JP3326984B2 - Organic fiber reinforced resin material - Google Patents
Organic fiber reinforced resin materialInfo
- Publication number
- JP3326984B2 JP3326984B2 JP20988494A JP20988494A JP3326984B2 JP 3326984 B2 JP3326984 B2 JP 3326984B2 JP 20988494 A JP20988494 A JP 20988494A JP 20988494 A JP20988494 A JP 20988494A JP 3326984 B2 JP3326984 B2 JP 3326984B2
- Authority
- JP
- Japan
- Prior art keywords
- organic fiber
- resin
- fiber
- commercially available
- fabric
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
Landscapes
- Reinforced Plastic Materials (AREA)
- Laminated Bodies (AREA)
- Nonwoven Fabrics (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、有機繊維強化樹脂材料
に関し、特に有機繊維強化樹脂材の曲げ/圧縮変形にお
ける層間せん断破壊を防止し、曲げ/圧縮強度を向上さ
せ、且つ樹脂の含浸性を改良することにより、機械的特
性に優れる有機繊維強化樹脂材料に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an organic fiber reinforced resin material, and more particularly to an organic fiber reinforced resin material which prevents interlaminar shear fracture in bending / compression deformation, improves bending / compression strength, and impregnates resin. The present invention relates to an organic fiber reinforced resin material having excellent mechanical properties by improving the following.
【0002】[0002]
【従来技術】従来の有機繊維強化熱可塑性樹脂材料とし
ては、アラミド繊維材料/熱可塑性樹脂複合材料が提案
され(特開昭63−87228号公報、特開平1−28
0199号公報、特開平2−144901号公報、特開
平3−76614号公報、特開平3−121135号公
報、特開平3−130118号公報及び特開平3−16
1331号公報)、更にナイロン繊維材料又はポリエス
テル繊維/熱可塑性樹脂複合材料が提案されている(特
開昭59−207966号公報、特開平1−43532
号公報、特開平2−124956号公報、特開平3−7
6614号公報及び特開平3−130118号公報)。2. Description of the Prior Art As a conventional organic fiber reinforced thermoplastic resin material, an aramid fiber material / thermoplastic resin composite material has been proposed (JP-A-63-87228, JP-A-1-228).
0199, JP-A-2-144901, JP-A-3-76614, JP-A-3-121135, JP-A-3-130118 and JP-A-3-16
No. 1331), and a nylon fiber material or a polyester fiber / thermoplastic resin composite material has been proposed (JP-A-59-207966, JP-A-1-43532).
JP, JP-A-2-124856, JP-A-3-7
6614 and JP-A-3-130118).
【0003】また、従来の有機繊維強化熱硬化性樹脂材
料としては、強化繊維としてアラミド繊維材料、液晶繊
維材料、超高分子量ポリエチレン繊維材料、ビニロン繊
維材料及びPPS・PEEK繊維材料などが不飽和ポリ
エステル樹脂又はエポキシ樹脂を母材とした複合材料と
して製造されている。これらの複合材料は予め樹脂を含
浸させたプリプレグを金型内に積層させた後、加圧及び
加熱下にて樹脂を硬化させることによって製造されてい
る。[0003] Conventional organic fiber reinforced thermosetting resin materials include aramid fiber material, liquid crystal fiber material, ultra high molecular weight polyethylene fiber material, vinylon fiber material and PPS / PEEK fiber material as unsaturated fiber. It is manufactured as a composite material using a resin or an epoxy resin as a base material. These composite materials are manufactured by laminating a resin-impregnated prepreg in a mold and then curing the resin under pressure and heat.
【0004】一方、ニードルパンチによる強化繊維処理
法としては、例えばガラス長繊維とガラス長繊維マット
との組み合わせ(特開昭62−240514号公報)や
ガラス長繊維とポリアミドやポリプロピレン繊維等の有
機繊維マットとの組み合わせ(特開昭59−71847
号公報)などが提案されている。On the other hand, as a reinforcing fiber treatment method by needle punching, for example, a combination of a glass long fiber and a glass long fiber mat (Japanese Patent Application Laid-Open No. 62-240514) or a glass long fiber and an organic fiber such as polyamide or polypropylene fiber are used. Combination with a mat (Japanese Patent Laid-Open No. 59-71847)
Publication).
【0005】[0005]
【発明が解決しようとする課題】しかしながら、前述し
た従来の有機繊維強化樹脂材料では、通常、強化繊維と
して織物積層体又は不織布積層体を用いているが、織物
積層樹脂材料では曲げや圧縮の荷重を受けた場合に、積
層層間のせん断破壊により、繊維の張力を十分に発揮す
ることができず、曲げ/圧縮強度が著しく低下してしま
うという欠点があった。また、織物積層体では厚物成形
時に織物の積層数が多くなるため、積層作業が煩雑とな
り、また樹脂含浸時に織物の目によるフィルタリング効
果のため、樹脂含浸性が著しく阻害され、十分な機械的
特性が得られないという欠点があった。他方、不織布積
層体を単独で用いた場合には、樹脂の含浸性は良好であ
るが、近年、材料に要求される高い強度を満たすことは
極めて困難であるという欠点があった。However, in the above-mentioned conventional organic fiber reinforced resin material, a woven laminate or a nonwoven fabric laminate is usually used as a reinforcing fiber. When subjected to the above, there is a disadvantage that the fiber tension cannot be sufficiently exerted due to the shear fracture between the laminated layers, and the bending / compression strength is significantly reduced. In addition, in the case of a woven fabric laminate, the number of woven fabrics increases when forming a thick material, so that the laminating operation becomes complicated, and because of the filtering effect of the woven fabric at the time of resin impregnation, the resin impregnating property is significantly impaired, and sufficient mechanical There is a drawback that characteristics cannot be obtained. On the other hand, when the nonwoven fabric laminate is used alone, the impregnating property of the resin is good, but there is a drawback that it is extremely difficult to satisfy the high strength required for the material in recent years.
【0006】一方、ニードルパンチによる強化繊維の処
理についても、従来は、一方向に引き揃えられたガラス
繊維の製造上の取扱性の向上が目的であり、実際におい
てはガラス繊維は切断され、マットに担持される形態と
なっており、長繊維を用いるメリットが活かされていな
いという欠点があった。[0006] On the other hand, in the processing of reinforcing fibers by needle punching, conventionally, the purpose is to improve the handling of glass fibers aligned in one direction, and in practice, glass fibers are cut and matted. And has a drawback that the merit of using long fibers is not utilized.
【0007】従って本発明の目的は、有機繊維強化樹脂
材の曲げ/圧縮変形における層間せん断破壊を防止し、
曲げ/圧縮強度を向上させ、かつ樹脂の含浸性を改良す
ることにより、機械的特性に優れた有機繊維強化樹脂材
料を提供することにある。Accordingly, an object of the present invention is to prevent interlaminar shear failure in bending / compression deformation of an organic fiber reinforced resin material,
An object of the present invention is to provide an organic fiber reinforced resin material having excellent mechanical properties by improving bending / compression strength and improving resin impregnation.
【0008】[0008]
【課題を解決するための手段及び作用】本発明者らは、
同じ厚みの積層材料においては曲げ/圧縮変形時には層
間数が少ない方が破壊確率が小さくなり、破壊強度が大
きくなることに着目し、有機繊維織物に有機繊維不織布
をニードルパンチし、不織布を構成する繊維が織物繊維
束中に刺さり強固に一体化されたシートを積層して、更
に不織布同士が相互に絡まりシート積層層間が見掛け上
なくなることにより、有機繊維強化樹脂の曲げ/圧縮強
度を向上させることができると共に、有機繊維織物と有
機繊維不織布とを一体化させることにより、織物単独積
層体に比べ織物による樹脂モノマーの含浸阻害が緩和さ
れ、ボイド分率を著しく低減することができることを見
いだし、本発明に到達した。Means and Action for Solving the Problems The present inventors have
Attention is paid to the fact that the smaller the number of layers during bending / compression deformation, the smaller the number of layers in the same thickness of the laminated material, the smaller the probability of destruction and the greater the breaking strength. Improving the bending / compressive strength of organic fiber reinforced resin by stacking sheets in which fibers are stuck into a woven fiber bundle and tightly integrated, and furthermore, the nonwoven fabrics are entangled with each other and the interlayer between the sheet laminates is apparently eliminated. It was found that, by integrating the organic fiber woven fabric and the organic fiber non-woven fabric, the impregnation of the woven fabric with the resin monomer was reduced as compared to the woven fabric alone, and the void fraction could be significantly reduced. The invention has been reached.
【0009】本発明の上記の目的は、有機繊維織物の両
面又は片面に有機繊維不織布をニードルパンチして一体
化したシートを、型内に所定の枚数を積層した後樹脂モ
ノマーを含浸し、該樹脂を反応・固化させるか、又は予
め樹脂モノマーを含浸させたプリプレグシート状態で積
層し、前記樹脂を反応・固化させたことを特徴とする有
機繊維強化樹脂材料により達成された。The object of the present invention is to provide a method in which a predetermined number of sheets obtained by needle-punching and unifying an organic fiber nonwoven fabric on both sides or one side of an organic fiber fabric are laminated in a mold and then impregnated with a resin monomer. This is achieved by an organic fiber reinforced resin material in which a resin is reacted and solidified or laminated in a prepreg sheet state in which a resin monomer has been impregnated in advance, and the resin is reacted and solidified.
【0010】上記有機繊維織物の両面又は片面に有機繊
維不織布をニードルパンチして一体化したシートのボイ
ド分率を5容量%以下とすることが好ましい。シートの
ボイド分率が5容量%を超えるとボイドを起点とした破
壊により強度が著しく低下する。[0010] It is preferable that the void fraction of the sheet obtained by needle-punching an organic fiber nonwoven fabric on both sides or one side of the organic fiber woven fabric is 5% by volume or less. When the void fraction of the sheet exceeds 5% by volume, the strength is remarkably reduced due to fracture starting from the void.
【0011】有機繊維不織布の目付重量は20〜250
g/m2 の範囲であることが好ましい。有機繊維不織布
の目付重量が20g/m2 未満となると不織布間の繊維
のからまりが弱く、このため層間せん断が起こりやすく
強度が小さくなり、逆に250g/m2 を超えると不織
布の繊維間空隙が密となり樹脂の含浸が著しく阻害さ
れ、複合材の強度は低下する。また、有機繊維織物と有
機繊維不織布とを一体化したシートが10〜60重量%
の範囲で含有されることが好ましい。シートの含有量が
10重量%未満になるとシートが波打ちしやすく補強繊
維としての働きが十分にできなくなり、逆に60重量%
を超えると積層時に不織布が押しつぶされ、繊維間空隙
が密になり樹脂含浸が著しく阻害される結果となる。The basis weight of the organic fiber nonwoven fabric is 20 to 250.
It is preferably in the range of g / m 2 . When a weight per unit area of the organic fiber nonwoven fabric is less than 20 g / m 2 weak entanglement of fibers between the nonwoven fabric and therefore likely to occur interlaminar shear strength decreases, exceeding 250 g / m 2 in the opposite nonwoven fiber voids of And the impregnation of the resin is significantly inhibited, and the strength of the composite material is reduced. Further, the sheet in which the organic fiber woven fabric and the organic fiber non-woven fabric are integrated is 10 to 60% by weight.
Is preferably contained in the range of If the content of the sheet is less than 10% by weight, the sheet is likely to undulate and not sufficiently function as a reinforcing fiber, and conversely 60% by weight.
If it exceeds 300, the nonwoven fabric will be crushed at the time of lamination, the voids between the fibers will be dense, and the resin impregnation will be significantly inhibited.
【0012】[0012]
【作用】本発明は、図1及び図2に示すように、その強
化繊維の構成を有機繊維織物の両面又は片面に有機繊維
不織布を重ねた後、ニードルパンチにより、有機繊維不
織布を構成する繊維が有機繊維織物繊維束中に刺さるよ
うに強固に一体化されたシートとしたことにより、曲げ
や圧縮変形時に有機繊維織物−有機繊維不織布間の層間
剥離を防止し、かつ有機繊維不織布が相互に絡み合って
シート間が一体化されることにより破壊強度を向上さ
せ、更に有機繊維不織布を用いたことにより、織物単独
積層体に比べ、ボイド分率を著しく低減させた有機繊維
強化樹脂を提供することができる。According to the present invention, as shown in FIGS. 1 and 2, the reinforcing fibers are formed by laminating an organic fiber nonwoven fabric on both sides or one surface of an organic fiber woven fabric, and then needle-punching the fibers to form the organic fiber nonwoven fabric. Is strongly integrated so as to pierce the organic fiber woven fiber bundle, thereby preventing delamination between the organic fiber woven fabric and the organic fiber non-woven fabric during bending or compressive deformation, and allowing the organic fiber non-woven fabric to mutually Provided is an organic fiber reinforced resin in which the sheets are united by being entangled to improve the breaking strength, and further, by using an organic fiber nonwoven fabric, the void fraction is significantly reduced as compared with a woven fabric alone laminate. Can be.
【0013】[0013]
【実施例】以下、本発明を実施例によって更に詳述する
が、本発明はこれによって限定されるものではない。
尚、実施例及び比較例で得られた材料については、以下
の測定を行った。EXAMPLES The present invention will be described in more detail with reference to the following Examples, but it should not be construed that the invention is limited thereto.
In addition, about the material obtained by the Example and the comparative example, the following measurements were performed.
【0014】曲げ試験 JIS K 7055に準拠した。繊維方向に平行に試
験片を切り出し、所定の条件下で測定した。Bending test It was based on JIS K 7055. A test piece was cut out in parallel with the fiber direction and measured under predetermined conditions.
【0015】圧縮試験 JIS K 7056 B法に準拠した。繊維方向に平
行に試験片を切り出し、所定の条件下で測定した。[0015] Compression test: In accordance with JIS K 7056 B method. A test piece was cut out in parallel with the fiber direction and measured under predetermined conditions.
【0016】層間せん断試験 JIS K 7057に準拠した。繊維方向に平行に試
験片を切り出し、所定の条件下で測定した。Interlaminar shear test This was based on JIS K 7057. A test piece was cut out in parallel with the fiber direction and measured under predetermined conditions.
【0017】アイゾッド衝撃試験 JIS K 6911に準拠した。繊維方向に平行に試
験片を切り出し、所定の条件下でフラットワイズ打撃試
験を行った。Izod impact test It was based on JIS K 6911. A test piece was cut out in parallel with the fiber direction, and a flat wise impact test was performed under a predetermined condition.
【0018】強化材の比重測定 常温で有機繊維強化樹脂片の空気中及びメタノール中に
おける重量から浮力法により算出した。Measurement of Specific Gravity of Reinforcement The weight of organic fiber reinforced resin pieces in air and methanol was calculated by the buoyancy method at room temperature.
【0019】ボイド分率 ボイド分率(容量%)=100×〔(理論密度)−(実
測密度)〕に従って算出した。Void fraction Calculated according to void fraction (volume%) = 100 × [(theoretical density) − (measured density)].
【0020】実施例1〜3 市販の高強力ビニロン繊維平織物(目付重量180g/
m2 )の両面に、市販の汎用ビニロン繊維不織布(目付
重量100g/m2 )をニードルパンチにより一体化し
たシートを市販アセトン中に30分浸漬し、アセトンを
十分に除去した後、60℃で24時間乾燥した。得られ
たシートを所定の枚数積層して型内に設置し、開環塊状
重合性の熱硬化性樹脂であるジシクロペンタジエン(D
CP)を注入し、硬化反応させて板状の試料を得た。板
厚は強化繊維の積層枚数にかかわらず5mmとなるよう
にした。Examples 1 to 3 Commercially available high-strength vinylon fiber plain fabric (basis weight 180 g /
m 2 ), a sheet obtained by integrating a commercially available general-purpose vinylon fiber nonwoven fabric (having a basis weight of 100 g / m 2 ) by needle punching on both sides of the commercial acetone was immersed in commercial acetone for 30 minutes, and the acetone was sufficiently removed. Dry for 24 hours. A predetermined number of the obtained sheets are stacked and placed in a mold, and a ring-opening bulk polymerizable thermosetting resin, dicyclopentadiene (D
CP) was injected, and a curing reaction was performed to obtain a plate-shaped sample. The plate thickness was set to 5 mm regardless of the number of reinforcing fibers laminated.
【0021】実施例4 市販の高強力ビニロン繊維平織物(目付重量360g/
m2 )の両面に、市販の汎用ビニロン繊維不織布(目付
重量100g/m2 )をニードルパンチにより一体化し
たシートを市販アセトン中に30分浸漬し、アセトンを
十分に除去した後、60℃で24時間乾燥した。得られ
たシートを所定の枚数積層して型内に設置し、開環塊状
重合性の熱硬化性樹脂であるジシクロペンタジエン(D
CP)を注入し、硬化反応させて板状の試料を得た。板
厚は5mmとなるようにした。Example 4 Commercially available high-strength vinylon fiber plain fabric (weight per unit area: 360 g /
m 2 ), a sheet obtained by integrating a commercially available general-purpose vinylon fiber nonwoven fabric (having a basis weight of 100 g / m 2 ) by needle punching on both sides of the commercial acetone was immersed in commercial acetone for 30 minutes, and the acetone was sufficiently removed. Dry for 24 hours. A predetermined number of the obtained sheets are stacked and placed in a mold, and a ring-opening bulk polymerizable thermosetting resin, dicyclopentadiene (D
CP) was injected, and a curing reaction was performed to obtain a plate-shaped sample. The plate thickness was set to 5 mm.
【0022】実施例5 市販の高強力ビニロン繊維平織物(目付重量180g/
m2 )の両面に、市販の汎用ビニロン繊維不織布(目付
重量200g/m2 )をニードルパンチにより一体化し
たシートを市販アセトン中に30分浸漬し、アセトンを
十分に除去した後、60℃で24時間乾燥した。得られ
たシートを所定の枚数積層して型内に設置し、開環塊状
重合性の熱硬化性樹脂であるジシクロペンタジエン(D
CP)を注入し、硬化反応させて板状の試料を得た。板
厚は5mmとなるようにした。Example 5 Commercially available high-strength vinylon fiber plain fabric (basis weight 180 g /
m 2 ), a sheet obtained by integrating a commercially available general-purpose vinylon fiber nonwoven fabric (having a basis weight of 200 g / m 2 ) with a needle punch on both sides of the commercial acetone was immersed in commercially available acetone for 30 minutes, and the acetone was sufficiently removed. Dry for 24 hours. A predetermined number of the obtained sheets are stacked and placed in a mold, and a ring-opening bulk polymerizable thermosetting resin, dicyclopentadiene (D
CP) was injected, and a curing reaction was performed to obtain a plate-shaped sample. The plate thickness was set to 5 mm.
【0023】実施例6 市販の高強力ビニロン繊維平織物(目付重量180g/
m2 )の両面に、市販のポリエステル繊維不織布(目付
重量100g/m2 )をニードルパンチにより一体化し
たシートを市販アセトン中に30分浸漬し、アセトンを
十分に除去した後、60℃で24時間乾燥した。得られ
たシートを所定の枚数積層して型内に設置し、開環塊状
重合性の熱硬化性樹脂であるジシクロペンタジエン(D
CP)を注入し、硬化反応させて板状の試料を得た。板
厚は5mmとなるようにした。Example 6 Commercially available high-strength vinylon fiber plain fabric (basis weight 180 g /
m 2 ), a sheet obtained by integrating a commercially available polyester fiber non-woven fabric (having a basis weight of 100 g / m 2 ) by needle punching on both sides was immersed in commercially available acetone for 30 minutes, and the acetone was sufficiently removed. Dried for hours. A predetermined number of the obtained sheets are stacked and placed in a mold, and a ring-opening bulk polymerizable thermosetting resin, dicyclopentadiene (D
CP) was injected, and a curing reaction was performed to obtain a plate-shaped sample. The plate thickness was set to 5 mm.
【0024】実施例7 市販の高強力ビニロン繊維平織物(目付重量180g/
m2 )の両面に、市販の汎用ビニロン繊維不織布(目付
重量100g/m2 )をニードルパンチにより一体化し
たシート及び市販の高強力ビニロン繊維平織物(目付重
量180g/m 2 )の片面に、市販の汎用ビニロン繊維
不織布(目付重量100g/m2 )をニードルパンチに
より一体化したシートを市販のアセトン中に30分浸漬
し、アセトンを十分に除去した後、60℃で24時間乾
燥した。最表面に片面不織布シートの織物面を配し、内
部には両面不織布シートを配して積層し型内に設置し、
開環塊状重合性の熱硬化性樹脂であるジシクロペンタジ
エン(DCP)を注入し、硬化反応させて板状の試料を
得た。板厚は5mmとなるようにした。Example 7 Commercially available high-strength vinylon fiber plain fabric (basis weight: 180 g /
mTwo), A commercially available non-woven vinylon fiber nonwoven fabric
Weight 100g / mTwo) By needle punch
Sheet and commercially available high-strength vinylon fiber plain fabric (basis weight
180g / m Two) On one side, commercially available general purpose vinylon fiber
Non-woven fabric (basis weight 100g / mTwo) To needle punch
Immerse the more integrated sheet in commercially available acetone for 30 minutes
After thoroughly removing acetone, dry at 60 ° C for 24 hours.
Dried. Arrange the woven surface of the single-sided nonwoven sheet on the outermost surface, and
Place a double-sided nonwoven sheet in the part, stack it and install it in the mold,
Dicyclopentadi, a ring-opening bulk polymerizable thermosetting resin.
Ene (DCP) is injected and cured to obtain a plate-like sample.
Obtained. The plate thickness was set to 5 mm.
【0025】実施例8 市販の高強力ビニロン繊維平織物(目付重量180g/
m2 )の両面に、市販の汎用ビニロン繊維不織布(目付
重量100g/m2 )をニードルパンチにより一体化し
たシートを市販のアセトン中に30分浸漬し、アセトン
を十分に除去した後、60℃で24時間乾燥した。得ら
れたシートに市販のビスフェノールA型エポキシ樹脂を
含浸させたプリプレグシートを所定の枚数積層して型内
に設置し、硬化反応させて板状の試料を得た。板厚は5
mmとなるようにした。Example 8 Commercially available high-strength vinylon fiber plain fabric (basis weight 180 g /
m 2 ), a sheet obtained by integrating a commercially available general-purpose vinylon fiber non-woven fabric (having a basis weight of 100 g / m 2 ) with a needle punch on both sides was immersed in commercially available acetone for 30 minutes, and the acetone was sufficiently removed. For 24 hours. A predetermined number of prepreg sheets impregnated with a commercially available bisphenol A type epoxy resin were laminated on the obtained sheet, placed in a mold, and cured to obtain a plate-shaped sample. Board thickness is 5
mm.
【0026】実施例9 市販の高強力ビニロン繊維平織物(目付重量180g/
m2 )の両面に、市販の汎用ビニロン繊維不織布(目付
重量100g/m2 )をニードルパンチにより一体化し
たシートを市販のアセトン中に30分浸漬し、アセトン
を十分に除去した後、60℃で24時間乾燥した。得ら
れたシートに市販の不飽和ポリエステル樹脂を含浸させ
たプリプレグシートを所定の枚数積層して型内に設置
し、硬化反応させて板状の試料を得た。板厚は5mmと
なるようにした。Example 9 Commercially available high-strength vinylon fiber plain fabric (basis weight: 180 g /
m 2 ), a sheet obtained by integrating a commercially available general-purpose vinylon fiber non-woven fabric (having a basis weight of 100 g / m 2 ) with a needle punch on both sides was immersed in commercially available acetone for 30 minutes, and the acetone was sufficiently removed. For 24 hours. A predetermined number of prepreg sheets impregnated with a commercially available unsaturated polyester resin were laminated on the obtained sheet, placed in a mold, and allowed to undergo a curing reaction to obtain a plate-shaped sample. The plate thickness was set to 5 mm.
【0027】比較例1 市販の高強力ビニロン繊維平織物(目付重量180g/
m2 )を市販のアセトン中に30分浸漬し、アセトンを
十分に除去した後、60℃で24時間乾燥した。得られ
たシートを11枚積層し型内に設置し、開環塊状重合性
の熱硬化性樹脂であるジシクロペンタジエン(DCP)
を注入し、硬化反応させて板状の試料を得た。板厚は5
mmとなるようにした。Comparative Example 1 Commercially available high-strength vinylon fiber plain fabric (basis weight 180 g /
m 2 ) was immersed in commercially available acetone for 30 minutes to sufficiently remove the acetone, and then dried at 60 ° C. for 24 hours. The obtained 11 sheets are stacked and placed in a mold, and a ring-opening bulk polymerizable thermosetting resin, dicyclopentadiene (DCP)
And a curing reaction was performed to obtain a plate-like sample. Board thickness is 5
mm.
【0028】比較例2 市販の高強力ビニロン繊維平織物(目付重量180g/
m2 )の両面に、市販の汎用ビニロン繊維不織布(目付
重量100g/m2 )をニードルパンチにより一体化し
たシートを市販のアセトン中に30分浸漬し、アセトン
を十分に除去した後、60℃で24時間乾燥した。得ら
れたシートを2枚とその中央に、ニードルパンチによる
繊維の拘束を実施しない高強力ビニロン繊維平織物(目
付重量180g/m2 )を配して積層して型内に設置
し、開環塊状重合性の熱硬化性樹脂であるジシクロペン
タジエン(DCP)を注入し、硬化反応させて板状の試
料を得た。板厚は5mmとなるようにした。Comparative Example 2 Commercially available high-strength vinylon fiber plain fabric (basis weight 180 g /
m 2 ), a sheet obtained by integrating a commercially available general-purpose vinylon fiber non-woven fabric (having a basis weight of 100 g / m 2 ) with a needle punch on both sides was immersed in commercially available acetone for 30 minutes, and the acetone was sufficiently removed. For 24 hours. Two sheets obtained and a high-strength vinylon fiber plain fabric (basis weight 180 g / m 2 ) in which the fiber is not constrained by a needle punch are arranged and stacked in the center of the sheet, placed in a mold, and opened in a mold. Dicyclopentadiene (DCP), which is a block polymerizable thermosetting resin, was injected and cured to obtain a plate-shaped sample. The plate thickness was set to 5 mm.
【0029】比較例3、4 市販の高強力ビニロン繊維平織物(目付重量180g/
m2 )の両面に、市販の汎用ビニロン繊維不織布(目付
重量100g/m2 )をニードルパンチにより一体化し
たシートを市販のアセトン中に30分間浸漬し、アセト
ンを十分に除去した後、60℃で24時間乾燥した。得
られたシートを所定の枚数積層して型内に設置し、開環
塊状重合性の熱硬化性樹脂であるジシクロペンタジエン
(DCP)を注入し、硬化反応させた。板厚は強化繊維
の積層枚数にかかわらず5mmとなるようにした。尚、
比較例4については樹脂の含浸性が極端に悪く、機械的
特性を測定することのできる試料が得られなかった。Comparative Examples 3 and 4 Commercially available high-strength vinylon fiber plain fabric (basis weight 180 g /
m 2 ), a sheet obtained by integrating a commercially available general-purpose vinylon fiber nonwoven fabric (having a basis weight of 100 g / m 2 ) with a needle punch on both surfaces of the resultant was immersed in commercially available acetone for 30 minutes, and the acetone was sufficiently removed. For 24 hours. A predetermined number of the obtained sheets were laminated and placed in a mold, and dicyclopentadiene (DCP), which is a thermosetting resin having a ring-opening mass, was injected thereinto to cause a curing reaction. The plate thickness was set to 5 mm regardless of the number of reinforcing fibers laminated. still,
In Comparative Example 4, the impregnating property of the resin was extremely poor, and a sample whose mechanical properties could be measured could not be obtained.
【0030】比較例5 市販の高強力ビニロン繊維平織物(目付重量180g/
m2 )の両面に、市販の汎用ビニロン繊維不織布(目付
重量300g/m2 )をニードルパンチにより一体化し
たシートを市販のアセトン中に30分間浸漬し、アセト
ンを十分に除去した後、60℃で24時間乾燥した。得
られたシートを所定の枚数積層して型内に設置し、開環
塊状重合性の熱硬化性樹脂であるジシクロペンタジエン
(DCP)を注入し、硬化反応させた。尚、本比較例5
については樹脂の含浸性が極端に悪く、機械的特性を測
定することのできる試料が得られなかった。Comparative Example 5 Commercially available high-strength vinylon fiber plain fabric (basis weight 180 g /
m 2 ), a sheet obtained by integrating a commercially available general-purpose vinylon fiber non-woven fabric (having a basis weight of 300 g / m 2 ) by needle punch on both surfaces of the resultant was immersed in commercially available acetone for 30 minutes, and the acetone was sufficiently removed. For 24 hours. A predetermined number of the obtained sheets were stacked and placed in a mold, and dicyclopentadiene (DCP), which is a thermosetting resin having a ring-opening mass, was injected to cause a curing reaction. Note that Comparative Example 5
With regard to, the impregnating property of the resin was extremely poor, and a sample from which the mechanical properties could be measured could not be obtained.
【0031】比較例6 市販の高強力ビニロン繊維平織物(目付重量180g/
m2 )の両面に、市販の汎用ビニロン繊維不織布(目付
重量10g/m2 )をニードルパンチにより一体化した
シートを市販のアセトン中に30分間浸漬し、アセトン
を十分に除去した後、60℃で24時間乾燥した。得ら
れたシートを所定の枚数積層して型内に設置し、開環塊
状重合性の熱硬化性樹脂であるジシクロペンタジエン
(DCP)を注入し、硬化反応させて板状の試料を得
た。板厚は5mmとなるようにした。Comparative Example 6 Commercially available high-strength vinylon fiber plain fabric (basis weight 180 g /
m 2 ), a sheet obtained by integrating a commercially available general-purpose vinylon fiber nonwoven fabric (having a basis weight of 10 g / m 2 ) by needle punch on both surfaces of the resultant was immersed in commercially available acetone for 30 minutes, and the acetone was sufficiently removed. For 24 hours. A predetermined number of the obtained sheets are stacked and placed in a mold. Dicyclopentadiene (DCP), which is a ring-opening block polymerizable thermosetting resin, is injected and cured to obtain a plate-shaped sample. . The plate thickness was set to 5 mm.
【0032】実施例1〜9及び比較例1〜6についての
試験結果を表1に示す。Table 1 shows the test results for Examples 1 to 9 and Comparative Examples 1 to 6.
【0033】[0033]
【表1】 [Table 1]
【0034】尚、本実施例では母材樹脂としてジシクロ
ペンタジエン、エポキシ樹脂、不飽和ポリエステル樹
脂、強化繊維としてビニロン繊維、ポリエステル繊維を
例に挙げて説明したが、用いられる母材樹脂及び強化繊
維としては特に制約はなく、母材樹脂としては開環重合
性ポリカーボネート、ε−カプロラクタム(ポリアミ
ド)、多官能性イソシアネート/多官能性ポリオール混
合物(ウレタン樹脂)等が挙げられ、有機繊維としては
高強度ポリエチレン繊維、アラミド繊維、液晶繊維等が
挙げられる。また、有機繊維織物の織り方についても、
実施例中に説明した平織りに限られず、朱子織り、斜子
織り、サテン織り、多重織り等を適用することができ
る。In this embodiment, dicyclopentadiene, epoxy resin, unsaturated polyester resin and vinylon fiber and polyester fiber have been described as examples of the matrix resin. There are no particular restrictions, and examples of the base resin include ring-opening polymerizable polycarbonate, ε-caprolactam (polyamide), a polyfunctional isocyanate / polyfunctional polyol mixture (urethane resin), and the like. Examples include polyethylene fibers, aramid fibers, and liquid crystal fibers. In addition, about how to weave organic fiber fabric,
The present invention is not limited to the plain weave described in the embodiment, but may be a satin weave, a slant weave, a satin weave, a multiple weave, or the like.
【0035】[0035]
【発明の効果】以上説明したように、本発明は、その強
化繊維の構成を有機繊維織物の両面又は片面に有機繊維
不織布をニードルパンチして一体化したシートとしたこ
とにより、織物と不織布との間を拘束し、かつシート積
層時の層間をも一体化して有機繊維強化樹脂の曲げ/圧
縮強度を向上させ、更に有機繊維不織布を用いたことに
より、織物単独積層体に比べ、ボイド分率が著しく低減
した有機繊維強化樹脂を得ることができる。また、本発
明の有機繊維強化樹脂材料は衝撃強度も向上させるた
め、エネルギー吸収部材としても有用である。更に、本
発明の有機繊維強化樹脂材料は、図3に示すように、圧
縮成形等により不織布部が圧縮され、任意の形状に追従
するため付形性が良好であり、スキー板、セールボー
ド、カヌー等のスポーツ用品、モーターボート船体等の
海洋輸送機器部品、航空機機体や鉄道等の輸送機器、サ
イドメンバー、バンパービーム、フェンダー等の自動車
用部品、防音パネル等の建築部品など広範な用途に使用
することができる。As described above, according to the present invention, the reinforcing fiber is constituted by a sheet obtained by needle-punching an organic fiber non-woven fabric on both sides or one side of an organic fiber woven fabric, so that the woven fabric and the non-woven fabric can be combined. Between the woven fabric and the laminate of the woven fabric, by using the organic fiber non-woven fabric to improve the bending / compression strength of the organic fiber reinforced resin. Can be obtained. Moreover, the organic fiber reinforced resin material of the present invention is also useful as an energy absorbing member because it also improves impact strength. Further, as shown in FIG. 3, the organic fiber reinforced resin material of the present invention has a good non-woven fabric portion because the nonwoven fabric portion is compressed by compression molding or the like and follows an arbitrary shape. Used for a wide range of applications such as sports equipment such as canoe, marine transportation equipment parts such as motor boat hulls, transportation equipment such as aircraft fuselage and railways, automobile parts such as side members, bumper beams, fenders, and construction parts such as soundproof panels. be able to.
【図1】本発明の有機繊維強化樹脂材料の両面不織布シ
ートの断面を示す模式図である。FIG. 1 is a schematic view showing a cross section of a double-sided nonwoven fabric sheet of the organic fiber reinforced resin material of the present invention.
【図2】本発明の有機繊維強化樹脂材料の片面不織布シ
ートの断面を示す模式図である。FIG. 2 is a schematic view showing a cross section of a single-sided nonwoven fabric sheet of the organic fiber reinforced resin material of the present invention.
【図3】本発明の有機繊維強化樹脂材料の圧縮成形時に
おける断面を示す模式図である。FIG. 3 is a schematic view showing a cross section during compression molding of the organic fiber reinforced resin material of the present invention.
1 有機繊維織物 2 有機繊維不織布 1 Organic fiber woven fabric 2 Organic fiber non-woven fabric
Claims (2)
不織布をニードルパンチして一体化したシートを、型内
に所定の枚数を積層した後樹脂モノマーを含浸し、該樹
脂を反応・固化させるか、又は予め樹脂モノマーを含浸
させたプリプレグシート状態で積層し、前記樹脂を反応
・固化させたことを特徴とする有機繊維強化樹脂材料。1. A predetermined number of sheets obtained by needle-punching an organic fiber nonwoven fabric on both sides or one side of an organic fiber woven fabric are laminated in a mold, and then impregnated with a resin monomer to react and solidify the resin. Or an organic fiber reinforced resin material obtained by laminating in a prepreg sheet state previously impregnated with a resin monomer and allowing the resin to react and solidify.
0g/m2 の範囲にあり、有機繊維織物と前記有機繊維
不織布とを一体化したシートが10〜60重量%の範囲
で含有されることを特徴とする請求項1記載の有機繊維
強化樹脂材料。2. The organic fiber nonwoven fabric has a basis weight of 20 to 25.
2. The organic fiber reinforced resin material according to claim 1, wherein a sheet in which the organic fiber woven fabric and the organic fiber nonwoven fabric are integrated is contained in an amount of 10 to 60% by weight in a range of 0 g / m 2. .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20988494A JP3326984B2 (en) | 1994-09-02 | 1994-09-02 | Organic fiber reinforced resin material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20988494A JP3326984B2 (en) | 1994-09-02 | 1994-09-02 | Organic fiber reinforced resin material |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0873629A JPH0873629A (en) | 1996-03-19 |
JP3326984B2 true JP3326984B2 (en) | 2002-09-24 |
Family
ID=16580248
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JP4491968B2 (en) * | 1999-03-23 | 2010-06-30 | 東レ株式会社 | Composite carbon fiber substrate, preform, and method for producing carbon fiber reinforced plastic |
US8246882B2 (en) | 2003-05-02 | 2012-08-21 | The Boeing Company | Methods and preforms for forming composite members with interlayers formed of nonwoven, continuous materials |
WO2006089534A1 (en) | 2005-02-21 | 2006-08-31 | Airbus Deutschland Gmbh | Fiber composite component and method for the production of a fiber composite component |
US20140261970A1 (en) * | 2013-03-15 | 2014-09-18 | General Electric Company | Method of making a laminate component and method of removing voids from a pre-preg ply and a pre-preg component |
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