BRPI1007429A2 - material compósito estrututral. - Google Patents

material compósito estrututral. Download PDF

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Publication number
BRPI1007429A2
BRPI1007429A2 BRPI1007429-5A BRPI1007429A BRPI1007429A2 BR PI1007429 A2 BRPI1007429 A2 BR PI1007429A2 BR PI1007429 A BRPI1007429 A BR PI1007429A BR PI1007429 A2 BRPI1007429 A2 BR PI1007429A2
Authority
BR
Brazil
Prior art keywords
structural
fibers
composite material
resin component
viscoelastic
Prior art date
Application number
BRPI1007429-5A
Other languages
English (en)
Inventor
Carmelo Luca Restuccia
Carmelo Lofaro
Original Assignee
Cytec Technology Corp.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=41666383&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BRPI1007429(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Cytec Technology Corp. filed Critical Cytec Technology Corp.
Publication of BRPI1007429A2 publication Critical patent/BRPI1007429A2/pt
Publication of BRPI1007429B1 publication Critical patent/BRPI1007429B1/pt

Links

Classifications

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    • 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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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/08—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers
    • B29C70/083—Combinations of continuous fibres or fibrous profiled structures oriented in one direction and reinforcements forming a two dimensional structure, e.g. mats
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

MATERIAL COMPÓSITO ESTRUTURAL, E, ESTRUTURA EM SANDUÍCHE DO COMPÓSITO CURADA OU NÃO CURADA. Um material compósito tem uma interfolha viscoelástica compreendendo uma camada não tecida, que pode ser posicionada semidobrada neste.

Description

“MATERIAL COMPÓSITO ESTRUTURAL, E, ESTRUTURA EM SANDUÍCHE DE COMPÓSITO CURADA OU NÃO CURADA”
FUNDAMENTOS DA INVENÇÃO Campo da invenção Materiais compósitos tendo propriedades de amortecimento acústico e vibracional são divulgados. Em particular, materiais compósitos que contêm uma interfolha viscoelástica são úteis, por exemplo, em estruturas encontradas em aeronaves, tais como revestimentos, vigas e armações de fuselagem. Também considerados são métodos de fabricar o material —compósitoe as estruturas e aeronaves que contêm o material compósito. Descrição da Técnica Relacionada Compósitos de matriz polimérica reforçados com fibra (PMCs) são materiais estruturais de alto desempenho que são comumente usados em aplicações que requerem resistência a ambientes agressivos, resistência alta, e/ou peso baixo. Exemplos de tais aplicações incluem componentes de aeronave (por exemplo, caudas, asas, fuselagens, hélices), cascos de barcos, e armações de bicicletas. PMCs podem compreender camadas de fibras que são ligadas juntas com um material de matriz, tal como uma resina polimérica. As fibras reforçam a matriz, que porta a maioria da carga sustentada pelo — compósito, enquanto a matriz porta uma porção em minoria da carga sustentada pelo compósito e também transfere a carga das fibras quebradas para as fibras intactas. Desta maneira, PMCs podem suportar cargas maiores do que a matriz ou a fibra podem suportar sozinhas. Além disso, adaptando-se as fibras de reforço em uma geometria ou orientação particulares, o compósito — pode ser eficientemente designado para minimizar o peso e o volume. Numerosos processos têm sido desenvolvidos para a fabricação de PMCs. Exemplos podem incluir deposição úmida em camadas, pré-impregnação, e infusão líquida. Em deposição úmida em camadas, a fibra de reforço é umedecida com o material de matriz, colocada em uma cavidade —demolde, e deixada endurecer ou curar. Este processo pode ser realizado em

Claims (9)

REIVINDICAÇÃO
1. Material compósito estrutural curado ou não curado, caracterizado pelo fato de que compreende um componente estrutural em uma forma de uma pluralidade — decamadas de fibrastêxtil que compreende fibras estruturais; um componente de resina de termocura; e uma interfolha viscoelástica posicionada entre um par de camadas de fibras têxtil adjacente, dita interfolha viscoelástica compreendendo pelo menos uma camada fina de material não tecido, que é compreendido de fibras elastoméricas termoplásticas; em que a interfolha viscoelástica e o componente estrutural são parcial ou completamente impregnados com o componente de resina de termocura; e em que o componente de resina tem uma temperatura de transição vítrea (Tg) que é maior do que aquela da interfolha viscoelástica.
2. Material compósito estrutural de acordo com a reivindicação 1, caracterizado pelo fato de que o componente de resina compreende um epóxido.
3. Material compósito estrutural de acordo com a reivindicação 1,caracterizado pelo fato de que as fibras estruturais compreendem fibras de carbono.
4. Material compósito estrutural de acordo com a reivindicação 1, caracterizado pelo fato de que a interfolha viscoelástica é completamente impregnada com o componente de resina de termocura.
5. Material compósito estrutural de acordo com a reivindicação 1, caracterizado pelo fato de que as fibras elastoméricas termoplásticas no material não tecido são feitas de pelo menos um polímero selecionado do grupo consistindo em elastômeros termoplásticos estirênicos, poliolefinas elastoméricas e uma combinação destes.
6. Material compósito estrutural de acordo com a reivindicação i 1, caracterizado pelo fato de que o material não tecido compreende um elastômero termoplástico estirênico que é um copolímero de bloco tendo um segmento elastomérico com uma Tg mais baixa e segmentos estirênicos com —Tgmaisalto,eque forma uma estrutura separada de microfase na temperatura ambiente.
7. Material compósito estrutural de acordo com a reivindicação 1, caracterizado pelo fato de que a interfolha viscoelástica é tratada por plasma para obter uma tensão superficial de pelo menos 35 dina/em (0,00035 N/cm)em ambos os lados.
8. Estrutura em sanduíche de compósito curada ou não curada, caracterizada pelo fato de que compreende um primeiro revestimento e um segundo revestimento; e um núcleo estrutural entre o primeiro revestimento e o segundo revestimento; em que cada um dos primeiro e segundo revestimentos compreende uma pluralidade de camadas de fibras têxtil compreendendo fibras estruturais, uma interfolha viscoelástica posicionada entre um par de camadas de fibras têxtil adjacente e um componente de resina termocurado, em que a interfolha viscoelástica compreende pelo menos uma camada fina de material não tecido que é compreendida de fibras elastoméricas termoplásticas, e o componente de resina de termocura tem uma temperatura de transição vítrea (Tg) que é maior do que aquela da interfolha viscoelástica, e em que a interfolha viscoelástica e as camadas de fibras têxtil são parcialmente ou completamente impregnadas com o componente de resina de termocura.
9. Estrutura em sanduíche de compósito curada ou não curada de acordo com a reivindicação 8, caracterizada pelo fato de que a interfolha viscoelástica é revestida pelo menos em um lado com uma formulação de adesivo estrutural.
BRPI1007429-5A 2009-01-06 2010-01-05 material compósito estrutural BRPI1007429B1 (pt)

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KR20110107838A (ko) 2011-10-04
ES2596883T3 (es) 2017-01-12
CA2748926C (en) 2017-06-27
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AU2010204209A1 (en) 2011-07-07
TWI474927B (zh) 2015-03-01
BRPI1007429B1 (pt) 2021-02-02
US20100170746A1 (en) 2010-07-08
WO2010079322A1 (en) 2010-07-15
JP2012514546A (ja) 2012-06-28
CA2748926A1 (en) 2010-07-15
MY155107A (en) 2015-09-15
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