JP3164652B2 - Fiber reinforced plastic products with improved weather resistance - Google Patents
Fiber reinforced plastic products with improved weather resistanceInfo
- Publication number
- JP3164652B2 JP3164652B2 JP20917492A JP20917492A JP3164652B2 JP 3164652 B2 JP3164652 B2 JP 3164652B2 JP 20917492 A JP20917492 A JP 20917492A JP 20917492 A JP20917492 A JP 20917492A JP 3164652 B2 JP3164652 B2 JP 3164652B2
- Authority
- JP
- Japan
- Prior art keywords
- reinforced plastic
- fiber
- weather resistance
- polyester resin
- glass fiber
- 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
Landscapes
- Laminated Bodies (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は優れた耐候性並びに外観
品質を有する繊維強化プラスチック製品に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fiber-reinforced plastic product having excellent weather resistance and appearance quality.
【０００２】[0002]
【従来技術とその課題】繊維強化プラスチックは、熱硬
化樹脂とガラス繊維などの強化用繊維から構成され、そ
の優れた機械的強度、成形性、経済性などの点からタン
ク、コンテナなどの容器類や各種建築材料など幅広い用
途に供されている。2. Description of the Related Art Fiber-reinforced plastics are composed of thermosetting resins and reinforcing fibers such as glass fibers. Containers such as tanks and containers are excellent in terms of their excellent mechanical strength, moldability, and economy. It is used for a wide range of applications such as and various building materials.
【０００３】しかし、ＦＲＰ製品は屋外において長期間
紫外線に曝されると、黄変や表面層にガラス繊維が露出
してくると云う問題があり改善が必要であった。 そこ
で、表面にポリフッ化ビニリデン（以下「ＰＶＤＦ」と
云う）フィルムをラミネートしたものや、紫外線吸収剤
などを添加した樹脂を表面層として積層したＦＲＰ製品
が提案されている。However, there is a problem that FRP products are yellowed and glass fibers are exposed on a surface layer when exposed to ultraviolet rays for a long period of time outdoors. Therefore, there have been proposed FRP products in which a polyvinylidene fluoride (hereinafter referred to as “PVDF”) film is laminated on the surface, or an FRP product in which a resin to which an ultraviolet absorber or the like is added is laminated as a surface layer.
【０００４】しかしながら、前者にあっては波板状に形
成した板体の表面に、ウレタン系接着剤によりＰＶＤＦ
フィルムを接着積層したものであるため、ＰＶＤＦフィ
ルムが剥離することがあり、また後者の場合、シート・
モールディング・コンパウンド（以下、「ＳＭＣ」と云
う）は、表面樹脂層が薄いため例えばＳＭＣを構成する
ポリエステル樹脂の中に紫外線吸収剤を添加しても充分
な耐候性は得難いと云う問題がある。However, in the former case, PVDF is applied to the surface of a corrugated plate by urethane-based adhesive.
Since the film is bonded and laminated, the PVDF film may be peeled off.
The molding compound (hereinafter, referred to as "SMC") has a problem that since the surface resin layer is thin, sufficient weather resistance cannot be obtained even if an ultraviolet absorber is added to, for example, a polyester resin constituting the SMC.
【０００５】[0005]
【課題を解決するための手段】本発明は上記課題を解決
するものであって、その要旨はガラス繊維基材に不飽和
ポリエステル樹脂組成物を含浸してなる未硬化状のＳＭ
Ｃの表面に、マット状又はクロス状のガラス繊維にメチ
ル・メタクリレート変性の不飽和ポリエステル樹脂を含
浸してなるプリプレグを積層し、加熱／加圧したことを
特徴とする耐候性改良繊維強化プラスチック製品であ
る。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and its gist is to provide an uncured SM obtained by impregnating a glass fiber base material with an unsaturated polyester resin composition.
A prepreg made by impregnating a mat-shaped or cloth-shaped glass fiber with a methyl-methacrylate-modified unsaturated polyester resin on the surface of C, and heated / pressurized, wherein the fiber is a weather-resistant fiber-reinforced plastic product. It is.
【０００６】本発明において基体となる未硬化状のＳＭ
Ｃは、通常のスチレンモノマーを用いた不飽和ポリエス
テル樹脂に、炭酸カルシウム粉末を主とする充填剤、硬
化剤などを添加した樹脂コンパウンドをチョップド・ロ
ービングガラス或いはチョップド・ストランドマットな
ど補強用の単繊維状のガラス繊維基材に含浸したもので
ある。Uncured SM serving as a substrate in the present invention
C is a monofilament for reinforcement such as chopped roving glass or chopped strand mat formed by adding a resin compound obtained by adding a filler and a curing agent mainly containing calcium carbonate powder to an unsaturated polyester resin using a usual styrene monomer. Impregnated into a glass fiber base material.
【０００７】また、上記ＳＭＣの表面に積層するプリプ
レグは、上記スチレンモノマーの一部をメチル・メタク
リレートに置換え変性した不飽和ポリエステル樹脂のコ
ンパウンドを、連続ガラス繊維マット又はガラス繊維ク
ロス等のガラス繊維基材に含浸させたものである。 こ
こで重要なことは、プリプレグ中のガラス繊維基材は、
連続した長繊維状のものであって、表面の樹脂層が剥離
した時にガラス繊維端部の突出しを生ずることがないと
共に、ＳＭＣ内層部からのガラス繊維の露出を押え込む
作用を有する点である。The prepreg to be laminated on the surface of the SMC is made of a compound of an unsaturated polyester resin obtained by replacing a part of the styrene monomer with methyl methacrylate and modifying the same with a glass fiber base such as a continuous glass fiber mat or glass fiber cloth. The material is impregnated. What is important here is that the glass fiber substrate in the prepreg is
It is a continuous long-fiber-shaped one, and has a function of preventing the end of the glass fiber from protruding when the resin layer on the surface is peeled off and suppressing the exposure of the glass fiber from the SMC inner layer part. .
【０００８】本発明品は、上記ＳＭＣ基体に上記プリプ
レグを積層し、加熱プレスしたものであるが、積層一体
化した成形品は、表面にメチル・メタクリレート変性ポ
リエステル樹脂層を有し、連続したガラス繊維基材を介
して通常のＳＭＣ層を有する層構成のものである。The product of the present invention is obtained by laminating the above prepreg on the above SMC substrate and pressing by heating. The molded product obtained by laminating and integrating has a methyl methacrylate-modified polyester resin layer on the surface and is a continuous glass. It has a layer structure having an ordinary SMC layer via a fiber base material.
【０００９】[0009]
【実施例】不飽和ポリエステル樹脂に炭酸カルシウム等
の充填剤、分散剤、硬化剤等を添加した表１に示す配合
比率からなる樹脂コンパウンド７０ｗｔ％を、チョップ
ド・ロービングガラス３０ｗｔ％に含浸し、未硬化状の
ＳＭＣを得る。Example: A chopped roving glass of 30 wt% was impregnated with 70 wt% of a resin compound having a compounding ratio shown in Table 1 obtained by adding a filler such as calcium carbonate, a dispersant, a curing agent, etc. to an unsaturated polyester resin. A cured SMC is obtained.
【００１０】[0010]
【表１】 [Table 1]
【００１１】一方、不飽和ポリエステル樹脂が含有する
約５０％のスチレンモノマーの内の３０％をメチル・メ
タクリレートで置換した変性不飽和ポリエステル樹脂の
コンパウンドを、長繊維状ガラス繊維からなるクロスに
含浸して未硬化状のプリプレグを得る。On the other hand, a cloth made of a long fiber glass fiber is impregnated with a compound of a modified unsaturated polyester resin in which 30% of about 50% of a styrene monomer contained in the unsaturated polyester resin is substituted with methyl methacrylate. To obtain an uncured prepreg.
【００１２】次いで、厚み１．５ｍｍのＳＭＣ４枚（６
ｍｍ厚）の上に、厚み０．５ｍｍのプリプレグ１枚を積
層し、積層総厚み６．５ｍｍの積層体をプレス金型の下
金型上に仕込んで上型を閉じ、上型温度１４０゜Ｃ、下
型温度１３０゜Ｃ、圧力５０ｋｇ／ｃｍ2 、加圧保持時
間５分の条件でプレスして外観品質の優れた繊維強化プ
ラスチック成形品を得た。Next, four 1.5 mm thick SMCs (6
(thickness), a single prepreg having a thickness of 0.5 mm is laminated, a laminated body having a total laminated thickness of 6.5 mm is charged on a lower die of a press die, and the upper die is closed. C, a lower mold temperature of 130 ° C., a pressure of 50 kg / cm 2 , and a pressure holding time of 5 minutes were pressed to obtain a fiber-reinforced plastic molded article having excellent appearance quality.
【００１３】一方、上記同様厚みのＳＭＣの上に、プリ
プレグの代りに長繊維状ガラス繊維からなるクロスを上
記同様のプレス条件で積層成形し比較例とした。On the other hand, a cloth made of long fiber glass fiber was laminated and formed on the SMC having the same thickness under the same press conditions as the comparative example in place of the prepreg.
【００１４】得られた比較例のものは、表面にガラス繊
維が露出して外観不良となり、かつ耐候性が劣るが、本
考案の実施例のものは、表面が変性不飽和ポリエステル
樹脂層によって隠蔽されてＳＭＣ内部のガラス繊維が押
え込まれているので、外観が優れると共に耐候性が大幅
に向上した。In the comparative example obtained, the glass fibers were exposed on the surface, resulting in poor appearance and poor weather resistance. However, in the example of the present invention, the surface was concealed by the modified unsaturated polyester resin layer. Since the glass fiber inside the SMC was pressed down, the appearance was excellent and the weather resistance was greatly improved.
【００１５】[0015]
【発明の効果】本発明は、上記構成よりなるので下記効
果を奏する。 即ち、成形品表面層はメチル・メタクリ
レートで置換した変性不飽和ポリエステル樹脂によって
長繊維状ガラスマットやクロスが隠蔽されるので耐候性
が向上すると共に、表面にガラス繊維端部の突出しを生
ずることがないので外観品質が優れている。The present invention has the above-mentioned structure, and has the following effects. That is, since the long fibrous glass mat or cloth is concealed by the modified unsaturated polyester resin substituted with methyl methacrylate, the molded article surface layer improves weather resistance, and may cause protrusion of glass fiber ends on the surface. No appearance quality is excellent.
Claims (1)
組成物を含浸してなる未硬化状のシート・モールディン
グ・コンパウンドの表面に、マット状又はクロス状のガ
ラス繊維にメチル・メタクリレート変性の不飽和ポリエ
ステル樹脂を含浸してなるプリプレグを積層し、加熱／
加圧したことを特徴とする耐候性改良繊維強化プラスチ
ック製品。1. An uncured sheet molding compound obtained by impregnating a glass fiber base material with an unsaturated polyester resin composition, a mat-shaped or cloth-shaped glass fiber and a methyl-methacrylate-modified unsaturated fiber. Laminate prepreg impregnated with polyester resin and heat /
A weather-resistant fiber-reinforced plastic product characterized by being pressurized .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20917492A JP3164652B2 (en) | 1992-08-05 | 1992-08-05 | Fiber reinforced plastic products with improved weather resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20917492A JP3164652B2 (en) | 1992-08-05 | 1992-08-05 | Fiber reinforced plastic products with improved weather resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0655681A JPH0655681A (en) | 1994-03-01 |
| JP3164652B2 true JP3164652B2 (en) | 2001-05-08 |
Family
ID=16568561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20917492A Expired - Fee Related JP3164652B2 (en) | 1992-08-05 | 1992-08-05 | Fiber reinforced plastic products with improved weather resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3164652B2 (en) |
-
1992
- 1992-08-05 JP JP20917492A patent/JP3164652B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0655681A (en) | 1994-03-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |