JP2007307853A - Method for molding frp-made blow molded article - Google Patents

Method for molding frp-made blow molded article Download PDF

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JP2007307853A
JP2007307853A JP2006141343A JP2006141343A JP2007307853A JP 2007307853 A JP2007307853 A JP 2007307853A JP 2006141343 A JP2006141343 A JP 2006141343A JP 2006141343 A JP2006141343 A JP 2006141343A JP 2007307853 A JP2007307853 A JP 2007307853A
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frp
frp material
wax
mold
synthetic wax
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Kunji Ogawa
訓司 小川
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Toyota Motor Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for molding an FRP-made blow molded article discharging a core in a process for curing an FRP material, reducing more the number of processes than before, and shortening the molding time. <P>SOLUTION: The method for molding the FRP-made blow molded article has a process for preparing an in-form mold (the core) 2 with a synthetic wax, a process for sticking the FRP material 3 on the outer face of the in-form mold 2 prepared and forming a wax discharging hole 4 in the stuck FRP material 3, and a process in which the FRP material 3 and the in-form mold 2 are heated to heat-cure the FRP material 3, the synthetic wax 5 in the molten in-form mold 2 is discharged from the wax discharging hole 4, and the FRP material 3 is completely heat-cured to make the FRP-made blow molded article 1. It is possible that the core 2 can be removed in the process for curing the FRP material 3, the number of the processes can be reduced thereby in comparison with the conventional one, and the molding time can be shortened. In addition, as no dissolved liquid is mixed in the discharged synthetic wax 5, it is convenient for recycling and re-use. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、ＦＲＰ（繊維強化樹脂）製の中空成形品を成形する成形方法に関する。   The present invention relates to a molding method for molding a hollow molded product made of FRP (fiber reinforced resin).

従来、ＦＲＰを中空成形するのは難しいので、通常、ウレタンの発泡コアを内部に入れたままの成形品としている。しかし、コアを埋め込んだままであると質量が増すので、ＦＲＰ製中空成形品を比較的容易に作製できる方法が求められている。
従来、提案されているＦＲＰ製中空成形品の成形方法には、石膏でインフォーム型（中子）を作製し、成形後に石膏を溶解液を用いて溶解除去する方法（例えば、特許文献１参照）や、エアを充填したバッグを中子として用い、成形後にエアバッグを除去する方法（例えば、特許文献２、３参照）などがある。
特開２００２−３６３８１号公報 特開２００３−３１１８４５号公報 特開２００３−３１１７６５号公報 Conventionally, since it is difficult to hollow-mold FRP, it is usually a molded product with a urethane foam core inside. However, since the mass increases if the core is still embedded, there is a need for a method that can relatively easily produce a hollow molded product made of FRP.
Conventionally, as a method for forming a hollow molded article made of FRP, a method of producing an in-mold mold (core) with gypsum and dissolving and removing the gypsum using a solution after molding (see, for example, Patent Document 1) ), And a method of using a bag filled with air as a core and removing the airbag after molding (for example, see Patent Documents 2 and 3).
JP 2002-36381 A JP 2003-31845 A JP 2003-31765 A

しかし、特許文献１の方法では、ＦＲＰ材を硬化させる工程とは別に、溶解液を用いて石膏を溶かす工程が必要となり、工程数が多く、成形時間がかかるため、コスト高となり、大量生産に難がある。また、溶解液と石膏とを分離するのが困難で、石膏のリサイクル性に乏しい。
また、特許文献２や特許文献３の方法では、ＦＲＰ材を硬化させる工程とは別に、エアバッグを除去する工程が必要となり、工程数が多く、成形時間がかかるため、コスト高となり、大量生産に難がある。 However, the method of Patent Document 1 requires a step of dissolving gypsum using a solution separately from the step of curing the FRP material, which requires a large number of steps and takes a molding time, resulting in high costs and mass production. There are difficulties. In addition, it is difficult to separate the solution and gypsum, and the recyclability of gypsum is poor.
In addition, in the methods of Patent Document 2 and Patent Document 3, a process for removing the airbag is required in addition to the process for curing the FRP material, which requires a large number of processes and takes molding time, resulting in high costs and mass production. There are difficulties.

本発明の目的は、ＦＲＰ材を硬化させる工程で中子（インフォーム型）を排出することができ、それによって従来に比べて工程数を削減でき、成形サイクル時間も短縮できるＦＲＰ製中空成形品の成形方法を提供することにある。   The object of the present invention is to discharge the core (inform mold) in the process of curing the FRP material, thereby reducing the number of processes and shortening the molding cycle time compared to the prior art, and a hollow molded article made of FRP. Is to provide a molding method.

上記課題を解決する本発明の方法は、つぎのとおりである。
（１） 合成ワックスでインフォーム型を作製する工程と、
作製したインフォーム型の外面にＦＲＰ材を貼付するとともに貼付したＦＲＰ材にワックス排出孔を形成する工程と、
ＦＲＰ材とインフォーム型を加熱してＦＲＰ材を熱硬化させていき、溶融するインフォーム型の合成ワックスをワックス排出孔から排出するとともに、ＦＲＰ材を完全に熱硬化させてＦＲＰ製中空成形品とする工程と、
を有するＦＲＰ製中空成形品の成形方法。
（２） ＦＲＰ材に１３０℃〜１５０℃で熱硬化完了する樹脂を含むＣＦＲＰ材を用い、合成ワックスに１２０℃〜１３０℃の融点を有する合成ワックスを用いる（１）記載のＦＲＰ製中空成形品の成形方法。
（３） ＦＲＰ材が８０％〜９０％熱硬化する温度を融点とする合成ワックスを用いてインフォーム型を作製する（１）または（２）記載のＦＲＰ製中空成形品の成形方法。 The method of the present invention for solving the above problems is as follows.
(1) producing an in-mold mold with synthetic wax;
Attaching the FRP material to the outer surface of the produced inform mold and forming a wax discharge hole in the attached FRP material;
The FRP material and the foam mold are heated to thermally cure the FRP material, and the melted foam foam is discharged from the wax discharge hole, and the FRP material is completely heat cured to form a hollow molded product made of FRP. And a process of
A method for forming a hollow molded product of FRP having:
(2) The FRP hollow molded article according to (1), wherein a CFRP material containing a resin that is thermally cured at 130 ° C. to 150 ° C. is used as the FRP material, and a synthetic wax having a melting point of 120 ° C. to 130 ° C. is used as the synthetic wax. Molding method.
(3) The method for forming an FRP hollow molded article according to (1) or (2), wherein an in-mold mold is produced using a synthetic wax having a melting point at a temperature at which the FRP material is thermally cured by 80% to 90%.

上記（１）のＦＲＰ製中空成形品の成形方法によれば、ＦＲＰ材とインフォーム型を加熱してＦＲＰ材を熱硬化させていき、溶融するインフォーム型の合成ワックスをワックス排出孔から排出するとともに、ＦＲＰ材を完全に熱硬化させる工程を有するので、ＦＲＰ材を硬化させる工程で中子を除去させることができ、それによって従来に比べて工程数を削減でき、成形時間も短縮できる。また、排出される合成ワックスには溶解液などが混じっていないので、合成ワックスと溶解液とを分離する必要がなく、リサイクル、再利用に便利である。
上記（２）のＦＲＰ製中空成形品の成形方法によれば、ＦＲＰ材に１３０℃〜１５０℃で熱硬化完了する樹脂を含むＣＦＲＰ材を用い、合成ワックスに１２０℃〜１３０℃の融点を有する合成ワックスを用いるので、ＦＲＰ材とインフォーム型を加熱して温度を上げていく時に、ＦＲＰ材が１３０℃〜１５０℃の温度で熱硬化完了する前に合成ワックスを溶融させることができる。これによって、合成ワックスの溶融がＦＲＰ材の熱硬化と並行して行われ、ＦＲＰ材の熱硬化と合成ワックスの溶融との一方を行った後に他方を行う場合に比べて、サイクルタイムを短縮できる。
上記（３）のＦＲＰ製中空成形品の成形方法によれば、ＦＲＰ材が８０％〜９０％熱硬化する温度を融点とする合成ワックスを用いてインフォーム型を作製するので、ＦＲＰ材が熱硬化完了する前に合成ワックスを溶融させることができる。これによって、ＦＲＰ材が熱硬化と合成ワックスとの溶融が少なくとも一部並行して起こり、ＦＲＰ材が熱硬化と合成ワックスの溶融との一方が行った後に他方を行う場合に比べてサイクルタイムを短縮できる。 According to the molding method of the FRP hollow molded product of (1) above, the FRP material and the foam mold are heated to thermally cure the FRP material, and the melted foam foam is discharged from the wax discharge hole. In addition, since the FRP material has a step of completely thermosetting, the core can be removed in the step of curing the FRP material, whereby the number of steps can be reduced and the molding time can be shortened as compared with the prior art. Further, since the discharged synthetic wax does not contain a solution or the like, it is not necessary to separate the synthetic wax and the solution, which is convenient for recycling and reuse.
According to the molding method of the FRP hollow molded product of (2) above, a CFRP material containing a resin that is thermally cured at 130 ° C. to 150 ° C. is used as the FRP material, and the synthetic wax has a melting point of 120 ° C. to 130 ° C. Since the synthetic wax is used, when the FRP material and the foam mold are heated to raise the temperature, the synthetic wax can be melted before the FRP material is thermally cured at a temperature of 130 ° C. to 150 ° C. Thereby, the melting of the synthetic wax is performed in parallel with the thermal curing of the FRP material, and the cycle time can be shortened as compared with the case where the other is performed after the thermal curing of the FRP material and the melting of the synthetic wax are performed. .
According to the molding method of the FRP hollow molded product of (3) above, an FRP material is produced using a synthetic wax having a melting point of a temperature at which the FRP material is thermally cured by 80% to 90%. The synthetic wax can be melted before curing is complete. As a result, the FRP material is at least partially melted with the thermosetting and the synthetic wax in parallel, and the FRP material has a cycle time compared to the case where the heat curing and the melting of the synthetic wax are performed and then the other is performed. Can be shortened.

以下に、本発明のＦＲＰ製中空成形品の成形方法を、図１〜図３を参照して説明する。本発明のＦＲＰ製中空成形品の成形方法のＦＲＰは、カーボン繊維を含むＦＲＰであるＣＦＲＰ、またはガラス繊維を含むＦＲＰであるＧＦＲＰの何れでもよい。ＦＲＰの樹脂は熱硬化性樹脂である。中空成形品は、たとえば、自動車用ボデー部品であり、たとえば、サイドメンバー、ダッシュパネル、ピラー等の部品である。ただし、中空成形品は、自動車用ボデー構造部材に限るものではない。   Below, the shaping | molding method of the hollow molded product made from FRP of this invention is demonstrated with reference to FIGS. The FRP of the FRP hollow molded article molding method of the present invention may be either CFRP, which is FRP containing carbon fibers, or GFRP, which is FRP containing glass fibers. The FRP resin is a thermosetting resin. The hollow molded article is, for example, a body part for an automobile, and is, for example, a part such as a side member, a dash panel, or a pillar. However, the hollow molded article is not limited to the automobile body structure member.

本発明のＦＲＰ製中空成形品１の成形方法を、（イ）合成ワックスでインフォーム型（中子といってもよい）２を作製する第１の工程と、（ロ）作製したインフォーム型２の外面にＦＲＰ材３を貼付するとともに、貼付したＦＲＰ材３にワックス排出孔４を形成する第２の工程と、（ハ）ＦＲＰ材３とインフォーム型２を加熱してＦＲＰ材３を熱硬化させていき、その時に溶融するインフォーム型２の合成ワックス５をワックス排出孔４から排出するとともに、ＦＲＰ材３を完全に熱硬化させてＦＲＰ製中空成形品１とする第３の工程と、を有する。ワックス排出孔４から排出された合成ワックス５は、インフォーム型２の作製に再利用することが望ましい。   The method for forming the FRP hollow molded article 1 of the present invention includes (a) a first step of producing an in-mold mold (may be referred to as a core) 2 with a synthetic wax, and (b) a produced in-mold mold. A second step of forming the wax discharge hole 4 in the affixed FRP material 3 and (c) heating the FRP material 3 and the inform mold 2 to attach the FRP material 3 to the outer surface of the FRP material 3 A third step of heat-curing and discharging the synthetic wax 5 of the Inform mold 2 that melts at that time from the wax discharge hole 4 and completely heat-curing the FRP material 3 to obtain the FRP hollow molded product 1 And having. It is desirable that the synthetic wax 5 discharged from the wax discharge hole 4 is reused for manufacturing the foam mold 2.

合成ワックス５とは、融点が互いに異なる複数種のワックスを混合したワックスをいう。たとえば、融点が１２０℃、１２５℃、１３０℃の３種類のワックスを混合した合成ワックスといった具合である。複数種のワックスの融点のうち最も高い融点を、ＦＲＰ材３の樹脂の熱硬化完了温度以下にしておく。   The synthetic wax 5 is a wax obtained by mixing a plurality of types of waxes having different melting points. For example, a synthetic wax in which three kinds of waxes having melting points of 120 ° C., 125 ° C., and 130 ° C. are mixed. The highest melting point among the melting points of the plurality of types of wax is set to be equal to or lower than the heat curing completion temperature of the resin of the FRP material 3.

作製したインフォーム型２の外面にＦＲＰ材３を貼付する方法は、ＦＲＰシートをインフォーム型２の外面に複数層貼付すること等によって行う。ＦＲＰシートには予めワックス排出孔４が設けてあり、積層した時にワックス排出孔４が形成されるようにする。あるいは、ワックス排出孔４のないＦＲＰシートをインフォーム型２の外面に複数層積層し、積層した後にワックス排出孔４を形成する。   The method of sticking the FRP material 3 on the outer surface of the produced mold 2 is performed by pasting a plurality of layers of FRP sheets on the outer surface of the foam mold 2. The FRP sheet is provided with a wax discharge hole 4 in advance, and the wax discharge hole 4 is formed when the FRP sheet is laminated. Alternatively, a plurality of FRP sheets without the wax discharge holes 4 are laminated on the outer surface of the inform mold 2, and the wax discharge holes 4 are formed after the lamination.

ワックス排出孔４は、インフォーム型２の合成ワックス５が全量溶融した時に溶融合成ワックス５の全量がワックス排出孔４から自重で流出し得る、ＦＲＰ製中空成形品１の部位に形成されている。ワックス排出孔４は、ＦＲＰ製中空成形品１の下面に形成され、溶融したワックスがワックス排出孔４に向かって流れるような製品形状にしておく。   The wax discharge hole 4 is formed in a portion of the FRP hollow molded product 1 where the total amount of the molten synthetic wax 5 can flow out of the wax discharge hole 4 by its own weight when the total amount of the synthetic wax 5 of the foam mold 2 is melted. . The wax discharge hole 4 is formed on the lower surface of the FRP hollow molded product 1 and has a product shape in which molten wax flows toward the wax discharge hole 4.

ＦＲＰ材３に含まれる樹脂の熱硬化温度は約１００℃〜１５０℃であり、ＦＲＰ材３に含まれる樹脂の熱硬化完了温度は１３０℃〜１５０℃の範囲にある。ＦＲＰ材３の熱硬化に要する時間は、たとえば６０分〜９０分である。インフォーム型２に合成ワックスを使用する理由は、天然ワックスや石油ワックスの場合は、融点が低いので、ＦＲＰ材３が硬化する前に溶け出してしまうため、使用に不適であるからである。   The thermosetting temperature of the resin contained in the FRP material 3 is about 100 ° C. to 150 ° C., and the thermosetting completion temperature of the resin contained in the FRP material 3 is in the range of 130 ° C. to 150 ° C. The time required for thermosetting the FRP material 3 is, for example, 60 minutes to 90 minutes. The reason why the synthetic wax is used for the Inform mold 2 is that natural wax or petroleum wax has a low melting point, so that it melts before the FRP material 3 is cured, which is not suitable for use.

図３に、ＦＲＰ材３とインフォーム型２の温度を上げていく時の、ＦＲＰ材３の凝固とインフォーム型２の合成ワックス５の溶融の関係を示す。ＦＲＰ材３に含まれる熱硬化樹脂の熱硬化は約１００℃から始まり、１３０℃〜１５０℃の範囲のある温度で熱硬化完了する。インフォーム型２の合成ワックス５に１２０℃〜１３０℃の融点を有する合成ワックスを用いる。上記の融点が１２０℃、１２５℃、１３０℃の３種類のワックスを混合した合成ワックスの場合は、合成ワックス５は１２０℃で溶け出し、１３０℃でワックス全量が溶融する。この場合、複数種のワックスの融点のうち最も高い融点１３０℃は、ＦＲＰ材３の樹脂の熱硬化完了温度（１３０℃〜１５０℃の範囲のある温度）以下であることが望ましい。ＦＲＰ材３の樹脂の熱硬化の途中で、合成ワックス５の溶融が始まりかつ完了する。その結果、ＦＲＰ材３の熱硬化と合成ワックス５の溶融は、ＦＲＰ材３とインフォーム型２の同じ加熱工程で、並行して行われる。しかも、合成ワックス５の溶融、排出、すなわち、合成ワックス５の除去が、ＦＲＰ材３の熱硬化の加熱工程で、自動的に、ＦＲＰ材３の熱硬化と同時に、行われる。   FIG. 3 shows the relationship between the solidification of the FRP material 3 and the melting of the synthetic wax 5 of the inform mold 2 when the temperatures of the FRP material 3 and the inform mold 2 are raised. Thermosetting of the thermosetting resin contained in the FRP material 3 starts from about 100 ° C. and is completed at a temperature in the range of 130 ° C. to 150 ° C. A synthetic wax having a melting point of 120 ° C. to 130 ° C. is used for the synthetic wax 5 of Inform type 2. In the case of a synthetic wax in which three types of waxes having the melting points of 120 ° C., 125 ° C., and 130 ° C. are mixed, the synthetic wax 5 melts at 120 ° C., and the entire amount of the wax melts at 130 ° C. In this case, the highest melting point of 130 ° C. among the melting points of the plurality of types of waxes is desirably equal to or lower than the thermosetting completion temperature of the resin of the FRP material 3 (a temperature in the range of 130 ° C. to 150 ° C.). During the thermosetting of the resin of the FRP material 3, the melting of the synthetic wax 5 starts and is completed. As a result, the thermosetting of the FRP material 3 and the melting of the synthetic wax 5 are performed in parallel in the same heating process of the FRP material 3 and the inform mold 2. Moreover, melting and discharging of the synthetic wax 5, that is, removal of the synthetic wax 5 is automatically performed simultaneously with the thermal curing of the FRP material 3 in the heating process of the thermal curing of the FRP material 3.

ＦＲＰ材３が８０％〜９０％熱硬化する温度を融点（複数種のワックスの融点のうち最も高い融点、上記の例では１３０℃）とする合成ワックス５を用いてインフォーム型２を作製することが望ましい。ＦＲＰ材３とインフォーム型２の温度を上げていって、ＦＲＰ材３が８０％〜９０％熱硬化した状態で、合成ワックス５が溶け出すため、合成ワックス５が溶融しワックス排出孔４を通して流出したにもかかわらず、ＦＲＰ材３のＦＲＰ製中空成形品１はその中空形状を維持または保持することができる。ワックスが完全に溶け出した後、ＦＲＰ材３が完全に硬化されるまでＦＲＰ材３が焼成され、ＦＲＰ製中空成形品１が作製される。溶け出したワックスは回収し、インフォーム型２に再利用する。   Inform mold 2 is produced using synthetic wax 5 having a melting point (the highest melting point among a plurality of types of waxes, 130 ° C. in the above example) at which FRP material 3 is thermally cured by 80% to 90%. It is desirable. Since the synthetic wax 5 melts in the state where the temperature of the FRP material 3 and the foam mold 2 is raised and the FRP material 3 is thermally cured by 80% to 90%, the synthetic wax 5 melts and passes through the wax discharge hole 4. Despite flowing out, the FRP hollow molded article 1 of the FRP material 3 can maintain or maintain its hollow shape. After the wax is completely dissolved, the FRP material 3 is fired until the FRP material 3 is completely cured, and the FRP hollow molded product 1 is produced. The dissolved wax is collected and reused in the inform mold 2.

つぎに、本発明のＦＲＰ製中空成形品の成形方法の作用、効果を説明する。
本発明のＦＲＰ製中空成形品１の成形方法は、ＦＲＰ材３とインフォーム型２を加熱してＦＲＰ材３を熱硬化させていき、溶融するインフォーム型２の合成ワックス５をワックス排出孔４から排出するとともに、ＦＲＰ材３を完全に熱硬化させる工程を有する。そのため、ＦＲＰ材３を硬化させる工程でインフォーム型（中子）２を自動的に排出することができる。その結果、従来に比べて特別に中子除去工程が不要な分、工程数を削減でき、成形時間も短縮できる。また、排出される合成ワックス５には溶解液などが混じっていないので、合成ワックス５と溶解液との分離が必要でなく、リサイクル、再利用に便利である。 Next, the operation and effect of the molding method of the FRP hollow molded product of the present invention will be described.
The FRP hollow molded product 1 of the present invention is formed by heating the FRP material 3 and the foam mold 2 to thermally cure the FRP material 3, and then melting the synthetic wax 5 of the melt mold 2 into the wax discharge holes. 4 and discharging the FRP material 3 completely. Therefore, the inform type (core) 2 can be automatically discharged in the process of curing the FRP material 3. As a result, the number of steps can be reduced and the molding time can be shortened because the core removal step is not required. In addition, since the discharged synthetic wax 5 does not contain a solution or the like, it is not necessary to separate the synthetic wax 5 from the solution, which is convenient for recycling and reuse.

ＦＲＰ材３に１００℃〜１５０℃で熱硬化し、熱硬化完了温度が１３０℃〜１５０℃の範囲にある樹脂を含むＣＦＲＰ材を用い、合成ワックス５に１２０℃〜１３０℃の融点を有する合成ワックスを用いることができる。その場合は、ＦＲＰ材３とインフォーム型２を加熱して温度を上げていく時に、ＦＲＰ材３が１３０℃〜１５０℃の温度で熱硬化完了する前に、合成ワックス５を溶融させ、ワックス排出孔４から排出することができる。これによって、合成ワックス５の溶融がＦＲＰ材３の熱硬化と並行して行われ、ＦＲＰ材３の熱硬化と合成ワックス５の溶融との一方を行った後に他方を行う場合に比べて、サイクルタイムを短縮できる。   A synthetic resin having a melting point of 120 ° C. to 130 ° C. is used for the synthetic wax 5 by using a CFRP material containing a resin having a heat curing completion temperature in the range of 130 ° C. to 150 ° C. Wax can be used. In that case, when the FRP material 3 and the foam mold 2 are heated to raise the temperature, the synthetic wax 5 is melted before the FRP material 3 is thermally cured at a temperature of 130 ° C. to 150 ° C. It can be discharged from the discharge hole 4. As a result, the melting of the synthetic wax 5 is performed in parallel with the thermal curing of the FRP material 3, and the cycle is compared with the case where one of the thermal curing of the FRP material 3 and the melting of the synthetic wax 5 is performed and the other is performed. Time can be shortened.

ＦＲＰ材３が８０％〜９０％熱硬化する温度を融点とする合成ワックス５を用いてインフォーム型２を作製することができる。その場合は、ＦＲＰ材３が熱硬化完了する前に合成ワックス５を溶融させ、ワックス排出孔４から排出することができる。これによって、合成ワックス５の溶融がＦＲＰ材３の熱硬化と並行して行われ、ＦＲＰ材３の熱硬化と合成ワックス５の溶融との一方を行った後に他方を行う場合に比べて、サイクルタイムを短縮できる。   Inform mold 2 can be manufactured using synthetic wax 5 having a melting point at which FRP material 3 is thermally cured by 80% to 90%. In that case, the synthetic wax 5 can be melted and discharged from the wax discharge hole 4 before the FRP material 3 is completely cured. As a result, the melting of the synthetic wax 5 is performed in parallel with the thermal curing of the FRP material 3, and the cycle is compared with the case where one of the thermal curing of the FRP material 3 and the melting of the synthetic wax 5 is performed and the other is performed. Time can be shortened.

本発明のＦＲＰ製中空成形品の成形方法の、インフォーム型、ＦＲＰ製中空成形品の、工程順に示した斜視図である。It is the perspective view shown in order of the process of the inform type | mold and the FRP hollow molded article of the shaping | molding method of the FRP hollow molded article of this invention. 本発明のＦＲＰ製中空成形品の成形方法の、インフォーム型、ＦＲＰ製中空成形品の、工程順に示した断面図である。It is sectional drawing shown to the forming method of the hollow molded product made from FRP of this invention in order of the process of the molded form and FRP hollow molded product. 本発明のＦＲＰ製中空成形品の成形方法の、温度を縦軸、時間を横軸にとって、ＦＲＰの硬化と合成ワックスの溶融との関係を示したグラフである。It is the graph which showed the relationship between the hardening of FRP, and the melting | fusing of a synthetic wax of the shaping | molding method of the FRP hollow molded product of this invention on the vertical axis | shaft and time on the horizontal axis.

符号の説明Explanation of symbols

１ ＦＲＰ製中空成形品
２ インフォーム型
３ ＦＲＰ部材
４ ワックス排出孔
５ 合成ワックス DESCRIPTION OF SYMBOLS 1 FRP hollow molded product 2 Inform mold 3 FRP member 4 Wax discharge hole 5 Synthetic wax

Claims (3)

合成ワックスでインフォーム型を作製する工程と、
作製したインフォーム型の外面にＦＲＰ材を貼付するとともに貼付したＦＲＰ材にワックス排出孔を形成する工程と、
ＦＲＰ材とインフォーム型を加熱してＦＲＰ材を熱硬化させていき、溶融するインフォーム型の合成ワックスをワックス排出孔から排出するとともに、ＦＲＰ材を完全に熱硬化させてＦＲＰ製中空成形品とする工程と、
を有するＦＲＰ製中空成形品の成形方法。 A process of producing an in-mold mold with synthetic wax;
Attaching the FRP material to the outer surface of the produced inform mold and forming a wax discharge hole in the attached FRP material;
The FRP material and the foam mold are heated to thermally cure the FRP material, and the melted foam foam is discharged from the wax discharge hole, and the FRP material is completely heat cured to form a hollow molded product made of FRP. And a process of
A method for forming a hollow molded product of FRP having: ＦＲＰ材に１３０℃〜１５０℃で熱硬化する樹脂を含むＦＲＰ材を用い、合成ワックスに１２０℃〜１３０℃の融点を有する合成ワックスを用いる請求項１記載のＦＲＰ製中空成形品の成形方法。   The method for forming an FRP hollow molded article according to claim 1, wherein an FRP material containing a resin that is thermally cured at 130 ° C to 150 ° C is used as the FRP material, and a synthetic wax having a melting point of 120 ° C to 130 ° C is used as the synthetic wax. ＦＲＰ材が８０％〜９０％熱硬化する温度を融点とする合成ワックスを用いてインフォーム型を作製する請求項１または請求項２記載のＦＲＰ製中空成形品の成形方法。   The method for molding an FRP hollow molded article according to claim 1 or 2, wherein an in-mold mold is produced using a synthetic wax having a melting point at a temperature at which the FRP material is thermally cured by 80% to 90%.
JP2006141343A 2006-05-22 2006-05-22 Method for molding frp-made blow molded article Pending JP2007307853A (en)

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WO2021193524A1 (en) * 2020-03-26 2021-09-30 三菱ケミカル株式会社 Method for manufacturing fiber-reinforced resin product, and core
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WO2018079824A1 (en) 2016-10-31 2018-05-03 三菱ケミカル株式会社 Method for manufacturing fiber reinforced plastic molded body
CN109890587A (en) * 2016-10-31 2019-06-14 三菱化学株式会社 The manufacturing method of FRP molded body
CN109890587B (en) * 2016-10-31 2021-07-09 三菱化学株式会社 Method for producing fiber-reinforced plastic molded article
US11325325B2 (en) 2016-10-31 2022-05-10 Mitsubishi Chemical Corporation Method for manufacturing fiber reinforced plastic molded body
JP2022075968A (en) * 2018-04-25 2022-05-18 三菱ケミカル株式会社 Method of manufacturing fiber-reinforced plastic molded product
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WO2021193524A1 (en) * 2020-03-26 2021-09-30 三菱ケミカル株式会社 Method for manufacturing fiber-reinforced resin product, and core
JP2023033471A (en) * 2020-03-26 2023-03-10 三菱ケミカル株式会社 Manufacturing method of fiber-reinforced resin product and core
JP7473024B2 (en) 2020-03-26 2024-04-23 三菱ケミカル株式会社 Method for manufacturing fiber-reinforced resin product and core

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