JP2016112779A - Continuous fiber-reinforced resin member and method for producing continuous fiber-reinforced resin member - Google Patents

Continuous fiber-reinforced resin member and method for producing continuous fiber-reinforced resin member Download PDF

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JP2016112779A
JP2016112779A JP2014253269A JP2014253269A JP2016112779A JP 2016112779 A JP2016112779 A JP 2016112779A JP 2014253269 A JP2014253269 A JP 2014253269A JP 2014253269 A JP2014253269 A JP 2014253269A JP 2016112779 A JP2016112779 A JP 2016112779A
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continuous fiber
polyimide
polyamide
reinforced resin
resin member
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紀行 馬場
Noriyuki Baba
紀行 馬場
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JTEKT Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a continuous fiber-reinforced resin member which can achieve both improvement of environmental resistance and reduction in cost and is also excellent in releasability; and to provide a method for producing the same.SOLUTION: A continuous fiber-reinforced resin member 1 is produced by arranging a plurality of polyamide sheets 3 which are alternately laminated and a continuous fiber sheet 4 between a pair of polyimide sheets 2 to form a sheet-like laminate 5, and hot-pressing the laminate 5 at such a temperature that the polyamide sheet 3 flows and the polyimide sheet 2 does not flow.SELECTED DRAWING: Figure 2

Description

本発明は、連続繊維強化樹脂部材およびその製造方法に関する。   The present invention relates to a continuous fiber reinforced resin member and a method for producing the same.

近年、炭素繊維強化樹脂（ＣＦＲＰ：Carbon Fiber Reinforced Plastic）等の、連続繊維によって強化された樹脂材料の自動車部品等への適用が検討されている。当該樹脂製品としては、たとえば、炭素繊維強化樹脂をプレス成形によって成形したものが知られている。
繊維強化樹脂をプレス成形する方法として、特許文献１は、ポリアミド６樹脂を含浸した炭素繊維シートを積層し、ポリアミド６樹脂の可塑化温度以上に加熱し、プレス成形する方法を開示している。 In recent years, application of resin materials reinforced with continuous fibers such as carbon fiber reinforced resin (CFRP) to automobile parts has been studied. As the resin product, for example, a carbon fiber reinforced resin formed by press molding is known.
As a method for press-molding a fiber reinforced resin, Patent Document 1 discloses a method in which a carbon fiber sheet impregnated with a polyamide 6 resin is laminated, heated to a temperature equal to or higher than the plasticizing temperature of the polyamide 6 resin, and press-molded.

また、特許文献２は、主としてケイ素、チタン、炭素および酸素からなり、エポキシ樹脂を含浸した無機繊維（Ｉ）のプリプレグシートと、エポキシ樹脂を含浸した炭素繊維のプリプレグシートとを交互に積層した後、ホットプレスする方法を開示している。   Further, Patent Document 2 is composed of inorganic fiber (I) prepreg sheets mainly made of silicon, titanium, carbon, and oxygen, impregnated with epoxy resin, and carbon fiber prepreg sheets impregnated with epoxy resin, alternately laminated. Discloses a method of hot pressing.

特開２０１１−１９４８５２号公報JP 2011-194852 A 特開昭６２−７７３７号公報JP-A-62-2737

上記のようなプレス成形品は、たとえば、自動車部品として使用されるときには、エンジンまわりの厳しい環境に晒されることがある。そのため、プレス成形品には優れた耐環境性（耐熱性、耐薬品性等）が要求される一方、耐環境性の向上に伴うコストの増加を抑えなければならない。この点、ポリイミドは耐熱性および耐薬品性に優れるので耐環境性の要求を満足するが、コスト面での採算が合わない。たとえば、単位量当たりの材料費が、ポリアミドの約１０倍以上にもなる。   When such a press-formed product is used as, for example, an automobile part, it may be exposed to a severe environment around the engine. For this reason, the press-molded product is required to have excellent environmental resistance (heat resistance, chemical resistance, etc.), but the increase in cost due to the improvement in environmental resistance must be suppressed. In this respect, polyimide is excellent in heat resistance and chemical resistance and satisfies the requirements for environmental resistance, but it is not cost-effective. For example, the material cost per unit amount is about 10 times or more that of polyamide.

一方、ポリアミドはコストの増加を抑えることはできるが、ポリプロピレン等の汎用樹脂に比べれば融点が高く、また金属との接着性が高い。そのため、ポリアミドを使用した場合、成形品を金型から外すときに離型不良が起こりやすい。離型剤を使用してもよいが、ポリアミドをプレス成形する際にはプレス温度が高くなるため、一般的に使用されるシリコーン系離型剤では耐熱性が不足する。   On the other hand, polyamide can suppress an increase in cost, but has a higher melting point and higher adhesion to metal than general-purpose resins such as polypropylene. Therefore, when polyamide is used, a mold release failure is likely to occur when the molded product is removed from the mold. Although a mold release agent may be used, when a polyamide is press-molded, a press temperature becomes high, and thus a silicone-based mold release agent generally used is insufficient in heat resistance.

そこで、本発明の目的は、耐環境性の向上とコストの低減を両立でき、さらに離型性にも優れる連続繊維強化樹脂部材およびその製造方法を提供することである。   Therefore, an object of the present invention is to provide a continuous fiber reinforced resin member that can achieve both improvement in environmental resistance and cost reduction, and is excellent in releasability, and a method for producing the same.

請求項１に記載の発明は、一方面（１１）および他方面（１２）をそれぞれ形成するポリイミド層（１３）と、前記ポリイミド層の間に配置された連続繊維からなる複数の補強層（１４）と、前記複数の補強層に含浸し、少なくとも前記ポリイミド層に接するように配置されたポリアミド層（１５）とを含む、連続繊維強化樹脂部材（１）である。
請求項２に記載の発明は、一方面から他方面に向かって順に積層されたポリイミド層、ポリアミド層およびポリイミド層と、前記ポリアミド層に埋め込まれた連続繊維からなる複数の補強層とを含む、連続繊維強化樹脂部材である。 The invention according to claim 1 is a polyimide layer (13) that respectively forms one surface (11) and the other surface (12), and a plurality of reinforcing layers (14) composed of continuous fibers disposed between the polyimide layers. And a polyamide layer (15) disposed so as to be in contact with at least the polyimide layer and impregnated into the plurality of reinforcing layers.
The invention according to claim 2 includes a polyimide layer, a polyamide layer and a polyimide layer laminated in order from one surface to the other surface, and a plurality of reinforcing layers made of continuous fibers embedded in the polyamide layer. It is a continuous fiber reinforced resin member.

請求項３に記載の発明は、一方面から他方面に向かって順に積層されたポリイミド層、ポリアミド層およびポリイミド層と、前記ポリアミド層に埋め込まれた連続繊維とを含む、連続繊維強化樹脂部材である。
請求項４に記載の発明は、前記連続繊維が、炭素繊維を含む、請求項１〜３のいずれか一項に記載の連続繊維強化樹脂部材である。 The invention according to claim 3 is a continuous fiber reinforced resin member comprising a polyimide layer, a polyamide layer and a polyimide layer laminated in order from one surface to the other surface, and continuous fibers embedded in the polyamide layer. is there.
Invention of Claim 4 is a continuous fiber reinforced resin member as described in any one of Claims 1-3 in which the said continuous fiber contains carbon fiber.

請求項５に記載の発明は、一対のポリイミドシート（２）の間に、交互に重ねた複数枚のポリアミドシート（３）および連続繊維シート（４）を配置することによってシートの積層体（５）を形成する工程と、前記ポリアミドシートが流動し、かつ前記ポリイミドシートが流動しない温度で、前記積層体を温間プレスする工程とを含む、連続繊維強化樹脂部材の製造方法である。   The invention according to claim 5 is a laminate of sheets (5) by disposing a plurality of alternately laminated polyamide sheets (3) and continuous fiber sheets (4) between a pair of polyimide sheets (2). ) And a step of warm-pressing the laminate at a temperature at which the polyamide sheet flows and the polyimide sheet does not flow.

請求項６に記載の発明は、前記積層体を形成する工程は、前記一対のポリイミドシートのそれぞれに前記ポリアミドシートを接するように配置する工程を含む、請求項５に記載の連続繊維強化樹脂部材の製造方法である。
請求項７に記載の発明は、前記連続繊維シートが、炭素繊維シートを含む、請求項５または６に記載の連続繊維強化樹脂部材の製造方法である。 The invention according to claim 6 is the continuous fiber reinforced resin member according to claim 5, wherein the step of forming the laminate includes a step of placing the polyamide sheet in contact with each of the pair of polyimide sheets. It is a manufacturing method.
Invention of Claim 7 is a manufacturing method of the continuous fiber reinforced resin member of Claim 5 or 6 in which the said continuous fiber sheet contains a carbon fiber sheet.

なお、上記において、括弧内の数字等は、後述する実施形態における対応構成要素の参照符号を表すものであるが、これらの参照符号によって特許請求の範囲を限定する趣旨ではない。   In addition, in the above, the numbers in parentheses represent reference numerals of corresponding components in the embodiments described later, but the scope of the claims is not limited by these reference numerals.

請求項１〜３に記載の発明によれば、連続繊維強化樹脂部材の最表面がポリイミドで構成されるため、最表面に対して優れた耐環境性（耐熱性、耐薬品性等）を付与することができる。熱や薬品による劣化の起点となる最表面が当該優れた特性を有することから、連続繊維強化樹脂部材の内部に向かって劣化が進行することを抑制することもできる。一方、ポリイミドは連続繊維強化樹脂部材の樹脂部分全体を構成するものではなく、最表面に選択的に使用され、連続繊維に含浸するマトリクス樹脂としてはポリアミドが使用されている。ポリアミドはポリイミドに比べて安価であるため、耐環境性の向上に伴うコストの増加を抑制することができる。さらに、ポリイミドおよびポリアミドは、いずれもアミド結合を有するため、ポリイミドのアミド結合とポリアミドのアミド結合との間に、水素結合に基づく強い分子間力を発現させることができる。その結果、ポリイミド層とポリアミド層とを強く結合できるので、優れた耐衝撃性を実現することもできる。   According to invention of Claims 1-3, since the outermost surface of a continuous fiber reinforced resin member is comprised with a polyimide, the environmental resistance (heat resistance, chemical resistance, etc.) excellent with respect to the outermost surface is provided. can do. Since the outermost surface that is the starting point of deterioration due to heat and chemicals has the excellent characteristics, it is possible to suppress the deterioration from progressing toward the inside of the continuous fiber reinforced resin member. On the other hand, polyimide does not constitute the entire resin portion of the continuous fiber reinforced resin member, but is selectively used on the outermost surface, and polyamide is used as the matrix resin impregnated into the continuous fibers. Since polyamide is less expensive than polyimide, it is possible to suppress an increase in cost associated with improved environmental resistance. Furthermore, since both polyimide and polyamide have an amide bond, a strong intermolecular force based on a hydrogen bond can be developed between the amide bond of polyimide and the amide bond of polyamide. As a result, since the polyimide layer and the polyamide layer can be strongly bonded, excellent impact resistance can also be realized.

請求項４に記載の発明によれば、連続繊維が炭素繊維であるため、連続繊維強化樹脂部材の耐衝撃性を一層向上させることができる。
請求項５に記載の発明によれば、温間プレスの温度条件が、ポリアミドシートが流動し、かつポリイミドシートが流動しない温度であるため、当該温間プレスによってポリイミドシートの流動性が高くなることを抑制することができる。つまり、積層体の最表面を形成する一対のシートが流動し難いので、プレス金型からの離型性を高めることができる。 According to the fourth aspect of the present invention, since the continuous fiber is a carbon fiber, the impact resistance of the continuous fiber reinforced resin member can be further improved.
According to the invention described in claim 5, since the temperature condition of the warm press is a temperature at which the polyamide sheet flows and the polyimide sheet does not flow, the fluidity of the polyimide sheet is increased by the warm press. Can be suppressed. That is, since the pair of sheets forming the outermost surface of the laminate is difficult to flow, the releasability from the press mold can be improved.

そして、請求項５に記載の発明によって得られる連続繊維強化樹脂部材によれば、請求項１〜３に記載の発明の効果で述べたように、最表面に対して優れた耐環境性（耐熱性、耐薬品性等）を付与することができ、連続繊維強化樹脂部材の内部に向かって劣化が進行することを抑制することができる。また、耐環境性の向上に伴うコストの増加を抑制できると共に、ポリイミドのアミド結合とポリアミドのアミド結合との間の分子間力によってポリイミド層とポリアミド層とを強く結合できるので、優れた耐衝撃性を実現することもできる。   And according to the continuous fiber reinforced resin member obtained by invention of Claim 5, as stated by the effect of the invention of Claims 1-3, it was excellent in environmental resistance (heat resistance) with respect to the outermost surface. Property, chemical resistance, etc.) can be imparted, and the progress of deterioration toward the inside of the continuous fiber reinforced resin member can be suppressed. In addition, it is possible to suppress the increase in cost due to the improvement in environmental resistance, and the polyimide layer and the polyamide layer can be strongly bonded by the intermolecular force between the polyimide amide bond and the polyamide amide bond. Can also be realized.

請求項６に記載の発明によれば、ポリイミドシートをポリアミドシートに接触させた状態で温間プレスすることによって、ポリイミドとポリアミドとの結合力を向上させることができる。ポリイミドシートは、流動させて連続繊維シートに含浸させる必要がない一方、ポリアミドシートとの間に分子間力を発現させる必要があるためである。
請求項７に記載の発明によれば、連続繊維シートが炭素繊維シートであるため、耐衝撃性に一層優れた連続繊維強化樹脂部材を製造することができる。 According to invention of Claim 6, the bonding force of a polyimide and polyamide can be improved by carrying out warm press in the state which made the polyimide sheet contact the polyamide sheet. This is because the polyimide sheet does not need to be flowed and impregnated into the continuous fiber sheet, but it is necessary to develop an intermolecular force with the polyamide sheet.
According to the seventh aspect of the present invention, since the continuous fiber sheet is a carbon fiber sheet, a continuous fiber reinforced resin member having further excellent impact resistance can be produced.

図１は、ポリイミドシート、ポリアミドシートおよび連続繊維シートの積層に関連する工程を説明するための図である。Drawing 1 is a figure for explaining the process relevant to lamination of a polyimide sheet, a polyamide sheet, and a continuous fiber sheet. 図２Ａ〜図２Ｂは、本発明の一実施形態に係る連続繊維強化樹脂部材の製造方法を説明するための模式図である。Drawing 2A-Drawing 2B are mimetic diagrams for explaining the manufacturing method of the continuous fiber reinforced resin member concerning one embodiment of the present invention. 図３は、図２Ａ〜図２Ｂの工程によって成形された連続繊維強化樹脂部材の模式的な斜視図である。FIG. 3 is a schematic perspective view of a continuous fiber reinforced resin member formed by the steps of FIGS. 2A to 2B. 図４は、ポリイミドおよびポリアミドの化学式の一例を示す図である。FIG. 4 is a diagram showing an example of chemical formulas of polyimide and polyamide.

以下では、本発明の実施形態を、添付図面を参照して詳細に説明する。
図１は、ポリイミドシート２、ポリアミドシート３および連続繊維シート４の積層に関連する工程を説明するための図である。図２Ａ〜図２Ｂは、本発明の一実施形態に係る連続繊維強化樹脂部材１の製造方法を説明するための模式図である。図３は、図２Ａ〜図２Ｂの工程によって成形された連続繊維強化樹脂部材１の模式的な斜視図である。図４は、ポリイミドおよびポリアミドの化学式の一例を示す図である。 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a diagram for explaining processes related to the lamination of the polyimide sheet 2, the polyamide sheet 3, and the continuous fiber sheet 4. Drawing 2A-Drawing 2B are mimetic diagrams for explaining the manufacturing method of continuous fiber reinforced resin member 1 concerning one embodiment of the present invention. FIG. 3 is a schematic perspective view of the continuous fiber reinforced resin member 1 formed by the steps of FIGS. 2A to 2B. FIG. 4 is a diagram showing an example of chemical formulas of polyimide and polyamide.

連続繊維強化樹脂部材１を製造するには、まず、図１および図２Ａに示すように、プレス成形機（図示せず）の金型６に、ポリイミドシート２、ポリアミドシート３および連続繊維シート４を用いて積層体５が設置される。具体的には、一対のポリイミドシート２の間に、複数枚のポリアミドシート３および連続繊維シート４が交互に積層される。ポリアミドシート３および連続繊維シート４の積層枚数は、目的とする連続繊維強化樹脂部材１に応じて異なる。   In order to manufacture the continuous fiber reinforced resin member 1, first, as shown in FIGS. 1 and 2A, a polyimide sheet 2, a polyamide sheet 3, and a continuous fiber sheet 4 are placed on a mold 6 of a press molding machine (not shown). The laminated body 5 is installed using. Specifically, a plurality of polyamide sheets 3 and continuous fiber sheets 4 are alternately laminated between a pair of polyimide sheets 2. The number of laminated polyamide sheets 3 and continuous fiber sheets 4 varies depending on the intended continuous fiber reinforced resin member 1.

使用されるポリイミドシート２の材料としては、たとえば、ポリイミド、熱可塑性ポリイミド、ポリアミドイミド、ポリエーテルイミド等のポリイミド系樹脂が挙げられる。また、ポリアミドシート３の材料としては、ＰＡ６、ＰＡ６６、ＰＡ１２、ＰＡ６１２、ＰＡ６１０、ＰＡ１１等の脂肪族ポリアミド、ＰＡ６Ｔ、ＰＡ９Ｔ、ＰＰＡ等の芳香族ポリアミド等のポリアミド系樹脂が挙げられる。   Examples of the material of the polyimide sheet 2 used include polyimide resins such as polyimide, thermoplastic polyimide, polyamideimide, and polyetherimide. Examples of the material of the polyamide sheet 3 include polyamide resins such as aliphatic polyamides such as PA6, PA66, PA12, PA612, PA610, and PA11, and aromatic polyamides such as PA6T, PA9T, and PPA.

連続繊維シート４を構成する連続繊維としては、たとえば、炭素繊維、ガラス繊維、アラミド繊維等が挙げられる。また、連続繊維の形態としては、連続繊維を経糸（たていと）と緯糸（よこいと）に交互に配向（織る）させたクロス材であってもよいし、連続繊維を一方向に配向させたＵＤ（Uni Direction）材であってもよい。また、クロス材の織り方としては、平織、綾織、朱子織、からみ織、模紗織、斜紋織等、一般的に知られている織り方が挙げられるが、樹脂を含浸できるものであればこれらに限られない。これらのうち、好ましくは、炭素繊維が使用され、より好ましくは、炭素繊維のＵＤ材（つまり、炭素繊維ＵＤテープ）が使用される。なお、図１では、連続繊維シート４として、ＵＤテープを使用した例を示している。ＵＤ材を使用する場合、図１に示すように、全ての連続繊維シート４の繊維の配向方向が特定の方向とならないように、配向方向が様々な方向となるようにしてもよい。   Examples of the continuous fibers constituting the continuous fiber sheet 4 include carbon fibers, glass fibers, and aramid fibers. Further, the form of the continuous fiber may be a cloth material in which the continuous fiber is alternately oriented (woven) into warp and weft, and the continuous fiber is oriented in one direction. A UD (Uni Direction) material may also be used. In addition, examples of the weaving method of the cloth material include commonly known weaving methods such as plain weave, twill weave, satin weave, leopard weave, imitation weave, and oblique weave. Not limited to. Among these, carbon fiber is preferably used, and more preferably, a UD material of carbon fiber (that is, a carbon fiber UD tape) is used. FIG. 1 shows an example in which a UD tape is used as the continuous fiber sheet 4. When using UD material, as shown in FIG. 1, you may make it the orientation direction become various directions so that the orientation direction of the fiber of all the continuous fiber sheets 4 may not become a specific direction.

また、積層に当たり、ポリアミドシート３は、一対のポリイミドシート２のそれぞれに接する位置に配置されることが好ましい。つまり、ポリイミドシート２の次にはポリアミドシート３が配置され、これらのシート２，３の間に連続繊維シート４が介在されないことが好ましい。
金型６は、上型７および下型８を含む。なお、図２Ａ〜図２Ｂに示した金型６は、本発明の説明をするために模式的に表したものに過ぎず、本発明の実施にあたって使用する金型としては、目的とする連続繊維強化樹脂部材１の形状に応じたものを採用すればよい。 Moreover, it is preferable to arrange | position the polyamide sheet 3 in the position which contact | connects each of a pair of polyimide sheets 2 in lamination | stacking. That is, it is preferable that the polyamide sheet 3 is arranged next to the polyimide sheet 2 and the continuous fiber sheet 4 is not interposed between these sheets 2 and 3.
The mold 6 includes an upper mold 7 and a lower mold 8. Note that the mold 6 shown in FIGS. 2A to 2B is merely a schematic representation for explaining the present invention, and the target continuous fiber is used as a mold used in the practice of the present invention. What is necessary is just to employ | adopt the thing according to the shape of the reinforced resin member 1. FIG.

上型７は、連続繊維強化樹脂部材１の内面を成形するためのものである。上型７の外面９（成形面）は、連続繊維強化樹脂部材１の内面に合わせて湾曲した凸面となっている。
下型８は、連続繊維強化樹脂部材１の外面を成形するためのものである。下型８の内面１０（成形面）は、連続繊維強化樹脂部材１の外面に合わせて湾曲した凹面となっている。 The upper mold 7 is for molding the inner surface of the continuous fiber reinforced resin member 1. The outer surface 9 (molding surface) of the upper mold 7 is a convex surface curved in accordance with the inner surface of the continuous fiber reinforced resin member 1.
The lower mold 8 is for molding the outer surface of the continuous fiber reinforced resin member 1. The inner surface 10 (molding surface) of the lower mold 8 is a concave surface curved in accordance with the outer surface of the continuous fiber reinforced resin member 1.

次に、上型７および下型８によって、積層体５が上下両側から温間プレスされる。このときの金型６の温度Ｔは、ポリイミド系樹脂が流動せず、かつ、ポリアミド系樹脂を流動状態にできる温度に制御される。この実施形態では、金型６の温度Ｔは、ポリイミド系樹脂およびポリアミド系樹脂の融点を基準にして、ポリイミド系樹脂の融点＞Ｔ≧ポリアミド系樹脂の融点を満たすように設定される。たとえば、ポリイミド系樹脂としてポリイミドが使用され、ポリアミド系樹脂としてＰＡ６６が使用される場合、温度Ｔは、２６５℃〜３５０℃である。このプレスによって、ポリアミドシート３が流動状態となって連続繊維シート４に含浸すると共に、ポリアミドシート３とポリイミドシート２とが一体化して、金型６に応じた形状の連続繊維強化樹脂部材１が成形される。この後、連続繊維強化樹脂部材１が金型６から取り外される。   Next, the laminate 5 is warm-pressed from both the upper and lower sides by the upper die 7 and the lower die 8. The temperature T of the mold 6 at this time is controlled to a temperature at which the polyimide resin does not flow and the polyamide resin can be in a fluid state. In this embodiment, the temperature T of the mold 6 is set so as to satisfy the melting point of the polyimide resin> T ≧ the melting point of the polyamide resin, based on the melting points of the polyimide resin and the polyamide resin. For example, when polyimide is used as the polyimide resin and PA66 is used as the polyamide resin, the temperature T is 265 ° C. to 350 ° C. By this pressing, the polyamide sheet 3 becomes fluidized and impregnates the continuous fiber sheet 4, and the polyamide sheet 3 and the polyimide sheet 2 are integrated to form a continuous fiber reinforced resin member 1 having a shape corresponding to the mold 6. Molded. Thereafter, the continuous fiber reinforced resin member 1 is removed from the mold 6.

図３に示すように、得られた連続繊維強化樹脂部材１は、下型８の内面１０に応じて凸湾曲した第１面１１と、上型７の外面９に応じて凹湾曲した第２面１２とを有している。第１面１１および第２面１２は、連続繊維強化樹脂部材１の最表面をなしており、いずれもポリイミドシート２からなるポリイミド層１３によって形成されている。このポリイミド層１３の間には、連続繊維シート４からなる補強層１４が複数枚配置されている。補強層１４には、ポリアミドシート３に由来するポリアミド層１５が、ポリイミド層１３に接する形で含浸している。ポリアミド層１５は、図３に示すように、複数層に分かれた態様で設けられていてもよいし、ポリイミド層１３の間に、複数のポリアミドシート３が流動によって一体化して形成された単層として設けられていてもよい。   As shown in FIG. 3, the obtained continuous fiber reinforced resin member 1 includes a first surface 11 that is convexly curved according to the inner surface 10 of the lower mold 8 and a second surface that is concavely curved according to the outer surface 9 of the upper mold 7. Surface 12. The first surface 11 and the second surface 12 form the outermost surface of the continuous fiber reinforced resin member 1, and both are formed by the polyimide layer 13 made of the polyimide sheet 2. A plurality of reinforcing layers 14 made of the continuous fiber sheet 4 are arranged between the polyimide layers 13. The reinforcing layer 14 is impregnated with a polyamide layer 15 derived from the polyamide sheet 3 in contact with the polyimide layer 13. As shown in FIG. 3, the polyamide layer 15 may be provided in a manner divided into a plurality of layers, or a single layer formed by integrating a plurality of polyamide sheets 3 by flow between the polyimide layers 13. It may be provided as.

また、補強層１４は、ポリイミド層１３の間に複数層に分かれた態様で設けられていてもよいし、層を構成せず、連続繊維シート４の各繊維が、ポリアミドシート３が流動圧によってランダムに広がってばらばらに分布した態様で設けられていてもよい。
以上の方法によれば、図２Ｂに示す温間プレスの温度条件が、ポリイミド系樹脂およびポリアミド系樹脂の融点を基準にして、ポリイミド系樹脂の融点＞Ｔ≧ポリアミド系樹脂の融点を満たすように設定されるため、当該温間プレスによってポリイミドシート２の流動性が高くなることを抑制することができる。つまり、積層体５の最表面を形成する一対のポリイミドシート２が流動し難いので、金型６からの離型性を高めることができる。 In addition, the reinforcing layer 14 may be provided in a form divided into a plurality of layers between the polyimide layers 13, or each layer of the continuous fiber sheet 4 does not constitute a layer, and the polyamide sheet 3 is subjected to fluid pressure. It may be provided in a randomly distributed manner.
According to the above method, the temperature condition of the warm press shown in FIG. 2B satisfies the melting point of the polyimide resin> T ≧ the melting point of the polyamide resin on the basis of the melting points of the polyimide resin and the polyamide resin. Since it sets, it can suppress that the fluidity | liquidity of the polyimide sheet 2 becomes high by the said warm press. That is, since the pair of polyimide sheets 2 that form the outermost surface of the laminate 5 are difficult to flow, the releasability from the mold 6 can be improved.

そして、得られた連続繊維強化樹脂部材１によれば、連続繊維強化樹脂部材１の最表面である第１面１１および第２面１２がポリイミド層１３で構成されるため、第１面１１および第２面１２に対して優れた耐環境性（耐熱性、耐薬品性等）を付与することができる。熱や薬品による劣化の起点となる第１面１１および第２面１２が当該優れた特性を有することから、連続繊維強化樹脂部材１の内部に向かって劣化が進行することを抑制することもできる。一方、ポリイミド層１３は連続繊維強化樹脂部材１の樹脂部分全体を構成するものではなく、最表面に選択的に使用され、連続繊維（補強層１４）に含浸するマトリクス樹脂としてはポリアミド層１５が使用されている。ポリアミド系樹脂はポリイミド系樹脂に比べて安価であるため、耐環境性の向上に伴うコストの増加を抑制することができる。さらに、ポリイミド系樹脂およびポリアミド系樹脂は、図４に示すように、いずれもアミド結合を有するため、ポリイミド系樹脂のアミド結合とポリアミド系樹脂のアミド結合との間に、水素結合に基づく強い分子間力を発現させることができる。その結果、ポリイミド層１３とポリアミド層１５とを強く結合できるので、優れた耐衝撃性を実現することもできる。なお、図４では、ポリイミド系樹脂の一例として、ポリイミド（カプトン：登録商標）を示し、ポリアミド系樹脂の一例として、ポリアミド（ＰＡ）６６を示している。   And according to the obtained continuous fiber reinforced resin member 1, since the 1st surface 11 and the 2nd surface 12 which are the outermost surfaces of the continuous fiber reinforced resin member 1 are comprised by the polyimide layer 13, 1st surface 11 and Excellent environmental resistance (heat resistance, chemical resistance, etc.) can be imparted to the second surface 12. Since the 1st surface 11 and the 2nd surface 12 used as the starting point of deterioration by a heat | fever or a chemical | medical agent have the said outstanding characteristic, it can also suppress that a deterioration advances toward the inside of the continuous fiber reinforced resin member 1. FIG. . On the other hand, the polyimide layer 13 does not constitute the entire resin portion of the continuous fiber reinforced resin member 1, but is selectively used on the outermost surface, and the polyamide layer 15 is used as a matrix resin impregnating the continuous fiber (reinforcing layer 14). It is used. Since the polyamide-based resin is less expensive than the polyimide-based resin, it is possible to suppress an increase in cost due to improvement in environmental resistance. Furthermore, as shown in FIG. 4, since the polyimide resin and the polyamide resin both have an amide bond, a strong molecule based on a hydrogen bond is present between the amide bond of the polyimide resin and the amide bond of the polyamide resin. Interstitial force can be expressed. As a result, since the polyimide layer 13 and the polyamide layer 15 can be strongly bonded, excellent impact resistance can also be realized. In FIG. 4, polyimide (Kapton: registered trademark) is shown as an example of the polyimide resin, and polyamide (PA) 66 is shown as an example of the polyamide resin.

本発明は、上記の実施形態に限定されることなく、他の実施形態で実施することもできる。
前述の実施形態では、金型６の設定温度の基準として、ポリイミド系樹脂およびポリアミド系樹脂のそれぞれの融点を利用したが、使用するポリイミド系樹脂およびポリアミド系樹脂の種類によってはガラス転移点を基準にしてもよい。 The present invention is not limited to the above-described embodiment, and can be implemented in other embodiments.
In the above-described embodiment, the melting point of each of the polyimide resin and the polyamide resin is used as a reference for the set temperature of the mold 6. However, depending on the type of the polyimide resin and the polyamide resin used, the glass transition point is used as a reference. It may be.

本発明の連続繊維強化樹脂部材は、車両部品の他、たとえば、鉄道車両、船舶、航空機、ユニットバス、浄化槽、プリント基板、遊具、スキー板等、各種分野で使用される部品や本体に使用することができる。
その他、特許請求の範囲に記載された事項の範囲で種々の設計変更を施すことが可能である。 The continuous fiber reinforced resin member of the present invention is used for parts and main bodies used in various fields such as railcars, ships, aircraft, unit baths, septic tanks, printed circuit boards, playground equipment, skis, etc. in addition to vehicle parts. be able to.
In addition, various design changes can be made within the scope of matters described in the claims.

１…連続繊維強化樹脂部材、２…ポリイミドシート、３…ポリアミドシート、４…連続繊維シート、５…積層体、１１…第１面、１２…第２面、１３…ポリイミド層、１４…補強層、１５…ポリアミド層   DESCRIPTION OF SYMBOLS 1 ... Continuous fiber reinforced resin member, 2 ... Polyimide sheet, 3 ... Polyamide sheet, 4 ... Continuous fiber sheet, 5 ... Laminated body, 11 ... 1st surface, 12 ... 2nd surface, 13 ... Polyimide layer, 14 ... Reinforcement layer 15 ... Polyamide layer

Claims (7)

一方面および他方面をそれぞれ形成するポリイミド層と、
前記ポリイミド層の間に配置された連続繊維からなる複数の補強層と、
前記複数の補強層に含浸し、少なくとも前記ポリイミド層に接するように配置されたポリアミド層とを含む、連続繊維強化樹脂部材。 A polyimide layer forming one side and the other side,
A plurality of reinforcing layers made of continuous fibers disposed between the polyimide layers;
A continuous fiber reinforced resin member comprising: a polyamide layer impregnated in the plurality of reinforcing layers and disposed at least in contact with the polyimide layer. 一方面から他方面に向かって順に積層されたポリイミド層、ポリアミド層およびポリイミド層と、
前記ポリアミド層に埋め込まれた連続繊維からなる複数の補強層とを含む、連続繊維強化樹脂部材。 A polyimide layer, a polyamide layer and a polyimide layer laminated in order from one side to the other side;
A continuous fiber reinforced resin member comprising a plurality of reinforcing layers made of continuous fibers embedded in the polyamide layer. 一方面から他方面に向かって順に積層されたポリイミド層、ポリアミド層およびポリイミド層と、
前記ポリアミド層に埋め込まれた連続繊維とを含む、連続繊維強化樹脂部材。 A polyimide layer, a polyamide layer and a polyimide layer laminated in order from one side to the other side;
A continuous fiber reinforced resin member comprising continuous fibers embedded in the polyamide layer. 前記連続繊維が、炭素繊維を含む、請求項１〜３のいずれか一項に記載の連続繊維強化樹脂部材。   The continuous fiber reinforced resin member according to any one of claims 1 to 3, wherein the continuous fiber includes carbon fiber. 一対のポリイミドシートの間に、交互に重ねた複数枚のポリアミドシートおよび連続繊維シートを配置することによってシートの積層体を形成する工程と、
前記ポリアミドシートが流動し、かつ前記ポリイミドシートが流動しない温度で、前記積層体を温間プレスする工程とを含む、連続繊維強化樹脂部材の製造方法。 Forming a laminate of sheets by arranging a plurality of alternately laminated polyamide sheets and continuous fiber sheets between a pair of polyimide sheets; and
And a step of warm-pressing the laminate at a temperature at which the polyamide sheet flows and the polyimide sheet does not flow. 前記積層体を形成する工程は、前記一対のポリイミドシートのそれぞれに前記ポリアミドシートを接するように配置する工程を含む、請求項５に記載の連続繊維強化樹脂部材の製造方法。   The method for producing a continuous fiber reinforced resin member according to claim 5, wherein the step of forming the laminate includes a step of placing the polyamide sheet in contact with each of the pair of polyimide sheets. 前記連続繊維シートが、炭素繊維シートを含む、請求項５または６に記載の連続繊維強化樹脂部材の製造方法。   The manufacturing method of the continuous fiber reinforced resin member of Claim 5 or 6 in which the said continuous fiber sheet contains a carbon fiber sheet.
JP2014253269A 2014-12-15 2014-12-15 Continuous fiber-reinforced resin member and method for producing continuous fiber-reinforced resin member Pending JP2016112779A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019179663A (en) * 2018-03-30 2019-10-17 東レエンジニアリング株式会社 High frequency heating device and high frequency heating method
CN110494315A (en) * 2017-04-06 2019-11-22 八千代工业株式会社 The forming method of fuel tank and fiber-reinforced resin component

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110494315A (en) * 2017-04-06 2019-11-22 八千代工业株式会社 The forming method of fuel tank and fiber-reinforced resin component
CN110494315B (en) * 2017-04-06 2021-02-26 八千代工业株式会社 Fuel tank and method for molding fiber-reinforced resin member
JP2019179663A (en) * 2018-03-30 2019-10-17 東レエンジニアリング株式会社 High frequency heating device and high frequency heating method

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