WO2018110404A1 - 強化繊維プリプレグ、強化繊維プリプレグのテープおよび巻取体、ならびに強化繊維プリプレグおよび強化繊維プリプレグテープの製造方法 - Google Patents
強化繊維プリプレグ、強化繊維プリプレグのテープおよび巻取体、ならびに強化繊維プリプレグおよび強化繊維プリプレグテープの製造方法 Download PDFInfo
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- WO2018110404A1 WO2018110404A1 PCT/JP2017/043949 JP2017043949W WO2018110404A1 WO 2018110404 A1 WO2018110404 A1 WO 2018110404A1 JP 2017043949 W JP2017043949 W JP 2017043949W WO 2018110404 A1 WO2018110404 A1 WO 2018110404A1
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- reinforcing fiber
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- 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
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/042—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with carbon fibres
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- 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
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/28—Treatment by wave energy or particle radiation
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- 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
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
- C08J5/241—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs using inorganic fibres
- C08J5/243—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs using inorganic fibres using carbon fibres
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- 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
- C08J2300/00—Characterised by the use of unspecified polymers
- C08J2300/24—Thermosetting resins
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- 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
- C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
Definitions
- the present invention relates to a reinforcing fiber prepreg, a tape and a wound body of the reinforcing fiber prepreg, and a manufacturing method of the reinforcing fiber prepreg and the reinforcing fiber prepreg tape.
- Reinforced fiber prepregs using carbon fibers, aramid fibers, glass fibers, etc. as reinforcing fibers can be used as structural materials for aircraft and automobiles, sports equipment, or materials for general industrial applications, taking advantage of their high specific strength and specific modulus. Has been. In the aircraft industry in particular, it is widely used for the purpose of saving fuel and reducing operating costs.
- AFP Automatic Fiber Placement
- AFP is a technique for automatically placing and laminating narrow tapes made of fibers and resin at appropriate locations.
- Patent Document 1 As a technique for lowering the adhesion between the reinforcing fiber prepreg and the contact portion of the apparatus, a method of lowering the adhesion of the reinforcing fiber prepreg by cooling the reinforcing fiber prepreg supplied when laminating the reinforcing fiber prepregs is known.
- Patent Document 1 a method of lowering the adhesion of the reinforcing fiber prepreg by cooling the reinforcing fiber prepreg supplied when laminating the reinforcing fiber prepregs is known.
- Patent Document 1 In the technology disclosed in Patent Document 1, by providing a cooling chamber in which the reinforcing fiber prepreg to be supplied is provided, adhesion at the contact portion in the laminating apparatus is avoided, and the supply and conveyance of the reinforcing fiber prepreg is smoothly performed. Can be done.
- a method of lowering the adhesiveness of the reinforcing fiber prepreg is known by making the resin harden to obtain a semi-cured reinforcing fiber prepreg (for example, patents) Reference 2).
- the adhesiveness can be lowered by curing the resin reaction rate of the matrix resin composition contained in the reinforcing fiber prepreg to 20% to 70% to obtain a semi-cured prepreg. it can.
- JP 2008-30296 A Japanese Unexamined Patent Publication No. 2016-155915
- Patent Document 1 requires a cooling device and cooling energy, and has a problem that costs increase.
- an object of the present invention is to provide a reinforcing fiber prepreg that can be suitably applied to conveyance in AFP while using a simple technique, and to manufacture a tape and a wound body using the reinforcing fiber prepreg, and a reinforcing fiber prepreg. It is to provide a method and a method for producing a reinforcing fiber prepreg tape.
- the tackiness reduction treatment is at least one of a heat treatment, a plasma irradiation treatment, and a UV (ultraviolet) irradiation treatment.
- a part of the reinforcing fiber prepreg having a thermosetting resin as a matrix is formed in the low-adhesion region by an adhesive reduction treatment selected from at least one of a heat treatment, a plasma irradiation treatment, and a UV irradiation treatment.
- the manufacturing method of the reinforced fiber prepreg characterized by these.
- the method for producing a reinforcing fiber prepreg according to [10] wherein the low-adhesion region is formed on a surface of the reinforcing fiber prepreg or a peripheral edge portion of the surface.
- FIG. 1 is a schematic perspective view of a reinforcing fiber prepreg according to an embodiment of the present invention.
- FIG. 3 is a schematic perspective view and a schematic cross-sectional view of a reinforcing fiber prepreg in which a part of the reinforcing fiber prepreg is a low-adhesion region that has been subjected to adhesiveness-reducing treatment, (B) a reinforcing fiber prepreg in which a low adhesion region is formed on the end face, and (c) a reinforcing fiber prepreg in which a low adhesion region is formed on the upper and lower surfaces.
- the edge part shape of the reinforced fiber prepreg is the schematic perspective view and schematic sectional drawing of the reinforced fiber prepreg which are smaller than a normal part, (a) The edge part is elliptical shape A reinforcing fiber prepreg, (b) a reinforcing fiber prepreg having an end of a ⁇ shape, and (c) a reinforcing fiber prepreg having an end of a ⁇ shape are shown.
- FIG. 1 is a schematic perspective view of a reinforcing fiber prepreg 1 according to an embodiment of the present invention.
- the reinforcing fiber prepreg 1 is composed of reinforcing fibers and a matrix resin.
- FIG. 1 illustrates the reinforcing fiber prepreg 1 that is relatively short in the depth direction, when applied to an AFP apparatus, the width needs to be a width that can be introduced into the AFP apparatus. .5 inch width, 1 inch width, 1/2 inch width, 1/4 inch width and 1/8 inch width can be exemplified. A certain length is required in the depth direction, and it may be wound in a spool or reel shape.
- the reinforcing fiber is not particularly limited, but for example, it is preferable to use carbon fiber, glass fiber, aramid fiber, Kevlar fiber, or the like.
- Examples of the form of the reinforcing fiber substrate include woven fabric, knitted fabric, non-woven fabric, unidirectional reinforcing fiber substrate, and non-crimp fabric.
- the low adhesion reinforcing fiber prepreg 2 includes a low adhesion part (low adhesion area) 21 and a normal part 22.
- the low-adhesion part 21 is a low-adhesion area in which the normal part 22 is subjected to an adhesive reduction process to reduce the adhesiveness.
- the resin reaction rate of the low-adhesion part 21 is preferably 0.1% to 20%, more preferably 0.1% to 15%, for example, with respect to the resin reaction rate of the normal part 22.
- the resin reaction rate of the matrix resin composition refers to the resin in the matrix resin composition contained in the low-adhesion portion 21 of the low-adhesion reinforcing fiber prepreg 2 ( For example, it means the reaction rate of epoxy resin).
- the resin reaction rate of the matrix resin composition can be calculated by measuring the amount of heat generated by differential scanning calorimetry (DSC). Specifically, it can be calculated by the following equation from the curing heating value (E0) of the matrix resin composition and the curing heating value (E1) of the resin contained in the prepreg.
- Resin reaction rate of matrix resin composition (%) ⁇ (E0 ⁇ E1) / E0 ⁇ ⁇ 100
- the prepreg becomes too rigid and may not pass through the process.
- the existence position and shape of the low-adhesion portion 21 may be in a part of the low-adhesion reinforcing fiber prepreg 2 as shown in FIG. 2, and the specific existence position and shape are not particularly limited. .
- the shape whose peripheral part of the upper and lower surfaces of the low adhesion reinforcement fiber prepreg 2 is the low adhesion part 21 can be illustrated.
- the shape whose end surface of the low adhesion reinforcement fiber prepreg 2 is the low adhesion part 21 can be illustrated.
- FIG. 2 the shape whose end surface of the low adhesion reinforcement fiber prepreg 2 is the low adhesion part 21
- a shape in which the upper and lower surfaces of the low-adhesion reinforcing fiber prepreg 2 are low-adhesion portions 21 can be exemplified.
- the low adhesive portion at the position exemplified above, for example, the contact portion between the cutting device and the reinforcing fiber prepreg becomes a low adhesive portion, and the transportability of the reinforcing fiber prepreg can be improved.
- the shape of the low adhesive portion include a dot shape and a stripe shape extending in the vertical, horizontal, and diagonal directions.
- the end shape change reinforcing fiber prepreg 3 includes an end portion 31 and a normal portion 32 whose shapes are changed.
- the shape of the end portion 31 is not particularly limited as long as the end portion 31 is partially thinner than the normal portion 32.
- the shape whose cross-sectional shape of an edge part is an ellipse can be illustrated.
- FIG. 3B a shape in which the cross-sectional shape of the end portion is a ⁇ shape can be exemplified.
- the shape whose cross-sectional shape of an edge part is (DELTA) shape can be illustrated.
- the contact area increases at the contact point between the apparatus and the end of the reinforcing fiber prepreg tape, and inconvenience occurs in the conveying process such as fluff and resin adhering to the apparatus from the end of the reinforcing fiber prepreg tape. There is a case.
- the resin reaction rate of the end portion 31 is preferably 0.1% to 20%, and more preferably 0.1% to 15%, for example, with respect to the resin reaction rate of the normal portion 32.
- the adhesiveness-reducing treatment is a treatment capable of reducing the adhesiveness
- the mechanism and form are not limited.
- at least one of a heat treatment, a plasma irradiation treatment, and a UV irradiation treatment can be exemplified.
- the energy used for the treatment is preferably in the form of propagating through space, and UV irradiation is particularly preferred from the viewpoint of easy energy control.
- FIG. 4 shows one embodiment of a method for producing a reinforcing fiber prepreg tape when the low-adhesion reinforcing fiber prepreg 2 is cut along the low-adhesion portion 21 with a slitter 4 (slit blade), (a) Is a schematic perspective view, (b) is a schematic plan view, and (b) is a schematic front sectional view.
- a low-adhesion reinforcing fiber prepreg 2 provided with a plurality of low-adhesion portions 21 in parallel can be obtained as shown in FIG.
- the cutting mechanism and the form of the slitter 4 are not limited.
- a share cutter and a score cutter can be exemplified.
- FIG. 5 shows one embodiment of a wound body 5 of a reinforcing fiber prepreg in which a part of the reinforcing fiber prepreg is a low-adhesion region that has been subjected to a tack reduction treatment
- (a) is a schematic perspective view
- (b) ) Respectively show schematic front views.
- the wound body 5 of the low adhesion reinforcing fiber prepreg is obtained by winding the low adhesion reinforcing fiber prepreg 2 as described above into a bobbin shape.
- This is a configuration in which the low adhesion reinforcing fiber prepreg 2 that is subsequently wound on the outer layer of the low adhesion reinforcing fiber prepreg 2 previously wound is directly wound.
- the adhesive reduction process is performed on the region through which the slitter 4 passes.
- a shield that does not transmit the processing energy in a region where the adhesiveness reduction processing is not performed.
- the shape of the shield for example, by providing a plurality of holes, it is possible to perform a low-adhesion treatment in a spot shape, or it is possible to perform a low-adhesion treatment in a stripe shape by providing a slit.
- the reinforcing fiber prepreg 1 when the reinforcing fiber prepreg 1 is at a high temperature, it is reinforced.
- a technique in which the fiber prepreg 1 and the cutting device do not physically contact each other is desirable. In the case where physical contact is unavoidable, it is desirable to cool the reinforcing fiber prepreg 1 until the adhesiveness is lowered before contacting the cutting device.
- an adhesive reduction process at least 1 process of a heat processing, a plasma irradiation process, and UV irradiation process can be illustrated. By controlling the treatment time and treatment energy, the shape and thickness of the tackiness reduction treatment region can be controlled in the thickness direction of the reinforcing fiber prepreg 1.
- the slitter 4 is cut so as to pass through the low-adhesion portion 21 of the low-adhesion reinforcing fiber prepreg 2 that has been subjected to the adhesive reduction treatment.
- a shear cutting blade or a score cutting blade can be used as the type of blade used for cutting.
- Prepreg A prepreg “T800H / 3900-2” (reinforced fiber: carbon fiber, thermosetting matrix resin: epoxy resin) manufactured by Toray Industries, Inc. was prepared.
- the prepreg has a carbon fiber (CF) basis weight of 190 g / m 2 and a resin content of 35.5% by weight.
- Carbon fiber T800H-12K has an average single yarn diameter of 5 ⁇ m and a tensile strength of 560 kgf / mm 2 .
- this material is merely an example of a preferred embodiment of the present invention, and the present invention is not limited to these materials.
- Example 1 In Example 1, a reinforcing fiber prepreg having a resin reaction rate of 0.1% was used. Heat treatment was used as the method for reducing the tackiness. A test piece (width 15 mm, length 300 mm) was allowed to stand in an oven at 60 ° C., and the resin was reacted until the resin reaction rate reached 0.1%. It left still on a metal plate in the room temperature state, and it pressed for 1 second so that it might become 0.05 MPa from the top. Thereafter, when the metal plate and the reinforcing fiber prepreg were observed, they were not adhered. Subsequently, the reinforcing fiber prepreg was cut out to obtain a sample having a length of 100 mm and a width of 15 mm. When the sample was bent, the end-to-end distance could be 40 mm.
- Example 2 In Example 2, a reinforcing fiber prepreg having a resin reaction rate of 7.3% was used. Heat treatment was used as the method for reducing the tackiness. A test piece (width 15 mm, length 300 mm) was allowed to stand in an oven at 60 ° C., and the resin was reacted until the resin reaction rate reached 7.3%. It left still on a metal plate in the room temperature state, and it pressed for 1 second so that it might become 0.05 MPa from the top. Thereafter, when the metal plate and the reinforcing fiber prepreg were observed, they were not adhered. Subsequently, the reinforcing fiber prepreg was cut out to obtain a sample having a length of 100 mm and a width of 15 mm. When the sample was bent, the end-to-end distance could be 40 mm.
- Example 3 In Example 3, a reinforced fiber prepreg having a resin reaction rate of 14.5% was used. Heat treatment was used as the method for reducing the tackiness. A test piece (width 15 mm, length 300 mm) was allowed to stand in an oven at 60 ° C., and the resin was reacted until the resin reaction rate reached 14.5%. It left still on a metal plate in the room temperature state, and it pressed for 1 second so that it might become 0.05 MPa from the top. Thereafter, when the metal plate and the reinforcing fiber prepreg were observed, they were not adhered. Subsequently, the reinforcing fiber prepreg was cut out to obtain a sample having a length of 100 mm and a width of 15 mm. When the sample was bent, the end-to-end distance could be 40 mm.
- Comparative Example 1 In Comparative Example 1, a reinforced fiber prepreg that was uncured and had a resin reaction rate of 0% was used. It left still on a metal plate in the room temperature state, and it pressed for 1 second so that it might become 0.05 MPa from the top. Thereafter, when the metal plate and the reinforcing fiber prepreg were observed, they were adhered. Subsequently, the reinforcing fiber prepreg was cut out to obtain a sample having a length of 100 mm and a width of 15 mm. When the sample was bent, the end-to-end distance could be 40 mm.
- Comparative Example 2 In Comparative Example 2, a reinforcing fiber prepreg having a resin reaction rate of 28.2% was used. Heat treatment was used as the method for reducing the tackiness. A test piece (width 15 mm, length 300 mm) was allowed to stand in an oven at 60 ° C., and the resin was allowed to react until the resin reaction rate reached 28.2%. It left still to a metal plate in the room temperature state, and it pressed for 1 second so that it might become 0.05 MPa from the top. Thereafter, when the metal plate and the reinforcing fiber prepreg were observed, they were not adhered. Subsequently, the reinforcing fiber prepreg was cut out to obtain a sample having a length of 100 mm and a width of 15 mm. When the sample was bent, the distance between the end portions could not be reduced to 40 mm.
- Table 1 shows the resin reaction rates and evaluation results of Examples 1 to 3 and Comparative Examples 1 and 2.
- the low-adhesion reinforcing fiber prepreg according to the present invention facilitates the AFP conveyance process, and the low-adhesion reinforcing fiber prepreg can be suitably applied to AFP (Automatic Fiber Placement) used in the aircraft industry and the automobile industry.
- AFP Automatic Fiber Placement
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Abstract
Description
[1]熱硬化性樹脂をマトリクスとする強化繊維プリプレグであって、前記強化繊維プリプレグの一部が、粘着性低下処理された低粘着領域である強化繊維プリプレグ。
[2]前記低粘着領域の樹脂反応率が0.1%~20%である[1]に記載の強化繊維プリプレグ。
[3]前記粘着性低下処理が、加熱処理、プラズマ照射処理、およびUV(紫外線)照射処理のうちの少なくとも1つの処理である[1]または[2]に記載の強化繊維プリプレグ。
[4]前記強化繊維プリプレグの表面または表面の周縁部が前記低粘着領域である[1]~[3]のいずれかに記載の強化繊維プリプレグ。
[5]前記強化繊維プリプレグの端面が前記低粘着領域である[1]~[4]のいずれかに記載の強化繊維プリプレグ。
[6][1]~[5]のいずれかに記載の強化繊維プリプレグに設けられた前記低粘着領域に沿って裁断された強化繊維プリプレグテープ。
[7]熱硬化性樹脂をマトリクスに用いた強化繊維プリプレグテープであって、前記強化繊維プリプレグテープの長手方向に直交する断面における最大幅に対し、両端部からそれぞれ前記最大幅の10%まで入り込んだ領域を占める端部の断面積が、該強化繊維プリプレグテープの長手方向に直交する断面積全体の15%未満であることを特徴とする強化繊維プリプレグテープ。
[8][1]~[5]のいずれかに記載の強化繊維プリプレグに設けられた前記低粘着領域に沿って裁断された[7]に記載の強化繊維プリプレグテープ。
[9]熱硬化性樹脂をマトリクスとする強化繊維プリプレグの巻取体であって、前記強化繊維プリプレグの一部が粘着性低下処理された低粘着領域を有するとともに、先に巻き付けられた前記強化繊維プリプレグの外層上に続いて巻き付けられる前記強化繊維プリプレグが直接巻き付けられてなる強化繊維プリプレグの巻取体。
[10]熱硬化性樹脂をマトリクスとする強化繊維プリプレグの一部を、加熱処理、プラズマ照射処理、およびUV照射処理のうちの少なくとも1つから選ばれる粘着性低下処理により低粘着領域に形成することを特徴とする強化繊維プリプレグの製造方法。
[11]前記強化繊維プリプレグの表面または表面の周縁部に前記低粘着領域を形成する[10]に記載の強化繊維プリプレグの製造方法。
[12][10]または[11]に記載の製造方法によって得られた強化繊維プリプレグの前記低粘着領域に沿って裁断することを特徴とする強化繊維プリプレグテープの製造方法。
マトリックス樹脂組成物の樹脂反応率(%)={(E0-E1)/E0}×100
(プリプレグ)
東レ株式会社製プリプレグ“T800H/3900-2”(強化繊維:炭素繊維、熱硬化性マトリクス樹脂:エポキシ樹脂)を用意した。このプリプレグの炭素繊維(CF)目付けは190g/m2、樹脂含有率35.5重量%である。炭素繊維T800H-12Kの平均単糸径は5μm、引張り強度は560kgf/mm2である。ただし、この材料は、あくまで本発明の望ましい実施の形態の例示であって、本発明は、これら材料に限定されるものではない。
(マトリックス樹脂組成物の樹脂反応率の測定)
後述する実施例1~3又は比較例2で得られた半硬化プリプレグ中に含まれるマトリックス樹脂組成物を半硬化樹脂とし、この半硬化樹脂の残存発熱量(E1)と未硬化のマトリックス樹脂組成物の硬化発熱量(E0)をTAインスツルメント社製のDSC Q2000を用い、昇温速度5℃/分、-70℃~300℃の条件で測定した。マトリックス樹脂組成物の樹脂反応率は以下の式から求めた。なお、比較例1においては、プリプレグを硬化させていないため、マトリックス樹脂組成物の樹脂反応率が0%の未硬化プリプレグを用いることとした。
マトリックス樹脂組成物の樹脂反応率(%)={(E0-E1)/E0}×100
後述する実施例及び比較例で示した強化繊維プリプレグを、室温状態で金属プレート上に静置し、その上から0.05MPaとなるように1秒間プレスする。その後、金属プレートと強化繊維プリプレグが接着していたら×、接着していなかったら○とした。
後述する実施例及び比較例で示した強化繊維プリプレグを切り出し、長さ100mm、幅15mmのサンプルを得た。サンプルを曲げ、端部間距離が40mmにすることができたものを○、途中で折れたものを×とした。
実施例1では、樹脂反応率を0.1%とした強化繊維プリプレグを使用した。粘着性低下処理方法としては、熱処理を用いた。60℃のオーブンに試験片(幅15mm、長さ300mm)を静置し、樹脂反応率が0.1%となるまで樹脂を反応させた。室温状態で金属プレート上に静置し、その上から0.05MPaとなるように1秒間プレスした。その後、金属プレートと強化繊維プリプレグを観察すると、接着していなかった。続いて、強化繊維プリプレグを切り出し、長さ100mm、幅15mmのサンプルを得た。サンプルを曲げたところ、端部間距離を40mmにすることができた。
実施例2では、樹脂反応率を7.3%とした強化繊維プリプレグを使用した。粘着性低下処理方法としては、熱処理を用いた。60℃のオーブンに試験片(幅15mm、長さ300mm)を静置し、樹脂反応率が7.3%となるまで樹脂を反応させた。室温状態で金属プレート上に静置し、その上から0.05MPaとなるように1秒間プレスした。その後、金属プレートと強化繊維プリプレグを観察すると、接着していなかった。続いて、強化繊維プリプレグを切り出し、長さ100mm、幅15mmのサンプルを得た。サンプルを曲げたところ、端部間距離を40mmにすることができた。
実施例3では、樹脂反応率を14.5%とした強化繊維プリプレグを使用した。粘着性低下処理方法としては、熱処理を用いた。60℃のオーブンに試験片(幅15mm、長さ300mm)を静置し、樹脂反応率が14.5%となるまで樹脂を反応させた。室温状態で金属プレート上に静置し、その上から0.05MPaとなるように1秒間プレスした。その後、金属プレートと強化繊維プリプレグを観察すると、接着していなかった。続いて、強化繊維プリプレグを切り出し、長さ100mm、幅15mmのサンプルを得た。サンプルを曲げたところ、端部間距離を40mmにすることができた。
比較例1では、未硬化で樹脂反応率が0%である強化繊維プリプレグを使用した。室温状態で金属プレート上に静置し、その上から0.05MPaとなるように1秒間プレスした。その後、金属プレートと強化繊維プリプレグを観察すると、接着していた。続いて、強化繊維プリプレグを切り出し、長さ100mm、幅15mmのサンプルを得た。サンプルを曲げたところ、端部間距離を40mmにすることはできた。
比較例2では、樹脂反応率を28.2%とした強化繊維プリプレグを使用した。粘着性低下処理方法としては、熱処理を用いた。60℃のオーブンに試験片(幅15mm、長さ300mm)を静置し、樹脂反応率が28.2%となるまで樹脂を反応させた。室温状態で金属プレートに静置し、その上から0.05MPaとなるように1秒間プレスした。その後、金属プレートと強化繊維プリプレグを観察すると、接着していなかった。 続いて、強化繊維プリプレグを切り出し、長さ100mm、幅15mmのサンプルを得た。サンプルを曲げたところ、端部間距離を40mmにすることができなかった。
2 低粘着強化繊維プリプレグ
21 低粘着部
22 通常部
3 端部形状変化強化繊維プリプレグ
31 端部
32 通常部
33 端部の幅
34 端部形状変化強化繊維プリプレグの幅
4 スリッター
5 低粘着強化繊維プリプレグの巻取体
Claims (12)
- 熱硬化性樹脂をマトリクスとする強化繊維プリプレグであって、前記強化繊維プリプレグの一部が、粘着性低下処理された低粘着領域である強化繊維プリプレグ。
- 前記低粘着領域の樹脂反応率が0.1%~20%である請求項1に記載の強化繊維プリプレグ。
- 前記粘着性低下処理が、加熱処理、プラズマ照射処理、およびUV照射処理のうちの少なくとも1つの処理である請求項1または2に記載の強化繊維プリプレグ。
- 前記強化繊維プリプレグの表面または表面の周縁部が前記低粘着領域である請求項1~3のいずれかに記載の強化繊維プリプレグ。
- 前記強化繊維プリプレグの端面が前記低粘着領域である請求項1~4のいずれかに記載の強化繊維プリプレグ。
- 請求項1~5のいずれかに記載の強化繊維プリプレグに設けられた前記低粘着領域に沿って裁断された強化繊維プリプレグテープ。
- 熱硬化性樹脂をマトリクスに用いた強化繊維プリプレグテープであって、前記強化繊維プリプレグテープの長手方向に直交する断面における最大幅に対し、両端部からそれぞれ前記最大幅の10%まで入り込んだ領域を占める端部の断面積が、該強化繊維プリプレグテープの長手方向に直交する断面積全体の15%未満であることを特徴とする強化繊維プリプレグテープ。
- 請求項1~5のいずれかに記載の強化繊維プリプレグに設けられた前記低粘着領域に沿って裁断された請求項7に記載の強化繊維プリプレグテープ。
- 熱硬化性樹脂をマトリクスとする強化繊維プリプレグの巻取体であって、前記強化繊維プリプレグの少なくとも一部が粘着性低下処理された低粘着領域を有するとともに、先に巻き付けられた前記強化繊維プリプレグの外層上に続いて巻き付けられる前記強化繊維プリプレグが直接巻き付けられてなる強化繊維プリプレグの巻取体。
- 熱硬化性樹脂をマトリクスとする強化繊維プリプレグの少なくとも一部を、加熱処理、プラズマ照射処理、およびUV照射処理のうちの少なくとも1つから選ばれる粘着性低下処理により低粘着領域に形成することを特徴とする強化繊維プリプレグの製造方法。
- 前記強化繊維プリプレグの表面または表面の周縁部に前記低粘着領域を形成する請求項10に記載の強化繊維プリプレグの製造方法。
- 請求項10または11に記載の製造方法によって得られた強化繊維プリプレグの前記低粘着領域に沿って裁断することを特徴とする強化繊維プリプレグテープの製造方法。
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US16/468,887 US20200231771A1 (en) | 2016-12-15 | 2017-12-07 | Reinforcing fiber prepreg, tape and wound body of reinforcing fiber prepreg, and methods of producing reinforcing fiber prepreg and reinforcing fiber prepreg tape |
RU2019121672A RU2019121672A (ru) | 2016-12-15 | 2017-12-07 | Препрег армирующего волокна, лента и объект с намоткой из препрега армирующего волокна и способы производства препрега армирующего волокна и ленты из препрега армирующего волокна |
JP2017567829A JP6922746B2 (ja) | 2016-12-15 | 2017-12-07 | 強化繊維プリプレグ、強化繊維プリプレグのテープおよび巻取体、ならびに強化繊維プリプレグおよび強化繊維プリプレグテープの製造方法 |
CN201780076494.3A CN110072924A (zh) | 2016-12-15 | 2017-12-07 | 增强纤维预浸料坯、增强纤维预浸料坯带体及卷绕体、以及增强纤维预浸料坯及增强纤维预浸料坯带体的制造方法 |
CA3046427A CA3046427A1 (en) | 2016-12-15 | 2017-12-07 | Reinforcing fiber prepreg, tape and wound body of reinforcing fiber prepreg, and methods for producing reinforcing fiber prepreg and reinforcing fiber prepreg tape |
BR112019010975A BR112019010975A2 (pt) | 2016-12-15 | 2017-12-07 | pré-impregnado reforçado com fibra, fita e corpo bobinado de pré-impregnado reforçado com fibra e método para produção de pré-impregnado reforçado com fibra e fita de pré-impregnado reforçado com fibra |
EP17881785.4A EP3556800A4 (en) | 2016-12-15 | 2017-12-07 | FIBER REINFORCED PREPREGNE, TAPE AND WOUND BODY OF FIBER REINFORCED PREPREGNE, AND PROCESS FOR THE PRODUCTION OF FIBER REINFORCED PREPREGNE AND TAPE OF FIBER REINFORCED PREPREGNATE |
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