CO LTD
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