JPS59104909A - Method for hardening composite material - Google Patents
Method for hardening composite materialInfo
- Publication number
- JPS59104909A JPS59104909A JP57214642A JP21464282A JPS59104909A JP S59104909 A JPS59104909 A JP S59104909A JP 57214642 A JP57214642 A JP 57214642A JP 21464282 A JP21464282 A JP 21464282A JP S59104909 A JPS59104909 A JP S59104909A
- Authority
- JP
- Japan
- Prior art keywords
- viscosity
- resin
- curing
- composite material
- pressure
- 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
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は複合材料の硬化方法に関し、詳しく番ま樹脂を
含浸させた繊維からなる複合材料をモールド上で巻回し
つつ成形するフィラメントワインディング法におい−Ｃ
１樹脂の温度−粘度曲線から粘度低下領域を知り、特定
の粘度領域で硬化圧力を加えることを特徴とし、従来の
複合材料の欠陥部であるボイドを減少し、マトリックス
レジンのフローをコントロールするものであり、フィラ
メントワインディング法の加工方法として利用できる複
合材料の硬化方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of curing a composite material, and more specifically, a filament winding method in which a composite material made of fibers impregnated with a resin is formed by winding it on a mold.
1. It is characterized by knowing the viscosity reduction region from the temperature-viscosity curve of the resin and applying curing pressure in a specific viscosity region, reducing voids that are defects in conventional composite materials and controlling the flow of matrix resin. The present invention relates to a method for curing composite materials that can be used as a processing method for filament winding.
従来の複合材の硬化り法としては、オーブン硬化、オー
トクレーブ硬化等があり、オーブン硬化はフィシメン１
−ワインディング法、ハンドレイアップ法等の成型品を
硬化する際に実施され、オートクレーブ硬化はプリプレ
グの積層板、ハニカムコアのサンドイッチパネル等を成
型する際に実施されていた。オーブン硬化の欠点として
は、レジンフローのコン１へロールができず、またボイ
ドを減少することが困難なこと、またレジンフローがコ
ン１〜ロールされていないプリプレグを使用したオー１
−・クレープ硬化の欠点としては、昇温中に硬化圧力で
マトリックスレジンが流れてしまい、複合材料中のレジ
ン量をコントロールすることができない等の欠点があっ
た。Conventional curing methods for composite materials include oven curing and autoclave curing.
- It was used when curing molded products such as the winding method and hand lay-up method, and autoclave curing was used when molding prepreg laminates, honeycomb core sandwich panels, etc. Disadvantages of oven curing include the inability to roll the resin flow to con 1 and the difficulty in reducing voids, and the difficulty in reducing the resin flow to con 1 to oven curing using unrolled prepreg.
- Disadvantages of crepe curing include the fact that the matrix resin flows due to the curing pressure during temperature rise, making it impossible to control the amount of resin in the composite material.
本発明は、複合材を硬化する際、レジンフローをコン１
〜ロールし、かつボイドを減少させることを可能とした
複合材料の硬化方法を提供することを目的どし、特にフ
ィラメントワインディング法の硬化方法として利用され
る。The present invention controls resin flow when curing composite materials.
The purpose is to provide a method for curing composite materials that can be rolled and reduce voids, and is particularly used as a curing method for filament winding.
本発明者等はこの目的に治って鋭意研究の結果、複合材
料７１〜リツクスレジンの硬化過程において粘匪挙動を
知り、圧力を加える時期により小イドの多少ａ５よびレ
ジンフローが変化づる事実を見い出し、もっとも好まし
い過程に圧力をかけることにより、レジンフローをコン
トロールし、がっボイドを減少させることが可能になる
ことを知見して本発明に至った。The present inventors pursued this objective and as a result of intensive research, they learned about the viscosity behavior during the curing process of Composite Material 71 ~ Rix Resin, and discovered that the a5 of the small id and the resin flow change somewhat depending on the timing of applying pressure. The present invention was developed based on the discovery that by applying pressure to the most favorable process, it is possible to control resin flow and reduce voids.
すなわち本発明は、
樹脂を含浸させた繊維材料をモールド上にて巻回、成形
し、得られた成形品を加圧下に加熱、硬化させる複合材
料の製造ノ）法に際し、樹脂の室温における粘度を１０
０％とし、加熱によって示す最低粘度を０％としたとき
、該成形品が加熱により最低粘度を示した後に、前記室
温における粘度の５〜１５％粘度が増加したときに加圧
開始することを特徴とする複合材料の硬化方法にある。That is, the present invention provides a composite material manufacturing method in which a resin-impregnated fiber material is wound and molded on a mold, and the resulting molded product is heated and cured under pressure. 10
When the minimum viscosity shown by heating is 0%, pressurization is started when the viscosity increases by 5 to 15% of the viscosity at room temperature after the molded product shows the minimum viscosity by heating. The main feature lies in the curing method of composite materials.
以下、本発明を第１図に基づいて具体的に説明する。第
１図は、７１〜リツクスレジンの温度−粘度曲線であり
、あらかじめこのレジンの温度−粘度曲線から粘度低下
領域を求める。この第１図に示されるごとく、マトリッ
クスレジンは硬化過程において次のどどき４段階の粘度
挙動を示す。Hereinafter, the present invention will be specifically explained based on FIG. 1. FIG. 1 shows the temperature-viscosity curve of 71-Rix resin, and the viscosity reduction region is determined in advance from the temperature-viscosity curve of this resin. As shown in FIG. 1, the matrix resin exhibits viscosity behavior in four stages during the curing process:
第１段階：昇温による粘度低下、 第２段階：融解による最低粘度、 第３段階：硬化反応開始による粘度増加、ａ５よび 第４段階：架橋反応による高粘度 である。1st stage: Viscosity decrease due to temperature increase, 2nd stage: minimum viscosity due to melting, 3rd stage: viscosity increase due to initiation of curing reaction, a5 and 4th stage: High viscosity due to crosslinking reaction It is.
本発明は硬化反応開始による粘度増加が起こる第３段階
において圧力を加え、ボイドおよびレジンフローをコン
ｌ−ロールするものである。In the present invention, pressure is applied in the third stage when the viscosity increases due to the initiation of the curing reaction to control voids and resin flow.
第３段階の圧力を加える時期とは、室温の粘度を１００
％、最低粘倹を０％としたときの最低粘度を過ぎてから
５〜１５％の粘度域である。この粘度域で圧力を加える
と、フィラメントワインディング法によって成形中に含
まれた空気はマトリックスレジンよりも流動しやすく、
外へ押し出され、複合材中のボイドは減少する。また５
〜１５％の粘度域でマ］・リックスレジンのヒーステー
ジ（Ｂｓｔａｇｅ ’）化が進みフローがコントロール
される。The timing to apply pressure in the third stage is to reduce the viscosity at room temperature to 100
%, and the viscosity range is 5 to 15% after passing the minimum viscosity when the minimum viscosity is 0%. When pressure is applied in this viscosity range, the air contained during molding by the filament winding method flows more easily than matrix resin.
The voids in the composite are reduced as they are pushed out. Also 5
In the viscosity range of ~15%, the heat stage (Bstage') of Matrix resin progresses and the flow is controlled.
融解による最低粘度である第２段階、ずなわら粘度の増
加が５％未満の段階で圧力を加えると、７１ヘリツタス
レジンはフローしやづくフィシメン１−ワイディング成
形中に含まれる空気と共に７１〜リツクスレジンは流動
し、硬化した複合材はボイドが多く、７０−コン１−ロ
ールができない。When pressure is applied during the second stage, which is the lowest viscosity due to melting, and the increase in viscosity is less than 5%, 71 Heritus Resin tends to flow. flows, and the cured composite has many voids and cannot be rolled.
また、架橋反応による高粘度の状態にある第４段階、す
なわち粘度が１５％を越えて増加した段階で圧力を加え
ると複合材中のボイドが大幅に増加してしまい好ましく
ない。Furthermore, if pressure is applied at the fourth stage when the viscosity is in a high viscosity state due to the crosslinking reaction, that is, at the stage when the viscosity has increased by more than 15%, the voids in the composite material will increase significantly, which is not preferable.
本発明において使用される樹脂としてはフェノール樹脂
ヤ土ボキシ樹脂等が例示される。また、繊維としては、
特に制限はないが、植物＃ｌｉＮ、動物繊維等の天然繊
維、半合成繊組、合成繊維等の化学繊維が使用されるが
、強度等の特性から合成ｍ維が好ましい。Examples of the resin used in the present invention include phenolic resin, clay boxy resin, and the like. In addition, as a fiber,
Although there are no particular limitations, natural fibers such as plant #liN and animal fibers, and chemical fibers such as semi-synthetic fibers and synthetic fibers may be used, but synthetic fibers are preferred from the viewpoint of strength and other characteristics.
以上説明のごとく、７１〜リツクスレジンのあらかじめ
温度・粘度曲線を知り、最低粘度を過ぎてから５〜１５
％粘度増加したときに圧力をかける本発明の複合材料の
硬化方法は、複合材中のボイドを減少し、マトリックス
レジンのフローをコン１〜ロールできるという利点があ
るので、樹脂を含浸させた繊維をモールド−［で巻回し
つつ成形するフィラメントワインディング成形法【こお
いて、好適に利用される。As explained above, know the temperature and viscosity curve of 71~Rix resin in advance, and after passing the minimum viscosity, 5~15
The method of curing composite materials of the present invention, which applies pressure when the viscosity increases by %, has the advantage of reducing voids in the composite and controlling the flow of the matrix resin, so that the resin-impregnated fibers can be cured easily. The filament winding molding method, in which the filament is wound and formed in a mold, is preferably used.
第１図は、マトリックスレジンの温度−粘度曲線である
。FIG. 1 is a temperature-viscosity curve of matrix resin.
Claims (1)
し、得られた成形品を加圧下に加熱、硬化させる複合材
料の製造り法に際し、樹脂の室温における粘度を１００
％とし、加熱によって示す最低粘度を０％としｌことき
、該成形品が加熱により最低粘度を示した後に、前記空
温における粘度の５〜１５％粘度が増加したどきに加圧
を開始することを特徴とづる複合材料の硬化方法。In a composite material manufacturing method in which a fiber material impregnated with resin is wound and molded on a mold, and the resulting molded product is heated and cured under pressure, the viscosity of the resin at room temperature is set to 100
%, and the minimum viscosity shown by heating is 0%, and after the molded product shows the minimum viscosity by heating, pressurization is started when the viscosity increases by 5 to 15% of the viscosity at the air temperature. A method for curing composite materials characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57214642A JPS59104909A (en) | 1982-12-09 | 1982-12-09 | Method for hardening composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57214642A JPS59104909A (en) | 1982-12-09 | 1982-12-09 | Method for hardening composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59104909A true JPS59104909A (en) | 1984-06-18 |
Family
ID=16659127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57214642A Pending JPS59104909A (en) | 1982-12-09 | 1982-12-09 | Method for hardening composite material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59104909A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0424076A2 (en) * | 1989-10-16 | 1991-04-24 | Thiokol Corporation | Chemorheologically tailored matrix resin formulations and their use in making pre-impregnated fibers and in fabricating composite parts |
| JP2016107408A (en) * | 2014-12-02 | 2016-06-20 | トヨタ自動車株式会社 | Method of manufacturing high pressure tank |
-
1982
- 1982-12-09 JP JP57214642A patent/JPS59104909A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0424076A2 (en) * | 1989-10-16 | 1991-04-24 | Thiokol Corporation | Chemorheologically tailored matrix resin formulations and their use in making pre-impregnated fibers and in fabricating composite parts |
| JP2016107408A (en) * | 2014-12-02 | 2016-06-20 | トヨタ自動車株式会社 | Method of manufacturing high pressure tank |
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