JP5151499B2 - Method for forming fiber-reinforced composite material and fiber-reinforced composite material - Google Patents

Method for forming fiber-reinforced composite material and fiber-reinforced composite material Download PDF

Info

Publication number
JP5151499B2
JP5151499B2 JP2008009456A JP2008009456A JP5151499B2 JP 5151499 B2 JP5151499 B2 JP 5151499B2 JP 2008009456 A JP2008009456 A JP 2008009456A JP 2008009456 A JP2008009456 A JP 2008009456A JP 5151499 B2 JP5151499 B2 JP 5151499B2
Authority
JP
Japan
Prior art keywords
fiber
nonwoven fabric
composite material
reinforced composite
long fibers
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.)
Active
Application number
JP2008009456A
Other languages
Japanese (ja)
Other versions
JP2009166428A (en
Inventor
友裕 伊藤
眞人 田所
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yokohama Rubber Co Ltd
Original Assignee
Yokohama Rubber Co Ltd
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
Application filed by Yokohama Rubber Co Ltd filed Critical Yokohama Rubber Co Ltd
Priority to JP2008009456A priority Critical patent/JP5151499B2/en
Publication of JP2009166428A publication Critical patent/JP2009166428A/en
Application granted granted Critical
Publication of JP5151499B2 publication Critical patent/JP5151499B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Reinforced Plastic Materials (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Nonwoven Fabrics (AREA)

Description

本発明は、熱硬化性或いは常温硬化系の樹脂中に補強繊維を埋設してなる繊維補強複合材料の成形方法及び繊維補強複合材料に関し、更に詳しくは、ＶａＲＴＭ(Vacuum Assisted Resin Transfer Molding:真空圧樹脂含浸成形法)などのＲＴＭ(Resin Transfer Molding:樹脂含浸成形法)により成形した際の樹脂含浸性を改善するようにした繊維補強複合材料の成形方法及び繊維補強複合材料に関する。   The present invention relates to a method for molding a fiber reinforced composite material in which reinforcing fibers are embedded in a thermosetting or room temperature curable resin and a fiber reinforced composite material, and more particularly, VaRTM (Vacuum Assisted Resin Transfer Molding: vacuum pressure). The present invention relates to a fiber-reinforced composite material molding method and a fiber-reinforced composite material that improve resin impregnation properties when molded by RTM (Resin Transfer Molding) such as resin impregnation molding method.

炭素繊維などの補強繊維に熱硬化性マトリクス樹脂を含浸させたプリプレグを積層して硬化させた繊維補強複合材料は、軽量で機械的強度も高いため、航空機の構造材料として広く適用されている。しかし、マトリックス樹脂の伸度が低くて脆いため、靭性（耐衝撃性）に劣る欠点があり、衝撃を受けた際の内部破壊により強度が低下するという問題がある。   A fiber reinforced composite material obtained by laminating and curing a prepreg obtained by impregnating a thermosetting matrix resin with a reinforcing fiber such as carbon fiber is widely used as an aircraft structural material because it is lightweight and has high mechanical strength. However, since the elongation of the matrix resin is low and brittle, there is a disadvantage that it is inferior in toughness (impact resistance), and there is a problem that the strength is reduced due to internal fracture when subjected to impact.

そこで、従来、上記対策として、例えば、靭性に優れた熱可塑性の有機繊維をランダムに配向した不織布を補強繊維間に配置することにより、衝撃を緩和すると共に衝撃時の亀裂が伝播して繊維補強複合材料の層間で進行するのを抑制するようにした技術が知られている（例えば、特許文献１参照）。また、そのような補強繊維と不織布を積層し、ＲＴＭにより成形することが提案されている(例えば、特許文献２参照)。   Therefore, conventionally, as a countermeasure, for example, a nonwoven fabric in which thermoplastic organic fibers excellent in toughness are randomly oriented is disposed between the reinforcing fibers, thereby mitigating the impact and propagating the cracks at the time of the impact to reinforce the fiber. A technique is known that suppresses progress between layers of a composite material (see, for example, Patent Document 1). In addition, it has been proposed that such reinforcing fibers and nonwoven fabric are laminated and molded by RTM (see, for example, Patent Document 2).

しかしながら、ＲＴＭにより成形した際に、型内に注入した樹脂の流れが非配向性の不織布により阻害され、それにより樹脂欠損の問題が発生し、樹脂含浸性に難がある。
特開平１０−１５８４１７号公報 ＷＯ００／５６５３９号公報 However, when molded by RTM, the flow of the resin injected into the mold is hindered by the non-oriented non-woven fabric, thereby causing a problem of resin deficiency and difficulty in resin impregnation.
Japanese Patent Laid-Open No. 10-158417 WO00 / 56539

本発明の目的は、ＲＴＭにより成形した際の樹脂含浸性を改善することが可能な繊維補強複合材料の成形方法及び繊維補強複合材料を提供することにある。   An object of the present invention is to provide a fiber-reinforced composite material molding method and a fiber-reinforced composite material capable of improving the resin impregnation property when molded by RTM.

上記目的を達成する本発明の繊維補強複合材料の成形方法は、成形型内に長繊維からなる補強繊維を配向した補強基材と不織布を積層してなる積層体を配置した後、前記成形型内に熱硬化性または常温硬化系のマトリックス樹脂を注入して繊維補強複合材料を成形する方法であって、前記不織布が熱可塑性樹脂製の長繊維を配向した不織布からなり、該不織布において前記長繊維の任意の位置で３０ｃｍの長さを取ってその両端間を直線で結んだ時の直線の角度が前記補強繊維の配向方向に対して５度以下となるように延在する長繊維の比率が４０〜１００％であり、該不織布の目付が３〜３０ｇ／ｍ ２ であることを特徴とする。 The molding method of the fiber-reinforced composite material of the present invention that achieves the above object is the molding die after arranging a laminate formed by laminating a reinforcing base material in which reinforcing fibers made of long fibers are oriented and a nonwoven fabric in a molding die. a thermosetting or cold setting based matrix resin injection to a method of molding a fiber-reinforced composite material within, Ri Do a nonwoven fabric in which the nonwoven fabric is oriented long fibers of thermoplastic resin, wherein in said non-woven fabric A long fiber extending 30 mm at an arbitrary position of the long fiber and extending so that the angle of the straight line when the both ends are connected with a straight line is 5 degrees or less with respect to the orientation direction of the reinforcing fiber ratio is 40 to 100% weight per unit area of the nonwoven fabric is characterized 3 to 30 g / m 2 der Rukoto.

本発明の繊維補強複合材料は、長繊維からなる補強繊維を配向した補強基材と不織布を積層してなる積層体を熱硬化性または常温硬化系のマトリックス樹脂中に埋設した繊維補強複合材であって、前記不織布が熱可塑性樹脂製の長繊維を配向した不織布からなり、該不織布において前記長繊維の任意の位置で３０ｃｍの長さを取ってその両端間を直線で結んだ時の直線の角度が前記補強繊維の配向方向に対して５度以下となるように延在する長繊維の比率が４０〜１００％であり、該不織布の目付が３〜３０ｇ／ｍ ２ であることを特徴とする。 The fiber-reinforced composite material of the present invention is a fiber-reinforced composite material in which a laminated body formed by laminating a reinforcing base material in which reinforcing fibers made of long fibers are oriented and a nonwoven fabric is embedded in a thermosetting or room temperature curing matrix resin. there are, Ri Do from the non-woven fabric is oriented long fibers of thermoplastic resin nonwoven fabric, a straight line when connecting with a straight line between its ends by taking a length of 30cm at an arbitrary position of the long fibers in the nonwoven fabric angle is 40 to 100 percent proportion of long fibers extending to be 5 degrees or less with respect to the orientation direction of the reinforcing fibers, the basis weight of the nonwoven fabric is a 3 to 30 g / m 2 der Rukoto Features.

上述した本発明によれば、配向性の不織布を用いるため、ＲＴＭにより成形した際に、成形型内に注入した樹脂が不織布の長繊維の配向方向に沿って流れ易くなるため、樹脂の欠損の改善が可能になる。   According to the above-described present invention, since the oriented nonwoven fabric is used, the resin injected into the mold becomes easy to flow along the orientation direction of the long fibers of the nonwoven fabric when molded by RTM. Improvement is possible.

以下、本発明の実施の形態について添付の図面を参照しながら詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

図１，２は本発明の繊維補強複合材料の一実施形態を示す。繊維補強複合材料１は、長繊維からなる補強繊維２ａを一方向に引き揃えて配向させた補強基材２と、熱可塑性樹脂製の長繊維３ａを配向した不織布３とを積層してなる積層体４を熱硬化性または常温硬化系のマトリックス樹脂からなる樹脂層５中に埋設した構造になっている。補強基材２と不織布３は交互に積層され、不織布３が各補強基材２間に配設されている。不織布３に靭性に優れた熱可塑性樹脂を使用することで、従来の非配向性の不織布と同様に、衝撃を緩和すると共に衝撃時の亀裂が伝播して繊維補強複合材料の層間で進行するのを抑制し、それにより衝撃による内部破壊を抑えて耐衝撃性を高めるようにしている。   1 and 2 show an embodiment of the fiber-reinforced composite material of the present invention. The fiber-reinforced composite material 1 is a laminate formed by laminating a reinforcing substrate 2 in which reinforcing fibers 2a made of long fibers are aligned and oriented in one direction and a nonwoven fabric 3 in which long fibers 3a made of thermoplastic resin are oriented. The body 4 is embedded in a resin layer 5 made of a thermosetting or room temperature curing matrix resin. The reinforcing substrate 2 and the nonwoven fabric 3 are alternately laminated, and the nonwoven fabric 3 is disposed between the reinforcing substrates 2. By using a thermoplastic resin having excellent toughness for the nonwoven fabric 3, as in the case of a conventional non-oriented nonwoven fabric, the impact is alleviated and cracks at the time of impact propagate and progress between the layers of the fiber-reinforced composite material. This suppresses internal breakage due to impact and improves impact resistance.

補強基材２は擬似等方性となるように積層されている。その補強基材２の補強繊維２ａとしては、従来公知のものが使用でき、例えば、炭素繊維、ガラス繊維、アラミド繊維、ポリエステル繊維、ＰＢＯ繊維などの有機または無機繊維を挙げることができる。補強繊維２ａの形態は、長繊維状モノフィラメントであっても、これらを束にしたものであってもよいし、また織物、ノンクリンプ織物、編物でもよい。補強基材２は上記のように擬似等方にして積層するのが好ましいが、必ずしもそれに限定されない。   The reinforcing base material 2 is laminated so as to be pseudo-isotropic. As the reinforcing fibers 2a of the reinforcing substrate 2, conventionally known fibers can be used, and examples thereof include organic or inorganic fibers such as carbon fibers, glass fibers, aramid fibers, polyester fibers, and PBO fibers. The form of the reinforcing fiber 2a may be a long-fiber monofilament, a bundle of these, or a woven fabric, a non-crimp woven fabric, or a knitted fabric. The reinforcing substrate 2 is preferably laminated in a pseudo isotropic manner as described above, but is not necessarily limited thereto.

補強繊維２ａが繊維補強複合材料１に占める割合としては、繊維補強複合材料１の全体積の４０〜６５体積％の範囲にするのがよい。補強繊維２ａの割合が繊維補強複合材料１の全体積の４０体積％より低いと、複合材物性に対する繊維の寄与率が下がり、十分な複合材物性が得られ難くなる。逆に６５体積％を超えると、樹脂欠損などの欠陥を生じ易くなる。   The proportion of the reinforcing fiber 2a in the fiber-reinforced composite material 1 is preferably in the range of 40 to 65% by volume of the total volume of the fiber-reinforced composite material 1. If the proportion of the reinforcing fibers 2a is lower than 40% by volume of the total volume of the fiber-reinforced composite material 1, the contribution ratio of the fibers to the composite material properties decreases, and it becomes difficult to obtain sufficient composite material properties. Conversely, if it exceeds 65% by volume, defects such as resin defects are likely to occur.

配向性の不織布３の長繊維３ａに使用する熱可塑性樹脂としては、衝撃を緩和すると共に衝撃時の亀裂の伝播を抑制することができれば、いずれの熱可塑性樹脂を使用してもよく、例えば、ポリエステル、ポリアラミド、ポリアセタール、ポリアミド、ポリイミド、ポリエーテルイミド、ポリエーテルサルフォンなどを挙げることができる。これらの樹脂を単独、或いは２つ以上ブレンドして使用することができる。好ましくは、長繊維３ａを構成する熱可塑性樹脂の主成分をポリエステルにするのが、入手性及びコストの点からよい。   As the thermoplastic resin used for the long fibers 3a of the oriented nonwoven fabric 3, any thermoplastic resin may be used as long as it can mitigate the impact and suppress the propagation of cracks during the impact. Examples thereof include polyester, polyaramid, polyacetal, polyamide, polyimide, polyetherimide, polyethersulfone and the like. These resins can be used alone or in a blend of two or more. Preferably, the main component of the thermoplastic resin constituting the long fibers 3a is made of polyester in terms of availability and cost.

不織布３の目付は、３〜３０ｇ／ｍ２の範囲にする。不織布４の目付が３ｇ／ｍ２より低くなると、衝撃を緩和すると共に衝撃時の亀裂の伝播を効果的に抑制することが難しくなる。逆に３０ｇ／ｍ２を超えると、ＲＴＭにより成形した際の樹脂含浸性を改善することが難しくなる。好ましくは、軽量化と作業性の点から１５ｇ／ｍ２以下にするのがよい。 With eyes nonwoven fabric 3 is that be in the range of 3 to 30 g / m 2. When the basis weight of the nonwoven fabric 4 is lower than 3 g / m 2, it is difficult to mitigate the impact and effectively suppress the propagation of cracks during the impact. On the other hand, when it exceeds 30 g / m 2 , it becomes difficult to improve the resin impregnation property when molded by RTM. Preferably, the weight is 15 g / m 2 or less from the viewpoint of weight reduction and workability.

マトリックス樹脂に使用する樹脂としても、従来と同様のものが使用でき、例えば、熱硬化性樹脂としては、エポキシ樹脂、ビスマレイミド樹脂、不飽和ポリエステル樹脂、ポリイミド樹脂などを挙げることができる。また、ビニルエステル樹脂やエポキシ樹脂、不飽和ポリエステル樹脂による常温硬化型のマトリックス樹脂を用いてもよい。   As the resin used for the matrix resin, the same resin as the conventional one can be used. Examples of the thermosetting resin include an epoxy resin, a bismaleimide resin, an unsaturated polyester resin, and a polyimide resin. Further, a room temperature curable matrix resin made of vinyl ester resin, epoxy resin, or unsaturated polyester resin may be used.

以下、図３〜７を参照しながら、上述した繊維補強複合材料１を成形する本発明の方法について説明する。   Hereinafter, the method of this invention which shape | molds the fiber reinforced composite material 1 mentioned above is demonstrated, referring FIGS.

先ず、図３に示すように、成形型１０の下型１１内に、長繊維からなる補強繊維２ａを一方向に引き揃えて配向させた補強基材２と熱可塑性樹脂製の長繊維３ａを配向した不織布３を積層してなる積層体４を配置する。その際、下型１１内に補強基材２と不織布３を交互に積層しながら積層体４を形成するようにしてもよく、また図４に示すように、予め下型１１外で積層体４を形成し、それを下型１１内にセットするようにしてもよい。下型１１の外部で積層体４を形成する場合は、積層した補強基材２と不織布３を縫い合わせて両者を固定しておくのが、移動の際などに両者がずれるのを防止する上でよい。   First, as shown in FIG. 3, a reinforcing substrate 2 in which reinforcing fibers 2a made of long fibers are aligned in one direction and oriented in a lower mold 11 of a mold 10 and long fibers 3a made of a thermoplastic resin are arranged. A laminate 4 formed by laminating oriented nonwoven fabrics 3 is disposed. At that time, the laminated body 4 may be formed while alternately laminating the reinforcing base material 2 and the nonwoven fabric 3 in the lower mold 11, and as shown in FIG. May be formed and set in the lower mold 11. When the laminated body 4 is formed outside the lower mold 11, the laminated reinforcing base material 2 and the nonwoven fabric 3 are sewn together to fix them in order to prevent them from shifting during movement. Good.

不織布３は、好ましくは、図５に示すように、ロール２０に巻き取られた長尺の不織布３０をロール２０から引き出して切断することにより形成するのがよく、これにより所定長さの不織布３を容易に形成することができる。   As shown in FIG. 5, the nonwoven fabric 3 is preferably formed by drawing a long nonwoven fabric 30 wound around a roll 20 from the roll 20 and cutting it, whereby the nonwoven fabric 3 having a predetermined length is formed. Can be easily formed.

積層体４を下型１１内に配置した後、図６に示すように、成形型１０の上型１２を閉じる。次いで、図７に示すように、上型１２に形成した吸引口１３から真空吸引して成形型１０の内部を負圧にする一方、下型１１に形成した樹脂注入口１４から成形型１０内に液状の熱硬化性マトリックス樹脂を注入する。注入後、成形型１０をオーブン中で加熱し、図１に示す繊維補強複合材料１を得る。   After the laminated body 4 is arranged in the lower mold 11, the upper mold 12 of the mold 10 is closed as shown in FIG. Next, as shown in FIG. 7, vacuum suction is performed from the suction port 13 formed in the upper die 12 to make the inside of the molding die 10 have a negative pressure, while the resin injection port 14 formed in the lower die 11 is inserted into the molding die 10. A liquid thermosetting matrix resin is injected into the container. After the injection, the mold 10 is heated in an oven to obtain the fiber reinforced composite material 1 shown in FIG.

上述した本発明によれば、配向性の不織布３を使用することで、ＲＴＭによる成形した際に、成形型１０内に注入した樹脂が不織布３の長繊維３ａの配向方向に沿って流れ易くなるため、樹脂が成形型１０内で従来より円滑に流れることができる。その結果、樹脂の欠損が改善され、樹脂含浸性の向上が可能になる。     According to the present invention described above, by using the oriented nonwoven fabric 3, the resin injected into the molding die 10 easily flows along the orientation direction of the long fibers 3 a of the nonwoven fabric 3 when molded by RTM. Therefore, the resin can flow more smoothly in the mold 10 than before. As a result, the defect of the resin is improved and the resin impregnation property can be improved.

本発明において、配向性の不織布３は、各長繊維３ａが平行で同じ方向に配向している必要はなく、所定の配向方向に対して５度以下の角度で延在する長繊維３ａの比率を全体の４０〜１００％の範囲とする。これにより、上述した樹脂含浸性を向上することができる。不織布３をロール２０から引き出して形成する場合、長繊維３ａの配向方向は引き出し方向になるため、上記５度以下の角度は引き出し方向に対する角度である。なお、ここで言う５度以下の角度とは、長繊維３ａの任意の位置で３０ｃｍの長さを取り、その両端間を直線で結んだ時の直線の角度である。 In the present invention, the oriented nonwoven fabric 3 does not require that the long fibers 3a are parallel and oriented in the same direction, and the ratio of the long fibers 3a extending at an angle of 5 degrees or less with respect to a predetermined orientation direction. Is in the range of 40 to 100% of the whole . Thereby , the resin impregnation property mentioned above can be improved. When the nonwoven fabric 3 is formed by being drawn from the roll 20, the orientation direction of the long fibers 3a is the drawing direction, and thus the angle of 5 degrees or less is an angle with respect to the drawing direction. In addition, the angle of 5 degrees or less said here is a straight angle when taking the length of 30 cm in the arbitrary positions of the long fiber 3a, and connecting the both ends with a straight line.

本発明は、上記実施形態では、不織布３として、長繊維３ａを一方向に配向したものを挙げたが、それに加えて、更に熱可塑性樹脂製の長繊維を長繊維４ａと略直交する方向（補強繊維２ａの配向方向と略直交する方向）に配向（延在）するようにした不織布であってもよい。その場合、不織布の目付は、長繊維４ａについて少なくとも３ｇ／ｍ２確保し、合計で３０ｇ／ｍ２以下とする。また、上記した比率は、長繊維３ａと略直交する方向に延在する熱可塑性樹脂製の長繊維も含めた比率である。この場合も、長繊維３ａの比率が４０体積％以下とならにように構成するのがよい。なお、ここで言う略直交するとは、直交する方向に対して±５度の角度範囲を言う。 In the above-described embodiment, the nonwoven fabric 3 is a nonwoven fabric in which the long fibers 3a are oriented in one direction. In addition, a long fiber made of a thermoplastic resin is substantially orthogonal to the long fibers 4a ( The nonwoven fabric may be oriented (extended) in a direction substantially orthogonal to the orientation direction of the reinforcing fibers 2a. In that case, the basis weight of the nonwoven fabric is at least 3 g / m 2 to ensure the long fibers 4a, it shall be the 30 g / m 2 or less in total. Moreover, the above-mentioned ratio is a ratio including long fibers made of a thermoplastic resin extending in a direction substantially orthogonal to the long fibers 3a. Also in this case, it is preferable that the ratio of the long fibers 3a be 40% by volume or less. Note that “substantially orthogonal” here means an angle range of ± 5 degrees with respect to the orthogonal direction.

本発明の繊維補強複合材料の一実施形態を示す拡大断面図である。It is an expanded sectional view showing one embodiment of the fiber reinforced composite material of the present invention. 図１の繊維補強複合材料の要部拡大横断面図である。It is a principal part expanded horizontal sectional view of the fiber reinforced composite material of FIG. 積層体を配置する工程を示す説明図である。It is explanatory drawing which shows the process of arrange | positioning a laminated body. 積層体を形成する他の工程を示す説明図である。It is explanatory drawing which shows the other process of forming a laminated body. 不織布を形成する好ましい工程を示す説明図である。It is explanatory drawing which shows the preferable process of forming a nonwoven fabric. 閉型する工程を示す説明図である。It is explanatory drawing which shows the process of closing a mold. 樹脂を注入する工程を示す説明図である。It is explanatory drawing which shows the process of inject | pouring resin.

符号の説明Explanation of symbols

１ 繊維補強複合材料
２ 補強基材
２ａ 補強繊維
３ 不織布
３ａ 長繊維
４ 積層体
５ 樹脂層 DESCRIPTION OF SYMBOLS 1 Fiber reinforced composite material 2 Reinforcement base material 2a Reinforcing fiber 3 Nonwoven fabric 3a Long fiber 4 Laminate 5 Resin layer

Claims (7)

成形型内に長繊維からなる補強繊維を配向した補強基材と不織布を積層してなる積層体を配置した後、前記成形型内に熱硬化性または常温硬化系のマトリックス樹脂を注入して繊維補強複合材料を成形する方法であって、前記不織布が熱可塑性樹脂製の長繊維を配向した不織布からなり、該不織布において前記長繊維の任意の位置で３０ｃｍの長さを取ってその両端間を直線で結んだ時の直線の角度が前記補強繊維の配向方向に対して５度以下となるように延在する長繊維の比率が４０〜１００％であり、該不織布の目付が３〜３０ｇ／ｍ ２ である繊維補強複合材料の成形方法。 After a laminated body made by laminating a reinforcing base material in which reinforcing fibers made of long fibers are oriented and a nonwoven fabric is placed in the mold, a thermosetting or room temperature curing matrix resin is injected into the mold and the fibers a method of molding a reinforced composite material, Ri Do a nonwoven fabric in which the nonwoven fabric is oriented long fibers of thermoplastic resin, across it to take a length of 30cm at an arbitrary position of the long fibers in the nonwoven fabric The ratio of long fibers extending so that the angle of the straight line when it is connected with a straight line is 5 degrees or less with respect to the orientation direction of the reinforcing fiber is 40 to 100%, and the basis weight of the nonwoven fabric is 3 to 30 g / m 2 der Ru molding method of a fiber reinforced composite material. 前記不織布がロールに巻き取られた長尺の不織布をロールから引き出して切断することにより形成される請求項１に記載の繊維補強複合材料の成形方法。 The method for forming a fiber-reinforced composite material according to claim 1 , wherein the nonwoven fabric is formed by drawing a long nonwoven fabric wound around a roll from the roll and cutting it. 前記不織布の長繊維を構成する熱可塑性樹脂の主成分がポリエステルである請求項１又は２に記載の繊維補強複合材料の成形方法。 The method for molding a fiber-reinforced composite material according to claim 1 or 2 , wherein a main component of the thermoplastic resin constituting the long fibers of the nonwoven fabric is polyester. 前記補強繊維が繊維補強複合材料の全体積の４０〜６５体積％である請求項１乃至３のいずれか１項に記載の繊維補強複合材料の成形方法。 The method for molding a fiber-reinforced composite material according to any one of claims 1 to 3 , wherein the reinforcing fiber is 40 to 65% by volume of the total volume of the fiber-reinforced composite material. 長繊維からなる補強繊維を配向した補強基材と不織布を積層してなる積層体を熱硬化性または常温硬化系のマトリックス樹脂中に埋設した繊維補強複合材であって、前記不織布が熱可塑性樹脂製の長繊維を配向した不織布からなり、該不織布において前記長繊維の任意の位置で３０ｃｍの長さを取ってその両端間を直線で結んだ時の直線の角度が前記補強繊維の配向方向に対して５度以下となるように延在する長繊維の比率が４０〜１００％であり、該不織布の目付が３〜３０ｇ／ｍ ２ である繊維補強複合材料。 A fiber reinforced composite material in which a laminated body formed by laminating a nonwoven fabric and a reinforcing base material in which reinforcing fibers composed of long fibers are laminated is embedded in a thermosetting or room temperature curing matrix resin, and the nonwoven fabric is a thermoplastic resin. Ri Do from manufacturing nonwoven oriented long fibers, the orientation direction of the straight line angle the reinforcing fibers when connecting a straight line between its ends by taking a length of 30cm at an arbitrary position of the long fibers in the nonwoven fabric relative proportion of long fibers extending to be 5 degrees or less is 40 to 100% weight per unit area of the nonwoven fabric is 3 to 30 g / m 2 der Ru fiber reinforced composite material. 前記不織布の長繊維を構成する熱可塑性樹脂の主成分がポリエステルである請求項５に記載の繊維補強複合材料。 The fiber-reinforced composite material according to claim 5 , wherein a main component of the thermoplastic resin constituting the long fibers of the nonwoven fabric is polyester. 前記補強繊維が繊維補強複合材料の全体積の４０〜６５体積％である請求項５又は６に記載の繊維補強複合材料。 The fiber-reinforced composite material according to claim 5 or 6 , wherein the reinforcing fiber is 40 to 65% by volume of the total volume of the fiber-reinforced composite material.
JP2008009456A 2008-01-18 2008-01-18 Method for forming fiber-reinforced composite material and fiber-reinforced composite material Active JP5151499B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008009456A JP5151499B2 (en) 2008-01-18 2008-01-18 Method for forming fiber-reinforced composite material and fiber-reinforced composite material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008009456A JP5151499B2 (en) 2008-01-18 2008-01-18 Method for forming fiber-reinforced composite material and fiber-reinforced composite material

Publications (2)

Publication Number Publication Date
JP2009166428A JP2009166428A (en) 2009-07-30
JP5151499B2 true JP5151499B2 (en) 2013-02-27

Family

ID=40968165

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008009456A Active JP5151499B2 (en) 2008-01-18 2008-01-18 Method for forming fiber-reinforced composite material and fiber-reinforced composite material

Country Status (1)

Country Link
JP (1) JP5151499B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI503344B (en) * 2009-12-17 2015-10-11 Cytec Tech Corp Multifunctional additives in engineering thermoplastics
US20160009051A1 (en) * 2013-01-30 2016-01-14 The Boeing Company Veil-stabilized Composite with Improved Tensile Strength
KR101777732B1 (en) * 2014-08-27 2017-09-12 한국생산기술연구원 Long-fiber nonwoven textile preforms including Long-fiber web layer and method of manufacturing the same and composite material including Long-fiber nonwoven textile preforms and method of manufacturing the same
KR101777744B1 (en) * 2014-10-28 2017-09-12 한국생산기술연구원 Preforms Comprising Commingled Long-Fiber Web layer, Preparation Method of Preforms and Thermoplastic Composite Material Comprising Preforms and Preparation Method Thereof
CN111635614B (en) * 2020-05-19 2023-03-24 湖北航天技术研究院总体设计所 Light heat-proof composite material and preparation method thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002113802A (en) * 2000-10-12 2002-04-16 Toray Ind Inc Composite reinforced fiber base and preform

Also Published As

Publication number Publication date
JP2009166428A (en) 2009-07-30

Similar Documents

Publication Publication Date Title
JP4803028B2 (en) Preform, FRP, and production method thereof
JP5151499B2 (en) Method for forming fiber-reinforced composite material and fiber-reinforced composite material
US8312827B1 (en) Inter/pre-cured layer/pre-cured embroidered composite laminate and method of producing same
JP4378687B2 (en) Fiber reinforced resin and method for producing the same
JP6939920B2 (en) Manufacturing method of fiber reinforced resin molded product and fiber reinforced resin molded product
JP5011613B2 (en) Preform and molding method
TW200938679A (en) Two-sided single-needle understitch sewing technique
WO2010071214A1 (en) Vehicle panel part
JP6138045B2 (en) Method for producing high-weight carbon fiber sheet for RTM method and RTM method
JPWO2018051445A1 (en) Method of forming composite material and composite material
US20050070183A1 (en) Crimp-free infusible reinforcement fabric and composite reinforced material therefrom
CN106113524A (en) A kind of prepreg tape, the loop bonding of mixed fiber yarn fabric and briquetting process thereof
CN106494022A (en) Dot matrix strengthens foam core preform and its preparation method and application
US20210283805A1 (en) Fiber-reinforced resin composite body, production method therefor, and non-woven fabric for use in fiber-reinforced resin composite body
JP4805375B2 (en) Method for manufacturing FRP structure
KR101923381B1 (en) Composite material for reinforcement and articles comprising the same
JP6455594B2 (en) Composite material
JP4940644B2 (en) Biaxial stitch substrate and preform
EP2447307A2 (en) Composite compositions
JP2007152672A (en) Three-dimensional fiber-reinforced resin composite material and three-dimensional fabric
JP5134568B2 (en) Bias stitch base material and preform and prepreg using the same
JP2007269015A (en) Production method of fiber-reinforced resin
JP4338550B2 (en) Method for manufacturing FRP structure
JP6641489B2 (en) Composite member, pultrusion molding apparatus and pultrusion molding method
JP2010076356A (en) Preform, and molding method for fiber-reinforced plastic

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20090928

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20111115

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20111116

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20120106

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20121106

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20121119

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20151214

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 5151499

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20151214

Year of fee payment: 3

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250