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JP2002036275A - Method for manufacturing glass fiber reinforced thermosetting resin molded article - Google Patents

Method for manufacturing glass fiber reinforced thermosetting resin molded article

Info

Publication number
JP2002036275A
JP2002036275A JP2000224675A JP2000224675A JP2002036275A JP 2002036275 A JP2002036275 A JP 2002036275A JP 2000224675 A JP2000224675 A JP 2000224675A JP 2000224675 A JP2000224675 A JP 2000224675A JP 2002036275 A JP2002036275 A JP 2002036275A
Authority
JP
Japan
Prior art keywords
glass fiber
fiber reinforced
composite material
resin composite
reinforced resin
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.)
Granted
Application number
JP2000224675A
Other languages
Japanese (ja)
Other versions
JP3700552B2 (en
Inventor
Masahide Kawamura
正英 川村
Naoto Ikegawa
直人 池川
Masunori Kobayakawa
益律 小早川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP2000224675A priority Critical patent/JP3700552B2/en
Publication of JP2002036275A publication Critical patent/JP2002036275A/en
Application granted granted Critical
Publication of JP3700552B2 publication Critical patent/JP3700552B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To manufacture a glass fiber reinforced thermosetting resin molded article generating no anisotropy in strength by suppressing the orientation of glass fibers in a specific direction caused by flowing pressure at the time of mold clamping. SOLUTION: A glass fiber reinforced resin composite material 1 is set to the inside of the upwardly opened recessed mold part 3 provided to a lower mold 2, and the lower mold 2 and an upper mold 5 having a downwardly projected mold part 4 are clamped to fill the cavity formed between the recessed mold part 3 and the projected mold part 4 with the glass fiber reinforced resin composite material 1 to manufacture the glass fiber reinforced thermosetting resin molded article. A mold clamping speed, at a time when the glass fiber reinforced resin composite material 1 flows through the gap between the inner surface of the recessed mold part 3 and the outer surface of the projected mold part 4 after flowing along the almost whole surface of the bottom surface part of the recessed mold part 3, is made slower than a mold clamping speed until the glass fiber reinforced resin composite material flows along the almost whole surface of the bottom surface part of the recessed mold part 3.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、ガラス繊維強化樹
脂複合材料を下型と上型との型締めにより成形してガラ
ス繊維強化熱硬化性樹脂成形品を得るためのガラス繊維
強化熱硬化性樹脂成形品の製造方法に係るものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass fiber reinforced thermosetting resin molded article obtained by molding a glass fiber reinforced resin composite material by clamping a lower mold and an upper mold. The present invention relates to a method for manufacturing a resin molded product.

【0002】[0002]

【従来の技術】従来からシートモールドコンパウンド
(SMC)やバルクモールドコンパウンド(BMC)等
の不飽和ポリエステル樹脂にガラス繊維を混入したガラ
ス繊維強化樹脂複合材料によりガラス繊維強化熱硬化性
樹脂成形品を製造している。このシートモールドコンパ
ウンドやバルクモールドコンパウンドはその強化繊維の
補強効果により高い機械的特性を有している。しかしな
がら、成形時の流動によって強化繊維が特定の方向に配
向することにより、強度に異方性が生じ、特にこの異方
性により弱化する部位がガラス繊維強化熱硬化性樹脂成
形品の高い応力が発生する部位と一致すると、ガラス繊
維強化熱硬化性樹脂成形品の破壊等の問題が発生する。
2. Description of the Related Art Conventionally, a glass fiber reinforced thermosetting resin molded article is manufactured from a glass fiber reinforced resin composite material in which glass fibers are mixed into an unsaturated polyester resin such as a sheet mold compound (SMC) or a bulk mold compound (BMC). are doing. The sheet mold compound and the bulk mold compound have high mechanical properties due to the reinforcing effect of the reinforcing fibers. However, when the reinforcing fibers are oriented in a specific direction due to the flow during molding, anisotropy occurs in the strength, and particularly, the portion weakened by this anisotropy is a high stress of the glass fiber reinforced thermosetting resin molded article. If it coincides with the site where the occurrence occurs, problems such as destruction of the glass fiber reinforced thermosetting resin molded article occur.

【0003】従来、ガラス繊維強化樹脂複合材料を下型
に設けた上方に開口した凹型部内にセットし、この下型
と下方に突出した凸型部を有する上型とを型締めして凹
型部と凸型部との間に形成されるキャビティ内にガラス
繊維強化樹脂複合材料を充填してガラス繊維強化熱硬化
性樹脂成形品を製造する場合、型締め速度が従来にあっ
ては、最初から最後まで一定の速度であった。ところ
が、このように型締め速度が最初から最後まで一定の速
度だと、ガラス繊維強化樹脂複合材料が凹型部の底面部
のほぼ全面に流れるまではガラス繊維強化樹脂複合材料
の流速が遅く、ガラス繊維強化樹脂複合材料が凹型部の
底面部のほぼ全面に流れた後に凹型部の内面と凸型部の
外面との間を流れる速度が数倍速くなり、このように凹
型部の内面と凸型部の外面との間を流れる速度が数倍速
くなることでガラス繊維が特定の方向に配向してしまう
という問題がある。したがって浴槽などの容器形状のガ
ラス繊維強化熱硬化性樹脂成形品を製造する場合、容器
形状の側壁部分においてガラス繊維が特定方向に配向す
る現象が生じる恐れがある。
Conventionally, a glass fiber reinforced resin composite material is set in an upwardly opened concave portion provided in a lower die, and the lower die and an upper die having a downwardly projecting convex portion are clamped to form a concave portion. When the glass fiber reinforced thermosetting resin molded product is manufactured by filling the glass fiber reinforced resin composite material into the cavity formed between the convex portion and the convex portion, the mold clamping speed is conventionally from the beginning. The speed was constant until the end. However, if the mold clamping speed is constant from the beginning to the end as described above, the flow rate of the glass fiber reinforced resin composite material is slow until the glass fiber reinforced resin composite material flows over almost the entire bottom surface of the concave portion, and the glass After the fiber-reinforced resin composite material flows over almost the entire bottom surface of the concave portion, the speed of flowing between the inner surface of the concave portion and the outer surface of the convex portion is several times faster, and thus the inner surface of the concave portion and the convex There is a problem that the glass fiber is oriented in a specific direction by increasing the speed of flowing between the outer surface of the portion several times. Therefore, when manufacturing a glass fiber reinforced thermosetting resin molded product in the shape of a container such as a bathtub, a phenomenon in which the glass fibers are oriented in a specific direction on the side wall portion of the container may occur.

【0004】また、従来にあっては、成形に使用するガ
ラス繊維強化樹脂複合材料は粘度が同じものを使用して
おり、このように粘度が一定のものは型締めによりガラ
ス繊維が流動により特定方向に配向されやすいという問
題がある。
Conventionally, glass fiber reinforced resin composite materials used for molding have the same viscosity, and in the case of a material having a constant viscosity, the glass fibers are specified by the flow of the mold by clamping. There is a problem that it is easily oriented in the direction.

【0005】[0005]

【発明が解決しようとする課題】本発明は上記の点に鑑
みてなされたものであり、型締め時における流動により
ガラス繊維が特定方向に配向するのを抑え、強度に異方
性が生じないガラス繊維強化熱硬化性樹脂成形品の製造
方法を提供することを課題とするものである。
SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and suppresses the orientation of glass fibers in a specific direction due to flow during mold clamping, and does not cause anisotropy in strength. An object of the present invention is to provide a method for producing a glass fiber reinforced thermosetting resin molded product.

【0006】[0006]

【課題を解決するための手段】上記課題を解決するため
に本発明に係るガラス繊維強化熱硬化性樹脂成形品の製
造方法は、ガラス繊維強化樹脂複合材料1を下型2に設
けた上方に開口した凹型部3内にセットし、この下型2
と下方に突出した凸型部4を有する上型5とを型締めし
て凹型部3と凸型部4との間に形成されるキャビティ内
にガラス繊維強化樹脂複合材料1を充填してガラス繊維
強化熱硬化性樹脂成形品を製造するに当たり、ガラス繊
維強化樹脂複合材料1が凹型部3の底面部のほぼ全面に
流れるまでの型締め速度よりも、ガラス繊維強化樹脂複
合材料1が凹型部3の底面部のほぼ全面に流れた後に凹
型部3の内面と凸型部4の外面との間を流れる際の型締
め速度を遅くすることを特徴とするものである。このよ
うな方法を採用することで、ガラス繊維強化樹脂複合材
料1が凹型部3の底面部のほぼ全面に流れた後に凹型部
3の内面と凸型部4の外面との間を流れる際にガラス繊
維強化樹脂複合材料の流動速度が速くなろうとするが、
この段階における型締め速度を遅くすることでガラス繊
維強化樹脂複合材料1の流動速度を遅くできてガラス繊
維の特定方向への配向を抑えることができるものであ
り、しかも、ガラス繊維強化樹脂複合材料1が凹型部3
の底面部のほぼ全面に流れるまでの型締め速度は遅くし
ないので、ガラス繊維強化樹脂複合材料1が凹型部3の
底面部のほぼ全面に流れるまでの時間が必要以上にかか
らず、成形時間が必要以上に長くならないものである。
Means for Solving the Problems In order to solve the above-mentioned problems, a method for producing a glass fiber reinforced thermosetting resin molded product according to the present invention is described in which a glass fiber reinforced resin composite material 1 is provided above a lower mold 2. The lower mold 2 is set in the open concave portion 3.
And an upper mold 5 having a convex part 4 protruding downward, the glass fiber reinforced resin composite material 1 is filled in a cavity formed between the concave part 3 and the convex part 4 and glass is formed. In manufacturing the fiber-reinforced thermosetting resin molded product, the glass fiber-reinforced resin composite material 1 is more likely to be concave than the mold-clamping speed at which the glass fiber-reinforced resin composite material 1 flows over substantially the entire bottom surface of the concave portion 3. The method is characterized in that the mold clamping speed when flowing between the inner surface of the concave portion 3 and the outer surface of the convex portion 4 after flowing over almost the entire bottom surface of the mold 3 is reduced. By employing such a method, when the glass fiber reinforced resin composite material 1 flows over almost the entire bottom surface of the concave portion 3 and then flows between the inner surface of the concave portion 3 and the outer surface of the convex portion 4 Although the flow rate of the glass fiber reinforced resin composite material is going to increase,
By reducing the mold clamping speed at this stage, the flow speed of the glass fiber reinforced resin composite material 1 can be reduced, and the orientation of the glass fiber in a specific direction can be suppressed. 1 is concave part 3
Since the mold-clamping speed is not slowed down until almost the entire bottom surface of the concave portion 3 flows, the time required for the glass fiber reinforced resin composite material 1 to flow over almost the entire bottom surface of the concave portion 3 does not take longer than necessary. Is not longer than necessary.

【0007】また、ガラス繊維強化樹脂複合材料1を下
型2に設けた上方に開口した凹型部3内にセットし、こ
の下型2と下方に突出した凸型部4を有する上型5とを
型締めして凹型部3と凸型部4との間に形成されるキャ
ビティ内にガラス繊維強化樹脂複合材料1を充填してガ
ラス繊維強化熱硬化性樹脂成形品を製造するに当たり、
ガラス繊維強化樹脂複合材料1として粘度の異なる複数
種類のガラス繊維強化樹脂複合材料1を重ねて凹型部3
内にセットし、その後型締めすることが好ましい。この
ような方法を採用することで、型締めするとガラス繊維
強化樹脂複合材料1のうちまず粘度の低いガラス繊維強
化樹脂複合材料1aが先に潰され、先に潰された粘度の
低いガラス繊維強化樹脂複合材料1aの外周部が3次元
的に流動してガラス繊維の配向が抑えられ、更に、先に
潰された粘度の低いガラス繊維強化樹脂複合材料1aの
外周部が3次元的に流動して粘度の高いガラス繊維強化
樹脂複合材料1の外周を包み込み、この状態で粘度の高
いガラス繊維強化樹脂複合材料1bも徐々に潰されてい
って粘度の高いガラス繊維強化樹脂複合材料1aと粘度
の低いガラス繊維強化樹脂複合材料1bとが混じり合い
ながら流動することでガラス繊維の配向を抑えることが
できるものである。
Further, the glass fiber reinforced resin composite material 1 is set in an upwardly opened concave portion 3 provided in a lower die 2, and the lower die 2 and an upper die 5 having a downwardly projecting convex portion 4 are formed. To fill the cavity formed between the concave portion 3 and the convex portion 4 with the glass fiber reinforced resin composite material 1 to produce a glass fiber reinforced thermosetting resin molded product.
A plurality of types of glass fiber reinforced resin composite materials 1 having different viscosities are stacked as the glass fiber reinforced resin
It is preferable to set the inside and then clamp the mold. By adopting such a method, when the mold is clamped, the glass fiber reinforced resin composite material 1a having a low viscosity in the glass fiber reinforced resin composite material 1 is crushed first, and the glass fiber reinforced low viscosity resin crushed first is obtained. The outer peripheral portion of the resin composite material 1a flows three-dimensionally to suppress the orientation of the glass fibers, and the outer peripheral portion of the previously crushed low-viscosity glass fiber reinforced resin composite material 1a flows three-dimensionally. The glass fiber reinforced resin composite material 1 having a high viscosity is wrapped around the outer periphery of the glass fiber reinforced resin composite material 1 having a high viscosity. By flowing while mixing with the low glass fiber reinforced resin composite material 1b, the orientation of the glass fibers can be suppressed.

【0008】[0008]

【発明の実施の形態】以下、本発明を添付図面に示す実
施形態に基づいて説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments shown in the accompanying drawings.

【0009】図1、図2には本発明の一実施形態が示し
てある。ガラス繊維強化樹脂複合材料1によりガラス繊
維強化熱硬化性樹脂成形品を成形するための成形型は下
型2と上型5とで構成してある。下型2は上方に開口し
た凹型部3を有しており、上型5は下方に突出した凸型
部4を有している。
FIGS. 1 and 2 show an embodiment of the present invention. A molding die for molding a glass fiber reinforced thermosetting resin molded product from the glass fiber reinforced resin composite material 1 is composed of a lower mold 2 and an upper mold 5. The lower die 2 has a concave part 3 opening upward, and the upper die 5 has a convex part 4 projecting downward.

【0010】ガラス繊維強化樹脂複合材料1としては、
例えば、不飽和ポリエステル樹脂にガラス繊維を混入し
たバルクモールドコンパウンド(BMC)やシートモー
ルドコンパウンド(SMC)が用いられる。ここで、バ
ルクモールドコンパウンドの配合の具体例を一例として
挙げると、例えば、不飽和ポリエステル樹脂30重量
部、水酸化アルミニウム60重量部、ガラス繊維(繊維
長1.5mmのものと6mmのものの2種類を混用)1
0重量部、硬化剤と増粘剤を少量混合したものである。
もちろん、本実施形態に使用するガラス繊維強化樹脂複
合材料1としてはこれにのみ限定されるものではない。
The glass fiber reinforced resin composite material 1 includes:
For example, a bulk mold compound (BMC) or a sheet mold compound (SMC) in which glass fiber is mixed with an unsaturated polyester resin is used. Here, as specific examples of the compounding of the bulk mold compound, for example, there are two kinds of unsaturated polyester resin 30 parts by weight, aluminum hydroxide 60 parts by weight, glass fiber (1.5 mm fiber length and 6 mm fiber length). 1)
0 parts by weight, a small amount of a curing agent and a thickener are mixed.
Of course, the glass fiber reinforced resin composite material 1 used in the present embodiment is not limited to this.

【0011】本実施形態においては、上記のガラス繊維
強化樹脂複合材料1を下型2の凹型部3の底部にセット
し、上型5を移動させて上下型5,2を型締めして凹型
部3と凸型部4との間に形成されるキャビティ内にガラ
ス繊維強化樹脂複合材料1を充填してガラス繊維強化熱
硬化性樹脂成形品を製造するに当たり、ガラス繊維強化
樹脂複合材料1が凹型部3の底面部のほぼ全面に流れる
までの型締め速度よりも、ガラス繊維強化樹脂複合材料
1が凹型部3の底面部のほぼ全面に流れた後に凹型部3
の内面と凸型部4の外面との間を流れる際の型締め速度
を遅くして成形するのである。
In the present embodiment, the above-mentioned glass fiber reinforced resin composite material 1 is set on the bottom of the concave portion 3 of the lower die 2, the upper die 5 is moved, and the upper and lower dies 5, 2 are clamped to form the concave die. When the glass fiber reinforced resin composite material 1 is filled in the cavity formed between the part 3 and the convex part 4 to produce a glass fiber reinforced thermosetting resin molded product, the glass fiber reinforced resin composite material 1 After the glass fiber reinforced resin composite material 1 has flowed over almost the entire bottom surface of the concave portion 3, the mold clamping speed is lower than the mold clamping speed required to flow over almost the entire bottom surface of the concave portion 3.
The mold is formed with a reduced mold clamping speed when flowing between the inner surface of the mold and the outer surface of the convex part 4.

【0012】すなわち、図1はガラス繊維強化樹脂複合
材料1を下型2の凹型部3の底部にセットした状態を示
している。図1に示す実施形態においてはガラス繊維強
化樹脂複合材料1としてバルクモールドコンパウンド
(BMC)を用いた例である。そして図2(a)の型締
めを開始したステップ1の段階から、図2(b)のよう
にガラス繊維強化樹脂複合材料1が凹型部3の底面部の
ほぼ全面に流れるステップ2の段階までは型締め速度を
10〜15mm/secで行う。このステップ1からス
テップ2までの間は流路厚みが50〜200mmであっ
て10〜15mm/secという比較的速い型締め速度
で型締めしてもガラス繊維強化樹脂複合材料1は比較的
遅い流速で凹型部3の底面部のほぼ全面に広がってい
き、このため、成形時の流動によりガラス繊維がある特
定方向に配向しにくいものである。
That is, FIG. 1 shows a state where the glass fiber reinforced resin composite material 1 is set on the bottom of the concave portion 3 of the lower die 2. The embodiment shown in FIG. 1 is an example in which a bulk mold compound (BMC) is used as the glass fiber reinforced resin composite material 1. Then, from the stage of step 1 in FIG. 2A where the mold clamping is started to the stage of step 2 where the glass fiber reinforced resin composite material 1 flows over almost the entire bottom surface of the concave portion 3 as shown in FIG. Is performed at a mold clamping speed of 10 to 15 mm / sec. From step 1 to step 2, the glass fiber reinforced resin composite material 1 has a relatively low flow velocity even if the flow path thickness is 50 to 200 mm and the mold is clamped at a relatively high mold clamping speed of 10 to 15 mm / sec. As a result, the glass fiber spreads over almost the entire bottom surface of the concave portion 3, so that the glass fiber is less likely to be oriented in a specific direction due to the flow during molding.

【0013】図2(b)のステップ2の段階の後、型締
めを継続するとガラス繊維強化樹脂複合材料1が凹型部
3の内面と凸型部4の外面との間を流れて図2(c)に
示すステップ3に至る。この場合、ステップ2からステ
ップ3までの間の型締め速度を上記ステップ1からステ
ップ2に至る型締め速度と同じ速度、つまり10〜15
mm/secで行うと、凹型部3の内面と凸型部4の外
面との間は流路厚みは成形品の厚みとほぼ同じ8〜12
mmであるため、ガラス繊維強化樹脂複合材料1の流速
はステップ1からステップ2までの流速の約6〜10倍
になり、成形時の流動によりガラス繊維はある特定方向
への配向を強めるものである。そこで、ステップ2にな
った段階で型締め速度を落とし(例えば1〜5mm/s
ecに落とし)、成形時の流動によるガラス繊維の配向
を抑制するものである。
When the mold clamping is continued after the step 2 in FIG. 2B, the glass fiber reinforced resin composite material 1 flows between the inner surface of the concave portion 3 and the outer surface of the convex portion 4 and FIG. It reaches step 3 shown in c). In this case, the mold clamping speed from step 2 to step 3 is the same as the mold clamping speed from step 1 to step 2, that is, 10 to 15
mm / sec, the flow path thickness between the inner surface of the concave portion 3 and the outer surface of the convex portion 4 is approximately the same as the thickness of the molded product, ie, 8 to 12 mm.
mm, the flow rate of the glass fiber reinforced resin composite material 1 is about 6 to 10 times the flow rate from step 1 to step 2, and the glass fiber strengthens the orientation in a specific direction by the flow during molding. is there. Therefore, at the stage of step 2, the mold clamping speed is reduced (for example, 1 to 5 mm / s).
ec) to suppress the orientation of the glass fibers due to the flow during molding.

【0014】上記ステップ2の段階は、例えば、凹型部
3の底部の端部に圧力センサのようなセンサを設けてガ
ラス繊維強化樹脂複合材料1が凹型部3の底部の端部ま
で流れたことを検出するようにするが、もちろん、ステ
ップ2の段階を検出するためにはこれにのみ限定され
ず、他の種々の検出手段が採用できるのはもちろんであ
る。
In the step 2 described above, for example, a sensor such as a pressure sensor is provided at the bottom end of the concave portion 3 so that the glass fiber reinforced resin composite material 1 flows to the bottom end of the concave portion 3. However, the detection of the step 2 is not limited to this, and it is a matter of course that other various detection means can be adopted.

【0015】なお、成形の際の成形型温度は110〜1
50℃である。
The temperature of the mold during molding is 110 to 1
50 ° C.

【0016】次に、図3、図4に基づいて本発明の他の
実施形態につき説明する。本実施形態においては、下型
2の凹型部3内にセットするガラス繊維強化樹脂複合材
料1として粘度の異なる複数種類のガラス繊維強化樹脂
複合材料1を重ねたものを使用する点に特徴がある。
Next, another embodiment of the present invention will be described with reference to FIGS. The present embodiment is characterized in that a plurality of types of glass fiber reinforced resin composite materials 1 having different viscosities are stacked as the glass fiber reinforced resin composite material 1 set in the concave portion 3 of the lower mold 2. .

【0017】すなわち、図3に示すように、成形型は下
型2と上型5とで構成してあり、下型2は上方に開口し
た凹型部3を有しており、上型5は下方に突出した凸型
部4を有している。
That is, as shown in FIG. 3, the molding die is composed of a lower die 2 and an upper die 5, and the lower die 2 has a concave die portion 3 opening upward, and the upper die 5 It has a convex part 4 projecting downward.

【0018】粘度の異なる複数種類のガラス繊維強化樹
脂複合材料1としては、例えば粘度の低いガラス繊維強
化樹脂複合材料1aとして、不飽和ポリエステル樹脂3
0重量部、充填剤(炭酸カルシウム)45重量部、ガラ
ス繊維(繊維長さ1インチ)24重量部、増粘剤0.2
重量部、硬化剤少量を混合した粘度20万ポイズ程度の
ものを例示することができ、また、粘度の高いガラス繊
維強化樹脂複合材料1bとして、不飽和ポリエステル樹
脂30重量部、充填剤(炭酸カルシウム)45重量部、
ガラス繊維(繊維長さ1インチ)24重量部、増粘剤
0.4重量部、硬化剤少量を混合した粘度60万ポイズ
程度のものを例示することができ、このような粘度の低
いガラス繊維強化樹脂複合材料1aと粘度の高いガラス
繊維強化樹脂複合材料1bとを重ねて下型2の凹型部3
内の底部にセットするものである。もちろん粘度の低い
ガラス繊維強化樹脂複合材料1a、粘度の高いガラス繊
維強化樹脂複合材料1bとしては上記の例に飲み限定さ
れないものであり、要は粘度の異なる複数種類のガラス
繊維強化樹脂複合材料1を重ねて下型2の凹型部3内の
底部にセットすればよい。なお、図3、図4に示す実施
形態においては粘度の低いガラス繊維強化樹脂複合材料
1aの上に粘度の高いガラス繊維強化樹脂複合材料1b
を重ねているが、粘度の高いガラス繊維強化樹脂複合材
料1bの上に粘度の高いガラス繊維強化樹脂複合材料1
aを重ねてもよい。
Examples of the plurality of types of glass fiber reinforced resin composite materials 1 having different viscosities include, for example, an unsaturated polyester resin 3
0 parts by weight, filler (calcium carbonate) 45 parts by weight, glass fiber (fiber length 1 inch) 24 parts by weight, thickener 0.2
Parts by weight and a viscosity of about 200,000 poise mixed with a small amount of a curing agent. As the high-viscosity glass fiber reinforced resin composite material 1b, 30 parts by weight of an unsaturated polyester resin, a filler (calcium carbonate) ) 45 parts by weight,
A glass fiber having a viscosity of about 600,000 poise mixed with 24 parts by weight of glass fiber (fiber length 1 inch), 0.4 part by weight of a thickener, and a small amount of a curing agent can be exemplified. The reinforced resin composite material 1a and the high-viscosity glass fiber reinforced resin composite material 1b are overlapped and the concave portion 3 of the lower mold 2 is formed.
It is set at the bottom inside. Of course, the glass fiber reinforced resin composite material 1a having a low viscosity and the glass fiber reinforced resin composite material 1b having a high viscosity are not limited to the above examples. May be set on the bottom in the concave portion 3 of the lower die 2. In the embodiment shown in FIGS. 3 and 4, a high-viscosity glass fiber-reinforced resin composite material 1b is provided on a low-viscosity glass fiber-reinforced resin composite material 1a.
Are stacked, but the high viscosity glass fiber reinforced resin composite material 1 is placed on the high viscosity glass fiber reinforced resin composite material 1b.
a may be overlapped.

【0019】しかして、図3のように粘度の低いガラス
繊維強化樹脂複合材料1aと粘度の高いガラス繊維強化
樹脂複合材料1bとを重ねて下型2の凹型部3内の底部
にセットした後、上型5を移動して上下型5、2の型締
めをしてガラス繊維強化樹脂複合材料1を押し広げるこ
とで上下型5、2の凸型部4と凹型部3との間に形成さ
れるキャビティ内にガラス繊維強化樹脂複合材料1を充
填してガラス繊維強化熱硬化性樹脂成形品を製造するの
である。
Then, as shown in FIG. 3, the glass fiber reinforced resin composite material 1a having a low viscosity and the glass fiber reinforced resin composite material 1b having a high viscosity are stacked and set on the bottom of the concave portion 3 of the lower mold 2. The upper mold 5 is moved, and the upper and lower molds 5 and 2 are clamped and the glass fiber reinforced resin composite material 1 is spread to form between the convex part 4 and the concave part 3 of the upper and lower molds 5 and 2. The cavity formed is filled with the glass fiber reinforced resin composite material 1 to produce a glass fiber reinforced thermosetting resin molded product.

【0020】ここで、図4に本実施形態における重ねて
セットした粘度の低いガラス繊維強化樹脂複合材料1a
と粘度の高いガラス繊維強化樹脂複合材料1bとの上下
型5、2内における型締めによる圧縮力を受けた際の流
れを説明する。すなわち、粘度の低いガラス繊維強化樹
脂複合材料1aと粘度の高いガラス繊維強化樹脂複合材
料1bを重ねた状態で図4(a)のように圧縮力(型締
め力)が矢印P方向から作用すると、図4(b)のよう
にまず最初に粘度の低いガラス繊維強化樹脂複合材料1
aが潰され、先に潰された粘度の低いガラス繊維強化樹
脂複合材料1aの外周部が前後方向だけでなく厚み方向
にも矢印イのように流動するというように3次元的に流
動し、このように3次元的に流動することで粘度の低い
ガラス繊維強化樹脂複合材料1のガラス繊維の特定方向
への配向が抑えられ、更に、先に潰された粘度の低いガ
ラス繊維強化樹脂複合材料1aの外周部が上記のように
3次元的に流動して粘度の高いガラス繊維強化樹脂複合
材料1の外周を包み込み、この状態で図4(c)のよう
に粘度の高いガラス繊維強化樹脂複合材料1bも徐々に
潰されていって粘度の高いガラス繊維強化樹脂複合材料
1aと粘度の低いガラス繊維強化樹脂複合材料1bとが
混じり合いながら流動し、これにより粘度の高いガラス
繊維強化樹脂複合材料1aのガラス繊維の特定方向への
配向と粘度の低いガラス繊維強化樹脂複合材料1bの特
定方向への配向を抑えることができるものである。
FIG. 4 shows a low-viscosity glass fiber reinforced resin composite material 1a according to the present embodiment, which is set in an overlapping manner.
The flow of the high-viscosity glass fiber reinforced resin composite material 1b when subjected to a compressive force due to mold clamping in the upper and lower dies 5, 2 will be described. That is, as shown in FIG. 4A, when the glass fiber reinforced resin composite material 1a having a low viscosity and the glass fiber reinforced resin composite material 1b having a high viscosity are overlaid and a compressive force (clamping force) acts from the direction of arrow P as shown in FIG. First, as shown in FIG. 4B, the glass fiber reinforced resin composite material 1 having a low viscosity is used.
a is crushed, and the outer periphery of the previously crushed glass fiber reinforced resin composite material 1a having a low viscosity flows not only in the front-back direction but also in the thickness direction as indicated by the arrow A, and flows three-dimensionally. By flowing three-dimensionally in this manner, the orientation of the glass fibers of the low-viscosity glass fiber reinforced resin composite material 1 in a specific direction is suppressed, and the previously crushed low viscosity glass fiber reinforced resin composite material is further reduced. The outer periphery of 1a flows three-dimensionally as described above and wraps around the outer periphery of the glass fiber reinforced resin composite material 1 having a high viscosity. In this state, as shown in FIG. The material 1b is also gradually crushed, and the glass fiber reinforced resin composite material 1a having a high viscosity and the glass fiber reinforced resin composite material 1b having a low viscosity flow while being mixed with each other. In which it is possible to suppress the orientation in a specific direction of the glass fiber orientation and viscosity of the low glass-fiber-reinforced resin composite material 1b in a specific direction of the fee 1a.

【0021】もちろん,本実施形態においても、粘度の
異なる複数のガラス繊維強化樹脂複合材料1を下型2に
設けた上方に開口した凹型部3内にセットし、ガラス繊
維強化樹脂複合材料1が凹型部3の底面部のほぼ全面に
流れるまでの型締め速度よりも、ガラス繊維強化樹脂複
合材料1が凹型部3の底面部のほぼ全面に流れた後に凹
型部3の内面と凸型部4の外面との間を流れる際の型締
め速度を遅くするように型締め速度を制御してもよいも
のであり、この場合にはいっそうガラス繊維の特定方向
への配向を防止し、強度に異方性が生じないガラス繊維
強化熱硬化性樹脂成形品を製造することができるもので
ある。
Of course, also in the present embodiment, a plurality of glass fiber reinforced resin composite materials 1 having different viscosities are set in the concave portion 3 which is provided on the lower mold 2 and is opened upward, and the glass fiber reinforced resin composite material 1 is formed. After the glass fiber reinforced resin composite material 1 has flowed over substantially the entire bottom surface of the concave portion 3, the inner surface of the concave portion 3 and the convex portion 4 have a higher speed than the mold clamping speed required to flow over substantially the entire bottom surface of the concave portion 3. The mold-clamping speed may be controlled so as to reduce the mold-clamping speed when flowing between the outer surfaces of the glass fiber.In this case, the orientation of the glass fibers in a specific direction is further prevented, and the strength differs. It is possible to produce a glass fiber reinforced thermosetting resin molded product that does not cause anisotropy.

【0022】[0022]

【発明の効果】上記のように本発明の請求項1記載の発
明にあっては、ガラス繊維強化樹脂複合材料を下型に設
けた上方に開口した凹型部内にセットし、この下型と下
方に突出した凸型部を有する上型とを型締めして凹型部
と凸型部との間に形成されるキャビティ内にガラス繊維
強化樹脂複合材料を充填してガラス繊維強化熱硬化性樹
脂成形品を製造するに当たり、ガラス繊維強化樹脂複合
材料が凹型部の底面部のほぼ全面に流れるまでの型締め
速度よりも、ガラス繊維強化樹脂複合材料が凹型部の底
面部のほぼ全面に流れた後に凹型部の内面と凸型部の外
面との間を流れる際の型締め速度を遅くするので、ガラ
ス繊維強化樹脂複合材料が凹型部の底面部のほぼ全面に
流れるまでの間、ガラス繊維強化樹脂複合材料が凹型部
の底面部のほぼ全面に流れた後に凹型部の内面と凸型部
の外面との間を流れる間のいずれの場合も、ガラス繊維
強化樹脂複合材料の流動速度を遅くできて、型締め時に
おける流動によりガラス繊維の特定方向への配向を抑え
ることができ、また、ガラス繊維強化樹脂複合材料が凹
型部の底面部のほぼ全面に流れるまでの型締め速度は遅
くしないので、ガラス繊維強化樹脂複合材料が凹型部の
底面部のほぼ全面に流れるまでの時間が必要以上にかか
らず、成形時間が必要以上に長くならないものであり、
この結果、型締め時における流動圧によりガラス繊維が
特定方向に配向するのを抑え、強度に異方性が生じない
ガラス繊維強化熱硬化性樹脂成形品を短い成形時間で簡
単に製造することができるものである。
As described above, according to the first aspect of the present invention, the glass fiber reinforced resin composite material is set in a concave portion which is provided on the lower die and is opened upward, and the lower die and the lower die are set. A glass fiber reinforced thermosetting resin is molded by clamping the upper mold having a convex part protruding into the cavity and filling the cavity formed between the concave part and the convex part with the glass fiber reinforced resin composite material. In manufacturing the product, after the glass fiber reinforced resin composite material flows over almost the entire bottom surface of the concave part, the mold clamping speed until the glass fiber reinforced resin composite material flows over almost the entire bottom surface of the concave part Since the mold clamping speed when flowing between the inner surface of the concave portion and the outer surface of the convex portion is reduced, the glass fiber reinforced resin is kept until the glass fiber reinforced resin composite material flows almost all over the bottom portion of the concave portion. The composite material covers almost the entire bottom surface of the concave part. In any case, the flow rate of the glass fiber reinforced resin composite material can be reduced while flowing between the inner surface of the concave portion and the outer surface of the convex portion after flowing into the glass fiber. The orientation in the direction can be suppressed, and the mold-clamping speed until the glass fiber reinforced resin composite material flows over almost the entire bottom surface of the concave portion is not reduced. The time required to flow to almost the entire surface of the part does not take longer than necessary, and the molding time does not become longer than necessary,
As a result, the glass fiber is prevented from being oriented in a specific direction due to the flow pressure at the time of mold clamping, and a glass fiber reinforced thermosetting resin molded product having no anisotropy in strength can be easily manufactured in a short molding time. You can do it.

【0023】また、請求項2記載の発明にあっては、ガ
ラス繊維強化樹脂複合材料を下型に設けた上方に開口し
た凹型部内にセットし、この下型と下方に突出した凸型
部を有する上型とを型締めして凹型部と凸型部との間に
形成されるキャビティ内にガラス繊維強化樹脂複合材料
を充填してガラス繊維強化熱硬化性樹脂成形品を製造す
るに当たり、ガラス繊維強化樹脂複合材料として粘度の
異なる複数種類のガラス繊維強化樹脂複合材料を重ねて
凹型部内にセットし、その後型締めするので、型締めす
るとガラス繊維強化樹脂複合材料のうちまず粘度の低い
ガラス繊維強化樹脂複合材料が先に潰され、先に潰され
た粘度の低いガラス繊維強化樹脂複合材料の外周部が3
次元的に流動してガラス繊維の配向が抑えられ、更に、
先に潰された粘度の低いガラス繊維強化樹脂複合材料の
外周部が3次元的に流動して粘度の高いガラス繊維強化
樹脂複合材料の外周を包み込み、この状態で粘度の高い
ガラス繊維強化樹脂複合材料も徐々に潰されていって粘
度の高いガラス繊維強化樹脂複合材料と粘度の低いガラ
ス繊維強化樹脂複合材料とが混じり合いながら流動する
ことで粘度の低いガラス繊維強化樹脂複合材料のガラス
繊維と粘度の高いガラス繊維強化樹脂複合材料のガラス
繊維が特定方向に配向するのを抑えることができ、この
結果、型締め時における流動圧によりガラス繊維が特定
方向に配向するのを抑え、強度に異方性が生じないガラ
ス繊維強化熱硬化性樹脂成形品を簡単に製造することが
できるものである。
According to the second aspect of the present invention, the glass fiber reinforced resin composite material is set in an upwardly opened concave portion provided in the lower die, and the lower die and the downwardly projecting convex portion are set. In producing a glass fiber reinforced thermosetting resin molded product by filling a glass fiber reinforced resin composite material into a cavity formed between the concave part and the convex part by clamping the upper mold having As a fiber reinforced resin composite material, a plurality of types of glass fiber reinforced resin composite materials having different viscosities are stacked and set in a concave portion, and then the mold is clamped. The reinforced resin composite material is crushed first, and the outer periphery of the previously crushed low-viscosity glass fiber reinforced resin composite material is 3
It flows dimensionally, the orientation of the glass fiber is suppressed, and
The outer periphery of the previously crushed low-viscosity glass fiber reinforced resin composite material flows three-dimensionally and wraps around the outer periphery of the high-viscosity glass fiber reinforced resin composite material. The material is gradually crushed and the glass fiber reinforced resin composite material with low viscosity is mixed with the glass fiber reinforced resin composite material with high viscosity and the glass fiber reinforced resin composite material with low viscosity. The glass fibers of the glass fiber reinforced resin composite material having a high viscosity can be prevented from being oriented in a specific direction, and as a result, the glass fibers are prevented from being oriented in a specific direction due to the flow pressure at the time of mold clamping, and the strength is different. A glass fiber reinforced thermosetting resin molded product that does not cause anisotropy can be easily manufactured.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の一実施形態のガラス繊維強化樹脂複合
材料を下型の凹型部内にセットした状態の説明図であ
る。
FIG. 1 is an explanatory view showing a state in which a glass fiber reinforced resin composite material according to an embodiment of the present invention is set in a lower mold concave portion.

【図2】同上の型締め順序を示す説明図である。FIG. 2 is an explanatory view showing a mold clamping order according to the first embodiment.

【図3】本発明の他の実施形態のガラス繊維強化樹脂複
合材料を下型の凹型部内にセットした状態の説明図であ
る。
FIG. 3 is an explanatory view of a state in which a glass fiber reinforced resin composite material according to another embodiment of the present invention is set in a concave portion of a lower die.

【図4】同上の重ねてセットした粘度の低いガラス繊維
強化樹脂複合材料と粘度の高いガラス繊維強化樹脂複合
材料との上下型内における型締めによる圧縮力を受けた
際の流れの説明図である。
FIG. 4 is an explanatory diagram of a flow when a compressive force is applied to the upper and lower molds of the low-viscosity glass fiber-reinforced resin composite material and the high-viscosity glass fiber-reinforced resin composite material in the upper and lower dies. is there.

【符号の説明】[Explanation of symbols]

1 ガラス繊維強化樹脂複合材料 1a 粘度の低いガラス繊維強化樹脂複合材料 1b 粘度の高いガラス繊維強化樹脂複合材料 2 下型 3 凹型部 4 凸型部 5 上型 DESCRIPTION OF SYMBOLS 1 Glass fiber reinforced resin composite material 1a Glass fiber reinforced resin composite material with low viscosity 1b Glass fiber reinforced resin composite material with high viscosity 2 Lower mold 3 Concave part 4 Convex part 5 Upper mold

───────────────────────────────────────────────────── フロントページの続き (72)発明者 小早川 益律 大阪府門真市大字門真1048番地松下電工株 式会社内 Fターム(参考) 4F202 AA36 AB25 AR08 CA09 CB01 CL01 4F204 AA41 AD16 AR08 FA01 FB01 FN11  ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Masitsu Kobayakawa 1048 Kazuma Kadoma, Kadoma City, Osaka Prefecture F-term in Matsushita Electric Works, Ltd. (reference) 4F202 AA36 AB25 AR08 CA09 CB01 CL01 4F204 AA41 AD16 AR08 FA01 FB01 FN11

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 ガラス繊維強化樹脂複合材料を下型に設
けた上方に開口した凹型部内にセットし、この下型と下
方に突出した凸型部を有する上型とを型締めして凹型部
と凸型部との間に形成されるキャビティ内にガラス繊維
強化樹脂複合材料を充填してガラス繊維強化熱硬化性樹
脂成形品を製造するに当たり、ガラス繊維強化樹脂複合
材料が凹型部の底面部のほぼ全面に流れるまでの型締め
速度よりも、ガラス繊維強化樹脂複合材料が凹型部の底
面部のほぼ全面に流れた後に凹型部の内面と凸型部の外
面との間を流れる際の型締め速度を遅くすることを特徴
とするガラス繊維強化熱硬化性樹脂成形品の製造方法。
1. A glass fiber reinforced resin composite material is set in an upwardly opened concave portion provided on a lower die, and the lower die and an upper die having a downwardly projecting convex portion are clamped to form a concave portion. In manufacturing a glass fiber reinforced thermosetting resin molded product by filling a glass fiber reinforced resin composite material into a cavity formed between the convex portion and the glass fiber reinforced resin composite material, the glass fiber reinforced resin composite material is filled with a bottom portion of the concave portion. The mold when the glass fiber reinforced resin composite material flows between the inner surface of the concave portion and the outer surface of the convex portion after the glass fiber reinforced resin composite material flows over almost the entire bottom surface of the concave portion A method for producing a glass fiber reinforced thermosetting resin molded product, characterized in that a fastening speed is reduced.
【請求項2】 ガラス繊維強化樹脂複合材料を下型に設
けた上方に開口した凹型部内にセットし、この下型と下
方に突出した凸型部を有する上型とを型締めして凹型部
と凸型部との間に形成されるキャビティ内にガラス繊維
強化樹脂複合材料を充填してガラス繊維強化熱硬化性樹
脂成形品を製造するに当たり、ガラス繊維強化樹脂複合
材料として粘度の異なる複数種類のガラス繊維強化樹脂
複合材料を重ねて凹型部内にセットし、その後型締めす
ることを特徴とするガラス繊維強化熱硬化性樹脂成形品
の製造方法。
2. A glass fiber reinforced resin composite material is set in an upwardly opened concave portion provided in a lower die, and the lower die and an upper die having a downwardly projecting convex portion are clamped to form a concave portion. In manufacturing a glass fiber reinforced thermosetting resin molded product by filling a glass fiber reinforced resin composite material into a cavity formed between the glass fiber reinforced resin composite material and a plurality of types having different viscosities as the glass fiber reinforced resin composite material A method for producing a glass fiber reinforced thermosetting resin molded article, comprising stacking the glass fiber reinforced resin composite materials described above, setting them in a concave portion, and then closing the mold.
JP2000224675A 2000-07-26 2000-07-26 Manufacturing method of glass fiber reinforced thermosetting resin molded product Expired - Fee Related JP3700552B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000224675A JP3700552B2 (en) 2000-07-26 2000-07-26 Manufacturing method of glass fiber reinforced thermosetting resin molded product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000224675A JP3700552B2 (en) 2000-07-26 2000-07-26 Manufacturing method of glass fiber reinforced thermosetting resin molded product

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JP2002036275A true JP2002036275A (en) 2002-02-05
JP3700552B2 JP3700552B2 (en) 2005-09-28

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2502656A (en) * 2012-05-30 2013-12-04 Gurit Uk Ltd Press moulding method controlling resin pressure to reduce resin bleed out

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2502656A (en) * 2012-05-30 2013-12-04 Gurit Uk Ltd Press moulding method controlling resin pressure to reduce resin bleed out
GB2502653A (en) * 2012-05-30 2013-12-04 Gurit Uk Ltd Press moulding method comprising progressive closing of mould tool
GB2502656B (en) * 2012-05-30 2015-11-04 Gurit Uk Ltd Press moulding method
GB2502653B (en) * 2012-05-30 2015-11-04 Gurit Uk Ltd Press moulding method

Also Published As

Publication number Publication date
JP3700552B2 (en) 2005-09-28

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