JPH047127A - Molding process of frp - Google Patents
Molding process of frpInfo
- Publication number
- JPH047127A JPH047127A JP2109278A JP10927890A JPH047127A JP H047127 A JPH047127 A JP H047127A JP 2109278 A JP2109278 A JP 2109278A JP 10927890 A JP10927890 A JP 10927890A JP H047127 A JPH047127 A JP H047127A
- Authority
- JP
- Japan
- Prior art keywords
- wax
- frp
- mold
- melting
- cured
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000000465 moulding Methods 0.000 title claims description 16
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000002844 melting Methods 0.000 claims abstract description 12
- 230000008018 melting Effects 0.000 claims abstract description 12
- 238000010030 laminating Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 229920005989 resin Polymers 0.000 abstract description 5
- 239000011347 resin Substances 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 239000011159 matrix material Substances 0.000 abstract description 3
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000007598 dipping method Methods 0.000 abstract 1
- 230000004927 fusion Effects 0.000 abstract 1
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 27
- 239000011151 fibre-reinforced plastic Substances 0.000 description 27
- 239000001993 wax Substances 0.000 description 24
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000009787 hand lay-up Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009730 filament winding Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野］
本発明は、ロストワックス法が可能なワックス製成形型
を使用するＦＲＰ成形法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an FRP molding method using a wax mold capable of performing the lost wax method.
従来、例えばガラス繊維を補強材としたＦＲＰ（繊維強
化プラスチック）バイブの継手類は主にハンドレイアッ
プ法により成形されているが、これに用いる型はアルミ
材又は鋼材が用いられ、成形時に一方向の型抜きが困難
な場合には分割型が使用されている。Conventionally, fittings for FRP (fiber-reinforced plastic) vibes that use glass fiber as a reinforcing material have been mainly molded using the hand lay-up method, but the molds used for this are made of aluminum or steel, and the A split die is used when directional die cutting is difficult.
第３図はＦＲＰエルボの製造時における断面図であり、
図中６．６ａ、 ６ｂは金属製の分割型であり、５は上
記分割型を組合わせた型にハンドレイアップによって積
層して成形硬化したＦＲＰエルボであり、成形後分割型
６．６ａ、 ６ｂは容易に取外すことができる。Figure 3 is a cross-sectional view of the FRP elbow during manufacture.
In the figure, 6.6a and 6b are metal split molds, 5 is an FRP elbow that is laminated by hand lay-up on a mold that combines the above split molds, and molded and hardened; after molding, the split molds 6.6a, 6b can be easily removed.
しかしながら、従来の技術で述べた上記分割型を使用す
る場合には、次のような問題点があり好ましくない。す
なわち、
（１）生産性向上のためには多数の分割型が必要となり
、型代が増加し不経済である。However, when using the above-mentioned split type described in the prior art, there are the following problems and it is not preferable. That is, (1) In order to improve productivity, a large number of divided molds are required, which increases mold costs and is uneconomical.
（２）成形ごとに型の分割と再組立てを繰り返すために
、工程に時間がかかり製造コストが上昇する。(2) Since the mold is repeatedly divided and reassembled for each molding process, the process takes time and manufacturing costs increase.
（３）型の分割線が成形品に転写されるために、内面の
平滑性を要求されるパイプ継手等では商品価値が低下す
るなど、などである。(3) Since the parting line of the mold is transferred to the molded product, the commercial value of pipe joints, etc., which require inner surface smoothness, decreases.
本発明の目的は上記のような欠点のないＦＲＰ成形法を
提供することにある。An object of the present invention is to provide an FRP molding method that does not have the above-mentioned drawbacks.
上記目的を達成するために、本発明のＦＲＰ成形法にお
いては、ワックス製成形型にＦＲＰ材を積層し成形硬化
後、上記ワックス製成形型を溶融除去するものである。In order to achieve the above object, in the FRP molding method of the present invention, an FRP material is laminated on a wax mold, and after molding and curing, the wax mold is melted and removed.
上記成形硬化は、ワックス製成形型の溶融型くずれを防
止する上から、常温硬化で行うのが好ましい。The above-mentioned molding and curing is preferably carried out at room temperature in order to prevent the melting mold from deteriorating in the wax mold.
以下、図面に基づき本発明の詳細な説明する。 Hereinafter, the present invention will be described in detail based on the drawings.
第１図はＦＲＰエルボの製造時における断面図であり、
１は、例えばパラフィン、天然ワックス、ロジンを混合
した融点８３〜８７°Ｃ程度のワックス素材を、型内圧
的３０ｋｇｆ／ｃｉＮ程度の低圧の成形機により成形し
たワックス製成形型であり、２はワックス製成形型１に
ＦＲＰ材をハンドレイア・ンプ法で積層し成形硬化した
ＦＲＰエルボである。Figure 1 is a cross-sectional view of the FRP elbow during manufacture.
1 is a wax mold made by molding a wax material with a melting point of about 83 to 87°C, which is a mixture of paraffin, natural wax, and rosin, using a molding machine with a low mold internal pressure of about 30 kgf/ciN; This is an FRP elbow in which FRP materials are laminated on a mold 1 using the hand-laying method and then molded and hardened.
この場合、成形型１は溶融性の良いワックスを素材とし
ているために一般に表面がなめらかで且つ不活性である
ために通常のように離型剤等を用いることなしに直接ハ
ンドレイアップが可能である。In this case, the mold 1 is made of wax with good melting properties, so the surface is generally smooth and inert, so direct hand lay-up is possible without using a mold release agent as usual. be.
ただしこの場合ワックス製成形型はワックスを素材とし
ているので、ハンドレイアップしたＦＲＰ材の硬化時の
発熱に注意しないとワックスが６０〜７０°Ｃで溶融を
はじめて型がくずれるという不具合を生ずる。従って、
ワックスの種類にもよるが、ハンドレイアップしたＦＲ
Ｐ材の硬化は常温下でゆっくりと行わせる。そのために
はＦＲＰのマトリックス樹脂中に配合する硬化剤（マト
リックス樹脂がビニルエステル樹脂又は不飽和ポリエス
テル樹脂の場合、第１表に示す配合）は、通常の常温硬
化時の場合よりも適宜域する（通常の８０％以下の配合
量）とする必要がある。However, in this case, the wax mold is made of wax, so if care is not taken to avoid heat generation when the hand-layed up FRP material hardens, the wax will begin to melt at 60 to 70°C and the mold will collapse. Therefore,
Depending on the type of wax, hand laid up FR
The P material is cured slowly at room temperature. To achieve this, the curing agent blended into the matrix resin of FRP (if the matrix resin is vinyl ester resin or unsaturated polyester resin, the formulation shown in Table 1) should be adjusted to an appropriate range compared to that for normal room temperature curing ( (80% or less of the usual amount).
第１表
ＦＲＰ材は硬化後、ワックス製成形型を加熱溶融除去し
製品化するが、この際のワックス製成形型の熔融方法と
しては、オートクレーブ中での蒸気加熱、加熱炉中での
溶融、沸騰水中への浸漬等が用いられるが、２〜３分程
度の短時間でワックス製成形型の溶融とＦＲＰ製品の取
出しが可能である。なお、溶融分離したワックスは水と
分離すれば再使用が可能である。After curing, the FRP material in Table 1 is manufactured by heating and melting the wax mold to remove it.The methods for melting the wax mold at this time include steam heating in an autoclave, melting in a heating furnace, Although immersion in boiling water or the like is used, it is possible to melt the wax mold and take out the FRP product in a short time of about 2 to 3 minutes. Note that the melted and separated wax can be reused if it is separated from water.
また本発明の方法によると複雑な形状のＦＲＰ成形品も
容易に成形が可能である。この−例を説明すると、第２
図（ａ）はアンダーカット部を有するＦＲＰパイプの製
造時における断面図で、３はワックス製成形型、４は該
ワックス製成形型３上に積層したＦＲＰパイプであり、
ワックス製成形型３の溶融分離により第２図（ｂ）の断
面図に示すようにアンダーカット部４ａを有するＦＲＰ
パイプ４を得ることができる。Furthermore, according to the method of the present invention, even complex-shaped FRP molded products can be easily molded. To explain this example, the second
Figure (a) is a cross-sectional view of an FRP pipe having an undercut portion during manufacture, where 3 is a wax mold, 4 is an FRP pipe laminated on the wax mold 3,
By melting and separating the wax mold 3, an FRP having an undercut portion 4a as shown in the cross-sectional view of FIG. 2(b) is formed.
Pipe 4 can be obtained.
なお、本発明におけるワックス製成形型は上記実施例に
よるハンドレイアップ法のみでなく、スプレーアップ法
やフィラメントワインディング法にも適用可能である。The wax mold of the present invention can be applied not only to the hand lay-up method according to the above embodiments, but also to the spray-up method and filament winding method.
本発明によると、ワックスを素材とする成形型を用いた
ので、該成形型によりＦ’ＲＰ材を成形した後成形型を
加熱により容易に除去することができるため、複雑且つ
精密な形状のＦＲＰ成形品の製造を能率的且つ経済的に
行うことが可能である。According to the present invention, since a mold made of wax is used, the mold can be easily removed by heating after molding the F'RP material with the mold, so that FRP material with complex and precise shapes can be easily removed. It is possible to manufacture molded products efficiently and economically.
さらにＦＲＰ成形品の内面は極めて平滑となり、商品価
値を高めることができる。Furthermore, the inner surface of the FRP molded product becomes extremely smooth, increasing its commercial value.
第１図は本発明のＦＲＰ成形法によるＦＲＰエルボの製
造時における断面図、第２図（ａ）は本発明のＦＲＰ成
形法によるアンダーカット部を有するＦＲＰパイプの製
造時における断面図、第２図（ｂ）は第２図（ａ）によ
り製造したアンダーカット部を有するＦＲＰパイプの断
面図、第３図は従来の成形法によるＦＲＰエルボの製造
時における断面図である。
符号の説明
１−ワックス製成形型 ２−Ｆ ＲＰエルボ３・・−
ワックス製成形型
４・−・ＦＲＰバイブ
ａ
アンダーカット部
ＦＲＰエルボ
ａ
６ｂ−・分割型
第
図
第２図
第３図FIG. 1 is a cross-sectional view of an FRP elbow when manufactured by the FRP molding method of the present invention, FIG. Figure (b) is a cross-sectional view of an FRP pipe having an undercut portion manufactured according to Figure 2 (a), and Figure 3 is a cross-sectional view of an FRP elbow manufactured by a conventional molding method. Explanation of symbols 1-Wax mold 2-F RP elbow 3...-
Wax mold 4 - FRP vibe a Undercut part FRP elbow a 6b - Split mold Fig. 2 Fig. 3
Claims (1)
上記ワックス製成形型を溶融除去することを特徴とする
ＦＲＰ成形法。 ２、成形硬化が常温硬化である請求項１記載のＦＲＰ成
形法。[Claims] 1. After laminating FRP material on a wax mold and curing the mold,
An FRP molding method characterized by melting and removing the wax mold. 2. The FRP molding method according to claim 1, wherein the molding and curing is room temperature curing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2109278A JPH047127A (en) | 1990-04-25 | 1990-04-25 | Molding process of frp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2109278A JPH047127A (en) | 1990-04-25 | 1990-04-25 | Molding process of frp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH047127A true JPH047127A (en) | 1992-01-10 |
Family
ID=14506118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2109278A Pending JPH047127A (en) | 1990-04-25 | 1990-04-25 | Molding process of frp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH047127A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007069349A (en) * | 2005-09-02 | 2007-03-22 | Toho Tenax Co Ltd | Manufacturing method of tubular member |
| JP2009034228A (en) * | 2007-07-31 | 2009-02-19 | Apple Corp | Molding method for mannequin body |
| EP2303411A2 (en) * | 2008-06-20 | 2011-04-06 | Elkhart Brass Manufacturing Company, Inc. | Fire fighting device with waterway |
| DE102007057198B4 (en) * | 2007-11-28 | 2017-04-20 | Daimler Ag | Process for producing a fiber composite hollow body with power flow and voltage optimized fiber alignment |
| 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 |
-
1990
- 1990-04-25 JP JP2109278A patent/JPH047127A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007069349A (en) * | 2005-09-02 | 2007-03-22 | Toho Tenax Co Ltd | Manufacturing method of tubular member |
| JP2009034228A (en) * | 2007-07-31 | 2009-02-19 | Apple Corp | Molding method for mannequin body |
| DE102007057198B4 (en) * | 2007-11-28 | 2017-04-20 | Daimler Ag | Process for producing a fiber composite hollow body with power flow and voltage optimized fiber alignment |
| EP2303411A2 (en) * | 2008-06-20 | 2011-04-06 | Elkhart Brass Manufacturing Company, Inc. | Fire fighting device with waterway |
| EP2303411A4 (en) * | 2008-06-20 | 2013-12-18 | Elkhart Brass Mfg Co | Fire fighting device with waterway |
| 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 |
| US11325325B2 (en) | 2016-10-31 | 2022-05-10 | Mitsubishi Chemical Corporation | Method for manufacturing fiber reinforced plastic molded body |
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