JP2004148732A

JP2004148732A - Apparatus for manufacturing molding of fiber-reinforced photo-hardening resin

Info

Publication number: JP2004148732A
Application number: JP2002318024A
Authority: JP
Inventors: Hiromi Ishikawa; 裕美石川; Makiko Iida; 牧子飯田; Makoto Nakajo; 誠中条; Tetsuya Nakamura; 哲也中村
Original assignee: Sakura Rubber Co Ltd
Current assignee: Sakura Rubber Co Ltd
Priority date: 2002-10-31
Filing date: 2002-10-31
Publication date: 2004-05-27

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for manufacturing a molding of a fiber-reinforced photo-hardening resin having mechanical characteristics comparable with those of current moldings of fiber-reinforced thermosetting epoxy resins in a short time without a large installation. <P>SOLUTION: The apparatus is for manufacturing a molding of a fiber-reinforced photo-hardening resin by applying light to a reinforcing fiber impregnated with a photo-hardening resin in which a reinforcing fiber is impregnated with a radical-polymerizable photo-hardening resin and has a light-transmissive die, a light-transmissive bag arranged on the pricipal surface of the die to form a tightly closed space for housing the resin-impregnated reinforcing fiber, a vacuum exhausting means attached to the bag in such a way that the bag is communicated with the closed space and light sources arranged respectively on the sides of the die and bag. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、繊維強化光硬化樹脂成形品の製造装置に関する。
【０００２】
【従来の技術】
従来、繊維強化プラスチックはガラスのような強化繊維の積層物等に熱硬化性樹脂を含浸した熱硬化性樹脂含浸強化繊維を金属型や耐熱性の樹脂型にセットし、熱硬化させることにより製造されている。
【０００３】
しかしながら、このような繊維強化プラスチックの製造にはオートクレーブ、硬化炉等の大型設備が必要になる問題があった。
【０００４】
一方、光硬化性樹脂は反応機構の相違によってラジカル重合型とカチオン重合型に大別されるが、紫外線のエネルギーを利用したラジカル重合型が主流になっている。ラジカル重合型の光硬化性樹脂は、硬化速度が速いという長所を有するものの、酸素による硬化阻害が生じる。このため、ラジカル重合型の光硬化性樹脂の用途が制限されていた。
【０００５】
【発明が解決しようとする課題】
本発明は、大型な設備を必要とせずに従来の繊維強化熱硬化エポキシ樹脂成形品と遜色のない機械的特性を有する繊維強化光硬化樹脂成形品を短時間で製造することが可能な製造装置を提供しようとするものである。
【０００６】
【課題を解決するための手段】
本発明に係る繊維強化光硬化樹脂成形品の製造装置は、強化繊維にラジカル重合型の光硬化性樹脂を含浸させた光硬化性樹脂含浸強化繊維に光を照射して繊維強化光硬化樹脂成形品を製造する装置であって、
光透過性型と、
前記光透過性型の主面に配置され、前記光硬化性樹脂含浸強化繊維が収納される密閉空間を形成するため光透過性バッグと、
前記光透過性バッグに前記密閉空間と連通するように取り付けられた真空排気手段と、
前記光透過性型および前記光透過性バッグの側にそれぞれ配置された光源と
を具備したことを特徴とするものである。
【０００７】
本発明に係る別の繊維強化光硬化樹脂成形品の製造装置は、強化繊維にラジカル重合型の光硬化性樹脂を含浸させ、光を照射して繊維強化光硬化樹脂成形品を製造する装置であって、
光透過性型と、
前記光透過性型の主面に配置され、前記強化繊維が収納されると共に、前記光硬化性樹脂が注入される密閉空間を形成するため光透過性バッグと、
前記光透過性バッグに前記密閉空間と連通するように取り付けられた光硬化性樹脂の注入手段と、
前記光透過性バッグに前記密閉空間と連通するように取り付けられた真空排気手段と、
前記光透過性型および前記光透過性バッグの側にそれぞれ配置された光源と
を具備したことを特徴とするものである。
【０００８】
【発明の実施の形態】
以下、本発明に係る繊維強化光硬化樹脂成形品の製造装置を図面を参照して詳細に説明する。
【０００９】
（第１実施形態）
図１は、この第１実施形態に係る繊維強化光硬化樹脂成形品の製造装置を示す概略図である。
【００１０】
図１中の１は、例えばポリカーボネートからなる板状の光透過性型である。例えばポリアクリル樹脂フィルムからなる光透過性バッグ２は、前記光透過性型１の主面にその主面周囲に接着された枠状シーラント材３を介して取り付けられ、前記光透過性型１と光透過性バッグ２の間に光硬化性樹脂含浸強化繊維を収納するための密閉空間４を形成している。
【００１１】
排気管５は、前記光透過性バッグ２の端部に支持部材６を介して前記密閉空間４と連通するように取り付けられている。図示しない真空ポンプは、前記排気管５に連結されている。エッジブリーダ７は、前記密閉空間４内にその中に収納される光硬化性樹脂含浸強化繊維を押圧・固定するために配置されている。
【００１２】
２つの光源、例えばメタルハライドランプ８、９は前記光透過性型１および前記光透過性バッグ２にそれぞれ対向するように配置されている。
【００１３】
なお、前記光透過性型１はポリカーボネートに代えてガラス、またはポリアクリル樹脂等の他の光透過性プラスチックから作ってもよい。
【００１４】
前記光透過性バッグ２は、ポリアクリル樹脂フィルムに代えて別の光透過性プラスチックフィルムから作ってもよい。
【００１５】
前記光源は、メタルハライドランプに代えてハロゲンランプ、キセノンランプ、水銀ランプ等を用いてもよい。
【００１６】
次に、前述した図１に示す製造装置を用いて繊維強化光硬化樹脂成形品の製造を説明する。
【００１７】
まず、強化繊維にラジカル重合型の光硬化性樹脂を含浸させた光硬化性樹脂含浸強化繊維を作製する。この光硬化性樹脂含浸強化繊維１０を光透過性型１上に下部離型紙１１を介してセットする。つづいて、エッジブリーダ７により前記光硬化性樹脂含浸強化繊維１０の上面周辺を押圧、固定した後、前記光硬化性樹脂含浸強化繊維１０上面に上部離型紙１２を配置する。ひきつづき、光透過性バッグ２を前記光透過性型１の主面にその主面周囲に接着された枠状シーラント材３を介して取り付け、前記光透過性型１と光透過性バッグ２の間に形成された密閉空間４に前記下部離型紙１１、光硬化性樹脂含浸強化繊維１０および上部離型紙１２を収納する。
【００１８】
次いで、図示しない真空ポンプを作動して前記密閉空間４内の空気を前記バッグ２の端部に支持部材６を介して取り付けられた排気管５を通して排気する。前記密閉空間４内の空気がほぼ全量排気された時点で２つのメタルハライドランプ８，９を点灯して前記光透過性型１および前記光透過性バッグ２を通して紫外線を光硬化性樹脂含浸強化繊維１０の上下面に照射する。このとき、光硬化性樹脂含浸強化繊維１０が収納される密閉空間４は空気が排気された酸素フリーの雰囲気で、その光硬化性樹脂含浸強化繊維１０の光硬化性樹脂が光硬化されて繊維強化光硬化樹脂成形品が製造される。
【００１９】
この後、前記密閉空間４内を大気圧に戻し、前記光透過性バッグ２を取り除き、繊維強化光硬化樹脂成形品を上下の離型紙１２，１１と共に取り出した後、これら離型紙１２，１１を剥離して繊維強化光硬化樹脂成形品を取り出す。
【００２０】
前記強化繊維としては、例えばガラス繊維またはガラス繊維からなる織布、不織布を用いることができる。
【００２１】
前記ラジカル重合型の光硬化性樹脂は、ａ）エステル、エーテルアクルレート、ウレタンアクルレート、エポキシアクリレート、アミノ樹脂アクリレート、アクリル樹脂アクリレート、不飽和ポリエステルなどの光重合性プレポリマー（オリゴマー）；ｂ）２−エチルヘキシルアクリレートのような一官能性、ネオペンチルグリコールジアクリレートのようなニ官能性、メリメチロールプロパントリアクリレートのような多官能性などの光重合成希釈剤（モノマー）；およびｃ）ベンゾエーテル系などの光重合開始剤を主たる成分とする。
【００２２】
以上、第１実施形態の製造装置によれば光透過性型１と光透過性バッグ２の間に形成された密閉空間４に光硬化性樹脂含浸強化繊維をセットした状態でその中の空気を排気して酸素フリーの雰囲気で、光源である２つのメタルハライドランプ８，９からの紫外線照射により前記光硬化性樹脂含浸強化繊維のラジカル重合型の光硬化性樹脂を光硬化することができる。その結果、ラジカル重合型の光硬化性樹脂を酸素による光硬化反応阻害を受けることなく、安定かつ短時間で硬化できるため、繊維強化熱硬化エポキシ樹脂成形品と遜色のない引張特性、曲げ特性を有する繊維強化光硬化樹脂成形品を製造することができる。
【００２３】
また、第１実施形態の製造装置はオートクレーブ、硬化炉等の大型設備が不要であるため、小型化、低コスト化を実現できる。
【００２４】
（実施例１）
まず、ガラスクロス（鐘紡社製商品名；ＫＳ１５８１）を６層重ね、このガラスクロス積層物をラジカル重合型の光硬化性樹脂であるビニルエステル樹脂（昭和高分子社製商品名；ＬＣ−７２０）に浸漬して含浸させ、ガラスクロス：ビニルエステル樹脂の重量比率が６０：４０のビニルエステル樹脂含浸ガラスクロス積層物を作製した。
【００２５】
次いで、前述した図１に示す製造装置を用い、前記ビニルエステル樹脂含浸ガラスクロス積層物を２枚の剥離紙に挟んで光透過性型１と光透過性バッグ２の間に形成した密閉空間４内に収納し、図示しない真空ポンプを作動して前記密閉空間４内の空気を前記バッグ２の端部に支持部材６を介して取り付けられた排気管５を通して排気し、前記密閉空間４内の空気がほぼ全量排気された時点で２つのメタルハライドランプ８，９を点灯して前記光透過性型１および前記光透過性バッグ２を通して紫外線をビニルエステル樹脂含浸ガラスクロス積層物の上下面に１０分間照射することにより６層ガラスクロス強化ビニルエステル樹脂成形品を製造した。
【００２６】
得られた実施例１の６層ガラスクロス強化ビニルエステル樹脂成形品をＪＩＳＫ７０５４の引張試験に従って引張強度およびこの引張強度から計算される引張弾性率を求めた。その結果、実施例１の成形品は引張強度が２４．５ｋｇｆ／ｍｍ^２、引張弾性率が１７００ｋｇｆ／ｍｍ^２の値を示し、６層ガラスクロス強化熱硬化エポキシ樹脂成形品の引張強度が２５．６ｋｇｆ／ｍｍ^２、引張弾性率が１９００ｋｇｆ／ｍｍ^２と遜色のない引張特性を有することが確認された。
【００２７】
（実施例２）
ガラスクロス（鐘紡社製商品名；ＫＳ１５８１）を８層重ね、このガラスクロス積層物をラジカル重合型の光硬化性樹脂であるビニルエステル樹脂（昭和高分子社製商品名；ＬＣ−７２０）に浸漬して含浸させて作製したガラスクロス：ビニルエステル樹脂の重量比率が６０：４０のビニルエステル樹脂含浸ガラスクロス積層物を用い、かつ２つのメタルハライドランプ８，９からの紫外線の照射時間を１０分間にした以外、実施例１と同様な方法により８層ガラスクロス強化ビニルエステル樹脂成形品を製造した。
【００２８】
得られた実施例２の８層ガラスクロス強化ビニルエステル樹脂成形品をＡＳＴＭＤ７９０の曲げ試験に従って曲げ強度およびこの曲げ強度から計算される曲げ弾性率を求めた。その結果、実施例２の成形品は曲げ強度が２１．４ｋｇｆ／ｍｍ^２、曲げ弾性率が１７５０ｋｇｆ／ｍｍ^２の値を示し、８層ガラスクロス強化熱硬化エポキシ樹脂成形品の曲げ強度が２４．３ｋｇｆ／ｍｍ^２、曲げ弾性率が１８００ｋｇｆ／ｍｍ^２と遜色のない曲げ特性を有することが確認された。
【００２９】
（実施例３）
まず、ガラスクロス（鐘紡社製商品名；ＫＳ１５８１）を６層重ね、このガラスクロス積層物をラジカル重合型の光硬化性樹脂であるエポキシ樹脂（ダウ・ケミカル社製商品名；ＵＶＲ−６１１０）に浸漬して含浸させ、ガラスクロス：エポキシ樹脂の重量比率が６０：４０のエポキシ樹脂含浸ガラスクロス積層物を作製した。
【００３０】
次いで、前述した図１に示す製造装置を用い、前記エポキシ樹脂含浸ガラスクロス積層物を２枚の剥離紙に挟んで光透過性型１と光透過性バッグ２の間に形成した密閉空間４内に収納し、図示しない真空ポンプを作動して前記密閉空間４内の空気を前記バッグ２の端部に支持部材６を介して取り付けられた排気管５を通して排気し、前記密閉空間４内の空気がほぼ全量排気された時点で２つのメタルハライドランプ８，９を点灯して前記光透過性型１および前記光透過性バッグ２を通して紫外線をビニルエステル樹脂含浸ガラスクロス積層物の上下面に３分間照射することにより６層ガラスクロス強化エポキシ樹脂成形品を製造した。
【００３１】
得られた実施例２の６層ガラスクロス強化エポキシ樹脂成形品をＪＩＳＫ７０５４の引張試験に従って引張強度およびこの引張強度から計算される引張弾性率を求めた。その結果、実施例３の成形品は引張強度が２３．５ｋｇｆ／ｍｍ^２、引張弾性率が１７００ｋｇｆ／ｍｍ^２の値を示し、６層ガラスクロス強化熱硬化エポキシ樹脂成形品の引張強度が２５．６ｋｇｆ／ｍｍ^２、引張弾性率が１９００ｋｇｆ／ｍｍ^２と遜色のない引張特性を有することが確認された。
【００３２】
（実施例４）
ガラスクロス（鐘紡社製商品名；ＫＳ１５８１）を８層重ね、このガラスクロス積層物をラジカル重合型の光硬化性樹脂であるエポキシ樹脂（ダウ・ケミカル社製商品名；ＵＶＲ−６１１０）に浸漬して含浸させて作製したガラスクロス：エポキシ樹脂の重量比率が６０：４０のエポキシ樹脂含浸ガラスクロス積層物を用い、かつ２つのメタルハライドランプ８，９からの紫外線の照射時間を３分間にした以外、実施例１と同様な方法により８層ガラスクロス強化エポキシ樹脂成形品を製造した。
【００３３】
得られた実施例４の８層ガラスクロス強化エポキシ樹脂成形品をＡＳＴＭＤ７９０の曲げ試験に従って曲げ強度およびこの曲げ強度から計算される曲げ弾性率を求めた。その結果、実施例４の成形品は曲げ強度が２４．６ｋｇｆ／ｍｍ^２、曲げ弾性率が１７５０ｋｇｆ／ｍｍ^２の値を示し、８層ガラスクロス強化熱硬化エポキシ樹脂成形品の曲げ強度が２４．３ｋｇｆ／ｍｍ^２、曲げ弾性率が１８００ｋｇｆ／ｍｍ^２と遜色のない曲げ特性を有することが確認された。
【００３４】
（第２実施形態）
図２は、この第２実施形態に係る繊維強化光硬化樹脂成形品の製造装置を示す概略図である。
【００３５】
図２中の２１は、主面に凹部２２を有する例えばポリカーボネートからなるブロック状の光透過性型である。例えばポリアクリル樹脂フィルムからなる光透過性バッグ２３は、前記光透過性型２１の主面および凹部２２に沿ってその主面周囲に接着された枠状シーラント材２４を介して取り付けられ、前記光透過性型２１と光透過性バッグ２３の間に密閉空間２５を形成している。
【００３６】
排気管２６は、前記光透過性バッグ２３の右端部に前記密閉空間２５と連通するように取り付けられている。図示しない真空ポンプは、前記排気管２６に連結されている。ラジカル重合型の光硬化性樹脂が収容されたタンク２７はその底部に注入管２８が連結され、この注入管２８は前記光透過性バッグ２３の左端部に前記密閉空間２５と連通するように取り付けられている。バルブ２９は、前記注入管２８に介装されている。
【００３７】
２つの光源、例えばメタルハライドランプ３０、３１は前記光透過性型２１および前記光透過性バッグ２３にそれぞれ対向するように配置されている。
【００３８】
なお、前記光透過性型２１はポリカーボネートに代えてガラス、またはポリアクリル樹脂等の他の光透過性プラスチックから作ってもよい。前記光透過性型の形状は凹部を有するブロック状に限らず、凸部を有するブロック状、平板状にしてもよい。
【００３９】
前記光透過性バッグ２３は、ポリアクリル樹脂フィルムに代えて別の光透過性プラスチックフィルムから作ってもよい。
【００４０】
前記光源は、メタルハライドランプに代えてハロゲンランプ、キセノンランプ、水銀ランプ等を用いてもよい。
【００４１】
次に、前述した図２に示す製造装置を用いて繊維強化光硬化樹脂成形品の製造を説明する。
【００４２】
まず、光透過性型２１の凹部２２内に強化繊維３２を任意の層重ねてセットする。つづいて、光透過性バッグ２３を前記光透過性型２１の主面および凹部２２内面に沿ってその主面周囲に接着された枠状シーラント材２４を介して取り付け、前記光透過性型２１と光透過性バッグ２３の間に形成された密閉空間２５に前記強化繊維３２を収納する。
【００４３】
次いで、図示しない真空ポンプを作動して前記密閉空間２５内の空気を排気管２６を通して排気する。前記密閉空間２５内の空気がほぼ全量排気された時点で注入管２８のバルブ２９を開き、タンク２７内に収容されたラジカル重合型の光硬化性樹脂を注入管２８を通して前記密閉空間２５に注入して光硬化性樹脂を前記強化繊維３２に含浸させることにより前記密閉空間２５内に光硬化性樹脂含浸強化繊維を作製する。つづいて、２つのメタルハライドランプ３０，３１を点灯して前記光透過性型２１および前記光透過性バッグ２３を通して紫外線を光硬化性樹脂含浸強化繊維の上下面に照射する。このとき、光硬化性樹脂含浸強化繊維が収納される密閉空間２５は空気が排気された酸素フリーの雰囲気で、その光硬化性樹脂含浸強化繊維の光硬化性樹脂が硬化されて繊維強化光硬化樹脂成形品が製造される。
【００４４】
この後、前記光透過性バッグ２３を取り除き、繊維強化光硬化樹脂成形品を前記光透過性型２１から取り出す。
【００４５】
前記強化繊維および前記ラジカル重合型の光硬化性樹脂は、前記第１実施形態で説明したのと同様なものを用いることができる。
【００４６】
以上、第２実施形態の製造装置によれば光透過性型２１と光透過性バッグ２３の間に形成された密閉空間２５に強化繊維３２をセットした状態でその中の空気を排気し、その密閉空間２５内にタンク２９、注入管２８からラジカル重合型の光硬化性樹脂を注入することにより前記密閉空間２５内に光硬化性樹脂含浸強化繊維を形成でき、この後の２つのメタルハライドランプ３０，３１からの紫外線照射において前記密閉空間２５が酸素フリーの雰囲気で光硬化性樹脂含浸強化繊維のラジカル重合型の光硬化性樹脂を硬化できる。その結果、ラジカル重合型の光硬化性樹脂を酸素による光硬化反応阻害を受けることなく、安定かつ短時間で硬化できるため、繊維強化熱硬化エポキシ樹脂成形品と遜色のない引張特性、曲げ特性を有する繊維強化光硬化樹脂成形品を量産的に製造することができる。
【００４７】
また、第２実施形態の製造装置はオートクレーブ、硬化炉等の大型設備が不要であるため、小型化、低コスト化を実現できる。
【００４８】
【発明の効果】
以上詳述したように本発明によれば、大型な設備を必要とせずに従来の繊維強化熱硬化エポキシ樹脂成形品と遜色のない引張特性、曲げ特性のような機械的特性を有する繊維強化光硬化樹脂成形品を短時間で製造することが可能な製造装置を提供することができる。
【図面の簡単な説明】
【図１】本発明の第１実施形態に係る繊維強化光硬化樹脂成形品の製造装置を示す概略図。
【図２】本発明の第２実施形態に係る繊維強化光硬化樹脂成形品の製造装置を示す概略図。
【符号の説明】
１，２１…光透過性型、
２，２３…光透過性バッグ、
４，２５…密閉空間、
５，２６…排気管、
８，９，３０，３１…光源（メタルハライドランプ）、
１０…光硬化性樹脂含浸強化繊維、
２７…タンク、
２８…注入管、
３２…強化繊維。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an apparatus for manufacturing a fiber-reinforced photocurable resin molded product.
[0002]
[Prior art]
Conventionally, fiber-reinforced plastics are manufactured by setting a thermosetting resin-impregnated reinforcing fiber in which a thermosetting resin is impregnated into a laminate of reinforcing fibers such as glass in a metal mold or a heat-resistant resin mold, and then thermosetting. Have been.
[0003]
However, the production of such a fiber reinforced plastic has a problem that a large facility such as an autoclave and a curing furnace is required.
[0004]
On the other hand, photocurable resins are roughly classified into radical polymerization type and cation polymerization type according to the difference in reaction mechanism, and radical polymerization type using energy of ultraviolet rays is mainly used. The radical polymerization type photocurable resin has an advantage that the curing speed is high, but the curing is inhibited by oxygen. For this reason, use of the radical polymerization type photocurable resin has been limited.
[0005]
[Problems to be solved by the invention]
The present invention provides a manufacturing apparatus capable of manufacturing a fiber-reinforced photocurable resin molded product having mechanical properties comparable to those of a conventional fiber-reinforced thermosetting epoxy resin molded product in a short time without requiring large-scale equipment. It is intended to provide.
[0006]
[Means for Solving the Problems]
The apparatus for producing a fiber-reinforced photocurable resin molded product according to the present invention is a fiber-reinforced photocurable resin molding by irradiating light to a photocurable resin-impregnated reinforcing fiber obtained by impregnating a reinforcing fiber with a radical polymerization type photocurable resin. An apparatus for manufacturing an article,
Light transmissive type,
A light-transmitting bag disposed on the main surface of the light-transmitting mold to form a closed space in which the photocurable resin-impregnated reinforcing fibers are stored,
Vacuum evacuation means attached to the light-permeable bag so as to communicate with the closed space,
A light source disposed on the side of the light transmissive type and the light transmissive bag.
[0007]
Another apparatus for producing a fiber-reinforced photocurable resin molded product according to the present invention is an apparatus for impregnating a reinforcing fiber with a radical polymerization type photocurable resin and irradiating light to produce a fiber-reinforced photocurable resin molded product. So,
Light transmissive type,
A light-transmitting bag is disposed on the main surface of the light-transmitting type, and the reinforcing fibers are housed therein to form a closed space into which the photocurable resin is injected.
Injection means of a photocurable resin attached to the light-permeable bag so as to communicate with the closed space,
Vacuum evacuation means attached to the light-permeable bag so as to communicate with the closed space,
A light source disposed on the side of the light transmissive type and the light transmissive bag.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an apparatus for manufacturing a fiber-reinforced photocurable resin molded product according to the present invention will be described in detail with reference to the drawings.
[0009]
(1st Embodiment)
FIG. 1 is a schematic view showing an apparatus for manufacturing a fiber-reinforced photocurable resin molded product according to the first embodiment.
[0010]
Reference numeral 1 in FIG. 1 denotes a plate-shaped light transmitting type made of, for example, polycarbonate. For example, a light-transmitting bag 2 made of a polyacrylic resin film is attached to a main surface of the light-transmitting mold 1 via a frame-shaped sealant material 3 adhered around the main surface. A closed space 4 for storing a photo-curable resin-impregnated reinforcing fiber is formed between the light-transmitting bags 2.
[0011]
The exhaust pipe 5 is attached to an end of the light transmissive bag 2 via a support member 6 so as to communicate with the closed space 4. A vacuum pump (not shown) is connected to the exhaust pipe 5. The edge bleeder 7 is arranged in the closed space 4 for pressing and fixing the photo-curable resin-impregnated reinforcing fibers stored therein.
[0012]
Two light sources, for example, metal halide lamps 8 and 9 are arranged so as to face the light transmitting mold 1 and the light transmitting bag 2, respectively.
[0013]
The light transmitting mold 1 may be made of glass or another light transmitting plastic such as polyacrylic resin instead of polycarbonate.
[0014]
The light transmitting bag 2 may be made of another light transmitting plastic film instead of the polyacryl resin film.
[0015]
As the light source, a halogen lamp, a xenon lamp, a mercury lamp, or the like may be used instead of the metal halide lamp.
[0016]
Next, the production of a fiber-reinforced photocurable resin molded product using the production apparatus shown in FIG. 1 will be described.
[0017]
First, a photocurable resin-impregnated reinforced fiber in which a reinforced fiber is impregnated with a radical polymerization type photocurable resin is prepared. The photocurable resin-impregnated reinforcing fiber 10 is set on the light transmitting mold 1 via the lower release paper 11. Subsequently, the periphery of the upper surface of the photocurable resin-impregnated reinforcing fiber 10 is pressed and fixed by the edge bleeder 7, and then the upper release paper 12 is disposed on the upper surface of the photocurable resin-impregnated reinforcing fiber 10. Subsequently, the light-transmitting bag 2 is attached to the main surface of the light-transmitting mold 1 via a frame-shaped sealant material 3 adhered to the periphery of the main surface, and the light-transmitting bag 2 is disposed between the light-transmitting mold 1 and the light-transmitting bag 2. The lower release paper 11, the photocurable resin-impregnated reinforcing fiber 10, and the upper release paper 12 are stored in the closed space 4 formed in the above.
[0018]
Next, a vacuum pump (not shown) is operated to exhaust air in the closed space 4 through an exhaust pipe 5 attached to an end of the bag 2 via a support member 6. When almost all of the air in the closed space 4 has been exhausted, the two metal halide lamps 8 and 9 are turned on to emit ultraviolet light through the light-transmitting mold 1 and the light-transmitting bag 2 to photocurable resin-impregnated reinforced fibers 10. Irradiate the upper and lower surfaces. At this time, the enclosed space 4 in which the photocurable resin-impregnated reinforcing fiber 10 is stored is an oxygen-free atmosphere in which air is exhausted, and the photocurable resin of the photocurable resin-impregnated reinforcing fiber 10 is photocured to obtain a fiber. A reinforced photocurable resin molded article is manufactured.
[0019]
Thereafter, the inside of the closed space 4 is returned to the atmospheric pressure, the light transmissive bag 2 is removed, and the fiber-reinforced photocurable resin molded product is taken out together with the upper and lower release papers 12 and 11, and these release papers 12 and 11 are removed. Peel off and take out the fiber reinforced photocurable resin molded product.
[0020]
As the reinforcing fiber, for example, a glass fiber or a woven or nonwoven fabric made of glass fiber can be used.
[0021]
The radical-curable photocurable resin is a) a photopolymerizable prepolymer (oligomer) such as an ester, an ether acrylate, a urethane acrylate, an epoxy acrylate, an amino resin acrylate, an acrylic resin acrylate, and an unsaturated polyester; b) Photopolysynthetic diluents (monomers), such as monofunctional, such as 2-ethylhexyl acrylate, bifunctional, such as neopentyl glycol diacrylate, and polyfunctional, such as mermethylolpropane triacrylate; and c) benzoethers The main component is a photopolymerization initiator such as a system.
[0022]
As described above, according to the manufacturing apparatus of the first embodiment, in a state where the photo-curable resin-impregnated reinforcing fibers are set in the closed space 4 formed between the light-transmitting mold 1 and the light-transmitting bag 2, the air therein is blown. The radical polymerization type photocurable resin of the photocurable resin-impregnated reinforcing fiber can be photocured by irradiating ultraviolet rays from two metal halide lamps 8 and 9 as light sources in an oxygen-free atmosphere after exhaustion. As a result, the radical polymerization type photocurable resin can be cured stably and in a short time without being inhibited by the photocuring reaction due to oxygen, so that the tensile properties and bending properties are comparable to those of fiber-reinforced thermosetting epoxy resin molded products. A fiber-reinforced photocurable resin molded article having the same can be manufactured.
[0023]
In addition, the manufacturing apparatus according to the first embodiment does not require large-scale equipment such as an autoclave and a curing furnace, so that downsizing and cost reduction can be realized.
[0024]
(Example 1)
First, six layers of glass cloth (Kanebo Co., Ltd .; KS1581) are layered, and this glass cloth laminate is a vinyl ester resin (trade name of Showa Kogaku Co., Ltd., LC-720) which is a radical-curable photocurable resin. To impregnate it to produce a glass cloth laminate impregnated with vinyl ester resin having a weight ratio of glass cloth: vinyl ester resin of 60:40.
[0025]
Next, using the manufacturing apparatus shown in FIG. 1 described above, the closed space 4 formed between the light-transmitting mold 1 and the light-transmitting bag 2 with the vinyl ester resin-impregnated glass cloth laminate sandwiched between two pieces of release paper. The air in the closed space 4 is exhausted through an exhaust pipe 5 attached to the end of the bag 2 via a support member 6 by operating a vacuum pump (not shown). When almost all of the air has been exhausted, the two metal halide lamps 8 and 9 are turned on, and ultraviolet light is applied to the upper and lower surfaces of the glass cloth laminate impregnated with the vinyl ester resin through the light transmitting mold 1 and the light transmitting bag 2 for 10 minutes. Irradiation produced a 6-layer glass cloth reinforced vinyl ester resin molded product.
[0026]
The obtained six-layer glass cloth reinforced vinyl ester resin molded product of Example 1 was subjected to a tensile test according to JIS K7054 to determine a tensile strength and a tensile modulus calculated from the tensile strength. As a result, molded articles tensile strength 24.5kgf / mm ² of Example 1, the tensile modulus represents the value of 1700kgf / mm ^2, a tensile strength of 6-layer glass cloth reinforced thermoset epoxy resin molded article 25. 6 kgf / mm ^2, tensile modulus was confirmed to have a 1900kgf / mm ² and in no way inferior tensile properties.
[0027]
(Example 2)
Eight layers of glass cloth (Kanebo Corp .; KS1581) are laminated, and this glass cloth laminate is immersed in a vinyl ester resin (trade name of Showa Kogaku KK; LC-720) which is a photopolymerizable resin of radical polymerization type. And a glass cloth impregnated with a vinyl ester resin having a weight ratio of 60:40 of vinyl ester resin, and irradiating ultraviolet rays from two metal halide lamps 8 and 9 to 10 minutes. An 8-layer glass cloth reinforced vinyl ester resin molded product was produced in the same manner as in Example 1 except that the above procedure was repeated.
[0028]
The obtained eight-layer glass cloth reinforced vinyl ester resin molded product of Example 2 was subjected to a bending test according to ASTM D790 to determine a bending strength and a bending elastic modulus calculated from the bending strength. As a result, the molded product of Example 2 had a bending strength of 21.4 kgf / mm ² and a flexural modulus of 1750 kgf / mm ² , and the eight-layer glass cloth reinforced thermosetting epoxy resin molded product had a bending strength of 24. 3 kgf / mm ^2, it was confirmed that the flexural modulus have 1800kgf / mm ² and in no way inferior bending characteristics.
[0029]
(Example 3)
First, six layers of glass cloth (Kanebo Co., Ltd .; KS1581) are laminated, and this glass cloth laminate is applied to an epoxy resin (Dow Chemical Co., Ltd .; UVR-6110) which is a radical polymerization type photocurable resin. The glass cloth was impregnated and impregnated to prepare an epoxy resin impregnated glass cloth laminate having a weight ratio of glass cloth: epoxy resin of 60:40.
[0030]
Next, using the manufacturing apparatus shown in FIG. 1 described above, the epoxy resin-impregnated glass cloth laminate is sandwiched between two pieces of release paper to form a sealed space 4 formed between the light-transmitting mold 1 and the light-transmitting bag 2. The air in the closed space 4 is exhausted through an exhaust pipe 5 attached to the end of the bag 2 via a support member 6 by operating a vacuum pump (not shown). When almost all of the gas has been exhausted, the two metal halide lamps 8 and 9 are turned on, and the upper and lower surfaces of the vinyl ester resin-impregnated glass cloth laminate are irradiated with ultraviolet light for 3 minutes through the light transmitting mold 1 and the light transmitting bag 2. Thus, a six-layer glass cloth reinforced epoxy resin molded product was produced.
[0031]
The obtained six-layer glass cloth reinforced epoxy resin molded product of Example 2 was subjected to a tensile test according to JIS K7054 to determine a tensile strength and a tensile modulus calculated from the tensile strength. As a result, the molded product of Example 3 had a tensile strength of 23.5 kgf / mm ² and a tensile modulus of 1700 kgf / mm ² , and the six-layer glass cloth reinforced thermosetting epoxy resin molded product had a tensile strength of 25.5 kgf / mm ² . 6 kgf / mm ^2, tensile modulus was confirmed to have a 1900kgf / mm ² and in no way inferior tensile properties.
[0032]
(Example 4)
Eight layers of glass cloth (manufactured by Kanebo Co .; KS1581) are laminated, and this glass cloth laminate is immersed in an epoxy resin (trade name of Dow Chemical Company; UVR-6110) which is a photopolymerization resin of radical polymerization type. Except that the weight ratio of the glass cloth: epoxy resin was 60:40, and the irradiation time of the ultraviolet rays from the two metal halide lamps 8 and 9 was 3 minutes. An eight-layer glass cloth reinforced epoxy resin molded product was manufactured in the same manner as in Example 1.
[0033]
The obtained eight-layer glass cloth reinforced epoxy resin molded product of Example 4 was subjected to a bending test according to ASTM D790 to determine a bending strength and a bending elastic modulus calculated from the bending strength. As a result, the molded product of Example 4 had a bending strength of 24.6 kgf / mm ² and a flexural modulus of 1750 kgf / mm ² , and the eight-layer glass cloth reinforced thermosetting epoxy resin molded product had a bending strength of 24. 3 kgf / mm ^2, it was confirmed that the flexural modulus have 1800kgf / mm ² and in no way inferior bending characteristics.
[0034]
(2nd Embodiment)
FIG. 2 is a schematic view showing an apparatus for manufacturing a fiber-reinforced photocurable resin molded product according to the second embodiment.
[0035]
Reference numeral 21 in FIG. 2 denotes a block-shaped light transmitting type made of, for example, polycarbonate having a concave portion 22 on the main surface. For example, a light transmissive bag 23 made of a polyacrylic resin film is attached along a main surface of the light transmissive mold 21 and a concave portion 22 via a frame-shaped sealant material 24 adhered around the main surface. A closed space 25 is formed between the transmissive mold 21 and the light transmissive bag 23.
[0036]
The exhaust pipe 26 is attached to the right end of the light transmissive bag 23 so as to communicate with the closed space 25. A vacuum pump (not shown) is connected to the exhaust pipe 26. An injection pipe 28 is connected to the bottom of the tank 27 containing the radical polymerization type photocurable resin, and the injection pipe 28 is attached to the left end of the light transmissive bag 23 so as to communicate with the closed space 25. Have been. The valve 29 is interposed in the injection pipe 28.
[0037]
Two light sources, for example, metal halide lamps 30 and 31 are arranged so as to face the light transmitting mold 21 and the light transmitting bag 23, respectively.
[0038]
The light-transmitting mold 21 may be made of glass or another light-transmitting plastic such as polyacrylic resin instead of polycarbonate. The shape of the light transmitting type is not limited to a block shape having a concave portion, and may be a block shape having a convex portion or a flat plate shape.
[0039]
The light transmissive bag 23 may be made of another light transmissive plastic film instead of the polyacryl resin film.
[0040]
As the light source, a halogen lamp, a xenon lamp, a mercury lamp, or the like may be used instead of the metal halide lamp.
[0041]
Next, the production of a fiber-reinforced photocurable resin molded product using the production apparatus shown in FIG. 2 will be described.
[0042]
First, the reinforcing fibers 32 are set in the concave portions 22 of the light transmissive mold 21 in an arbitrary layered manner. Subsequently, the light-transmitting bag 23 is attached along the main surface of the light-transmitting mold 21 and the inner surface of the concave portion 22 via a frame-shaped sealant material 24 adhered around the main surface. The reinforcing fibers 32 are stored in a closed space 25 formed between the light-transmitting bags 23.
[0043]
Next, the air in the closed space 25 is exhausted through the exhaust pipe 26 by operating a vacuum pump (not shown). When almost all of the air in the closed space 25 has been exhausted, the valve 29 of the injection pipe 28 is opened, and the radical polymerization type photocurable resin contained in the tank 27 is injected into the closed space 25 through the injection pipe 28. Then, the photo-curable resin is impregnated into the reinforcing fibers 32 to produce photo-curable resin-impregnated reinforcing fibers in the closed space 25. Subsequently, the two metal halide lamps 30 and 31 are turned on to irradiate the upper and lower surfaces of the photo-curable resin-impregnated reinforcing fibers with ultraviolet light through the light-transmitting mold 21 and the light-transmitting bag 23. At this time, the enclosed space 25 in which the photocurable resin-impregnated reinforcing fibers are stored is an oxygen-free atmosphere in which air is exhausted, and the photocurable resin of the photocurable resin-impregnated reinforcing fibers is cured, and the fiber-reinforced photocurable. A resin molded product is manufactured.
[0044]
Thereafter, the light-transmitting bag 23 is removed, and the fiber-reinforced light-cured resin molded product is removed from the light-transmitting mold 21.
[0045]
As the reinforcing fiber and the radical polymerization type photocurable resin, the same ones as described in the first embodiment can be used.
[0046]
As described above, according to the manufacturing apparatus of the second embodiment, while the reinforcing fibers 32 are set in the closed space 25 formed between the light-transmitting mold 21 and the light-transmitting bag 23, the air therein is exhausted, and By injecting a radical polymerization type photocurable resin into the closed space 25 from the tank 29 and the injection pipe 28, the photocurable resin-impregnated reinforcing fibers can be formed in the closed space 25. , 31 can cure the radical polymerization type photocurable resin of the photocurable resin-impregnated reinforcing fiber in an oxygen-free atmosphere in the closed space 25. As a result, the radical polymerization type photocurable resin can be cured stably and in a short time without being inhibited by the photocuring reaction due to oxygen, so that the tensile properties and bending properties are comparable to those of fiber-reinforced thermosetting epoxy resin molded products. A fiber-reinforced photocurable resin molded product having the same can be mass-produced.
[0047]
Further, the manufacturing apparatus of the second embodiment does not require large-scale equipment such as an autoclave and a curing furnace, so that downsizing and cost reduction can be realized.
[0048]
【The invention's effect】
As described in detail above, according to the present invention, a fiber-reinforced light having mechanical properties such as tensile properties and bending properties that is comparable to that of a conventional fiber-reinforced thermosetting epoxy resin molded product without requiring large-scale equipment. A manufacturing apparatus capable of manufacturing a cured resin molded product in a short time can be provided.
[Brief description of the drawings]
FIG. 1 is a schematic view showing an apparatus for manufacturing a fiber-reinforced photocurable resin molded product according to a first embodiment of the present invention.
FIG. 2 is a schematic view showing an apparatus for manufacturing a fiber-reinforced photocurable resin molded product according to a second embodiment of the present invention.
[Explanation of symbols]
1,21 ... light transmissive type,
2,23 ... light transmissive bag,
4,25 ... closed space,
5, 26 ... exhaust pipe,
8, 9, 30, 31 ... light source (metal halide lamp),
10. Photocurable resin-impregnated reinforcing fiber,
27 ... Tank,
28 ... injection tube,
32 ... Reinforcing fiber.

Claims

An apparatus for manufacturing a fiber-reinforced photocurable resin molded article by irradiating light to a photocurable resin-impregnated reinforced fiber in which a reinforced fiber is impregnated with a radical polymerization type photocurable resin,
Light transmissive type,
A light-transmitting bag disposed on the main surface of the light-transmitting mold to form a closed space in which the photocurable resin-impregnated reinforcing fibers are stored,
Vacuum evacuation means attached to the light-permeable bag so as to communicate with the closed space,
An apparatus for producing a fiber-reinforced photocurable resin molded product, comprising: a light source that is disposed on the side of the light-transmitting mold and the light-transmitting bag.

A device for impregnating a reinforced fiber with a radical polymerization type photocurable resin and irradiating light to produce a fiber reinforced photocurable resin molded product,
Light transmissive type,
A light-transmitting bag is disposed on the main surface of the light-transmitting type, and the reinforcing fibers are housed therein to form a closed space into which the photocurable resin is injected.
Injection means of a photocurable resin attached to the light-permeable bag so as to communicate with the closed space,
Vacuum evacuation means attached to the light-permeable bag so as to communicate with the closed space,
An apparatus for producing a fiber-reinforced photocurable resin molded product, comprising: a light source that is disposed on the side of the light-transmitting mold and the light-transmitting bag.