BR102020010722A2 - COMPOSITE MATERIAL BASED ON THERMOFIXED POLYMER BASED POLYESTER REINFORCED WITH NATURAL FIBER FABRIC OF SEVEN-ISLAND REED, PRODUCTION PROCESS AND USE IN BALLISTIC SHIELDING - Google Patents

COMPOSITE MATERIAL BASED ON THERMOFIXED POLYMER BASED POLYESTER REINFORCED WITH NATURAL FIBER FABRIC OF SEVEN-ISLAND REED, PRODUCTION PROCESS AND USE IN BALLISTIC SHIELDING Download PDF

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BR102020010722A2
BR102020010722A2 BR102020010722-4A BR102020010722A BR102020010722A2 BR 102020010722 A2 BR102020010722 A2 BR 102020010722A2 BR 102020010722 A BR102020010722 A BR 102020010722A BR 102020010722 A2 BR102020010722 A2 BR 102020010722A2
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reed
fabric
composite material
composite
reinforced
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BR102020010722-4A
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Portuguese (pt)
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Sergio Neves Monteiro
Lucas De Mendonça Neuba
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Lucas De Mendonça Neuba
Sergio Neves Monteiro
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2201/00—Use of cellulose, modified cellulose or cellulose derivatives, e.g. viscose, as reinforcement
    • 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
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • 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
    • B32B5/02—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 structural features of a fibrous or filamentary layer
    • B32B5/08—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 structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/045—Reinforcing macromolecular compounds with loose or coherent fibrous material with vegetable or animal fibrous material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/047—Reinforcing macromolecular compounds with loose or coherent fibrous material with mixed fibrous material
    • C08J5/048—Macromolecular compound to be reinforced also in fibrous form
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
    • 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
    • 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
    • F41H5/0414—Layered armour containing ceramic material
    • F41H5/0428—Ceramic layers in combination with additional layers made of fibres, fabrics or plastics
    • 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
    • F41H5/0485—Layered armour containing fibre- or fabric-reinforced layers all the layers being only fibre- or fabric-reinforced layers
    • 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
    • F41H5/06—Shields
    • 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
    • F41H5/06—Shields
    • F41H5/08—Shields for personal use, i.e. hand held shields

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Laminated Bodies (AREA)

Abstract

material compósito à base de polímero termofixo poliéster reforçado com tecido de fibra natural de junco-sete-ilhas, processo produtivo e uso em blindagem balística. a presente invenção apresenta um material composto produzido com polímero termofixo à base de resina poliéster e reforçado com camadas de tecido de junco-sete-ilhas, uma fibra natural identificada cientificamente como cyperus malaccensis. as características deste material composto, tecnicamente conhecido como um compósito, são tais que o tornam tão resistente quanto economicamente vantajoso para emprego em blindagens balísticas multicamadas propondo proteção contra disparos de fuzil com munição de alto poder de impacto. este compósito admite substituir materiais sintéticos com um custo muito mais elevado, atualmente empregados nas forças armadas em todo o mundo, como os tecidos de fibras de aramida conhecidos comercialmente por kevlar®. a presente invenção descreve ainda detalhes técnicos relevantes para a produção do compósito incluído a faixa de composição tal como as condições de temperatura e pressão adequadas ao seu desempenho balístico.composite material based on thermosetting polyester polymer reinforced with natural reed fiber fabric, production process and use in ballistic armor. The present invention presents a composite material produced with a thermosetting polymer based on polyester resin and reinforced with layers of seven-island reed fabric, a natural fiber scientifically identified as cyperus malaccensis. The characteristics of this composite material, technically known as a composite, are such that they make it as resistant as it is economically advantageous for use in multilayer ballistic armor, offering protection against rifle shots with high-impact ammunition. This composite can replace synthetic materials at a much higher cost, currently used in the armed forces around the world, such as aramid fiber fabrics commercially known as Kevlar®. The present invention further describes technical details relevant to the production of the composite including the composition range as well as the temperature and pressure conditions suitable for its ballistic performance.

Description

MATERIAL COMPÓSITO À BASE DE POLÍMERO TERMOFIXO POLIÉSTER REFORÇADO COM TECIDO DE FIBRA NATURAL DE JUNCO-SETE-ILHAS, PROCESSO PRODUTIVO E USO EM BLINDAGEM BALÍSTICACOMPOSITE MATERIAL BASED ON THERMOFIXED POLYMER BASED POLYESTER REINFORCED WITH NATURAL FIBER FABRIC OF SEVEN-ISLAND REED, PRODUCTION PROCESS AND USE IN BALLISTIC SHIELDING Campo da InvençãoField of Invention

[001] A presente invenção descreve um material composto, tecnicamente conhecido como compósito, obtido por reforço do tecido de junco-sete-ilhas, confeccionado a partir de uma fibra natural, Cyperus malaccensis, inserido na matriz polimérica de poliéster. Este compósito tem características adequadas para uso em blindagens balística multicamada visando proteção contra disparo de fuzil com munição de alto poder de impacto. A presente invenção revela também o processo para a fabricação do material.[001] The present invention describes a composite material, technically known as composite, obtained by reinforcing the fabric of reed-seven-islands, made from a natural fiber, Cyperus malaccensis, inserted in the polymeric matrix of polyester. This composite has characteristics suitable for use in multilayer ballistic armor aimed at protection against rifle fire with high impact ammunition. The present invention also discloses the process for manufacturing the material.

Antecedentes da InvençãoBackground of the Invention

[002] Materiais compostos de matriz polimérica reforçada com fibras ou tecidos naturais, produzidos a partir destas fibras, vem sendo utilizados desde o meado do século 20 em setores industriais como o de construção civil e do automobilístico. No entanto, não há registro de utilização em blindagens para proteção balística.[002] Materials composed of a polymer matrix reinforced with fibers or natural fabrics, produced from these fibers, have been used since the mid-20th century in industrial sectors such as civil construction and automobiles. However, there is no record of use in armor for ballistic protection.

[003] Na proteção balística empregada em viaturas militares e coletes pessoais, além de materiais metálicos e cerâmicos, também possuem compostos poliméricos reforçados com fibras ou tecidos sintéticos.[003] In the ballistic protection used in military vehicles and personal vests, in addition to metallic and ceramic materials, they also have polymeric compounds reinforced with fibers or synthetic fabrics.

[004] Isoladamente, materiais compostos poliméricos reforçados com tecidos naturais ou fibras não possuem desempenho balístico satisfatório. Entretanto, como parte intermediária de um sistema multicamada, apresentam desempenho comparável aos materiais sintéticos e um custo muito menor.[004] In isolation, polymeric composite materials reinforced with natural fabrics or fibers do not have satisfactory ballistic performance. However, as an intermediate part of a multilayer system, they have performance comparable to synthetic materials and at a much lower cost.

[005] O documento de patente PI 8800573-A (Brasil, 1989) descreve um “Compósito rígido de matriz de resina poliéster, fenólica ou poliamida reforçada com filamentos p-aramida contínuos revestidos com cerca de 0,2 a 5% em peso, de um modificador de adesão sólido, de desempenho balístico significantemente aperfeiçoado, peso mais leve, e densidade de área reduzida para um dado nível de desempenho balístico”, contudo não trata de fibra ou tecido natural, somente a poliamida que é sintética e cara.[005] Patent document PI 8800573-A (Brazil, 1989) describes a “Rigid composite of polyester, phenolic or polyamide resin matrix reinforced with continuous p-aramid filaments coated with about 0.2 to 5% by weight, of a solid adhesion modifier, of significantly improved ballistic performance, lighter weight, and reduced area density for a given level of ballistic performance”, however it is not about natural fiber or fabric, only polyamide which is synthetic and expensive.

[006] O documento WO2010/091476-A1 (EUA, 2010), descreve um “Tecido balístico composto de 65 a 80% de fibras de poliamida entrelaçadas com 20 a 35% de fibras animal ou algodão. A fibra animal preferida é a lã e a mistura preferida é 25% lã com 75% de fibras poliaramida. O poliaramida preferido é o Kevlar”. Diferente da presente invenção, somente ¼ das fibras de fibras naturais, animal ou algodão, são mescladas com ¾ de fibras sintéticas.[006] WO2010/091476-A1 (USA, 2010), describes a “Ballistic fabric composed of 65 to 80% of polyamide fibers interwoven with 20 to 35% of animal fibers or cotton. The preferred animal fiber is wool and the preferred blend is 25% wool with 75% polyaramid fibers. The preferred polyaramid is Kevlar”. Unlike the present invention, only ¼ of the fibers of natural fibers, animal or cotton, are blended with ¾ of synthetic fibers.

[007] O documento JP5877431-132 (Japão, 2011) descreve um “Material compósito reforçado com fibra compreende um fio de fibra compósita 1 com ondulação que é formado pelo ponto enrolado de um fio envolvente 5 de um fio de fibra sintética termoplástica num feixe de fibra de carbono 3 e / ou um fio de fibra natural 4 com estes fios sujeitos a tensão variada”. Entretanto, o compósito só utiliza fibras sintéticas, termoplástica ou de carbono.[007] The document JP5877431-132 (Japan, 2011) describes a “Fiber-reinforced composite material comprises a composite fiber yarn 1 with undulation which is formed by the wound stitch of an enveloping yarn 5 of a thermoplastic synthetic fiber yarn in a bundle of carbon fiber 3 and/or a yarn of natural fiber 4 with these yarns subjected to varying tension”. However, the composite only uses synthetic, thermoplastic or carbon fibers.

[008] O documento WO2012/093167-A1 (França, 2012) descreve um “Material compósito injetável, incluindo: (a) 28 a 95% em peso de um copolímero de polipropileno / polietileno; (b) 0 a 10% em peso de um intensificador de fluxo; (c) 1 a 20% em peso de um modificador de impacto; (d) 1 a 20% de agente compatibilizante; e (e) 3 a 70% em peso de fibras naturais, em que o copolímero de polipropileno / polietileno forma uma matriz. A invenção também se refere ao método para preparar o dito material compósito, bem como a um método para usá-lo na fabricação de peças por injeção ou sobremoldagem”. Embora trate de compósito reforçado com fibra natural, não há indicação para uso em blindagem balística.[008] WO2012/093167-A1 (France, 2012) describes an “Injectable composite material, including: (a) 28 to 95% by weight of a polypropylene/polyethylene copolymer; (b) 0 to 10% by weight of a flow enhancer; (c) 1 to 20% by weight of an impact modifier; (d) 1 to 20% compatibilizing agent; and (e) 3 to 70% by weight of natural fibers, wherein the polypropylene/polyethylene copolymer forms a matrix. The invention also relates to a method for preparing said composite material, as well as a method for using it in the manufacture of parts by injection or overmolding”. Although it is a natural fiber reinforced composite, there is no indication for use in ballistic armor.

[009] O documento CN207904438-V (Chile, 2018) descreve “Fio resistente e durável a base da mistura de juta natural e PET, o qual é constituído por um compósito que compreende a camada da fibra da juta, a camada da fibra do polipropileno, a camada da fibra do PET, a camada da fibra do poliuretano, a camada adesiva e a camada de fibra de nylon”. Embora contenha fibra de juta, não há indicação de que o fio possa ser utilizado em blindagem.[009] Document CN207904438-V (Chile, 2018) describes “Strong and durable yarn based on a mixture of natural jute and PET, which consists of a composite comprising the layer of jute fiber, the layer of polypropylene, the PET fiber layer, the polyurethane fiber layer, the adhesive layer and the nylon fiber layer”. Although it contains jute fiber, there is no indication that the wire can be used in shielding.

[0010] Nenhum dos documentos de patente mencionados anteriormente possuem semelhança à presente invenção pois não tratam especificamente de compósito reforçado exclusivamente com fibras contínuas e alinhadas de juncosete-ilhas para uso em blindagem balística multicamada.[0010] None of the patent documents mentioned above are similar to the present invention as they do not specifically deal with composite reinforced exclusively with continuous and aligned reed-island fibers for use in multilayer ballistic armor.

Sumário da InvençãoSummary of the Invention

[0011] O objetivo geral da invenção é confeccionar um material compósito de matriz polimérica reforçada com tecido de junco-sete-ilhas, a ser utilizado pela primeira vez como parte de um sistema de blindagem balística multicamada.[0011] The general objective of the invention is to make a composite material of polymeric matrix reinforced with reed-seven-islands fabric, to be used for the first time as part of a multilayer ballistic armor system.

[0012] O objetivo específico é fabricar placas de material compósito à base de 70% em volume de polímero poliéster reforçado com 30% em volume de tecido de junco-sete-ilhas uniformemente acamado.[0012] The specific objective is to manufacture composite material boards based on 70% by volume of reinforced polyester polymer with 30% by volume of uniformly layered reed-seven-island fabric.

[0013] A fabricação das placas de compósito poliéster com tecido de junco-seteilhas é feita em um molde metálico sob pressão de 5 MPa por 24 horas à temperatura ambiente. Após a retirada do molde, a placa sofre ainda a pós-cura em temperatura e tempo específicos.[0013] The manufacture of polyester composite boards with reed-seal fabric is carried out in a metallic mold under pressure of 5 MPa for 24 hours at room temperature. After the mold is removed, the slab undergoes post-curing at a specific temperature and time.

[0014] É objetivo final desta invenção o uso de placa de material compósito como parte de um sistema de blindagem multicamada para proteção pessoal e de viaturas militares contra disparo de fuzil com munição de alto poder de impacto.[0014] It is the final objective of this invention the use of composite material plate as part of a multilayer armoring system for personal protection and military vehicles against rifle firing with high impact ammunition.

Descrição Detalhada da InvençãoDetailed Description of the Invention

[0015] Os materiais empregados nesta invenção correspondem a: (i) resina poliéster insaturada ortoftálica rígida e de alta viscosidade juntamente com o catalisador à base de metil-etil cetona, ambos comercialmente disponíveis no Brasil; (ii) fibras de junco-sete-ilhas se encontra disponível na região do Vale do Ribeira.[0015] The materials used in this invention correspond to: (i) rigid and high viscosity orthophthalic unsaturated polyester resin together with the catalyst based on methyl ethyl ketone, both commercially available in Brazil; (ii) seven-island reed fiber is available in the Vale do Ribeira region.

[0016] A fabricação da placa de compósito é feita em um molde de aço com uma base de enchimento e uma tampa de fechamento. Parafusos ligando as duas partes do molde permitem total vedação e facilidade na desmoldagem.[0016] The composite board manufacturing is done in a steel mold with a filling base and a closing cap. Screws connecting the two parts of the mold allow total sealing and ease of demoulding.

[0017] O molde de aço descrito no item [0016] é produzido sob encomenda em oficina mecânica especializada, encontrada em qualquer grande cidade do país.[0017] The steel mold described in item [0016] is produced to order in a specialized mechanical workshop, found in any large city in the country.

[0018] Para facilitar a desmoldagem da placa é utilizada, antes do processo, graxa de silicone, disponível no Brasil, aplicada nas superfícies internas do molde.[0018] To facilitate the demolding of the plate, silicone grease, available in Brazil, is used before the process, applied to the internal surfaces of the mold.

[0019] O processo de fabricação consiste em intercalar cortes retangulares de tecido de junco-sete-ilhas, de mesma dimensão interna do molde, alternando com resina poliéster ortoftálica misturada com o catalisador à base de metil-etil cetona. A quantidade intercalada de 30% de tecido de junco-sete-ilhas é antecipadamente determinada com base na densidade dos materiais utilizados.[0019] The manufacturing process consists of inserting rectangular sections of reed-seven-island fabric, of the same internal dimension of the mold, alternating with orthophthalic polyester resin mixed with the catalyst based on methyl-ethyl ketone. The interleaved amount of 30% of reed-seven-island fabric is determined in advance based on the density of the materials used.

[0020] Após o preenchimento do molde com tecido de junco-sete-ilhas intercalado com mistura líquida resina/catalisador, é colocada a tampa do molde, fechando-a com auxílio de parafusos. O molde preenchido é fechado e então levado a uma presa hidráulica com capacidade para 30 toneladas, a qual é comumente disponível no Brasil.[0020] After filling the mold with reed-seven-island fabric interspersed with a resin/catalyst liquid mixture, the mold cover is placed, closing it with the aid of screws. The filled mold is closed and then taken to a hydraulic clamp with a capacity of 30 tons, which is commonly available in Brazil.

[0021] O molde instalado na prensa é então submetido a uma pressão de 5 MPa que permite completo escoamento da mistura líquida resina/catalisador por entre os fios do tecido de junco-sete-ilhas.[0021] The mold installed in the press is then subjected to a pressure of 5 MPa that allows complete flow of the resin/catalyst liquid mixture through the threads of the reed-seven-islands fabric.

[0022] O molde preenchido e sob pressão permanece por 24 horas à temperatura ambiente, o que permite endurecimento da resina poliéster pela ação do catalisador metil-etil cetona.[0022] The mold, filled and under pressure, remains for 24 hours at room temperature, which allows the polyester resin to harden by the action of the methyl-ethyl ketone catalyst.

[0023] O desmoldamento da placa é realizado por ação inversa dos parafusos que vedaram a placa.[0023] The demolding of the plate is carried out by the inverse action of the screws that sealed the plate.

[0024] A placa desmoldada é levada a uma estufa para pós-cura da matriz poliéster em temperatura e tempo controlados para que se atinja as máximas resistência e tenacidade do compósito.[0024] The demolded plate is taken to an oven for post-curing the polyester matrix at a controlled temperature and time in order to reach the maximum strength and tenacity of the composite.

Uso do Compósito em Blindagem BalísticaUse of Composite in Ballistic Armor

[0025] O material compósito de poliéster reforçada com tecido de junco-seteilhas tem como principal finalidade o uso na forma de uma placa para um sistema de blindagem multicamada visando a proteção contra disparo de fuzil com munição de alto poder de impacto. Esta proteção corresponde ao nível III da norma internacional relacionada com projétil calibre 7,62 mm ou 5,56 mm.[0025] The composite material of polyester reinforced with reed-bolt fabric has as its main purpose the use in the form of a plate for a multilayer armoring system aimed at protecting against rifle firing with high impact ammunition. This protection corresponds to level III of the international standard related to projectile caliber 7.62 mm or 5.56 mm.

[0026] No sistema de blindagem multicamada, plaquetas de cerâmica compõem a camada frontal responsável pela erosão do projétil e dissipação de boa parte da energia de impacto. A placa de compósito, como segunda camada, é colada às plaquetas cerâmicas com adesivo de poliuretano.[0026] In the multilayer armor system, ceramic platelets make up the front layer responsible for projectile erosion and dissipation of much of the impact energy. The composite plate, as a second layer, is bonded to the ceramic platelets with polyurethane adhesive.

[0027] A placa de compósito, como segunda camada, tem como função capturar a nuvem de fragmentos resultantes do impacto do projétil contra a camada frontal de plaquetas cerâmicas.[0027] The composite plate, as a second layer, has the function of capturing the cloud of fragments resulting from the impact of the projectile against the front layer of ceramic platelets.

[0028] A captura dos fragmentos pela placa de compósito ocorre por mecanismos de incrustação nas fibras do tecido de junco-sete-ilhas. Os fragmentos, tanto metálicos do projétil quanto cerâmicos da camada frontal são muito mais duros e penetram com facilidade nas fibras de junco-sete-ilhas mais macias.[0028] The capture of the fragments by the composite plate occurs by incrustation mechanisms in the fibers of the reed-seven-islands fabric. The fragments, both metallic from the projectile and ceramic from the front layer, are much harder and easily penetrate the softer seven-island reed fibers.

[0029] A quantidade de 30% de tecido de junco-sete-ilhas no compósito é suficiente para evitar a fragmentação da frágil matriz polimérica de poliéster. Isto permite que a placa de compósito mantenha sua integridade para proteção contra disparos subsequentes de fuzil.[0029] The amount of 30% of reed-seven-island fabric in the composite is sufficient to avoid fragmentation of the fragile polymeric matrix of polyester. This allows the composite plate to maintain its integrity to protect against subsequent rifle fire.

[0030] O desempenho balístico da placa de compósito de poliéster reforçada com tecido de junco-sete-ilhas é comparável ao de placas, com a mesma dimensão, feitas com tecidos sintéticos como o Kevlar que é pelo menos 5 vezes mais caro.[0030] The ballistic performance of the polyester composite board reinforced with reed-seven-island fabric is comparable to that of boards, with the same dimension, made with synthetic fabrics such as Kevlar which is at least 5 times more expensive.

Processo de PreparoPreparation Process

[0031] Em uma concretização preferencial da invenção, o processo de preparo de material compósito compreende as etapas de:[0031] In a preferred embodiment of the invention, the process of preparing composite material comprises the steps of:

[0032] a) preparar os tecidos de junco-sete-ilhas.[0032] a) prepare the fabrics of reed-seven-islands.

[0033] b) preparar a quantidade de tecido de junco-sete-ilhas para 30% vol. do compósito.[0033] b) prepare the amount of reed-seven-islands fabric to 30% vol. of the composite.

[0034] c) Preparar resina poliéster para produção do compósito.[0034] c) Prepare polyester resin for composite production.

[0035] d) verter a resina poliéster na matriz metálica até molhar por completo o fundo da mesma.[0035] d) pour the polyester resin into the metallic matrix until the bottom is completely wet.

[0036] e) adicionar aos poucos os tecidos de junco-sete-ilhas juntamente com a resina poliéster, garantido que todas os tecidos sejam molhados pela resina.[0036] e) gradually add the reed-seven-island fabrics together with the polyester resin, ensuring that all fabrics are wetted by the resin.

[0037] f) realizar a prensagem dessa mistura em temperatura ambiente através de uma prensa hidráulica com 5 toneladas de força durante 24h.[0037] f) press this mixture at room temperature through a hydraulic press with 5 tons of force for 24 hours.

[0038] g) realizar a desmoldagem da placa de compósito.[0038] g) demolding the composite plate.

[0039] h) realizar a montagem da blindagem balística multicamada[0039] h) perform the assembly of the multilayer ballistic armor

[0040] A importância de fabricar um compósito é a homogeneidade e continuidade em suas propriedades, que melhoram a dissipação da energia de impacto do projétil mantendo a sua integridade após essa solicitação. Em conjunto com material cerâmico, pode ser aplicado em coletes contra disparos de calibre 9 mm (nível III-A) de modo que esses sejam otimizados para suportar ameaças de nível III.[0040] The importance of manufacturing a composite is the homogeneity and continuity in its properties, which improve the dissipation of the projectile's impact energy, maintaining its integrity after this request. In conjunction with ceramic material, it can be applied to 9mm (tier III-A) bulletproof vests so that they are optimized to withstand Tier III threats.

Claims (10)

Material compósito à base de resina poliéster e reforçada com tecido de junco-sete-ilha, processo para sua produção, e seu uso em blindagem balística multicamada, caracterizado por compreender o processo de fabricação de um composto de polímero termofixo e reforçado com tecido de junco-sete-ilhas e seu uso em blindagem balística.Composite material based on polyester resin and reinforced with reed-seven-island fabric, process for its production, and its use in multilayer ballistic armor, characterized by comprising the manufacturing process of a thermosetting polymer composite reinforced with reed fabric -seven-islands and their use in ballistic armor. Material compósito à base de resina poliéster e reforçada com tecido de junco-sete-ilhas, processo para sua produção, e seu uso em blindagem balística multicamada, de acordo com a reivindicação 1, caracterizado por ser um compósito, que possui boa adesão da fase dispersa, que é um tecido de fibra natural com a matriz polimérica como fase contínua.Composite material based on polyester resin and reinforced with reed-seven-island fabric, process for its production, and its use in multilayer ballistic armor, according to claim 1, characterized by being a composite, which has good adhesion of the phase dispersed, which is a natural fiber fabric with the polymer matrix as a continuous phase. Material compósito à base de resina poliéster e reforçada com tecido de junco-sete-ilhas, processo para sua produção, e seu uso em blindagem balística multicamada, de acordo com a reivindicação 2, caracterizado por um compósito processado com matriz de polímero poliéster incorporada com 30% em volume de tecido de junco-sete-ilhas.Composite material based on polyester resin and reinforced with reed-seven-island fabric, process for its production, and its use in multilayer ballistic armor, according to claim 2, characterized by a composite processed with a polyester polymer matrix incorporated with 30% by volume of reed-seven-island fabric. Material compósito à base de resina poliéster reforçada com fibra de juncosete-ilhas, processo para sua produção, e seu uso em blindagem balística multicamada, de acordo com as reivindicações 2 e 3, caracterizado por um processo de preparo do compósito compreendendo as seguintes etapas:
Utilização de um molde metálico retangular que possui as dimensões de 1 cm de espessura por 15 cm de comprimento e 12 cm de largura;
Uso de desmoldante de graxa de silicone, aplicada na superfície interna do molde;
Acomodação do tecido de junco-sete-ilhas, correspondente à proporção desejada de 30% em volume de tecido dentro de molde metálico adequado;
Adição de resina poliéster, ainda fluida, fechamento do molde com a tampa da matriz; e
Aplicação no molde tampado, já preenchido com tecido de junco-seteilhas e resina poliéster, uma carga de compressão de 5 MPa na temperatura ambiente por um período de 24 horas.Composite material based on polyester resin reinforced with reed-island fiber, process for its production, and its use in multilayer ballistic armor, according to claims 2 and 3, characterized by a process for preparing the composite comprising the following steps:
Use of a rectangular metallic mold that has the dimensions of 1 cm thick by 15 cm long and 12 cm wide;
Use of silicone grease release agent, applied to the inner surface of the mold;
Accommodation of the reed-seven-island fabric, corresponding to the desired proportion of 30% by volume of fabric within a suitable metallic mold;
Addition of polyester resin, still fluid, closing the mold with the die cap; and
Application in the capped mold, already filled with reed fabric and polyester resin, a compression load of 5 MPa at room temperature for a period of 24 hours. Material compósito à base de resina poliéster e reforçada com tecido de junco-sete-ilhas, processo para sua produção, e seu uso em blindagem balística multicamada, de acordo com as reivindicações 3 e 4, caracterizado por ser feita a produção de placas com espessura de até 1 cm e dimensões laterais de 15 cm x 12 cm em moldes de aço carbono especificados para tal.Composite material based on polyester resin and reinforced with reed-seven-island fabric, process for its production, and its use in multilayer ballistic armor, according to claims 3 and 4, characterized in that the production of plates with thickness of up to 1 cm and side dimensions of 15 cm x 12 cm in carbon steel molds specified for this purpose. Material compósito à base de resina poliéster e reforçada com tecido de junco-sete-ilhas, processo para sua produção, e seu uso em blindagem balística multicamada, de acordo com a reivindicação 4, caracterizado por ser feita a desmoldagem da placa com auxílio de parafusos de encaixe.Composite material based on polyester resin and reinforced with reed-seven-island fabric, process for its production, and its use in multilayer ballistic armor, according to claim 4, characterized in that the plate is demolded with the aid of screws fitting. Material compósito à base de resina poliéster e reforçada com tecido de junco-sete-ilhas, processo para sua produção, e seu uso em blindagem balística multicamada, de acordo com a reivindicação 6, caracterizado por produzir uma placa de compósito com tecido de junco-sete-ilhas reforçando uma matriz poliéster própria para uso como camada em blindagem balística visando proteção contra disparo de fuzil com munição calibres 7,62 mm ou 5,56 mm.Composite material based on polyester resin and reinforced with reed-seven-islands fabric, process for its production, and its use in multilayer ballistic armor, according to claim 6, characterized by producing a composite plate with reed fabric. seven-islands reinforcing a polyester matrix suitable for use as a layer in ballistic armor for protection against rifle fire with 7.62 mm or 5.56 mm caliber ammunition. Material compósito à base de resina poliéster reforçada com tecido de juncosete-ilhas, processo para sua produção, e seu uso em blindagem balística multicamada, de acordo com a reivindicação 7, caracterizado por ser utilizada na blindagem multicamada, cuja a placa de compósito da presente invenção está fixada com adesivo poliuretano a uma camada frontal de cerâmica, responsável por erodir o projétil e atenuar seu impacto.Composite material based on polyester resin reinforced with reed-island fabric, process for its production, and its use in multilayer ballistic armor, according to claim 7, characterized in that it is used in multilayer armor, whose composite plate of the present invention is fixed with polyurethane adhesive to a front layer of ceramic, responsible for eroding the projectile and attenuating its impact. Material compósito à base de resina poliéster reforçada com tecido de juncosete-ilhas, processo para sua produção, e seu uso em blindagem balística multicamada, de acordo com a reivindicação 8, caracterizado por ser um compósito no sistema balístico multicamada, cuja a função é capturar os fragmentos da cerâmica e do projétil resultantes do impacto frontal, além de dissipar parte da energia cinética advinda do projétil.Composite material based on polyester resin reinforced with reed-island fabric, process for its production, and its use in multilayer ballistic armor, according to claim 8, characterized by being a composite in the multilayer ballistic system, whose function is to capture the ceramic and projectile fragments resulting from the frontal impact, in addition to dissipating part of the kinetic energy coming from the projectile. Material compósito à base de resina poliéster reforçada com tecido de juncosete-ilhas, processo para sua produção, e seu uso em blindagem balística multicamada, de acordo com as reivindicações 7, 8 e 9, caracterizado por ser um sistema de blindagem balística que otimiza coletes contra ameaças nível III-A para coletes contra ameaças nível III.Composite material based on polyester resin reinforced with reed-island fabric, process for its production, and its use in multilayer ballistic armor, according to claims 7, 8 and 9, characterized by being a ballistic armor system that optimizes vests Level III-A Threat Vests for Level III Threat Vests.
BR102020010722-4A 2020-05-28 2020-05-28 COMPOSITE MATERIAL BASED ON THERMOFIXED POLYMER BASED POLYESTER REINFORCED WITH NATURAL FIBER FABRIC OF SEVEN-ISLAND REED, PRODUCTION PROCESS AND USE IN BALLISTIC SHIELDING BR102020010722A2 (en)

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