JP2586629B2 - Method for producing composite laminate - Google Patents
Method for producing composite laminateInfo
- Publication number
- JP2586629B2 JP2586629B2 JP1018484A JP1848489A JP2586629B2 JP 2586629 B2 JP2586629 B2 JP 2586629B2 JP 1018484 A JP1018484 A JP 1018484A JP 1848489 A JP1848489 A JP 1848489A JP 2586629 B2 JP2586629 B2 JP 2586629B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- composite laminate
- pressure
- prepreg
- minutes
- 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.)
- Expired - Fee Related
Links
- 239000002131 composite material Substances 0.000 title claims description 22
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000011347 resin Substances 0.000 claims description 26
- 229920005989 resin Polymers 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 13
- 239000002648 laminated material Substances 0.000 claims description 9
- 239000004744 fabric Substances 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 7
- 229920001187 thermosetting polymer Polymers 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 238000010030 laminating Methods 0.000 description 6
- 238000003825 pressing Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、そりが少なく、しかも板厚偏差が少ない優
れたコンポジット積層板の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for producing an excellent composite laminate having a small warpage and a small thickness deviation.
〔従来の技術〕 一般にコンポジット積層板は、紙基材にフェノール、
エポキシ、不飽和ポリエステル、ポリアミド等の熱硬化
性樹脂を含浸したプリプレグを必要枚数重ね合わせ、そ
の両面にガラス布に上記プリプレグと同種の樹脂を含浸
したプリプレグを１枚ずつ重ね合わせてなるコンポジッ
ト積層材を加熱加圧成形して製造する。その概要を説明
する第２図において、プレスの上下熱板１の間に、熱板
に近い側から順次鉄板２、クッション材３、鏡板４、コ
ンポジット積層材５、鏡板４と、図示の如く繰返し重ね
て積層効率を良くする。[Prior art] In general, composite laminates have phenol,
A composite laminate made by laminating the required number of prepregs impregnated with a thermosetting resin such as epoxy, unsaturated polyester, or polyamide, and laminating prepregs impregnated with a resin of the same type as the prepreg on a glass cloth on each side. Is produced by heating and pressing. In FIG. 2 for explaining the outline, between the upper and lower hot plates 1 of the press, an iron plate 2, a cushion material 3, a head plate 4, a composite laminated material 5, a head plate 4 are sequentially repeated from the side close to the hot plate as shown in the figure. Stacking improves the stacking efficiency.
このコンポジット積層板の製造においては、積層板の
板厚偏差、ボイド及びかすれが多いことが従来の欠点で
あるが、その解決のために特公昭63−7930に記載されて
いるように、プレス熱板間の圧力を熱板側積層材の樹脂
が溶融し始めた時は低圧とし、中間の積層材の樹脂が溶
融していくにつれて次第に高圧とし、その後最終段階の
圧を維持する方法がある。In the production of this composite laminate, the conventional drawback is that the laminate has many deviations in thickness, voids and blurring.To solve the problem, as described in JP-B-63-7930, press heat is used. There is a method in which the pressure between the plates is set to a low pressure when the resin of the hot plate-side laminated material starts to melt, gradually increased as the resin of the intermediate laminated material melts, and then maintained at the final stage.
しかし、特公昭63−7930の方法は、同じ基材を用いて
樹脂を含浸積層する場合には有効であるが、紙基材とガ
ラス布基材に樹脂を含浸するプリプレグを構成するコン
ポジット積層板では、そりと板厚偏差を生ずる問題があ
る。However, the method of Japanese Patent Publication No. 63-7930 is effective when the resin is impregnated and laminated using the same base material, but the composite laminate constituting the prepreg in which the paper base material and the glass cloth base material are impregnated with the resin is used. Then, there is a problem that warpage and thickness deviation occur.
すなわち、同種の樹脂を紙基材とガラス布基材に含浸
して得たプリプレグを同じ積層条件で加熱加圧する場
合、積層板外周端面からの樹脂流出は、ガラス布基材含
浸樹脂が紙基材含浸樹脂に比べて遥かに多い。したがっ
て、これ等２種類の基材に樹脂を含浸したプリプレグか
ら成るコンポジット積層板を成形する時は、樹脂流出量
が異なるためにそりを生じ、樹脂流出量が大きいと板厚
偏差が大きくなる。That is, when a prepreg obtained by impregnating a paper base material and a glass cloth base material with the same type of resin is heated and pressed under the same lamination conditions, the resin outflow from the outer peripheral end face of the laminated board is caused by the glass cloth base material impregnated resin being the paper base. It is much more than the material impregnated resin. Therefore, when forming a composite laminate made of a prepreg in which these two types of base materials are impregnated with a resin, warpage occurs due to differences in the amount of resin flowing out, and when the amount of resin flowing out is large, the plate thickness deviation increases.
本発明は、そり及び板厚偏差が少ないコンポジット積
層板の製造方法を提供することを目的とする。An object of the present invention is to provide a method for producing a composite laminate having a small warpage and a small thickness deviation.
本発明は、コンポジット積層材を加熱加圧成形する時
に、熱板側のプリプレグ樹脂が溶融しさらに中間側のプ
リプレグ樹脂が溶融して熱硬化が始まるまでは５〜25kg
/cm2で特定時間加圧し、その後30〜60kg/cm2の加圧を維
持する製造方法である。The present invention provides a method for heating and pressing a composite laminate, in which the prepreg resin on the hot plate side is melted, and the prepreg resin on the intermediate side is further melted and heat-cured until the start of thermosetting.
/ cm 2 for a specific time, and then maintain the pressure of 30-60 kg / cm 2 .
第１図は、本発明の積層条件すなわちプレス圧と加熱
加圧時間の関係が上記範囲内にある実施例（Ａ）（Ｂ）
（Ｃ）を示すもので、積層材のプレス熱板間での重ね方
は第２図に示すと同じである。FIG. 1 shows examples (A) and (B) in which the laminating conditions of the present invention, that is, the relationship between the pressing pressure and the heating and pressing time is within the above range.
(C) is shown, and the way of laminating the laminated materials between the press hot plates is the same as shown in FIG.
初期低圧段階で10kg/cm2の時、そりの発生が少なく板
厚偏差も少なく良好である。5kg/cm2より低圧では積層
材の挿入位置によって板厚が異なり、逆に25kg/cm2より
大きいとそりが大きく板厚偏差も大きい。When the pressure is 10 kg / cm 2 at the initial low pressure stage, warpage is small and the thickness deviation is good with good results. When the pressure is lower than 5 kg / cm 2 , the sheet thickness varies depending on the insertion position of the laminated material. Conversely, when the pressure is higher than 25 kg / cm 2 , the warpage is large and the sheet thickness deviation is large.
次に、高圧段階で30〜60kg/cm2とすると、そり、板厚
偏差とも良好である。30kg/cm2未満ではボイド、かすれ
が発生し、逆に60kg/cm2を超えるとそり、板厚偏差の何
れも大きい。Next, when the pressure is set to 30 to 60 kg / cm 2 in the high pressure stage, the warpage and the thickness deviation are good. If it is less than 30 kg / cm 2 , voids and blurring will occur. Conversely, if it exceeds 60 kg / cm 2 , warpage and sheet thickness deviation will both be large.
したがって、そりと板厚偏差の何れも少ないコンポジ
ット積層板を製造するためには、上記の本発明の方法に
依ると優れた結果を得る。Therefore, in order to produce a composite laminate having both a small warpage and a small thickness deviation, excellent results are obtained according to the above-described method of the present invention.
コンポジット積層板は、紙基材及びガラス布基材各プ
リプレグの溶融時における樹脂流出量の差が小さいとそ
りは少なく板厚偏差も少ない。逆に大きいとそり、板厚
偏差共に大きい。従来、コンポジット積層板における樹
脂流出量は大きいが、本発明の方法によって、低圧段階
で５〜25kg/cm2とすると樹脂流出量差が少ない。The composite laminate has a small warpage and a small thickness deviation when the difference in the resin outflow during the melting of the prepreg of each of the paper base material and the glass cloth base material is small. Conversely, if it is large, warpage and thickness deviation are both large. Conventionally, the resin outflow from the composite laminate is large, but the difference in the resin outflow is small when the pressure is reduced to 5 to 25 kg / cm 2 by the method of the present invention.
さらに高圧段階で30〜60kg/cm2とすると、プリプレグ
からの樹脂流出が少量あるためにボイド、かすれは少な
く、また樹脂流出量が少ないためそりが少なく板厚偏差
も少ない。Further, when the pressure is 30 to 60 kg / cm 2 at the high pressure stage, voids and blurring are small due to a small amount of resin flowing out of the prepreg, and warpage is small and a thickness deviation is small due to a small amount of resin flowing out.
本発明の実施例を次に述べる。エポキシ積層板用樹脂
（DER5IIダウケミカル社製を主成分とする）をリンター
紙に含浸したプリプレグＩを得た。さらに、ガラス布に
同じ樹脂を含浸してプリプレグIIを得た。プリプレグＩ
を５枚重ね、その両面にプリプレグIIを１枚ずつ重ねて
板厚1.6mmのコンポジット積層板を作るために、第１図
に示す（Ａ）（Ｂ）（Ｃ）の３実施例を行った。熱板間
のコンポジット積層材の挿入組数を10組でプレスした。
積層条件は、170℃、90分とし、この時間内に圧力と時
間関係を第１図に示すように（Ａ）（Ｂ）（Ｃ）の３実
施例とした。すなわち、（Ａ）は加熱開始から15分間を
20kg/cm2とし、その後30kg/cm2とし90分まで保った。
（Ｂ）は加熱開始から18分間を5kg/cm2とし、その後50k
g/cm2とし90分まで保った。（Ｃ）は加熱開始から20分
間を10kg/cm2とし、その後40kg/cm2とし90分まで保っ
た。得たコンポジット積層板のそり、板厚偏差、外観を
評価した。板厚偏差は、板内中央部板厚と外周部板厚と
の差（mm）とし、そりの試料サイズは250×500mmとし、
結果を表１に示す。An embodiment of the present invention will be described below. A prepreg I obtained by impregnating linter paper with a resin for an epoxy laminate (DER5II manufactured by Dow Chemical Co., Ltd. as a main component) was obtained. Further, the same resin was impregnated in a glass cloth to obtain a prepreg II. Prepreg I
In order to form a composite laminate having a thickness of 1.6 mm by laminating five sheets of prepreg II one on each side, three examples (A), (B) and (C) shown in FIG. 1 were carried out. . The number of inserts of the composite laminate between the hot plates was pressed at 10.
The laminating conditions were 170 ° C. and 90 minutes, and within this time, the relationship between the pressure and the time was as shown in FIG. 1 in three examples (A), (B) and (C). That is, (A) is for 15 minutes from the start of heating.
The pressure was set to 20 kg / cm 2, and then to 30 kg / cm 2 and maintained for 90 minutes.
(B) is 5 kg / cm 2 for 18 minutes from the start of heating, then 50 k
g / cm 2 and kept for up to 90 minutes. (C) was 10 kg / cm 2 for 20 minutes from the start of heating, and then 40 kg / cm 2 and kept for 90 minutes. The warpage, thickness deviation, and appearance of the obtained composite laminate were evaluated. The sheet thickness deviation is the difference (mm) between the sheet thickness at the center part inside the sheet and the sheet thickness at the outer part, and the sample size of the sled is 250 × 500 mm.
Table 1 shows the results.
実施例との比較のために従来の方法例を次に示す。実
施例と同様にして得たプリプレグＩとプリプレグIIを実
施例と同じコンポジット積層材を得た。これをプレス熱
板間に実施例と同じ条件で組重ね、170℃90分加熱加圧
しが、加圧と時間関係を従来方式で（Ｄ）（Ｅ）（Ｆ）
の３例を行った。これを第３図に示すように、（Ｄ）は
加熱開始から15分間を10kg/cm2とし、その後80kg/cm2と
して90分まで保った。（Ｅ）は加熱開始から10分間を20
kg/cm2とし、さらに25分後に60kg/cm2とし、その状態で
90分まで保った。（Ｆ）は加熱開始から90分まで40kg/c
m2とした。An example of a conventional method is shown below for comparison with the embodiment. From prepreg I and prepreg II obtained in the same manner as in the example, the same composite laminate as in the example was obtained. This was assembled between press hot plates under the same conditions as in the example, and heated and pressurized at 170 ° C for 90 minutes. The relationship between pressurization and time was determined by the conventional method (D) (E) (F)
Were performed. As shown in FIG. 3, in FIG. 3 (D), 15 minutes from the start of heating was set to 10 kg / cm 2, and then to 80 kg / cm 2 and kept for 90 minutes. (E) 20 minutes for 10 minutes from the start of heating
and kg / cm 2, further the 60 kg / cm 2 after 25 minutes, and in this state
Hold for up to 90 minutes. (F) is 40kg / c from the start of heating to 90 minutes
It was m 2.
得たコンポジット積層板の評価は実施例と同じ方法に
よった。結果を表２に示す。Evaluation of the obtained composite laminate was carried out by the same method as in the example. Table 2 shows the results.
〔発明の効果〕 本発明によって、そり、板厚偏差が少なく、ボイド及
びかすれのないコンポジット積層板の製造が可能となっ
た。 [Effects of the Invention] According to the present invention, it has become possible to produce a composite laminate having little warpage and thickness deviation and free from voids and blurring.
第１図は本発明の積層圧と時間関係を示すグラフ、第２
図は積層板のプレス方法断面図、第３図は従来の方法に
よる積層圧と時間関係グラフである。 １……熱板、２……鉄板、３……クッション材、４……
鏡板、５……コンポジット積層材、（Ａ），（Ｂ），
（Ｃ）……本発明実施例、（Ｄ），（Ｅ），（Ｆ）……
従来方法例。FIG. 1 is a graph showing the relationship between the lamination pressure and time according to the present invention.
FIG. 3 is a cross-sectional view of a method of pressing a laminated plate, and FIG. 1 ... hot plate 2 ... iron plate 3 ... cushion material 4 ...
End plate, 5 ... Composite laminate material, (A), (B),
(C) Examples of the present invention, (D), (E), (F).
Conventional method example.
Claims (1)
グを必要枚数重ね合わせ、その両面にガラス布に熱硬化
性樹脂を含浸したプリプレグを１枚ずつ重ね合わせた積
層材を鏡板を介して多数組上下熱板間に配置して加熱加
圧するコンポジット積層板の製造において、熱板間の圧
力を、熱板側積層材の樹脂が溶融しさらに中間側積層材
の樹脂が溶融して熱硬化が始まるまでは５〜25kg/cm2と
し、その後30〜60kg/cm2とすることを特徴とするコンポ
ジット積層板の製造方法。1. A laminated material in which a required number of prepregs in which a thermosetting resin is impregnated on a paper base material are superposed, and a prepreg in which a thermosetting resin is impregnated on a glass cloth is superposed on both sides one by one through a head plate. In the production of a composite laminate in which multiple sets of upper and lower hot plates are placed and heated and pressurized, the pressure between the hot plates is increased by melting the resin of the hot plate side laminated material and further melting the resin of the intermediate side laminated material. A method for producing a composite laminate, wherein the pressure is 5 to 25 kg / cm 2 until curing starts, and then 30 to 60 kg / cm 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1018484A JP2586629B2 (en) | 1989-01-27 | 1989-01-27 | Method for producing composite laminate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1018484A JP2586629B2 (en) | 1989-01-27 | 1989-01-27 | Method for producing composite laminate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02198813A JPH02198813A (en) | 1990-08-07 |
| JP2586629B2 true JP2586629B2 (en) | 1997-03-05 |
Family
ID=11972914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1018484A Expired - Fee Related JP2586629B2 (en) | 1989-01-27 | 1989-01-27 | Method for producing composite laminate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2586629B2 (en) |
-
1989
- 1989-01-27 JP JP1018484A patent/JP2586629B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02198813A (en) | 1990-08-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |