KR20180085410A - Lightweight bullet-proof helmet using hybrid prepreg - Google Patents
Lightweight bullet-proof helmet using hybrid prepreg Download PDFInfo
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- KR20180085410A KR20180085410A KR1020170008587A KR20170008587A KR20180085410A KR 20180085410 A KR20180085410 A KR 20180085410A KR 1020170008587 A KR1020170008587 A KR 1020170008587A KR 20170008587 A KR20170008587 A KR 20170008587A KR 20180085410 A KR20180085410 A KR 20180085410A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H1/00—Personal protection gear
- F41H1/04—Protection helmets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
- B32B5/262—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a woven fabric layer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H5/00—Armour; Armour plates
- F41H5/02—Plate construction
- F41H5/04—Plate construction composed of more than one layer
- F41H5/0471—Layered armour containing fibre- or fabric-reinforced layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0261—Polyamide fibres
- B32B2262/0269—Aromatic polyamide fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2437/00—Clothing
- B32B2437/04—Caps, helmets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2571/00—Protective equipment
- B32B2571/02—Protective equipment defensive, e.g. armour plates, anti-ballistic clothing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Textile Engineering (AREA)
- Helmets And Other Head Coverings (AREA)
Abstract
Description
본 발명은 필름형 프리프레그 층의 양면에 딥(dip)형 프리프레그를 적층하여 제조된 방탄헬멧으로, 안정성이 높아 헬멧 성형에 유리하면서도 방탄성능이 우수하며, 중량도 가벼운 경량화된 방탄헬멧이다.The present invention is a bullet-proof helmet produced by laminating dip-type prepregs on both sides of a film-type prepreg layer. It is a lightweight bulletproof helmet which is high in stability and excellent in bulletproof performance, light in weight, and lightweight.
방탄의류는 포탄의 파편 또는 탄환으로부터 인체를 보호하기 위하여 착용하는 보호장비의 일종이다. 따라서 방탄의류가 갖추어야 할 가장 중요한 요건들 중 하나는 방탄 성능이다. 방탄용 복합재료는 탄환이나 포탄으로부터 군인 등의 신체를 보호하기 위한 제품으로서, 사용하는 재료나 제작방법에 따라 방탄 성능이 크게 좌우된다.Bulletproof clothing is a type of protective equipment worn to protect the human body from shrapnel or bullets in shells. Therefore, one of the most important requirements for bulletproof clothing is ballistic performance. Bulletproof composite materials are products for protecting the body of soldiers and others from bullets and shells, and their bulletproof performance depends largely on the material and manufacturing method used.
그런데, 방탄의류는 기본적으로 인체에 직접 착용하여 임무를 수행하기 위한 보호장비이므로 방탄성능 뿐만 아니라, 임무를 수행하는 동안 행동에 불편을 주는 일이 없도록 착용했을 시의 착용감 또한 우수하여야 한다.However, since bulletproof clothing is basically a protective equipment for performing a mission by directly wearing it on the human body, it should not only have a bulletproof performance but also a good wearing comfort when worn so as not to cause inconvenience to the action during the mission.
그 중 방탄헬멧은 총탄 및 파편에 저지효과를 갖추고 방탄 후 2차 충격으로 인하여 인체에 치명적인 두부 상해가 발생하는 것을 방지하기 위한 다른 방탄의류보다도 특히 방탄 성능이 특히 강조된다.Among them, bulletproof helmets are especially emphasized bulletproof performance than other bulletproof garments to prevent deadly injury to the human body due to secondary impact after bulletproofing with bullets and fragments.
방탄헬멧은 아라미드(aramid)와 같은 방탄용 고강도 섬유 등을 적층한 후, 이를 성형하여 제조한다. 일반적으로 섬유의 방사에 있어서는 방사 노즐당 오리피스 개수가 50개 정도로 이루어진 의류용 섬유의 방사보다 방사 노즐당 오리피스 개수가 200 내지 2,000개인 산업용 섬유의 방사 시 많은 기술적 어려움이 있다. 이러한 이유는 오리피스의 개수가 증가함에 따라 균일한 방사 압력을 조절하기가 어려워서 방사 노즐과 분배판을 적절히 설계하여 제작해야 함은 물론, 특히 공기층에서 균일하게 냉각시킬 수 있는 조건과 200 내지 2,000 필라멘트 전체가 균일하게 수세, 건조시킬 수 있는 조건의 조절이 매우 어려우며, 이 때문에 일정 수준 이상의 물성을 발현하는 것과 전체적으로 필라멘트의 균일한 물성을 유지하는 것이 매우 어렵기 때문에 단순히 50가닥 정도의 섬유 물성을 참조하여 산업용 사에 적용하는 것에는 어려움이 있다. The bulletproof helmet is manufactured by laminating high strength fibers for bulletproofing such as aramid and then molding the same. Generally, there are many technical difficulties in spinning of industrial fibers having an orifice number of 200 to 2,000 per spinneret than spinning of garment fibers having about 50 orifices per spinneret in fiber spinning. The reason for this is that it is difficult to control the uniform radiation pressure as the number of orifices increases, so that it is necessary to design the spinneret and the distribution plate appropriately, and in particular, the condition that uniform cooling can be performed in the air layer, It is very difficult to control the conditions for washing and drying uniformly. Therefore, it is difficult to maintain a uniform physical property of the filament as a whole and to exhibit a certain level of physical properties or more. Therefore, It is difficult to apply to industrial use.
특히, 공기층 방사는 필라멘트 수의 증가에 따라 방사 노즐에 토출된 필라멘트의 점착에 대한 공정 안정성 및 냉각 효율이 달라지므로 방사 노즐의 외경, 오리피스의 직경과 간격뿐만 아니라, 노즐에 아라미드 용액을 균일하게 분산시키는 분배판의 홀 수, 홀 간격, 홀 직경 및 피드롤러를 이용할 경우 장력 등의 조건들이 매우 중요하다.Particularly, in the air layer spinning, the process stability and the cooling efficiency for the adhesion of filaments discharged to the spinning nozzle are changed as the number of filaments increases. Therefore, not only the outer diameter of the spinning nozzle, the diameter and the gap of the orifice, The conditions such as the number of holes in the distribution plate, hole spacing, hole diameter, and tension when using the feed roller are very important.
그리고 공기층 길이, 냉각 공기 부여조건, 응고액의 진행방향 및 방사속도에 따른 건조 조건 등을 고려한 새로운 설계가 필요하며 그 설계에 따라 물성 차이를 유발할 수 있다.It is also necessary to design a new design considering the air layer length, the conditions for applying cooling air, the drying direction depending on the direction of the coagulating solution, and the spinning speed.
전방향족 폴리아미드 필라멘트는 미국특허 제 3,869,492 호 및 미국특허 제 3,869,430호 [0002] 등에 게재되어 있는 바와 같이, 방향족 디아민과 방향족 디에시드클로라이드를 N-메틸-2-피롤리돈을 포함하는 중합용매 중에서 중합시켜 전방향족 폴리아미드 중합체를 제조하는 공정과, 상기 중합체를 농황산 용매에 용해시켜 방사원액을 제조하는 공정과, 상기 방사원액을 방사 구금으로부터 방사하여 방사된 방사물을 비응고성 유체층을 통해 응고액 욕조 내로 통과시켜 필라멘트를 형성하는 공정과, 상기 필라멘트를 수세, 건조 및 열처리하는 공정들을 거쳐 제조된다.As described in U.S. Patent No. 3,869,492 and U.S. Patent No. 3,869,430, the wholly aromatic polyamide filaments are produced by reacting an aromatic diamine and an aromatic diacid chloride in a polymerization solvent containing N-methyl-2-pyrrolidone A process for producing a wholly aromatic polyamide polymer, comprising the steps of: preparing a wholly aromatic polyamide polymer by dissolving the polymer in a concentrated sulfuric acid solvent to produce a spinning solution; spinning the spinning solution through a spinneret; Passing through a solid-liquid bath to form filaments, and washing, drying and heat-treating the filaments.
한편 성능이 우수한 방탄재 및 방탄헬멧에 대하여, 한국등록특허 제944502호는 여러 겹으로 적층되는 방탄섬유 사이에 방탄필름을 한 장 이상 적층하여 방탄헬멧을 제조하는 방법으로 무게를 줄이면서 방탄성능 및 내충격성을 향상시킨 방탄헬멧의 제조방법을 제시하고 있다.On the other hand, Korean Patent No. 944502 discloses a method of manufacturing a bulletproof helmet by laminating one or more bulletproof films between several layers of bulletproof fibers, A method of manufacturing a bulletproof helmet having improved impact resistance is proposed.
한국등록특허 제1398748호는 방탄용 복합재료 및 이를 이용하여 제조된 방탄성능 및 경량성이 우수하고 충격에 의한 후면 변형을 최소화할 수 있는 방탄용 헬멧을 제시하고 있으며, 고강도의 방탄소재 원단들을 일정한 형태로 조합함으로써 경량성 및 외충격성을 향상시키는 방법을 제안하고 있다.Korean Patent No. 1398748 discloses a bullet-proof helmet which is excellent in bulletproof performance and light weight, and is capable of minimizing the rear-surface deformation caused by impact, and has a structure in which high- So as to improve the lightweight property and the external impact resistance.
한국등록실용 제313856호는 폴리에틸렌 일방향 섬유에 열가소성수지를 코팅하고, 내/외층에 열경화성 수지가 코팅된 날개모양 및 사각모양의 동일직조 섬유를 적층 가압하여 얇고 가벼우면서도 방탄성능 및 내충격성이 우수한 방탄헬멧을 제시하고 있다.Korean Registration Practical No. 313856 discloses a method in which a thermoplastic resin is coated on a polyethylene unidirectional fiber and laminated and pressurized in the same woven or woven fabric in which a thermosetting resin is coated on the inner and outer layers to form a thin and lightweight bulletproof bulb Helmet is presented.
미국공개특허 2011-0189914호는 상대적으로 가벼우면서도 전체 성능이 향상된 방탄 소재 시스템 제공하기 위하여, 대칭 하이브리드 구조의 방탄 층들을 제시하고 있다.U.S. Published Patent Application No. 2011-0189914 proposes a symmetrical hybrid structure of bulletproof layers to provide a relatively lightweight yet bulky bullet material system with improved overall performance.
이처럼 복합소재를 사용하거나 경화된 소재를 사용하여 방탄헬멧의 성능을 향상시키는 종래 기술들이 존재하나, 여전히 다음과 같은 문제는 해결하지 못하고 있다. 단순히 아라미드 직물에 디핑(dipping)후 적층하여 방탄헬멧을 제조하는 경우 방탄성능은 확보할 수 있지만, 방탄헬멧 쉘의 중량 증가 및 이로 인한 착용감 저하가 발생하는 단점이 있다.There are conventional techniques for improving the performance of a bulletproof helmet using a composite material or a cured material, but the following problems are still not solved. When a bulletproof helmet is manufactured by merely dipping on an aramid fabric and then laminated, bulletproof performance can be ensured, but the bulletproof helmet shell is increased in weight and deterioration in wearing comfort is caused.
디핑(dipping) 방식으로 제조된 프리프레그(Prepreg)를 (이하 ‘딥형 프리프레그’라고 함) 적층하여 방탄 헬멧을 제조하는 경우 딥형 프리그레그의 뻣뻣한 특성으로 인해 쉘 성형 위한 프리프레그를 적층하기는 쉬운 반면, 성형시 접히는 부분이 많아 성형 후 방탄 헬멧 쉘의 중량 편차가 크게 나타났다. 또한 필름형 프리프레그(Film Type prepreg) 에 비해 방탄 성능이 낮아, 동일한 방탄성능을 발현하기 위해선 필름형 프리프래그 대비 방탄 헬멧 쉘 중량이 증가하고, 이로 인해 착용감이 저하되는 단점이 있다.When a bulletproof helmet is manufactured by laminating prepregs prepared by dipping (hereinafter, referred to as 'dipping prepregs'), it is easy to laminate the prepregs for shell molding due to the stiff nature of dipping pregregs On the other hand, since there are many folded portions during molding, the weight deviation of the bullet helmet shell after molding is large. In addition, the bulletproof performance is lower than that of the film type prepreg, and in order to exhibit the same bulletproof performance, the weight of the bulletproof helmet shell is increased compared to the film type prepreg, and the wearing feeling is deteriorated.
위와 같은 문제점을 해결하기 위하여 직물의 한 면에 수지 필름을 라미네이팅한 방탄재를 사용하여 방탄헬멧을 성형하기도 하나 이 경우 방탄재의 형태 안정성이 낮아, 적층시간이 오래 걸리고 접히는 현상이 발생할 가능성이 높다는 문제점이 있다. In order to solve the above problems, a bulletproof helmet may be formed by using a bulletproof material laminated with a resin film on one side of the fabric. However, in this case, the bulletproof material has a low form stability and a long lamination time and a high possibility of folding .
이처럼 방탄헬멧의 경우 두부를 안전하게 보호하기 위하여 특별히 우수한 방탄성능이 요구되지만 그와 동시에 착용감 또한 무시할 수 없으며, 방탄성능과 함께 착용감을 위한 안정성은 항시 적절한 균형을 이루며 유지되어야 한다. In the case of a bullet-proof helmet, a particularly good bulletproof performance is required to safely protect the tofu, but at the same time, the feeling of fit can not be neglected. The bulletproof performance and the stability for comfort must be maintained at an appropriate balance at all times.
따라서, 방탄 헬멧을 제조하는 데 있어 금형 갭, 성형 온도, 성형 시간, 방탄재 패턴, 적층 겹수, 적층 패턴 등 최적화된 공정인자들이 고려되어야 한다는 점은 자명한 사실이다.Therefore, it is obvious that optimized process factors such as mold gap, molding temperature, molding time, bulletproof material pattern, lamination number of layers, lamination pattern and the like should be considered in manufacturing the bulletproof helmet.
직물의 한 면에 수지 필름을 라미네이팅한 방탄재로 헬멧을 성형하는종래의 기술은 직물의 형태 안정성을 유지하기 어려워 헬멧 성형 시 접히는 문제가 발생할 수 있는데, 동일한 갭에서 헬멧 상부 쪽의 방탄재가 접히게 되면 헬멧의 쉘 중량이 증가하고 이에 따라 착용감이 크게 하락하게 된다. 한편 헬멧 귀 부분의 방탄재가 접혀 두꺼워지면 상부는 얇아지지만, 귀 부위가 두꺼워져 헬멧 쉘 중량이 증가하게 된다. The conventional technique of forming a helmet with a bulletproof material laminated with a resin film on one side of a fabric may fail to maintain the shape stability of the fabric and may cause a problem of collapsing when forming the helmet. The weight of the shell of the helmet increases, and thus the fit feeling is greatly reduced. On the other hand, when the bulletproof material of the helmet ear is folded and thickened, the upper part becomes thin, but the ear area is thickened and the helmet shell weight is increased.
이처럼 헬멧 상부가 접히면 귀 부분이 얇아지고, 귀 부분이 접히면 상부가 얇아져 상기의 어떤 경우에도 결과적으로 쉘 중량이 증가하게 되므로, 성형 시 형태 안정성을 확보할 기술이 절실히 요구된다.If the upper portion of the helmet is folded, the ear portion is thinned, and when the ear portion is folded, the upper portion is thinned. As a result, the shell weight is increased in any of the above cases.
본 발명은 상기한 바와 같은 문제점을 해결하기 위하여 안출된 것으로, 방탄재의 안정성을 확보하면서 방탄성능도 함께 향상시킨 경량화된 방탄헬멧에 관한 것이다.Disclosure of Invention Technical Problem [8] The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a lightweight bulletproof helmet which is improved in bulletproof performance while ensuring the stability of the bulletproof material.
본 발명은 상기한 바와 같은 목적을 달성하기 위한 것으로, 필름형 프리프레그 층; 및 상기 필름형 프리프레그 층의 양면에 적층된 딥형 프리프레그를 포함하는 방탄헬멧이다.In order to achieve the above object, the present invention provides a film-type prepreg layer, And a dip type prepreg laminated on both sides of the film type prepreg layer.
본 발명의 상기 필름형 프리프레그는 아라미드 UD 또는 직물에 필름이 적층된 것을 특징으로 하며, 이 때 상기 필름형 프리프레그 100중량부에 대하여 접착액은 7 내지 14 중량부인 것이 바람직하다.The film-type prepreg of the present invention is characterized in that a film is laminated on aramid UD or woven fabric. Preferably, the adhesive liquid is 7 to 14 parts by weight based on 100 parts by weight of the film-type prepreg.
또한, 본 발명의 상기 딥형 프리프레그는 아라미드 UD 또는 직물을 접착액에 디핑한 것을 특징으로 하며, 상기 딥형 프리프레그 100중량부에 대하여 접착액은 15 내지 25 중량부인 것이 바람직하다.In addition, the dip type prepreg of the present invention is characterized by dipping aramid UD or fabric into an adhesive liquid, and the adhesive liquid is preferably 15 to 25 parts by weight with respect to 100 parts by weight of the dipping prepreg.
본 발명의 방탄헬멧은 20개 성형하였을 시에도 쉘 중량의 변동범위가 5g이하인 것을 특징으로 한다.The bulletproof helmet of the present invention is characterized in that the variation range of the shell weight is 5 g or less even when 20 pieces are molded.
본 발명의 방탄헬멧은 안정성이 높아 헬멧 성형에 유리하면서도 성형시간이 단축되며, 딥형 프리프레그 방탄헬멧보다 방탄성능이 향상되고 중량도 가벼운 우수한 방탄헬멧이다.The bulletproof helmet of the present invention is excellent in stability and is capable of shortening the molding time while shortening the molding time. It is an excellent bulletproof helmet which is improved in bulletproof performance and light in weight than the dip type prepreg bulletproof helmet.
이하 실시예를 참조하여 본 발명을 더욱 상세히 설명한다. 본 발명의 실시예 등에서 사용된 용어 등은 본 발명의 이해를 돕기 위하여 예시한 것에 불과할 뿐 본 발명의 청구범위가 이에 한정되어 해석되어서는 아니된다. Hereinafter, the present invention will be described in more detail with reference to Examples. The terms used in the embodiments and the like of the present invention are merely illustrations for the purpose of helping understanding of the present invention, and the claims of the present invention should not be construed as being limited thereto.
아라미드Aramid 원사 제조 Yarn manufacturing
주도프액 100중량부에 대비 고유 점도가 5.5 이상인 폴리(p-페닐렌 테레프탈아미드) 단위 18 내지 25중량부를 황산에서 용해시킨, 방사도프를 제조하는 단계; 상기 방사도프를 방사노즐을 통해 방사한 후, 방사된 원사를 피드롤러를 사용하여 응고조, 수세조, 공기층을 순차적으로 통과시켜 권취하는 단계;를 포함하고, 상기 원사가 응고조를 통과한 후 수세조에 이르기까지의 수세단계에서는 0.3~0.7g/d의 g/d 이하의 장력, 수세조를 통과한 후 공기층을 지나는 건조단계까지는 0.5~2.0g/d의 장력을 적용하고, 모노필라멘트의 데니어가 2.25 내지 4.5데니어인 것을 특징으로 하는 방향족 폴리아미드 멀티필라멘트의 제조방법을 제공한다.Preparing a spinning dope in which 18 to 25 parts by weight of a poly (p-phenylene terephthalamide) unit having an intrinsic viscosity of at least 5.5 relative to 100 parts by weight of the initiator are dissolved in sulfuric acid; And a step of spinning the yarn through a spinning nozzle and then sequentially spinning the yarn through a coagulation bath, a water bath, and an air layer using a feed roller, and after the yarn passes through the coagulation bath In the washing step up to the water washing tank, a tension of 0.3-0.7 g / d g / d or less is applied, a tension of 0.5 ~ 2.0 g / d is applied to the drying step passing through the air layer after passing through the water washing tank, And having a denier of 2.25 to 4.5 denier. The present invention also provides a method for producing an aromatic polyamide multifilament.
상기 방향족폴리아미드 멀티필라멘트의 강도는 20g/d 이상이고, 절단 신도는 3.0 내지 4.5%이며 상기방향족폴리아미드 멀티필라멘트의 초기 탄성률이 450 내지 700g/d인 것이 특징이다. The strength of the aromatic polyamide multifilament is 20 g / d or more, the cut elongation is 3.0 to 4.5%, and the initial modulus of elasticity of the aromatic polyamide multifilament is 450 to 700 g / d.
이때,제작되는 방향족 멀티필라멘트의 총섬도는 400 내지 3000데니어인 것이 바람직하다.At this time, the total fineness of the produced aromatic multifilament is preferably 400 to 3000 denier.
본 발명에서 사용되는 방향족폴리아미드 중합물인 폴리(p-페닐렌 테레프탈아미드)는 p-페닐렌디아민과 테레프탈로일클로라이드의 저온 축중합으로 제조되며 고유점도(I.V.) 5.5 이상인 것이 사용된다. 이때 5.5 미만이면 섬유의 강도가 떨어지게 된다.Poly (p-phenylene terephthalamide), which is an aromatic polyamide polymer used in the present invention, is prepared by low temperature polycondensation of p-phenylenediamine and terephthaloyl chloride and has an intrinsic viscosity (I V) of 5.5 or more. If it is less than 5.5, the strength of the fiber is lowered.
방사는 습식, 건식, 건습식 등이 사용 가능하지만 특히 건습식 방사법에서 균일한 구조의 방향족 폴리아미드 섬유 제조가 가능하므로 고강도 섬유 제조가 가능하다.Wet, dry, dry and wet spinning can be used, but it is possible to manufacture aromatic polyamide fibers with a uniform structure in dry-wet spinning, so that it is possible to manufacture high strength fibers.
본 발명에 따른 건습식 방사공정을 구체적으로 설명하면, 기어펌프로부터 방향족 폴리아미드 용액을 정량적으로 공급하면, 방사노즐을 통해 토출된 방사원액이 수직방향으로 공기층을 통과하여 응고액의 계면에 도달한다. 사용한 방사노즐의 형태는 통상 원형이다. 용도 면에서 타이어코드 및 산업용임을 감안하고, 용액의 균일한 냉각을 위한 노즐 간격을 고려하여, 노즐 개수는 200 내지 1,500 개가 바람직하다.The dry wet spinning process according to the present invention will be described in detail. When the aromatic polyamide solution is quantitatively supplied from the gear pump, the spinning stock solution discharged through the spinning nozzle passes through the air layer in the vertical direction and reaches the interface of the coagulating solution . The shape of the spinning nozzle used is usually circular. Considering the tire cord and industrial use in terms of application, considering the nozzle spacing for uniform cooling of the solution, the number of nozzles is preferably 200 to 1,500.
본 발명에서는 방사속도가 500 내지 1,000m/min이 바람직하며, 이때 방사속도가 500m/min 미만이면 생산성이 떨어지고, 1,000m/min를 초과하면 필라멘트의 물성이 급격히 저하된다.In the present invention, the spinning speed is preferably from 500 to 1,000 m / min. If the spinning speed is less than 500 m / min, the productivity deteriorates. If the spinning speed exceeds 1,000 m / min, the properties of the filament deteriorate sharply.
방사노즐을 통과한 섬유상의 방사원액이 응고액 속에서 응고될 때, 유체의 직경이 크게 되면 표면과 내부 사이에 응고속도의 차이가 커지므로 치밀하고 균일한 조직의 섬유를 얻기가 힘들어진다. 그러므로 방향족 폴리아미드 용액을 방사할 때 동일한 토출량이라도 적절한 공기층을 유지함으로써 방지된 섬유가 보다 가는 직경을 지니며 응고액 속으로 입수할 수 있다. 너무 짧은 공기층 거리는 빠른 표면층 응고와 탈용매 과정에서 발생하는 미세공극 발생분율이 증가하여 연신비 증가에 방해가 되므로 방사속도를 높이기 힘든 반면, 너무 긴 공기층 거리는 필라멘트의 점착과 분위기 온도, 습도의 영향을 상대적으로 많이 받아 공정안전성을 유지하기 힘들다. 상기공기층은 바람직하게는 3 내지 20mm이다.When the fiber stock solution passing through the spinning nozzle coagulates in the coagulating solution, the larger the diameter of the fluid becomes, the greater the difference in the coagulation speed between the surface and the inside becomes, so that it becomes difficult to obtain a dense and uniform tissue fiber. Therefore, when the aromatic polyamide solution is spun, even if the same discharge amount is maintained, a fiber having a smaller diameter can be obtained in the coagulating solution by keeping an appropriate air layer. It is difficult to increase the spinning speed because the too short air layer distance increases the micropore generation rate due to the rapid surface layer coagulation and desolvation process, and it is difficult to increase the spinning speed. On the other hand, the too long air layer distance is affected by the adhesion of the filament, It is difficult to maintain process safety by receiving large amounts. The air layer is preferably 3 to 20 mm.
프레프레그Prefre 적층 Lamination
본 발명은 딥형 및 필름형 프리프레그 층을 제조한 후; 상기 필름형 프리프레그 양면에 딥형 프리프레그를 적층하여 제조한 방탄 헬멧이다.The present invention relates to a process for preparing a dipping-type and film-type prepreg layer; And is a bulletproof helmet produced by laminating a dip type prepreg on both sides of the film type prepreg.
상기 필름형 프리프레그는, 상기의 방법으로 제조된 아라미드 UD 또는 직물에 필름이 적층된 것을 특징으로 하며, 상기 필름형 프리프레그 100중량부에 대하여 접착액 단위 7 내지 14 중량부인 것을 특징으로 한다. 접착액이 7 중량부 미만인 경우 접착력 및 형태 안정성이 떨어져 방탄성능이 저하될 수 있으며, 14 중량부를 초과하는 경우 중량이 증가하고, 수지함량이 과함으로 인해 방탄성능이 저하될 수 있다.The film-type prepreg is characterized in that the film is laminated on the aramid UD or the fabric produced by the above-mentioned method, and the adhesive layer is 7 to 14 parts by weight per 100 parts by weight of the film-type prepreg. When the amount of the adhesive liquid is less than 7 parts by weight, adhesion and shape stability may be deteriorated and the bulletproof performance may be deteriorated. When the amount exceeds 14 parts by weight, the weight increases and the bulletproof performance may be deteriorated due to excessive resin content.
상기 딥형 프리프레그는 아라미드 직물을 접착액에 디핑한 것을 특징으로 하며, 상기 딥형 프리프레그 100중량부에 대하여 상기 접착액 단위 15 내지 25 중량부 이하인 것이 바람직하다. 접착액이 15중량부 미만인 경우 접착부위가 분리될 위험이 있으며, 25 중량부를 초과하는 경우 중량이 증가하고, 수지함량이 과함으로 인해 방탄성능이 저하될 수 있다. The dip type prepreg is characterized in that the aramid fabric is dipped in an adhesive liquid, and the adhesive liquid unit is preferably 15 to 25 parts by weight or less based on 100 parts by weight of the dipping prepreg. When the amount of the adhesive liquid is less than 15 parts by weight, there is a risk that the adhesive portion is separated. When the amount exceeds 25 parts by weight, the weight increases and the bulletproof performance may be deteriorated due to excessive resin content.
본 발명의 적절한 실시예에 따르면 본 발명의 방탄헬멧은 20개 성형 시에도 쉘 중량 변동범위가 5g이하로 매우 우수한 안정성을 가진 것을 특징으로 한다.According to a preferred embodiment of the present invention, the bulletproof helmet of the present invention is characterized in that even when 20 pieces are molded, the shell weight fluctuation range is 5 g or less and the stability is very excellent.
이하, 실시예를 통하여 본 발명을 더욱 상세하게 설명한다. 그러나 이들 실시예는 예시적인 목적일 뿐 발명이 이에 한정되는 것은 아니될 것이다. Hereinafter, the present invention will be described in more detail by way of examples. However, these embodiments are for illustrative purposes only and the invention is not limited thereto.
실시예Example 1 One
㈜효성의 파라 아라미드 섬유인 ALKEX 840de 고강도 원사가 적용된 방탄 헬멧용 직물을 제작하고, 접착액 함량은 중량대비 10wt%로 하여 필름형 프리프레그를 제조한 후(Film Type Prepreg born dry 중량 270g/m2 이하) ; 상기 필름형 프리프레그의 양면에 접착액 함량이 중량대비 20wt%인 딥형 프리프래그를 추가로 적층하여 한국형 방탄 헬멧 L 사이즈를 20개 제조하였다. A fabric for armor helmet to which ALKEX 840de high aramid fiber of Hyosung Co., Ltd. was applied was fabricated, and film type prepreg born dry weight of 270g / m2 or less ); Dip type prepregs each having an adhesive liquid content of 20 wt% were laminated on both sides of the film type prepreg to prepare 20 Korean bulletproof helmet L sizes.
비교예Comparative Example 1 One
실시예 1과 동일한 딥형 프리프레그로만 한국형 방탄 헬멧 L 사이즈를 20개 제조하였다.20 Korean-type bulletproof helmets L were prepared in the same dipping type prepreg as in Example 1. [
비교예Comparative Example 2 2
실시예 1과 동일한 필름형 프리프레그로만 한국형 방탄 헬멧 L 사이즈를 20개 제조하였다.20 Korean-type bulletproof helmets L were produced in the same film-type prepreg as in Example 1. [
비교 및 평가Comparison and evaluation
방탄 성능과 쉘 중량을 비교하여 하기 표 1에 나타내었다.The bulletproof performance and the shell weight are shown in Table 1 below.
* 한국군 헬멧 L 사이즈 기준으로 쉘 중량을 비교하였음* We compared shell weight by size of Korean military helmet L.
** 방탄재의 적층된 총 겹(layer) 수는 모두 동일** The total number of laminated layers of bulletproof material is the same
쉘 중량
변동 범위(g)20 molding
Shell weight
Variable range (g)
상기 표 1에 나타난 바와 같이 본 발명에 의한 경량화된 방탄 헬멧이 방탄성능 뿐만 아니라 중량 변동범위도 우수한 것을 알 수 있다.As shown in Table 1, it can be seen that the lightweight bulletproof helmet according to the present invention has not only bulletproof performance but also excellent weight fluctuation range.
Claims (5)
상기 필름형 프리프레그 층의 양면에 적층된 딥(dip)형 프리프레그를 포함하는 방탄헬멧.
Film type prepreg layer; And
And a dip type prepreg laminated on both sides of the film type prepreg layer.
상기 필름형 프리프레그 층은 아라미드 UD 또는 직물에 필름이 적층된 것을 특징으로 하며, 상기 필름형 프리프레그 층 100중량부에 대하여 접착액 단위 7 내지 14 중량부인 것을 특징으로 하는 방탄헬멧.
The method according to claim 1,
Wherein the film type prepreg layer is formed by laminating a film on an aramid UD or a woven fabric, wherein the film type prepreg layer comprises 7 to 14 parts by weight of the adhesive liquid per 100 parts by weight of the film prepreg layer.
상기 딥(dip)형 프리프레그는 아라미드 UD 또는 직물을 접착액에 디핑(dipping)한 것을 특징으로 하며, 상기 딥(dip)형 프리프레그 100중량부에 대하여 상기 접착액 단위 15 내지 25 중량부인 것을 특징으로 하는 방탄헬멧.
The method according to claim 1,
The dip type prepreg is characterized by dipping the aramid UD or fabric into an adhesive liquid. The dip type prepreg may be a prepreg of 15 to 25 parts by weight per 100 parts by weight of the dip type prepreg A bullet-proof helmet featuring.
상기 딥(dip)형 프리프레그는 한 겹 또는 두 겹 이상이 적층된 것을 특징으로 하는 방탄헬멧.
The method according to claim 1,
Wherein the dip type prepreg is laminated one layer or two or more layers.
상기 방탄헬멧은 20개 성형 시 쉘 중량변동범위가 5g이하인 것을 특징으로 하는 방탄헬멧.The method of claim 1,
Wherein the bulletproof helmet has a shell weight fluctuation range of 5 g or less when forming 20 pieces.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028900A (en) * | 2021-04-13 | 2021-06-25 | 际华集团股份有限公司系统工程中心 | Bulletproof helmet and processing method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100936056B1 (en) * | 2009-08-05 | 2010-01-08 | (주)삼양컴텍 | Method for manufacturing hybrid bulletproof helmet |
| KR20150071128A (en) * | 2013-12-18 | 2015-06-26 | 주식회사 효성 | Ballistic cloth using unidirectional aramid sheet and PE film, method of manufacturing the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100936056B1 (en) * | 2009-08-05 | 2010-01-08 | (주)삼양컴텍 | Method for manufacturing hybrid bulletproof helmet |
| KR20150071128A (en) * | 2013-12-18 | 2015-06-26 | 주식회사 효성 | Ballistic cloth using unidirectional aramid sheet and PE film, method of manufacturing the same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113028900A (en) * | 2021-04-13 | 2021-06-25 | 际华集团股份有限公司系统工程中心 | Bulletproof helmet and processing method thereof |
| CN113028900B (en) * | 2021-04-13 | 2022-03-08 | 际华集团股份有限公司系统工程中心 | Bulletproof helmet and processing method thereof |
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