JPH0443932B2 - - Google Patents
Info
- Publication number
- JPH0443932B2 JPH0443932B2 JP63325218A JP32521888A JPH0443932B2 JP H0443932 B2 JPH0443932 B2 JP H0443932B2 JP 63325218 A JP63325218 A JP 63325218A JP 32521888 A JP32521888 A JP 32521888A JP H0443932 B2 JPH0443932 B2 JP H0443932B2
- Authority
- JP
- Japan
- Prior art keywords
- composite material
- fiber
- fibers
- resins
- cured
- 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 - Lifetime
Links
- 239000002131 composite material Substances 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 20
- 229920005989 resin Polymers 0.000 claims description 13
- 239000011347 resin Substances 0.000 claims description 13
- 239000003733 fiber-reinforced composite Substances 0.000 claims description 12
- 239000003190 viscoelastic substance Substances 0.000 claims description 11
- 239000003822 epoxy resin Substances 0.000 claims description 9
- 229920000647 polyepoxide Polymers 0.000 claims description 9
- 239000012783 reinforcing fiber Substances 0.000 claims description 8
- 239000004917 carbon fiber Substances 0.000 claims description 7
- 239000004760 aramid Substances 0.000 claims description 5
- 229920006231 aramid fiber Polymers 0.000 claims description 5
- 239000003365 glass fiber Substances 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000003475 lamination Methods 0.000 claims 1
- 238000013016 damping Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229920000049 Carbon (fiber) Polymers 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 229920005862 polyol Polymers 0.000 description 3
- 150000003077 polyols Chemical class 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920001228 polyisocyanate Polymers 0.000 description 2
- 239000005056 polyisocyanate Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 229930185605 Bisphenol Natural products 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000011074 autoclave method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は人工衛星等の宇宙構造物、OA機器、
自動車、レジヤー用品などの構造体に用いて振
動・騒音の低減を実現する繊維強化複合材料プリ
プレグシートに関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to space structures such as artificial satellites, OA equipment,
The present invention relates to fiber-reinforced composite prepreg sheets that are used in structures such as automobiles and leisure goods to reduce vibration and noise.
CFRPなどの繊維強化複合材料は、カーボンや
ガラス繊維などの無機繊維又はアラミド繊維など
の有機繊維をエポキシ樹脂、ポリイミド樹脂、ポ
リエーテルエーテルケトン樹脂などの樹脂で固型
化したものである。
Fiber-reinforced composite materials such as CFRP are made by solidifying inorganic fibers such as carbon and glass fibers or organic fibers such as aramid fibers with resins such as epoxy resins, polyimide resins, and polyether ether ketone resins.
繊維強化複合材料は、従来の金属構造材料に比
較して軽量、高強度であること、及び繊維配向角
を制御すれば所望の機械特性を実現できる点で優
れている。このため、軽量化が特に要求される宇
宙構造物、航空機、自動車、レジヤー用品などの
構造材料に巾広く用いられるようになつてきてい
る。 Fiber-reinforced composite materials are superior to conventional metal structural materials in that they are lightweight and have high strength, and desired mechanical properties can be achieved by controlling the fiber orientation angle. For this reason, it has come to be widely used as a structural material for space structures, aircraft, automobiles, leisure goods, etc., which particularly require weight reduction.
〔発明が解決しようとする課題〕
ところで、この種複合材料で作製した構造体の
用途の拡大に伴い、構造体の振動が問題となつて
いる。[Problems to be Solved by the Invention] Incidentally, with the expansion of the uses of structures made of this type of composite material, vibration of the structures has become a problem.
繊維強化複合材料は、軽量であり、従来の金属
構造材料と同程度の小さな振動減衰特性（損失係
数η＝0.001〜0.1）をもつため、振動を生じ易
い。また、構造物を一体成型で作製することが多
く、従来の金属構造材料とは異なり、接続部での
摩擦による振動減衰（構造減衰）を期待できな
い。このため、人工衛星などの宇宙構造物では、
構造体の振動による搭載機器の故障、アンテナの
位置精度の低下などの問題が生じ、繊維強化複合
材料の振動減衰特性の改善は、重要な課題となつ
ている。 Fiber-reinforced composite materials are lightweight and have low vibration damping characteristics (loss coefficient η = 0.001 to 0.1) comparable to those of conventional metal structural materials, so they are susceptible to vibration. In addition, structures are often manufactured by integral molding, and unlike conventional metal structural materials, vibration damping (structural damping) due to friction at connections cannot be expected. For this reason, in space structures such as artificial satellites,
Improving the vibration damping properties of fiber-reinforced composite materials has become an important issue, as vibrations in the structure cause problems such as failure of mounted equipment and a decrease in antenna positioning accuracy.
これらの問題を解決する目的で、マトリツクス
樹脂の振動減衰を増加させて複合材料の振動減衰
を増加させる手法が検討されている。これは、マ
トリツクス樹脂にポリエチレングリコール、ポリ
プロピレングリコール、液状ゴムなどの可撓性付
与剤を添加し、振動減衰特性を増加させた樹脂を
用いて複合材料を作製する手法である。しかし可
撓性付与剤の添加により樹脂の振動減衰特性を数
十倍程度に改善できるものの、複合材料の振動減
衰特性は数倍程度の増加しか得られず、また大き
な剛性の低下を伴うので効果的ではない。 In order to solve these problems, methods of increasing the vibration damping of the composite material by increasing the vibration damping of the matrix resin are being considered. This is a method of producing a composite material using a resin that has increased vibration damping properties by adding a flexibility imparting agent such as polyethylene glycol, polypropylene glycol, or liquid rubber to a matrix resin. However, although the vibration damping properties of the resin can be improved several tens of times by adding a flexibility agent, the vibration damping properties of the composite material can only be increased by several times, and this is accompanied by a large decrease in rigidity, so it is not effective. Not the point.
本発明は前記問題点を解決するものであり、そ
の目的とするところは大きな振動減衰特性を有す
る繊維強化複合材料プリプレグシートを提供する
ことにある。 The present invention is intended to solve the above-mentioned problems, and its purpose is to provide a fiber-reinforced composite material prepreg sheet having high vibration damping properties.
上記目的を達成するため、本発明の繊維強化複
合材料プリプレグシートにおいては、カーボン、
ガラス繊維などの無機強化繊維又はアラミド繊維
などの有機強化繊維をエポキシ樹脂などの樹脂に
含浸して半硬化処理した複合材料層と、半硬化状
又は未硬化状の粘弾性材料層とを積層一体化した
ものである。
In order to achieve the above object, the fiber-reinforced composite material prepreg sheet of the present invention includes carbon,
A composite material layer made by semi-curing inorganic reinforcing fibers such as glass fibers or organic reinforcing fibers such as aramid fibers impregnated with resin such as epoxy resin, and a semi-cured or uncured viscoelastic material layer are laminated together. It has become.
本発明の複合材料プリプレグシートにおいて
は、半硬化状又は未硬化状の粘弾性材料層を設け
ている。このため、本発明の複合材料プリプレグ
シートを用いて、オートフレーブ法や加熱プレス
法などの成形法で複合材料を試作した場合、カー
ボンやガラス繊維などの無機強化繊維又はアラミ
ド繊維などの有機強化繊維をエポキシ樹脂などの
樹脂に含浸した複合材料層と粘弾性材料層とが積
層一体化された繊維強化複合材料を実現できる。
前記複合材料は、層間の粘弾性材料の効果によ
り、大きな振動減衰特性を有する（特願昭63−
029480号（特開平１−204735号）、特願昭63−
29443号（特開平１−204733号））。
In the composite material prepreg sheet of the present invention, a semi-cured or uncured viscoelastic material layer is provided. Therefore, when a composite material is prototyped by a molding method such as an autoflave method or a hot press method using the composite prepreg sheet of the present invention, inorganic reinforcing fibers such as carbon or glass fibers or organic reinforcing fibers such as aramid fibers are used. A fiber-reinforced composite material can be realized in which a composite material layer impregnated with a resin such as epoxy resin and a viscoelastic material layer are laminated and integrated.
The composite material has a large vibration damping property due to the effect of the viscoelastic material between the layers (Japanese Patent Application No. 1983-
No. 029480 (Unexamined Japanese Patent Publication No. 1-204735), Patent Application No. 1983-
No. 29443 (Unexamined Japanese Patent Publication No. 1-204733).
粘弾性材料は、ビスフエノール型エポキシ樹脂、
ポリオールまたはその重合体のポリグリシジルエ
ーテルであるエポキシ樹脂、ポリイソシアネート
化合物とポリオール樹脂とを反応させて得られる
ポリウレタン系樹脂などの熱硬化性樹脂をベース
にしたもの、又は、ポリオレフイン樹脂、塩化ビ
ニル樹脂、アクリル樹脂などの熱可塑性樹脂をベ
ースにしたもの等公知のものが使用できる。ま
た、熱接着性を有する粘弾性材料硬化物も使用で
きる。これら材料としては、弾性率50Kgｆ／mm2以
下、好ましくは10Kgｆ／mm2以下のもの、力学的損
失tanδは0.1以上のもの、好ましくは0.5以上のも
のが使用できる。The viscoelastic material is bisphenol type epoxy resin,
Epoxy resins that are polyglycidyl ethers of polyols or their polymers, thermosetting resins such as polyurethane resins obtained by reacting polyisocyanate compounds and polyol resins, polyolefin resins, vinyl chloride resins Known materials such as those based on thermoplastic resins such as acrylic resins can be used. Further, a cured product of a viscoelastic material having thermal adhesive properties can also be used. As these materials, those having an elastic modulus of 50 Kgf/mm 2 or less, preferably 10 Kgf/mm 2 or less, and a mechanical loss tan δ of 0.1 or more, preferably 0.5 or more can be used.
以下に本発明の実施例を図によつて説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図に本発明繊維強化複合材料プリプレグシ
ートの断面図を示す。図において、カーボン繊維
１は一方向に配向して半硬化処理したエポキシ樹
脂２に充填したものである。この複合材料層の上
には、未硬化状の粘弾性材料３を層状に設けてい
る。粘弾性材料３には、ポリオール樹脂とポリイ
ソシアネート化合物からなる材料を用いた。前記
材料は、硬化した状態で、室温でtanδ＝1.5をも
つ。 FIG. 1 shows a cross-sectional view of the fiber-reinforced composite material prepreg sheet of the present invention. In the figure, carbon fibers 1 are oriented in one direction and filled in an epoxy resin 2 that has been semi-cured. On this composite material layer, an uncured viscoelastic material 3 is provided in a layered manner. As the viscoelastic material 3, a material made of a polyol resin and a polyisocyanate compound was used. The material has tan δ=1.5 at room temperature in the cured state.
第２図に第１図実施例のプリプレグシートを用
いて、オートクレーブ法により作製した複合材料
の断面図を示す。この例では第１図に示したカー
ボン繊維１とエポキシ樹脂２の硬化物からなる複
合材料層４と、粘弾性材料３とを積層一体化した
ものである。 FIG. 2 shows a cross-sectional view of a composite material produced by an autoclave method using the prepreg sheet of the example shown in FIG. In this example, a composite material layer 4 made of a cured product of carbon fiber 1 and epoxy resin 2 shown in FIG. 1 and a viscoelastic material 3 are laminated and integrated.
第３図に、第２図実施例の複合材料の損失係数
と周波数との関係を示す。複合材料試験片に曲げ
振動を加え測定した。図中実線５は第２図実施例
の複合材料の特性、破線６は従来のプリプレグを
用いて作製した繊維強化複合材料の特性である。
いずれも、固有振動数での自由減衰カーブより損
失係数を求めた。図より明らかなとおり、本発明
のプリプレグを用いて作製した複合材料は従来の
ものに比較して、大きな振動減衰特性が得られ
た。 FIG. 3 shows the relationship between the loss coefficient and frequency of the composite material of the example in FIG. 2. Bending vibration was applied to the composite material test piece and measured. The solid line 5 in the figure shows the characteristics of the composite material of the example in FIG. 2, and the broken line 6 shows the characteristics of the fiber-reinforced composite material produced using conventional prepreg.
In both cases, the loss coefficient was determined from the free damping curve at the natural frequency. As is clear from the figure, the composite material produced using the prepreg of the present invention had greater vibration damping characteristics than the conventional material.
以上実施例ではカーボン繊維を使用した例を示
したが、その他ガラス繊維などの無機強化繊維、
アラミド繊維などの有機強化繊維を用いても同効
である。 In the above examples, carbon fibers were used, but other inorganic reinforcing fibers such as glass fibers,
The same effect can be obtained by using organic reinforcing fibers such as aramid fibers.
以上のように本発明によれば、振動減衰特性の
大きな繊維強化複合材料を実現することが可能と
なり、人工衛星などの宇宙構造物における搭載機
器の故障やアンテナの位置精度の低下、自動車な
どの騒音問題を解決できる効果を有するものであ
る。
As described above, according to the present invention, it is possible to realize a fiber-reinforced composite material with high vibration damping characteristics, which can prevent the failure of onboard equipment in space structures such as artificial satellites, reduce the positional accuracy of antennas, etc. This has the effect of solving noise problems.
第１図は本発明の実施例を示す断面図、第２図
は第１図実施例のプリプレグシートを用いて作製
した複合材料の断面図、第３図は第２図実施例の
複合材料と従来のプリプレグシートを用いて作製
した複合材料の損失係数の比較を示す図である。
１……カーボン繊維、２……半硬化処理したエ
ポキシ樹脂、３……粘弾性材料、４……複合材料
層。
FIG. 1 is a sectional view showing an example of the present invention, FIG. 2 is a sectional view of a composite material made using the prepreg sheet of the example of FIG. 1, and FIG. 3 is a sectional view of the composite material of the example of FIG. 2. FIG. 3 is a diagram showing a comparison of loss coefficients of composite materials produced using conventional prepreg sheets. 1... Carbon fiber, 2... Semi-cured epoxy resin, 3... Viscoelastic material, 4... Composite material layer.
Claims (1)
はアラミド繊維などの有機強化繊維をエポキシ樹
脂などの樹脂に含浸して半硬化処理した複合材料
層と、半硬化状又は未硬化状の粘弾性材料層とを
積層一体化したことを特徴とする繊維強化複合材
料プリプレグシート。1 A composite material layer in which inorganic reinforcing fibers such as carbon and glass fibers or organic reinforcing fibers such as aramid fibers are impregnated with resin such as epoxy resin and semi-cured, and a semi-cured or uncured viscoelastic material layer. A fiber-reinforced composite material prepreg sheet characterized by an integrated lamination of.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63325218A JPH02169634A (en) | 1988-12-22 | 1988-12-22 | Prepreg sheet of fiber-reinforced composite material |
| US07/905,222 US5487928A (en) | 1988-12-22 | 1992-06-29 | Fiber reinforced composite material and a process for the production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63325218A JPH02169634A (en) | 1988-12-22 | 1988-12-22 | Prepreg sheet of fiber-reinforced composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02169634A JPH02169634A (en) | 1990-06-29 |
| JPH0443932B2 true JPH0443932B2 (en) | 1992-07-20 |
Family
ID=18174344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63325218A Granted JPH02169634A (en) | 1988-12-22 | 1988-12-22 | Prepreg sheet of fiber-reinforced composite material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02169634A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04251714A (en) * | 1991-01-28 | 1992-09-08 | Nec Corp | Manufacture of carbon fiber reinforced composite material |
| CN104763100B (en) * | 2015-03-06 | 2016-09-14 | 中国人民解放军国防科学技术大学 | Big plate of shelter with radar invisible and bulletproof function and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3472730A (en) * | 1967-12-28 | 1969-10-14 | Minnesota Mining & Mfg | Heat-curable filament-reinforced resinous sheeting and laminating process using same |
| JPS6063229A (en) * | 1983-08-01 | 1985-04-11 | アメリカン・サイアナミド・カンパニ− | Interleaved resin matrix composite material with improved compression properties |
| JPS60231738A (en) * | 1984-03-30 | 1985-11-18 | アメリカン・サイアナミド・カンパニ− | Manufacture of interleaf-containing fiber resin matrix prepreg textile |
| JPS62187706A (en) * | 1986-01-31 | 1987-08-17 | Mitsubishi Petrochem Co Ltd | Catalyst for olefin polymerization |
| JPS6397998A (en) * | 1986-10-15 | 1988-04-28 | 株式会社ブリヂストン | Magnetic composite type damping material |
-
1988
- 1988-12-22 JP JP63325218A patent/JPH02169634A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3472730A (en) * | 1967-12-28 | 1969-10-14 | Minnesota Mining & Mfg | Heat-curable filament-reinforced resinous sheeting and laminating process using same |
| JPS6063229A (en) * | 1983-08-01 | 1985-04-11 | アメリカン・サイアナミド・カンパニ− | Interleaved resin matrix composite material with improved compression properties |
| JPS60231738A (en) * | 1984-03-30 | 1985-11-18 | アメリカン・サイアナミド・カンパニ− | Manufacture of interleaf-containing fiber resin matrix prepreg textile |
| JPS62187706A (en) * | 1986-01-31 | 1987-08-17 | Mitsubishi Petrochem Co Ltd | Catalyst for olefin polymerization |
| JPS6397998A (en) * | 1986-10-15 | 1988-04-28 | 株式会社ブリヂストン | Magnetic composite type damping material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02169634A (en) | 1990-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4323623A (en) | Composite plastic structure and method for producing same | |
| KR100286153B1 (en) | Complex molding apparatus, high pressure co-curing molding method using the same, and honeycomb core molded product manufactured therefrom | |
| US5401564A (en) | Materials and processes for fabricating formed composite articles and use in shoe arch | |
| US5034256A (en) | Closeout configuration for honeycomb core composite sandwich panels | |
| US6632502B1 (en) | Method for fabricating an advanced composite aerostructure article having an integral co-cured fly away hollow mandrel | |
| US5518796A (en) | Near-surface enhancement of honeycomb sandwich structures to improve durability using a foaming fiber-filled adhesive | |
| US4680216A (en) | Method for stabilizing thick honeycomb core composite articles | |
| JPH04312237A (en) | Laminated damping material, fiber reinforced composite material having the material in inner layer and its manufacture | |
| EP1660307B1 (en) | Window skin panel and method of making same | |
| US10611328B2 (en) | Composite material structural member and method of manufacturing the composite material structural member | |
| US5487928A (en) | Fiber reinforced composite material and a process for the production thereof | |
| JPH0443931B2 (en) | ||
| JPH0443932B2 (en) | ||
| JPH0554825B2 (en) | ||
| JPH084280Y2 (en) | Fiber reinforced composite cylindrical shell | |
| JPH0554824B2 (en) | ||
| US20180370185A1 (en) | Sandwich Panel | |
| JPH0798365B2 (en) | Method for producing fiber-reinforced composite material | |
| JPH04125136A (en) | Fiber reinforced composite material | |
| JPH0558395A (en) | Thrust tube | |
| JP2705319B2 (en) | Method for producing carbon fiber reinforced composite material | |
| JPH03120035A (en) | Manufacture of fiber-reinforced composite material | |
| JPH02209234A (en) | Preparation of fiber reinforced composite material | |
| JPH02209235A (en) | Preparation of fiber reinforced composite material | |
| JPH01204733A (en) | Fiber-reinforced composite |