JP2005146006A - Sheet molding compound - Google Patents

Sheet molding compound Download PDF

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JP2005146006A
JP2005146006A JP2003381231A JP2003381231A JP2005146006A JP 2005146006 A JP2005146006 A JP 2005146006A JP 2003381231 A JP2003381231 A JP 2003381231A JP 2003381231 A JP2003381231 A JP 2003381231A JP 2005146006 A JP2005146006 A JP 2005146006A
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unsaturated polyester
glass fiber
polyester composition
smc
separate film
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Hidenori Nakano
秀憲 中野
Taiji Kanda
泰二 神田
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Housetec Inc
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Housetec Inc
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet molding compound (SMC) capable of obtaining a good molded article without having a protruded glass fiber substrate without being impregnated with an unsaturated polyester composition at the end part of the SMC or the oozing of the unsaturated polyester composition without containing the glass fiber substrate after housing. <P>SOLUTION: This SMC is obtained by narrowing each 10-50 mm at the both ends of an applying width of the unsaturated polyester composition on another separated film against the applying width of the unsaturated polyester on a separate film on which the glass fiber substrate is arranged. During the production process, the end part against the applied width direction of the unsaturated polyester to one piece of separate film on which the glass fiber substrate is arranged and an inside surface of a guide plate of the glass fiber substrate are installed at a flash state. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、シートモールディングコンパウンド(以下、SMCと称する)にの関する。   The present invention relates to a sheet molding compound (hereinafter referred to as SMC).

SMCは、ビニル系単量体に希釈させた不飽和ポリエステルに、添加剤として低収縮剤、硬化剤、重合禁止剤、充填剤、増粘剤、離型剤、さらには着色剤等を混ぜた不飽和ポリエステル組成物にガラス繊維基材を含浸させてシート状にして両側をキャリアフィルムで覆い、熟成して半固形化させた複合プラスチック成形材料である。このSMCは、金型に載置して加圧加熱成形することにより、機械的強度に優れた性質を有する強化プラスチック(FRP)が得られ、浴槽、パネル組立式貯水槽、浄化槽等のSMC成形品として製造される。   SMC is mixed with unsaturated polyester diluted in vinyl monomer with additives such as low shrinkage agent, curing agent, polymerization inhibitor, filler, thickener, release agent, and colorant. It is a composite plastic molding material obtained by impregnating an unsaturated polyester composition with a glass fiber substrate to form a sheet, covering both sides with a carrier film, and aging and semi-solidifying. This SMC can be reinforced plastic (FRP) with excellent mechanical strength by placing it on a mold and pressurizing and heating. SMC molding for bathtubs, panel-assembled water tanks, septic tanks, etc. Manufactured as a product.

図1にSMC製造装置の概略模式図を示す。SMCの製造は図1のような装置により、一般に次のように行われる。2枚のセパレートフィルム1、1’のそれぞれ片面に図示しない供給装置により液状の不飽和ポリエステル組成物2、2’を供給し、塗布装置であるドクターブレード6、6’を用いて粘性のある液状不飽和ポリエステル組成物1、1’をほぼ均一厚に伸展させて塗布する。このときに不飽和ポリエステル組成物の塗布幅は、所定の幅に設置された側壁ガイド8により制御される。次に強化材であるガラスロービング3をチョッパー4で裁断したガラス繊維基材を一方のセパレートフィルム1’の塗布面に均一に配置する。この均一な配置を乱さないようにしながらガラスロービング3の上から更に残りのセパレートフィルム1を重ね、圧縮用ロール等の含浸装置5によりガラスロービング3に液状不飽和ポリエステル組成物2、2’を十分含浸させる。これを巻き取り装置7でロール状に巻き取り、図示しない加熱装置により40℃前後で十数時間加熱する。加熱により液状不飽和ポリエステル組成物にべたつきがなくなるまで粘度を増加させて製造を完了する。   FIG. 1 shows a schematic diagram of an SMC manufacturing apparatus. The production of SMC is generally performed as follows using an apparatus as shown in FIG. A liquid unsaturated polyester composition 2, 2 ′ is supplied to one side of each of the two separate films 1, 1 ′ by a supply device (not shown), and a viscous liquid is used using a doctor blade 6, 6 ′ as a coating device. Unsaturated polyester composition 1, 1 'is applied to a substantially uniform thickness. At this time, the application width of the unsaturated polyester composition is controlled by the side wall guide 8 installed at a predetermined width. Next, the glass fiber base material obtained by cutting the glass roving 3 as the reinforcing material with the chopper 4 is uniformly arranged on the coating surface of the one separate film 1 ′. The remaining separate film 1 is further stacked on the glass roving 3 while not disturbing the uniform arrangement, and the liquid unsaturated polyester composition 2, 2 ′ is sufficiently applied to the glass roving 3 by an impregnation device 5 such as a compression roll. Impregnate. This is wound up in a roll shape by the winding device 7 and heated at around 40 ° C. for about 10 hours by a heating device (not shown). The production is completed by increasing the viscosity until the liquid unsaturated polyester composition is not sticky by heating.

セパレートフィルム上に均一に塗布した不飽和ポリエステル組成物とこの塗布面に散布するガラス繊維基材は、散布時にガラス繊維基材が塗布面からはみ出すため、これを防止するために、一般にガラス繊維基材を配置する1枚のセパレートフィルムへの不飽和ポリエステル組成物の塗布幅方向に対する端部の高さ方向にガラス繊維基材誘導用板9を設置している。   In order to prevent the unsaturated polyester composition uniformly coated on the separate film and the glass fiber base material to be spread on the coated surface from spreading out from the coated surface at the time of the dispersion, the glass fiber base is generally used. The glass fiber base material guide plate 9 is installed in the height direction of the end with respect to the application width direction of the unsaturated polyester composition to one separate film on which the material is disposed.

しかしながら、従来のSMC製造方法では、上記のガラス繊維基材誘導板と不飽和ポリエステル組成物塗布端面との調整を誤った場合等には、不飽和ポリエステル組成物に含浸されていないガラス繊維基材のはみ出しや収納後にガラス繊維基材を含まない不飽和ポリエステル組成物の染み出し等の問題が発生し、成形時に不飽和ポリエステル組成物に含浸されていないガラス繊維基材が混入した場合には成形品のフクレ・外観不良等の欠陥となり、ガラス繊維基材を含まない不飽和ポリエステル組成物が混入した場合は、ピンホール・強度低下等の欠陥となる。   However, in the conventional SMC manufacturing method, if the adjustment of the glass fiber substrate guide plate and the unsaturated polyester composition application end face is wrong, the glass fiber substrate not impregnated with the unsaturated polyester composition is used. Molding occurs when glass fiber base material that is not impregnated in the unsaturated polyester composition is mixed at the time of molding. When the unsaturated polyester composition which does not contain a glass fiber base material is mixed, defects such as pinholes and strength reduction occur.

即ち、ガラス繊維基材誘導板を、ガラス繊維基材を配置する1枚のセパレートフィルムへの不飽和ポリエステル組成物の塗布幅方向に対する端部とガラス繊維基材誘導板の内面とが面位置に設置した場合、SMCはガラス繊維基材散布後の圧縮用ロール等による含浸装置にて圧縮され、ガラス繊維基材を含まない不飽和ポリエステル組成物が染み出してしまう。そこで、ガラス繊維基材誘導板は、一般的に不飽和ポリエステル組成物塗布端面に対し若干外側に設置されるが、この調整を誤った場合には、上記の不具合が発生し成形欠陥の原因となる。   That is, the end portion of the glass fiber substrate guide plate with respect to the width direction of application of the unsaturated polyester composition to one separate film on which the glass fiber substrate is disposed and the inner surface of the glass fiber substrate guide plate are in the surface position. When installed, the SMC is compressed by an impregnation apparatus using a compression roll or the like after spraying the glass fiber base material, and the unsaturated polyester composition not containing the glass fiber base material oozes out. Therefore, the glass fiber base guide plate is generally installed slightly outside the unsaturated polyester composition coating end face, but if this adjustment is wrong, the above-mentioned problems occur and cause molding defects. Become.

本発明はかかる課題に対し鑑みてなされたものであり、ガラス繊維基材を配置する1枚のセパレートフィルムへの不飽和ポリエステル組成物の塗布幅方向に対する端部とガラス繊維基材誘導板の内面とが面位置に設置しても、不飽和ポリエステル組成物に含浸されていないガラス繊維基材のはみ出しや収納後にガラス繊維基材を含まない不飽和ポリエステル組成物の染み出し等の問題が発生しないSMCを製造することを目的とする。   This invention is made | formed in view of this subject, The edge part with respect to the application | coating width direction of the unsaturated polyester composition to one separate film which arrange | positions a glass fiber base material, and the inner surface of a glass fiber base material guide plate Even if it is installed on the surface, there will be no problems such as protrusion of the glass fiber base material not impregnated with the unsaturated polyester composition or exudation of the unsaturated polyester composition not containing the glass fiber base material after storage. The object is to produce SMC.

本発明は、ガラス繊維基材を配置する1枚のセパレートフィルムへの不飽和ポリエステル組成物塗布幅に対し、もう1枚のセパレートフィルムへの不飽和ポリエステル組成物塗布幅の両端部を各々10〜50mm狭くしてなるシートモールディングコンパウンド(SMC)に関する。   In the present invention, the unsaturated polyester composition application width to one separate film is set to 10 to 10 at both ends of the unsaturated polyester composition application width to another separate film. The present invention relates to a sheet molding compound (SMC) made 50 mm narrower.

SMCの製造方法において、ガラス繊維基材を配置する1枚のセパレートフィルムへの不飽和ポリエステル組成物塗布幅に対し、もう1枚のセパレートフィルムへの不飽和ポリエステル組成物塗布幅の両端部を各々10〜50mm狭くし且つガラス繊維基材を配置する1枚のセパレートフィルムへの不飽和ポリエステル組成物の塗布幅方向に対する端部とガラス繊維基材誘導板の内面とが面位置に設置することにより、SMC端部が良好でピンホール・フクレ等の成形欠陥の発生を低減できる。   In the manufacturing method of SMC, each of the both ends of the unsaturated polyester composition application width to the other separate film is applied to the unsaturated polyester composition application width to one separate film on which the glass fiber base material is disposed. By placing the end portion of the unsaturated polyester composition on one separate film narrowed by 10 to 50 mm and disposing the glass fiber substrate in the width direction and the inner surface of the glass fiber substrate guide plate at the surface position The end of the SMC is good and the occurrence of molding defects such as pinholes and blisters can be reduced.

本発明におけるSMCは、セパレートフィルムの片面に液状不飽和ポリエステル組成物を塗布する塗布装置と、1枚のセパレートフィルムの該液状不飽和ポリエステル組成物を塗布した面にガラスロービングを1インチ(25.4mm)以下に裁断し、ガラス繊維基材として均一に散布・供給する供給装置と、該ガラス繊維基材の上から液状不飽和ポリエステル組成物を塗布したもう1枚のセパレートフィルムを塗布面が対向するように重ねてガラス繊維基材を挟み、ガラス繊維基材に液状不飽和ポリエステル組成物を含浸させる含浸装置と、該ガラス繊維基材を挟んだセパレートフィルムの巻き取り装置とを含むSMCの製造装置を用い、2枚のセパレートフィルムのそれぞれ片面に塗布装置を用いて液状不飽和ポリエステル組成物を塗布し、次いで1枚のセパレートフィルムの該液状不飽和ポリエステル組成物塗布面にガラス繊維基材を配置し、該ガラス繊維基材の上からもう一方のセパレートフィルムを塗布面が対向するように重ねてガラス繊維基材を挟み、ガラス繊維基材に該液状不飽和ポリエステル組成物を含浸させた後、該ガラス繊維基材を挟んだセパレートフィルムを巻き取り、巻き取ったセパレートフィルムを加熱するSMCの製造方法において、SMC端部が、不飽和ポリエステル組成物に含浸されていないガラス繊維基材のはみ出しや収納後にガラス繊維基材を含まない不飽和ポリエステル組成物の染み出しのないSMCを製造する製造方法することができる。   In the SMC of the present invention, a coating apparatus for applying the liquid unsaturated polyester composition on one side of a separate film and a glass roving of 1 inch (25.25) on the surface of the separate film on which the liquid unsaturated polyester composition is applied. 4 mm) or less, and the coating surface is opposite to the supply device that is uniformly dispersed and supplied as the glass fiber substrate, and another separate film coated with the liquid unsaturated polyester composition from above the glass fiber substrate. And a glass fiber base material so that the glass fiber base material is impregnated and impregnating the glass fiber base material with the liquid unsaturated polyester composition, and a separate film winding device for sandwiching the glass fiber base material. Using a device, apply a liquid unsaturated polyester composition to each side of two separate films using a coating device. Then, a glass fiber substrate is disposed on the surface of the separate unsaturated film on which the liquid unsaturated polyester composition is applied, and the other separate film is laminated on the glass fiber substrate so that the application surface faces the glass. A method for producing SMC in which a fiber base material is sandwiched, the glass fiber base material is impregnated with the liquid unsaturated polyester composition, a separate film sandwiching the glass fiber base material is wound, and the wound separate film is heated In SMC, the manufacturing method of manufacturing SMC in which the end portion of the SMC does not bleed out the glass fiber base material not impregnated with the unsaturated polyester composition and does not bleed out the unsaturated polyester composition not containing the glass fiber base material after storage be able to.

次に本発明の実施の形態ついて具体的に説明する。   Next, embodiments of the present invention will be specifically described.

本発明におけるSMCは、ガラス繊維基材を配置する1枚のセパレートフィルムへの不飽和ポリエステル組成物塗布幅に対し、もう1枚のセパレートフィルムへの不飽和ポリエステル組成物塗布幅の両端部を各々10〜50mm狭くしてなるものであるが、その製造工程においてガラス繊維基材を配置する1枚のセパレートフィルムへの不飽和ポリエステル組成物の塗布幅方向に対する端部とガラス繊維基材誘導板の内面とが面位置に設置される。これにより、不飽和ポリエステル組成物に含浸されていないガラス繊維基材のはみ出しや収納後にガラス繊維基材を含まない不飽和ポリエステル組成物の染み出しが発生しないSMCを得ることができる。なお、製造工程のほとんどは図1に示すとおりである。   In the SMC of the present invention, both ends of the unsaturated polyester composition application width to the other separate film are applied to the unsaturated polyester composition application width to one separate film on which the glass fiber substrate is disposed. Although it is narrowed by 10 to 50 mm, in the manufacturing process, the end of the unsaturated polyester composition applied to one separate film on which the glass fiber base material is arranged and the width direction of the glass fiber base material guide plate The inner surface is installed at the surface position. Thereby, SMC which does not generate | occur | produce the overflow of the glass fiber base material which is not impregnated with the unsaturated polyester composition, and the bleeding of the unsaturated polyester composition which does not contain a glass fiber base material after accommodation can be obtained. Most of the manufacturing process is as shown in FIG.

図2に本発明のSMC製造方法により得られるSMC断面の構成模式図を示す。ここに示されるように、ガラス繊維基材3を配置しておく1枚のセパレートフィルム1’への不飽和ポリエステル組成物塗布幅に対し、もう1枚のセパレートフィルム1への不飽和ポリエステル組成物2塗布幅の両端部を各々10〜50mm狭くし且つガラス繊維基材を配置しておく1枚のセパレートフィルム1’への不飽和ポリエステル組成物2’の塗布幅方向に対する端部とガラス繊維基材誘導板の内面とが面位置に設置することにより、圧縮用ロール等による含浸装置にて圧縮される前のSMC端部の不飽和ポリエステル組成物は、両端部を各々10〜50mm半分の量となり、圧縮用ロール等による含浸装置にて圧縮された後にもガラス繊維基材を含まない不飽和ポリエステル組成物の染み出しが発生しない。   FIG. 2 shows a schematic configuration diagram of an SMC cross section obtained by the SMC manufacturing method of the present invention. As shown here, the unsaturated polyester composition applied to another separate film 1 with respect to the width of the unsaturated polyester composition applied to one separate film 1 ′ on which the glass fiber substrate 3 is disposed. Two ends of the coating width are narrowed by 10 to 50 mm, respectively, and an end portion of the unsaturated polyester composition 2 'on the one separating film 1' on which the glass fiber substrate is disposed and the glass fiber base The unsaturated polyester composition at the end of the SMC before being compressed by the impregnating apparatus such as a compression roll by placing the inner surface of the material guide plate at the surface position is 10 to 50 mm half of each end. Thus, even after being compressed by an impregnation apparatus using a compression roll or the like, exudation of the unsaturated polyester composition not containing the glass fiber substrate does not occur.

また、ガラス繊維基材誘導は、ガラス繊維基材を配置する1枚のセパレートフィルムへの不飽和ポリエステル組成物の塗布幅方向に対する端部とガラス繊維基材誘導板の内面とが面位置に設置されているため、不飽和ポリエステル組成物に含浸されていないガラス繊維基材のはみ出しのない良好なSMCが得られる。   In addition, the glass fiber base material guide is placed at the surface position of the end of the unsaturated polyester composition applied to the separate film on which the glass fiber base material is placed and the inner surface of the glass fiber base material guide plate. Therefore, a good SMC in which the glass fiber base not impregnated with the unsaturated polyester composition does not protrude is obtained.

本発明の液状不飽和ポリエステル組成物は、ビニル系単量体で希釈された不飽和ポリエステルを主成分とし、これに熱可塑性樹脂、有機物充填剤を含有させ、均一に混合させたものである。液状不飽和ポリエステル樹脂組成物には、以上の成分の他にさらに添加剤として硬化剤、重合禁止剤、増粘剤、離カ型剤、さらには必要に応じて着色剤等が配合される。なお、上記した添加剤の添加順序は、特に制限されるものでない。   The liquid unsaturated polyester composition of the present invention comprises an unsaturated polyester diluted with a vinyl monomer as a main component, contains a thermoplastic resin and an organic filler, and is uniformly mixed. In addition to the above components, the liquid unsaturated polyester resin composition further contains a curing agent, a polymerization inhibitor, a thickening agent, a release agent, and a colorant as necessary. The order of addition of the above-described additives is not particularly limited.

上記の液状不飽和ポリエステル組成物のうち、不飽和ポリエステルは、多価アルコールと不飽和多塩基酸、飽和二塩基酸を重縮合させて得られるものであり、多価アルコールには、エチレングリコール、プロピレングリコール、1,4ーブタンジオール、ジエチレングリコール、ジプロピレングリコール、トリエチレングリコール、ペンタンジオール、1,6ヘキサンジオール、ネオペンチルグリコール、水素化ビスフェノールA、ビスフェノールA、グリセリン等が用いられる。不飽和多塩基酸には、無水マレイン酸、フマル酸、シトラコン酸、イタコン酸等が用いられ、飽和二塩基酸には、オルソフタル酸、イソフタル酸、テレフタル酸、アジピン酸、テトラヒドロ無水フタル酸、セバシン酸、コハク酸、テトラクロロ無水フタル酸、アゼライン酸等が用いられる。   Of the above liquid unsaturated polyester compositions, the unsaturated polyester is obtained by polycondensation of a polyhydric alcohol with an unsaturated polybasic acid and a saturated dibasic acid. The polyhydric alcohol includes ethylene glycol, Propylene glycol, 1,4-butanediol, diethylene glycol, dipropylene glycol, triethylene glycol, pentanediol, 1,6 hexanediol, neopentyl glycol, hydrogenated bisphenol A, bisphenol A, glycerin and the like are used. Unsaturated polybasic acids include maleic anhydride, fumaric acid, citraconic acid, itaconic acid, etc., and saturated dibasic acids include orthophthalic acid, isophthalic acid, terephthalic acid, adipic acid, tetrahydrophthalic anhydride, sebacin Acid, succinic acid, tetrachlorophthalic anhydride, azelaic acid and the like are used.

重縮合で得られた不飽和ポリエステルを希釈させるビニル系単量体は、重合性の二重結合を有しているものであり、重合性のビニル系単量体には、スチレン、クロロスチレン、t−ブチルスチレン、メチルアクリレート、メチルメタクリレート、ジアリルフタレート、ジアリルイソフタレート、トリアリルシアヌレート、トリアリルイソシアヌレート、ジビニルベンゼン、ビニルトルエン等が用いられる。   The vinyl monomer for diluting the unsaturated polyester obtained by polycondensation has a polymerizable double bond. Examples of the polymerizable vinyl monomer include styrene, chlorostyrene, t-Butylstyrene, methyl acrylate, methyl methacrylate, diallyl phthalate, diallyl isophthalate, triallyl cyanurate, triallyl isocyanurate, divinylbenzene, vinyltoluene and the like are used.

上記のようにして得られるビニル系単量体で希釈された不飽和ポリエステルには、必須成分として熱可塑性樹脂が加えられる。熱可塑性樹脂は、成形品の収縮を防止する低収縮剤の役目を果たすものであり、この熱可塑性樹脂として、ポリスチレン、ポリ酢酸ビニル、ブタジエンゴム、スチレン/酢酸ビニル、ポリメチルメタクリレート等を用いることができる。そしてこれら熱可塑性樹脂は、ビニル系単量体で希釈された不飽和ポリエスエルとの相溶性をよくするために、ビニル系単量体で溶解させて溶液として用いられる。   A thermoplastic resin is added as an essential component to the unsaturated polyester diluted with the vinyl monomer obtained as described above. The thermoplastic resin serves as a low shrinkage agent that prevents the shrinkage of the molded product, and as this thermoplastic resin, polystyrene, polyvinyl acetate, butadiene rubber, styrene / vinyl acetate, polymethyl methacrylate, or the like is used. Can do. These thermoplastic resins are dissolved in a vinyl monomer and used as a solution in order to improve the compatibility with the unsaturated polyester diluted with the vinyl monomer.

また、ビニル系単量体で希釈された不飽和ポリエステルには、充填剤が加えられる。充填剤としては、通常SMCに広く用いられる炭酸カルシウム、水酸化アルミニウム、タルク、シリカ等を用いることができる。   In addition, a filler is added to the unsaturated polyester diluted with the vinyl monomer. As the filler, calcium carbonate, aluminum hydroxide, talc, silica, etc., which are generally widely used for SMC can be used.

上記の液状不飽和ポリエステル組成物には、補強材であるガラス繊維基材が含浸され、増粘剤により熟成工程を経て、増粘させSMCとなる。   The liquid unsaturated polyester composition is impregnated with a glass fiber base material that is a reinforcing material, and is thickened with a thickener through an aging step to become SMC.

液状不飽和ポリエステル組成物には、さらに硬化剤、重合禁止剤、増粘剤、離型剤、さらには着色剤等の添加剤が配合される。そして、硬化剤には、ターシャリー(tと略す)ーブチルパーオキシベンゾエート、ベンゾイルパーオキサイド、t−ブチルパーオキシイソプロピルカーボーネート、t−ヘキシルパーオキシイソプロピルカーボーネート、t−アミルパーオキシベンゾエート、またはt−ヘキシルパーオキシベンゾエート等の有機過酸化物が用いられる。   The liquid unsaturated polyester composition is further blended with additives such as a curing agent, a polymerization inhibitor, a thickener, a release agent, and a colorant. The curing agents include tertiary (abbreviated as t) -butyl peroxybenzoate, benzoyl peroxide, t-butyl peroxyisopropyl carbonate, t-hexyl peroxyisopropyl carbonate, t-amyl peroxybenzoate. Or an organic peroxide such as t-hexylperoxybenzoate.

また、重合禁止剤には、パラベンゾキノン、ヒドロキノン、メタジニトロベンゼン、パラフェニルジアミン、または2,6ジtーブチル4ーメチルフェノール等が用いられ、増粘剤には、アルカリ土類金属の酸化物または水酸化物として、酸化マグネシウム、水酸化マグネシウム、酸化カルシウム、または水酸化カルシウム等、離型剤には、ステアリン酸、オレイン酸、ステアリン酸亜鉛、ステアリン酸カルシウム、またはステアリン酸マグネシウム等、着色剤には、顔料または染料等が用いられる。   In addition, as the polymerization inhibitor, parabenzoquinone, hydroquinone, metadinitrobenzene, paraphenyldiamine, or 2,6 di-tert-butyl 4-methylphenol is used, and as the thickener, an alkaline earth metal oxide or As a hydroxide, magnesium oxide, magnesium hydroxide, calcium oxide, or calcium hydroxide, etc., as a release agent, as a colorant, such as stearic acid, oleic acid, zinc stearate, calcium stearate, or magnesium stearate A pigment or a dye is used.

以上のような成分の液状不飽和ポリエステル組成物を、2枚のセパレートフィルムのそれぞれ片面に塗布装置を用いて塗布し、次いで1枚のセパレートフィルムの該液状不飽和ポリエステル組成物塗布面にガラス繊維基材を配置し、該ガラス繊維基材の上からもう一方のセパレートフィルムを塗布面が対向するように重ねてガラス繊維基材を挟み、ガラス繊維基材に該液状不飽和ポリエステル組成物を含浸させた後、該ガラス繊維基材を挟んだセパレートフィルムを巻き取り、巻き取ったセパレートフィルムを加熱し、本発明のSMCが得られる。   The liquid unsaturated polyester composition having the components as described above is applied to one side of each of the two separate films using a coating apparatus, and then the glass fiber is applied to the surface of the separate film to which the liquid unsaturated polyester composition is applied. Place the base material, put the other separate film on top of the glass fiber base material so that the coated surface faces each other, sandwich the glass fiber base material, and impregnate the glass fiber base material with the liquid unsaturated polyester composition Then, the separate film sandwiching the glass fiber substrate is wound up, and the separated film is heated to obtain the SMC of the present invention.

実施例1〜5(SMCの作製)
表1に示す組成の液状不飽和ポリエステル樹脂組成物をベースに、図1に示されるようなSMC製造装置(米国 エンテック社製)にて、ガラス繊維基材を配置する1枚のセパレートフィルムへの不飽和ポリエステル組成物の塗布幅方向に対する端部とガラス繊維基材誘導板の内面とが面位置に設置し、ガラス繊維基材を配置する1枚のセパレートフィルムへの不飽和ポリエステル組成物塗布幅に対し、もう1枚のセパレートフィルムへの不飽和ポリエステル組成物塗布幅の両端部を各々10mm、25mm、50mmの3種類に可変し、更にガラス繊維含有率の設定を替えてSMCを作製した。
Examples 1-5 (Production of SMC)
Based on the liquid unsaturated polyester resin composition having the composition shown in Table 1, an SMC manufacturing apparatus (manufactured by Entec Inc., USA) as shown in FIG. Unsaturated polyester composition application width to one separate film in which the end of the unsaturated polyester composition with respect to the application width direction and the inner surface of the glass fiber substrate guide plate are installed at the surface position and the glass fiber substrate is disposed On the other hand, both ends of the unsaturated polyester composition application width to another separate film were changed to three types of 10 mm, 25 mm, and 50 mm, respectively, and the setting of the glass fiber content was changed to produce SMC.

なお、各成分の材料には次のものを使用した。ビニル系単量体のうちスチレンで希釈された不飽和ポリエステル(ポリセットPSー9415、日立化成工業株式会社製、商品名)、熱可塑性樹脂にポリスチレン(デンカスチロール、電気化学工業株式会社製、商品名)、硬化剤にt−ブチルパーオキシベンゾエート(パーブチルZ、日本油脂株式会社製、商品名)、重合禁止剤にパラベンゾキノン(PBQ、精工化学株式会社製、商品名)、離型剤にステアリン酸亜鉛(ジンクステアレート、日本油脂株式会社製、商品名)、充填材として水酸化アルミニウム(CW308、住友化学株式会社製、商品名)、増粘剤に酸化マグネシウム(キョウワマグ#20、協和化学工業株式会社製、商品名)及び浴槽用ガラスロービング(RS 480PG−580JH、日東紡績株式会社製、商品名)を用いた。   In addition, the following were used for the material of each component. Unsaturated polyester (Polyset PS-9415, manufactured by Hitachi Chemical Co., Ltd., trade name) diluted with styrene among vinyl monomers, polystyrene (Denkastyrol, manufactured by Denki Kagaku Kogyo Co., Ltd., merchandise) Name), t-butyl peroxybenzoate (perbutyl Z, manufactured by NOF Corporation, trade name) as a curing agent, parabenzoquinone (PBQ, manufactured by Seiko Chemical Co., Ltd., trade name) as a polymerization inhibitor, and stearin as a release agent. Zinc oxide (zinc stearate, manufactured by Nippon Oil & Fats Co., Ltd., trade name), aluminum hydroxide (CW308, manufactured by Sumitomo Chemical Co., Ltd., trade name) as filler, magnesium oxide (Kyowa Mug # 20, Kyowa Chemical Industry) as thickener Co., Ltd., trade name) and bathtub glass roving (RS 480PG-580JH, made by Nitto Boseki Co., Ltd., trade name) It was used.

このようにして作製したSMCを目視にて端部の不飽和ポリエステル組成物に含浸されていないガラス繊維基材のはみ出し具合、即ち端部ガラス繊維の未含浸とガラス繊維基材を含まない不飽和ポリエステル組成物の染み出し具合、即ち端部ガラス繊維を含まない樹脂状態を観察した。更に、成形時のピンホール・フクレ等の成形欠陥発生率を評価した。   The SMC produced in this way is visually exposed to the end of the glass fiber base material not impregnated with the unsaturated polyester composition at the end, that is, the end glass fiber is not impregnated and the glass fiber base material is not included. The degree of seeping out of the polyester composition, that is, the resin state containing no end glass fibers was observed. Furthermore, the incidence of molding defects such as pinholes and blisters during molding was evaluated.

Figure 2005146006
Figure 2005146006

得られたSMCは、ガラス繊維基材を配置する1枚のセパレートフィルムへの不飽和ポリエステル組成物塗布幅に対し、もう1枚のセパレートフィルムへの不飽和ポリエステル組成物塗布幅の両端部を各々10〜50mmの範囲で狭くすることによりガラス繊維含有率を変えても良好なSMCが得られ、成形欠陥の発生もなかった。   The obtained SMC has both ends of the width of the unsaturated polyester composition applied to the other separate film with respect to the width of the unsaturated polyester composition applied to the separate film on which the glass fiber substrate is disposed. Even if the glass fiber content was changed by narrowing in the range of 10 to 50 mm, good SMC was obtained, and there was no generation of molding defects.

比較例1〜4
前述の実施例と同様にして表2に示すように、セパレートフィルムの塗布短縮幅を変えてSMCを作製し評価した。
Comparative Examples 1-4
As shown in Table 2, SMCs were produced and evaluated in the same manner as in the above-described examples, while changing the coating shortening width of the separate film.

その結果、表2に示すようにガラス繊維基材を配置する1枚のセパレートフィルムへの不飽和ポリエステル組成物塗布幅に対し、もう1枚のセパレートフィルムへの不飽和ポリエステル組成物塗布幅の両端部を0〜10mm未満狭くした場合においては、ガラス繊維基材を配置する1枚のセパレートフィルムへの不飽和ポリエステル組成物の塗布幅方向に対する端部とガラス繊維基材誘導板の内面とが面位置に設置することにより、不飽和ポリエステル組成物に含浸されていないガラス繊維基材のはみ出し具合、即ち端部ガラス繊維の未含浸は良好なものの、ガラス繊維基材を含まない不飽和ポリエステル組成物の染み出し具合、即ち端部ガラス繊維を含まない樹脂状態において若干の染み出しが観察された。   As a result, as shown in Table 2, both ends of the width of the unsaturated polyester composition applied to one separate film with respect to the width of the unsaturated polyester composition applied to one separate film in which the glass fiber substrate is disposed When the portion is narrowed by less than 0 to 10 mm, the end of the unsaturated polyester composition applied to one separate film on which the glass fiber base material is disposed and the inner surface of the glass fiber base material guide plate face each other. The glass fiber base material that is not impregnated with the unsaturated polyester composition by being installed at the position, that is, the end glass fiber is not impregnated well, but the unsaturated polyester composition does not contain the glass fiber base material. A slight exudation was observed in the state of exudation, that is, in the resin state not containing the end glass fibers.

また、ガラス繊維基材を配置する1枚のセパレートフィルムへの不飽和ポリエステル組成物塗布幅に対し、もう1枚のセパレートフィルムへの不飽和ポリエステル組成物塗布幅の両端部を55mm以上狭くした場合においては、端部の不飽和ポリエステル組成物量が少なく端部ガラス繊維基材の未含浸が観察され、いずれの場合においても成形欠陥は2倍以上発生した。   Also, when both ends of the unsaturated polyester composition coating width on one separate film are made narrower by 55 mm or more than the unsaturated polyester composition coating width on one separate film on which the glass fiber substrate is disposed In No. 1, the amount of the unsaturated polyester composition at the end was small and unimpregnation of the end glass fiber substrate was observed, and in each case, molding defects occurred twice or more.

Figure 2005146006
Figure 2005146006

本発明の実施例で用いたSMC製造装置SMC manufacturing apparatus used in an embodiment of the present invention 本発明のSMC製造方法におけるSMC断面模式図SMC cross-sectional schematic diagram in the SMC manufacturing method of the present invention

符号の説明Explanation of symbols

1、1’:セパレートフィルム
2、2’:不飽和ポリエステル組成物
3:ガラスロービング
4:チョッパー
5:含浸装置
5、6’:ドクターブレード
7:巻き取り装置
8,8’:側壁ガイド
9:ガラス繊維基材誘導板




1, 1 ': Separate film 2, 2': Unsaturated polyester composition 3: Glass roving 4: Chopper 5: Impregnation device 5, 6 ': Doctor blade 7: Winding device 8, 8': Side wall guide 9: Glass Fiber base plate




Claims (1)

本発明は、ガラス繊維基材を配置する1枚のセパレートフィルムへの不飽和ポリエステル組成物塗布幅に対し、もう1枚のセパレートフィルムへの不飽和ポリエステル組成物塗布幅の両端部を各々10〜50mm狭くしてなるシートモールディングコンパウンド。


In the present invention, the unsaturated polyester composition application width to one separate film is set to 10 to 10 at both ends of the unsaturated polyester composition application width to another separate film. A sheet molding compound that is 50mm narrower.


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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015060299A1 (en) * 2013-10-22 2015-04-30 三菱レイヨン株式会社 Prepreg production method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015060299A1 (en) * 2013-10-22 2015-04-30 三菱レイヨン株式会社 Prepreg production method
JP5822033B2 (en) * 2013-10-22 2015-11-24 三菱レイヨン株式会社 Manufacturing method of prepreg

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