JPS5924726A - Sheet molding compound - Google Patents
Sheet molding compoundInfo
- Publication number
- JPS5924726A JPS5924726A JP57132964A JP13296482A JPS5924726A JP S5924726 A JPS5924726 A JP S5924726A JP 57132964 A JP57132964 A JP 57132964A JP 13296482 A JP13296482 A JP 13296482A JP S5924726 A JPS5924726 A JP S5924726A
- Authority
- JP
- Japan
- Prior art keywords
- glass fiber
- smc
- parts
- fiber bundle
- weight
- 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
Links
Landscapes
- Moulding By Coating Moulds (AREA)
- Reinforced Plastic Materials (AREA)
- Laminated Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
(SMCと略称)に関するもめであシ、成型時の流動性
が良好であシ、且つ均一な、強度の大きいFRP製品が
得られるようなSMCに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to SMC (abbreviated as SMC), which has good fluidity during molding and can produce uniform, strong FRP products.
FRPは液状の熱硬化性樹脂を硝子繊維よシなる補強体
に含浸せしめ、この樹脂含浸補強体(未硬化FRPと云
う)を硬化せしめることによって製造することができる
。しかしながらその都度樹脂を補強体に含浸させるのは
操作及取扱いが面倒であるだけでなく、未硬化FRP中
の硝子繊維量割合(GCと云う)にバラツキが生じたシ
、或は使用中に樹脂粘度が変化したシし易く、均質な製
品の得難い難点がある。FRP can be manufactured by impregnating a reinforcing body such as glass fiber with a liquid thermosetting resin and curing this resin-impregnated reinforcing body (referred to as uncured FRP). However, impregnating the reinforcing body with resin each time is not only cumbersome to operate and handle, but also causes variations in the proportion of glass fibers (GC) in uncured FRP, or when resin is removed during use. It is difficult to obtain a homogeneous product due to the change in viscosity.
このため硝子繊維束に増粘剤を含む液状の熱硬化性樹脂
組成物を含浸させ、該樹脂を増粘させてなるSMCがF
RP成型に広く用いられ、この方法は取扱い、操作が簡
単であり均質な製品が得られる利点を有している反面次
のような難点を有する。For this reason, an SMC made by impregnating a glass fiber bundle with a liquid thermosetting resin composition containing a thickener and thickening the resin is F.
This method, which is widely used in RP molding, has the advantages of being easy to handle and operate and producing a homogeneous product, but has the following drawbacks.
一般にFRPの強度は、他の条件が一定の場合、使用す
る硝子繊維束の長さを大とする程大となる傾向を有する
。このため強度の大きいFRP 、例えば耐圧強度0.
7 Ky / crA以上の水タンク用パネルを製造
する際、極めて長さの長い、好ましくは連続した硝子繊
維束よりなるマット(コンティニュアスストランドマッ
ト、以下CSMと略称)を使用することが必要とされて
来た。しかしながら、補強体としてCSMを使用したS
MCは成型性が悪ぐ欠肉等が生じ易い。Generally, when other conditions are constant, the strength of FRP tends to increase as the length of the glass fiber bundle used increases. For this reason, FRP with high strength, for example, pressure resistance of 0.
When manufacturing water tank panels with a rating of 7 Ky/crA or higher, it is necessary to use a mat made of extremely long, preferably continuous glass fiber bundles (continuous strand mat, hereinafter abbreviated as CSM). I've been However, S using CSM as reinforcement
MC has poor moldability and is prone to underfilling.
このため、強度の大きい水タンク用パネルをSMCのみ
を用いて工業的に製造fることかできず、従来水タンク
用パネルをSMCを用いて製造する場合C8Mの薄層で
型面を覆い、ついでとのC8Mに所定厚みの2.5 n
程度の長さの硝子繊維束切断物を補強体として用いたS
MCを重ね、紋型と対をなす型で押圧し加熱する方法が
採用されていた。For this reason, it is not possible to industrially manufacture strong water tank panels using only SMC, and conventionally when manufacturing water tank panels using SMC, the mold surface is covered with a thin layer of C8M. Next, a predetermined thickness of 2.5 n was applied to C8M.
S using cut glass fiber bundles of approximately
The method used was to stack MC, press it with a mold that pairs with the pattern, and heat it.
この方法によるときは、SMC中の樹脂が型の挟圧、加
熱によってC8Mに向って流動する。従ってこの方法に
よるときは液状の樹脂を予めC8Mに含浸させておかな
くても、表面層がC8Mで補強されたパネルを得ること
ができる。この方法によるときは強度の大きいFRPを
うることかできるがSMCのみを用いる方法に比し操作
が煩雑であるのみならず、表面層中の樹脂の分布が不均
一となったり、樹脂とC8Mの馴染みが不良となったシ
することもあシ、又得られたパネルの強度も必らずしも
充分と云えない難点があった。When using this method, the resin in the SMC flows toward C8M due to the compression and heating of the mold. Therefore, when using this method, a panel whose surface layer is reinforced with C8M can be obtained without impregnating C8M with liquid resin in advance. When using this method, it is possible to obtain FRP with high strength, but the operation is not only more complicated than the method using only SMC, but also the distribution of the resin in the surface layer becomes uneven, and the relationship between the resin and C8M increases. There was also the problem that the adhesion was poor, and the strength of the obtained panel was not necessarily sufficient.
本発明者はかかる難点を解決し、操作も簡単であシ、均
質な、強度の大きい水タンク用パネル等のFRP製造に
好適なSMCを得るため研究を重ねた結果、ランダムに
配向された95〜20wt%の長さ8crn以上の硝子
繊維束と、5〜80wt%の1〜5crILの硝子繊維
束とよシなるマットをSMCの補強体として使用するこ
とにょシ、極めて好適な結果の得られることを見出し本
発明として提案したものである。As a result of repeated research to solve these difficulties and to obtain an SMC that is easy to operate, homogeneous, and has high strength and is suitable for manufacturing FRP such as water tank panels, the inventors have found that randomly oriented 95 Extremely favorable results can be obtained by using ~20wt% of glass fiber bundles with a length of 8crn or more and a mat made of glass fiber bundles of 5 to 80wt% of 1 to 5crIL as reinforcement for SMC. This was discovered and proposed as the present invention.
何故このような結果が得られるのか明らかではないが、
上述のSMC(以下本SMCという)を構成する補強体
は長尺の硝子繊維束を使用しているに拘らず、流動性が
極めて良好であり、sMcのみを用いて例えば水タンク
用パネルを製造しても、均質な、欠肉等のないFRP製
品をうろことができ、又短かい硝子繊維束が混入されて
いるに拘らず、強度の充分大きいFRP製品の得られる
ことが判明した。It is not clear why such results are obtained, but
Although the reinforcing body constituting the above-mentioned SMC (hereinafter referred to as this SMC) uses long glass fiber bundles, it has extremely good fluidity, and it is possible to manufacture panels for water tanks, for example, using only SMC. However, it has been found that it is possible to obtain a homogeneous FRP product with no missing parts, etc., and that it is possible to obtain an FRP product with sufficient strength even though short glass fiber bundles are mixed in.
次に本発明を更に具体的に説明する。Next, the present invention will be explained in more detail.
本発明においては8の以上の硝子繊維束、好ましくけ1
2〜200cInの長さに切断した硝子繊維束(以下長
尺繊維束という)を使用する。硝子繊維束の長さが8c
rn以下では充分強度の大きいFRP製品をうろことが
できない。そして長さ12〜20Onの硝子繊維束を用
いることによシ成型性、強度の特に優れたSMCを得る
ことができる。In the present invention, 8 or more glass fiber bundles, preferably 1
A glass fiber bundle cut into a length of 2 to 200 cIn (hereinafter referred to as a long fiber bundle) is used. The length of the glass fiber bundle is 8c
If it is below rn, it will not be possible to move around FRP products that are sufficiently strong. By using a glass fiber bundle having a length of 12 to 20 On, it is possible to obtain an SMC with particularly excellent moldability and strength.
そして長尺繊維束95〜20wt%に、5〜80wt%
の、長さ1〜5儒の硝子繊維束(以下短繊維束という)
を可及的均一に混合したマット状物(このマット状物を
以下本マット状物という)とする。短繊維束の長さが1
crn以下ではFRP製品の強度が低下し、又SMCの
製造が困難であり、又5cIn以上では充分な流動性を
有するSMCが得られない。又短繊維束の量が5チ以下
では充分な効果が得られず、又その量が80チ以上とな
ると充分な強度を有するFRP製品を得ることができな
い。and 5 to 80 wt% to the long fiber bundle 95 to 20 wt%.
Glass fiber bundles (hereinafter referred to as short fiber bundles) with a length of 1 to 5 yen
A mat-like material (this mat-like material is hereinafter referred to as the present mat-like material) is prepared by mixing as uniformly as possible. The length of short fiber bundle is 1
If it is less than crn, the strength of the FRP product will decrease and it will be difficult to manufacture SMC, and if it is more than 5 cIn, it will not be possible to obtain SMC with sufficient fluidity. Further, if the amount of short fiber bundles is less than 5 inches, a sufficient effect cannot be obtained, and if the amount is more than 80 inches, an FRP product with sufficient strength cannot be obtained.
なお、硝子繊維束としては直径6〜15μの硝子繊維を
50〜400本程度集束剤を附与集束したものが適当で
ある。本マット状物を使用し、例えば次のような方法で
SMCを製造する。The glass fiber bundle is suitably a bundle of about 50 to 400 glass fibers each having a diameter of 6 to 15 .mu. and bundled with a binding agent. Using this mat-like material, SMC is manufactured, for example, by the following method.
増粘剤を含む液状の熱硬化性樹脂、好ましくは不飽和ポ
リエステル樹脂組成物(通常樹脂100重量部に対し8
0〜150重量部の充填材、3〜8重量部のトーナー(
顔料組成物)、0.8〜1,5重量部の重合開始剤、4
〜7重量部の離型剤。Liquid thermosetting resin containing a thickener, preferably an unsaturated polyester resin composition (usually 8 parts by weight per 100 parts by weight of resin)
0 to 150 parts by weight of filler, 3 to 8 parts by weight of toner (
pigment composition), 0.8 to 1.5 parts by weight of polymerization initiator, 4
~7 parts by weight of mold release agent.
0.3〜1.0重量部の増粘剤を加え均一に混合したも
の(以下単に樹脂組成物という)を、長尺の合成樹脂フ
ィルム上に連続的に所定量塗布し、この上に長尺硝子繊
維束と短硝子繊維束を両者が可及的均一に混合するよう
に落下せしめ、別の合成樹脂フィルムで覆い、ロール等
で挟圧して硝子繊維束に樹脂組成物を含浸せしめ、円筒
状に巻取り養生して樹脂組成物を増粘せしめSMCとす
る。0.3 to 1.0 parts by weight of a thickener is added and mixed uniformly (hereinafter simply referred to as a resin composition), and a predetermined amount of the mixture is continuously applied onto a long synthetic resin film, and A long glass fiber bundle and a short glass fiber bundle are dropped so that they are mixed as uniformly as possible, covered with another synthetic resin film, and compressed with a roll or the like to impregnate the glass fiber bundle with the resin composition. The resin composition is rolled up and cured to thicken the resin composition to form SMC.
硝子繊維束100重量部に対する樹脂組成物の割合は1
00〜300重量部とするのが適当であシ、又SMCの
厚み(単位面積当)の重量)は2〜5 Ky / c!
1程度とするのが適当である。The ratio of the resin composition to 100 parts by weight of the glass fiber bundle is 1
It is appropriate that the amount is 00 to 300 parts by weight, and the thickness of SMC (weight per unit area) is 2 to 5 Ky/c!
It is appropriate to set it to about 1.
次に、上述のようなSMC(本SMC)を使用しFRP
を製造する方法を第1.2図に示すような方形の主要面
1とフランジ面2とを有する箱状の水タンク用パネルを
製造する例に就いて説明する。Next, use the above-mentioned SMC (this SMC) to create an FRP
The manufacturing method will be explained using an example of manufacturing a box-shaped water tank panel having a rectangular main surface 1 and a flange surface 2 as shown in FIG. 1.2.
本SMCをJ41:型の上面とほぼ同じ大きさに切断し
、所定枚数741i型の上面に重ねる。本SMCの大き
さは型の上面をほぼ覆うにぼる大きさでだ分であシ、本
SMCを折り曲げてフランジ部に相応する雄型の側面を
覆う必要はない。紋型と対をなす箱状の雌型でSMCを
押圧しつつ加熱すると本パSMCは雄型の側面に迄流動
し、均一な、高強度の水タンク用パネルを得ることがで
きる。This SMC is cut to approximately the same size as the top surface of the J41: mold, and a predetermined number of sheets are stacked on the top surface of the 741i mold. The size of the present SMC is large enough to almost cover the top surface of the mold, and there is no need to bend the present SMC to cover the side surface of the male mold corresponding to the flange portion. When the SMC is pressed and heated with a box-shaped female mold paired with the pattern mold, the SMC flows to the sides of the male mold, making it possible to obtain a uniform, high-strength water tank panel.
上述のように、本発明の方法によるときは、簡単な操作
で、均質な高強度の水タンク用パネル等のFRP製品を
製造することができ、本発明は工業上有益なものである
。As described above, when using the method of the present invention, homogeneous, high-strength FRP products such as panels for water tanks can be manufactured with simple operations, and the present invention is industrially useful.
次に本発明の実施例を示す。Next, examples of the present invention will be shown.
実施例
液状不飽和ポリエステル樹脂100重量部、酸化マグネ
シューム(増粘剤)05重量部、炭酸カルシューム10
0重量部、オーブチルパーベンゾエート(重合開始剤)
1重量部3.トーナー3重量部、ステアリン酸亜鉛(離
型剤)5重量部の均一な混合物よシなる樹脂組成物を、
合成樹脂フィルム上に2.5Kp/−の割合で塗布し、
この上に直径13μの硝子繊維に酢ビ系集束剤を附与し
、100本集束してなる硝子繊維束を20c1nの長さ
に切断したものを800 gr /n? 、長さ2cm
の同様の硝子繊維束を200 g r / m’の割合
で均質に落下せしめ、この上に別の合成樹脂フィルムを
重ね、常法に従い、樹脂組成物を増粘させ、硝子繊維束
が無方向に分布したSMCを得た。このSMCを93α
X93Crnの大きさに切断し、この切断物を4枚雄型
の上面上に重ね、対をなす箱状の雌型で40に〜の圧力
で押圧しつつ140℃に6分間加熱し、100αxi0
0ms平均厚み4.5 m 、フランジ部の高さ7.5
Crn、厚み8咽の第1.2図に示すようなパネルを製
造した。Example 100 parts by weight of liquid unsaturated polyester resin, 05 parts by weight of magnesium oxide (thickener), 10 parts by weight of calcium carbonate
0 parts by weight, orbutyl perbenzoate (polymerization initiator)
1 part by weight3. A resin composition consisting of a homogeneous mixture of 3 parts by weight of toner and 5 parts by weight of zinc stearate (mold release agent),
Coated on a synthetic resin film at a rate of 2.5Kp/-,
On top of this, glass fibers with a diameter of 13 μm were added with a vinyl acetate-based sizing agent, and 100 glass fiber bundles were cut into a length of 20 c1n at 800 gr/n? , length 2cm
Similar glass fiber bundles were uniformly dropped at a rate of 200 g r / m', another synthetic resin film was layered on top of this, and the resin composition was thickened according to a conventional method, so that the glass fiber bundles became non-directional. SMCs distributed in the following manner were obtained. This SMC is 93α
Cut the pieces to a size of
0ms average thickness 4.5 m, flange height 7.5
A panel as shown in FIG. 1.2 with a thickness of 8 mm was manufactured.
このパネルの而・j水圧強度は7.5 Ky / cr
lであった。The hydraulic strength of this panel is 7.5 Ky/cr
It was l.
これに対し、雄型の側部迄300gr/−のC8Mで覆
い、この上に2.9に9/−の、2.5cTnの硝子繊
維束で補強されたSMCを4枚重ね、同様に成型して得
られたパネルの耐圧強度はQ、7 Ky / CJであ
った。On the other hand, the sides of the male mold were covered with 300 gr/- C8M, and on top of this, four sheets of SMC reinforced with 2.9 to 9/- glass fiber bundles of 2.5 cTn were stacked and molded in the same way. The compressive strength of the panel obtained was Q, 7 Ky/CJ.
又雄型の側部迄450 g r / m”のC8Mで覆
い、このC8Mに不飽和ポリエステル樹脂100重量部
、酸化マグネシューム0.5重量部、炭酸カルシ−1−
−ム100 重を部#オーブチルパーベンゾエート1重
量部、トーナー3重量部、ステアリン酸亜鉛5重量部よ
シなる樹脂組成物を3.9 Kノ/靜の割合で含浸せし
め、同様にして成型して得られたパネルの耐水圧強度は
0.76 K5+ / caであった。The sides of the male mold were covered with 450 g r/m'' C8M, and this C8M was coated with 100 parts by weight of unsaturated polyester resin, 0.5 parts by weight of magnesium oxide, and 1-calcium carbonate.
-100 parts by weight # A resin composition consisting of 1 part by weight of butyl perbenzoate, 3 parts by weight of toner and 5 parts by weight of zinc stearate was impregnated at a ratio of 3.9 K/m, and molded in the same manner. The resulting panel had a water pressure strength of 0.76 K5+/ca.
」―述したように本発明のSMCは流動性が良好で、強
度の大きい、均質なFRP製品をうろことができ工業上
有益なものであるが、本発明は上述の説明及び実施例に
限定されることなく、本発明の目的と精神を逸脱しない
限度において適宜変更できるものである。例えば本発明
SMCを用いて自動車部品等を製造することもできる。” - As mentioned above, the SMC of the present invention has good fluidity and is industrially useful because it can be used to form homogeneous FRP products with high strength. However, the present invention is limited to the above description and examples. However, changes may be made as appropriate without departing from the purpose and spirit of the present invention. For example, the SMC of the present invention can be used to manufacture automobile parts and the like.
又本マット状物を製造する際長尺硝子繊維束と短硝子繊
維束を交互に供給し、サンドイッチ状とすることもでき
る。Furthermore, when manufacturing the present mat-like product, long glass fiber bundles and short glass fiber bundles can be supplied alternately to form a sandwich-like product.
第1図は本発明のシートモールディングコンパウンドを
用いて製造したFRP製品の平面図、第2図は正面図で
ある。FIG. 1 is a plan view of an FRP product manufactured using the sheet molding compound of the present invention, and FIG. 2 is a front view.
Claims (1)
5〜20 wt%と1〜5cmの硝子繊維束5〜80w
t%とよりなるマットを補強体として使用したことを特
徴とするシートモールディングコンパウンド。Randomly oriented glass fiber bundle 9 with length f3cm or more
5-20wt% and 1-5cm glass fiber bundle 5-80w
A sheet molding compound characterized by using a mat consisting of t% as a reinforcing body.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57132964A JPS5924726A (en) | 1982-07-31 | 1982-07-31 | Sheet molding compound |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57132964A JPS5924726A (en) | 1982-07-31 | 1982-07-31 | Sheet molding compound |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5924726A true JPS5924726A (en) | 1984-02-08 |
JPS6334006B2 JPS6334006B2 (en) | 1988-07-07 |
Family
ID=15093617
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57132964A Granted JPS5924726A (en) | 1982-07-31 | 1982-07-31 | Sheet molding compound |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5924726A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008510844A (en) * | 2004-08-21 | 2008-04-10 | ゼルテクス ゲーエムベーハー ウント コンパニー カーゲー | Manufacturing method of fiber composite material for manufacturing fiber composite parts |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5560531A (en) * | 1978-10-31 | 1980-05-07 | Matsushita Electric Works Ltd | Sheet molding compound |
-
1982
- 1982-07-31 JP JP57132964A patent/JPS5924726A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5560531A (en) * | 1978-10-31 | 1980-05-07 | Matsushita Electric Works Ltd | Sheet molding compound |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008510844A (en) * | 2004-08-21 | 2008-04-10 | ゼルテクス ゲーエムベーハー ウント コンパニー カーゲー | Manufacturing method of fiber composite material for manufacturing fiber composite parts |
Also Published As
Publication number | Publication date |
---|---|
JPS6334006B2 (en) | 1988-07-07 |
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