JPH0688311B2 - Method for producing fiber-reinforced composite molded body - Google Patents

Method for producing fiber-reinforced composite molded body

Info

Publication number
JPH0688311B2
JPH0688311B2 JP1160627A JP16062789A JPH0688311B2 JP H0688311 B2 JPH0688311 B2 JP H0688311B2 JP 1160627 A JP1160627 A JP 1160627A JP 16062789 A JP16062789 A JP 16062789A JP H0688311 B2 JPH0688311 B2 JP H0688311B2
Authority
JP
Japan
Prior art keywords
resin
thermoplastic resin
coating
uncured
composite molded
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
Application number
JP1160627A
Other languages
Japanese (ja)
Other versions
JPH0326521A (en
Inventor
達美 岩田
勲 汲田
Original Assignee
宇部日東化成株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 宇部日東化成株式会社 filed Critical 宇部日東化成株式会社
Priority to JP1160627A priority Critical patent/JPH0688311B2/en
Publication of JPH0326521A publication Critical patent/JPH0326521A/en
Publication of JPH0688311B2 publication Critical patent/JPH0688311B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/88Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/901Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies
    • B29C48/903Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies externally
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/06Rod-shaped
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/88Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911Cooling
    • B29C48/9115Cooling of hollow articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/88Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/919Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/88Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911Cooling
    • B29C48/9115Cooling of hollow articles
    • B29C48/912Cooling of hollow articles of tubular films
    • B29C48/913Cooling of hollow articles of tubular films externally

Description

【発明の詳細な説明】 《産業上の利用分野》 本発明は、繊維強化複合成形体の製造方法に関し、とり
わけ内部の繊維強化樹脂中の補強繊維の筋状の浮き出し
による外観不良を防止する製造方法に関する。
TECHNICAL FIELD The present invention relates to a method for producing a fiber-reinforced composite molded article, and in particular, production for preventing appearance defects due to streaky embossing of reinforcing fibers in the fiber-reinforced resin inside. Regarding the method.
《発明の背景》 長尺状の補強材料に熱硬化性樹脂を含浸し、これを所定
の形状に賦形硬化した繊維強化熱硬化性樹脂の引抜成形
品は、軽量性,高強度性,高復元性,高剛性,耐蝕性,
非導電性などの優れた性質から種々の用途に使用されて
いる。
<< Background of the Invention >> A pultruded product of a fiber-reinforced thermosetting resin obtained by impregnating a long reinforcing material with a thermosetting resin and shape-curing this into a predetermined shape is lightweight, high in strength, and high in strength. Restoration, high rigidity, corrosion resistance,
It is used in various applications due to its excellent properties such as non-conductivity.
従来において、この種の引抜成形品は、ガラス繊維ロー
ビングなどの補強繊維に未硬化状の熱硬化性樹脂を含浸
し、これを加熱された金型中で硬化させながら引取る製
造方法が一般的であるが、金型からの引取抵抗の問題等
から、引抜速度は極端に遅く、生産性に問題があった。
Conventionally, a pultruded article of this type is generally manufactured by impregnating reinforcing fibers such as glass fiber roving with an uncured thermosetting resin, and pulling it while curing it in a heated mold. However, the drawing speed was extremely slow due to the problem of pulling resistance from the mold, and there was a problem in productivity.
本出願人は、この問題を解決できる方法として、補強繊
維に未硬化状の熱硬化性樹脂を含浸させた混合物を熱可
塑性樹脂で被覆し、しかる後、内部未硬化状の熱硬化性
樹脂を硬化することによって、熱可塑性樹脂被覆に上記
の金型の役割をもたせることによって生産性を著しく向
上できる方法を特公昭56-20188により既に提供してい
る。
The Applicant, as a method of solving this problem, a mixture of reinforcing fibers impregnated with an uncured thermosetting resin is coated with a thermoplastic resin, and then an internal uncured thermosetting resin is applied. Japanese Patent Publication No. 56-20188 has already provided a method in which the productivity can be markedly improved by making the thermoplastic resin coating play the role of the above-mentioned mold by curing.
この方法によれば、高い生産効率で繊維強化熱硬化性樹
脂製品が製造できるとともに、得られる製品も外周に厚
みが0.5〜1.0mm程度の熱可塑性樹脂被覆層を有している
ので、繊維強化熱硬化性樹脂を有効に保護して、耐候
性,耐蝕,耐水性,耐曲げ性等も向上できる。
According to this method, a fiber-reinforced thermosetting resin product can be produced with high production efficiency, and since the obtained product also has a thermoplastic resin coating layer having a thickness of about 0.5 to 1.0 mm on the outer periphery, fiber-reinforced By effectively protecting the thermosetting resin, weather resistance, corrosion resistance, water resistance, bending resistance, etc. can be improved.
しかしながら、外径寸法が規制され、かつ所定の高い剛
性が要求される場合は、曲げ剛性などの強度に寄与する
繊維強化熱硬化性樹脂(以下FRPと称す)部分の比率を
高める必要がある。
However, when the outer diameter dimension is regulated and a predetermined high rigidity is required, it is necessary to increase the ratio of the fiber reinforced thermosetting resin (hereinafter referred to as FRP) portion that contributes to the strength such as bending rigidity.
ところが、FRP部分の比率を高めると、表面の熱可塑性
樹脂被覆層の厚みを薄くすると、FRP部を硬化した後の
熱可塑性樹脂被覆層の表面に補強繊維の浮き出しを反映
した凸状が発生して、外観上問題があった。
However, if the proportion of the FRP portion is increased, and the thickness of the thermoplastic resin coating layer on the surface is reduced, a convex shape that reflects the protrusion of reinforcing fibers occurs on the surface of the thermoplastic resin coating layer after curing the FRP portion. There was a problem in appearance.
そこで、本発明者らは、比較的薄い熱可塑性樹脂被覆層
であっても、硬化後において補強繊維の浮出しを反映し
た熱可塑性樹脂被覆層への凹凸の少ない平滑な表面を有
する繊維強化複合成形体の製造方法について鋭意検討し
て本発明を完成した。
Therefore, the present inventors have found that even with a relatively thin thermoplastic resin coating layer, fiber reinforced having a smooth surface with little unevenness on the thermoplastic resin coating layer that reflects the protrusion of reinforcing fibers after curing. The present invention has been completed through intensive studies on a method for producing a composite molded body.
《課題を解決するための手段》 上記目的を達成するために、本発明の繊維強化複合成形
体の製造方法は、補強繊維に熱硬化性樹脂を含浸して所
定の形状に賦形した未硬化状物の外周を溶融状の熱可塑
性樹脂で継目なく被覆して冷却固化することにより熱可
塑性樹脂被覆層を形成した後、内部の前記未硬化状熱硬
化性樹脂を硬化して熱可塑性樹脂被覆繊維強化複合成形
体を製造する方法において、前記熱可塑性樹脂被覆層の
形成は、ダイから押出された溶融樹脂が引落し状態で未
硬化状物の外周に接触させる際又はさせた後、該熱可塑
性樹脂外周に表面状態矯正具を当接させつつ冷却して行
なうことを特徴としている。
<< Means for Solving the Problem >> In order to achieve the above object, the method for producing a fiber-reinforced composite molded article of the present invention is an uncured shape obtained by impregnating a reinforcing fiber with a thermosetting resin and shaping it into a predetermined shape. After forming a thermoplastic resin coating layer by seamlessly coating the outer periphery of the object with a molten thermoplastic resin and cooling and solidifying, the uncured thermosetting resin inside is cured to cover the thermoplastic resin. In the method for producing a fiber-reinforced composite molded body, the formation of the thermoplastic resin coating layer, when the molten resin extruded from the die is brought into contact with the outer periphery of the uncured material in a drawn state, or after the heat treatment It is characterized in that the surface condition correction tool is brought into contact with the outer periphery of the plastic resin and cooled.
本発明の方法に使用できる補強繊維は、ガラス繊維,炭
素繊維,セラミック繊維,アルミナ繊維などの無機繊
維、あるいは芳香族ポリアミド繊維,ナイロン繊維,ポ
リエステル繊維,ビニロン繊維などの長尺状のものであ
って、マトリックス樹脂としての熱硬化性樹脂と接着性
があって補強効果を発現できるものが好ましい。
The reinforcing fibers that can be used in the method of the present invention are inorganic fibers such as glass fibers, carbon fibers, ceramic fibers, and alumina fibers, or long fibers such as aromatic polyamide fibers, nylon fibers, polyester fibers, and vinylon fibers. It is preferable that the resin has adhesiveness with the thermosetting resin as the matrix resin and can exert a reinforcing effect.
また、熱硬化性樹脂は不飽和ポリエステル樹脂,ビニル
エステル樹脂,エポキシ樹脂,フェノール樹脂などが使
用できる。
Further, as the thermosetting resin, unsaturated polyester resin, vinyl ester resin, epoxy resin, phenol resin or the like can be used.
一方、外層を形成する熱可塑性樹脂は、溶融押出しが可
能な樹脂であれば特にその種類を問わないが硬化後のFR
P層と接着することを望むときは、上記熱硬化性樹脂と
親和性を有するもの、例えばスチレンを熱硬化性樹脂の
架橋性モノマーとして使用するときはスチレンを誘導体
としている熱可塑性樹脂であるABS樹脂,AAS樹脂,PS樹脂
(ポリスチレン樹脂)、あるいはPC樹脂(ポリカーボネ
ート樹脂)等が挙げられる。
On the other hand, the thermoplastic resin forming the outer layer is not particularly limited as long as it is a resin that can be melt extruded, but FR after curing
When it is desired to adhere to the P layer, those having an affinity with the thermosetting resin, for example, ABS which is a thermoplastic resin having styrene as a derivative when styrene is used as a crosslinking monomer of the thermosetting resin. Resin, AAS resin, PS resin (polystyrene resin), PC resin (polycarbonate resin), etc. may be mentioned.
本発明の製造方法において、引落し状態での被覆とは、
熱可塑性樹脂の最終被覆断面積よりも大きな開口部を有
する被覆ダイスより、溶融状の樹脂を被覆後の引取速度
よりも遅い速度で押出し、ダイの開口部と未硬化状物の
外周に接触する点、すなわち被覆終了点との間に円錐台
状ないし角錐台状の樹脂の流れが形成される状態での被
覆を意味する。
In the manufacturing method of the present invention, the coating in the withdrawn state,
The molten resin is extruded at a speed slower than the take-up speed after coating from a coating die having an opening larger than the final coating cross-sectional area of the thermoplastic resin, and contacts the opening of the die and the outer periphery of the uncured material. It means the coating in the state where a flow of resin having a truncated cone shape or a truncated pyramid shape is formed between the point, that is, the coating end point.
上記の引落し状態での被覆に際して、未硬化状物の外周
を溶融状から軟化状と降温しつつ被覆する過程におい
て、熱可塑性樹脂が未だ変形可能である状態において、
最終製品形状に対応した内形状の表面状態矯正具を当接
させながら冷却することによって、複合成形体の外形規
制を行ない、しかる後全体を冷却する。
In coating in the above-mentioned withdrawn state, in the process of coating while cooling the outer periphery of the uncured material from the molten state to the softened state, in the state that the thermoplastic resin is still deformable,
By cooling while abutting a surface condition corrector having an inner shape corresponding to the shape of the final product, the outer shape of the composite molded body is regulated, and then the entire body is cooled.
表面状態矯正具を接触させる位置,長さあるいは表面温
度および全周を同時に接触させる場合の内径寸法等は、
被覆の条件,速度などを勘案して適宜調整する。
For the position, length or surface temperature of the surface condition correction tool and the inner diameter when contacting the entire circumference at the same time,
Make appropriate adjustments in consideration of coating conditions and speed.
《作用》 本発明の方法では、補強繊維に未硬化状の熱硬化性樹脂
を含浸した未硬化状物の外周を熱可塑性樹脂が溶融状か
ら固体状に変化する過程で被覆するに際し、被覆層が未
だ軟化状態にある間に、最終製品形状に対応した内形状
の表面状態矯正具を当接させつつ冷却するので、被覆層
の表面が平滑化するとともに、内部の未硬化状物も被覆
層を介して表面状態矯正具の形状に賦形しながら、外周
の熱可塑性樹脂被覆層を冷却固化するので、あたかも所
定形状に予め賦形された熱可塑性樹脂の型枠中に未硬化
状物を充填した状態となって、製品全体の表面平滑性が
確保される。また、表面の熱可塑性樹脂被覆層は未硬化
状物外周と密着しているので、後の硬化工程で両者を接
着あるいは密着することができ、表面被覆による効果、
例えば耐候性,耐水,耐蝕性、取扱い性,耐衝撃性など
とFRPの軽量性,高強度性,高剛性等の性質を併せもつ
繊維強化複合成形体を製造できる。
<< Action >> In the method of the present invention, when the thermoplastic resin is coated on the outer periphery of the uncured material obtained by impregnating the reinforcing fiber with the uncured thermosetting resin, the coating layer is formed in the process of changing the thermoplastic resin from the molten state to the solid state. While it is still in a softened state, the surface condition corrector of the inner shape corresponding to the final product shape is cooled while contacting it, so that the surface of the coating layer is smoothed and the uncured substance inside is also a coating layer. While shaping into the shape of the surface condition correction tool via, the thermoplastic resin coating layer on the outer periphery is cooled and solidified, so that an uncured material is formed in the mold of the thermoplastic resin preformed into a predetermined shape. In the filled state, the surface smoothness of the entire product is secured. Further, since the thermoplastic resin coating layer on the surface is in close contact with the outer periphery of the uncured material, both can be adhered or adhered in the subsequent curing step, and the effect of the surface coating,
For example, it is possible to manufacture a fiber-reinforced composite molded article having weather resistance, water resistance, corrosion resistance, handleability, impact resistance, and the like, and the properties of FRP such as light weight, high strength, and high rigidity.
《実施例》 以下本発明につき好適な実施例により説明する。<< Examples >> The present invention will be described below with reference to preferred examples.
実施例1. 押出機1よりABS樹脂を押出して内寸40mm,外寸43mmの矩
形状の角形パイプ2を連続的に製造し、この外周に単糸
径が23.5μmで目付が4.4g/mのガラス繊維ロービング3
を所要本数不飽和ポリエステル樹脂浴4に導いて熱硬化
性樹脂を含浸し、絞りノズル5で絞り成形して外寸49mm
の矩形状の未硬化状物6を得、これを被覆用押出機7に
通して溶融状のABS樹脂で被覆した。このABS樹脂による
被覆について詳細に説明すると、被覆用のダイのヘッド
部20は第2図に示すように、まず未硬化状物6はニップ
ル21の中央通路中に導かれるが、該ニップル21はジャケ
ット状になっていて、冷却水22が循環できる状態となっ
ており、ニップル21の先端等に付着した熱硬化性樹脂が
部分的に硬化するなどしてトラブルが発生するのを防い
でいる。一方、ABS樹脂(MFR=0.8)を220℃で外径86mm
の円環状ダイ23から溶融押出しし、被覆終了後の被覆断
面積と円環状ダイの開口部の断面積の比、すなわち引落
し比を2.5とし、円錐状樹脂の流部24が、未硬化状物の
外周に接触して略角形状となった直後の冷却水槽の入口
に設置され、内方が50mm角,長さ80mmで上下に分割でき
るように構成された表面状態矯正具8を当接させて、角
形四辺の外形規制を行ないつつ冷却水槽9に導いて被覆
層全周を冷却した。なお、上記被覆の形成時にはダイヘ
ッド部のパイプ27を減圧ラインに接続することによっ
て、被覆形成層の内部を減圧として、発生ガスの排出と
被覆点の均一化を図った。なお、本実施例においては、
被覆厚み0.5mmとした。被覆層を冷却固化した後、これ
を熱油槽10に導いて硬化し、FRP層のガラス繊維体積含
有率が54%、内部の角形パイプ,FRP層,外部のABS被覆
とが一体化した角パイプ状の繊維強化複合成形体を得
た。
Example 1. ABS resin is extruded from an extruder 1 to continuously produce a rectangular rectangular pipe 2 having an inner dimension of 40 mm and an outer dimension of 43 mm, and a single yarn diameter of 23.5 μm and a basis weight of 4.4 g / m on the outer periphery. Glass fiber roving 3
To the required number of unsaturated polyester resin baths 4 and impregnated with thermosetting resin, and draw-formed with a draw nozzle 5 to obtain an outer dimension of 49 mm.
The rectangular uncured product 6 was obtained and was passed through the coating extruder 7 to be coated with the molten ABS resin. The coating with the ABS resin will be described in detail. As shown in FIG. 2, the coating die head portion 20 first introduces the uncured material 6 into the central passage of the nipple 21. It has a jacket shape and is in a state in which the cooling water 22 can be circulated, thereby preventing troubles such as the thermosetting resin attached to the tip of the nipple 21 being partially cured. On the other hand, ABS resin (MFR = 0.8) at 220 ℃ has an outer diameter of 86 mm.
Melt extruded from the annular die 23, the ratio of the coating cross-sectional area after the coating and the cross-sectional area of the opening of the annular die, that is, the draw-down ratio is 2.5, the conical resin flow portion 24 is uncured Immediately after contacting the outer periphery of the object, it is installed at the entrance of the cooling water tank, and the inside is 50mm square and the length is 80mm. Then, the outer periphery of the four sides of the prism was regulated, and the entire circumference of the coating layer was cooled by introducing it into the cooling water tank 9. At the time of forming the coating, the pipe 27 of the die head portion was connected to a decompression line to reduce the pressure inside the coating forming layer, thereby discharging the generated gas and making the coating points uniform. In this example,
The coating thickness was 0.5 mm. After the coating layer is cooled and solidified, it is introduced into the hot oil tank 10 and cured, and the glass fiber volume content of the FRP layer is 54%, and the square pipe inside, the FRP layer and the outside ABS coating are integrated. A fiber-reinforced composite molded product was obtained.
この複合成形体の被覆表面は、後述する比較例1による
複合成形体と比較して筋状の凹凸は著しく少なく、マイ
クロメータによる測定では150μmの表面粗さであっ
た。
The coated surface of this composite molded body had significantly less streaky irregularities as compared with the composite molded body according to Comparative Example 1 described later, and had a surface roughness of 150 μm as measured by a micrometer.
比較例1. 実施例1において、熱可塑性樹脂被覆時にその外周に表
面状態矯正具を当接させないほかは、実施例1と同様に
して角パイプ状の繊維強化複合成形体を得た。
Comparative Example 1. A square pipe-shaped fiber-reinforced composite molded article was obtained in the same manner as in Example 1, except that the surface conditioner was not brought into contact with the outer periphery of the thermoplastic resin during coating with the thermoplastic resin.
得られた複合成形体は被覆表面に高さ約0.3〜0.4mm,幅
約3〜5mmの筋状凸部が1辺50mm中に7〜8本浮き出し
た状態であった。
The obtained composite molded article had a state in which 7 to 8 streak-like projections having a height of about 0.3 to 0.4 mm and a width of about 3 to 5 mm were projected on a side of 50 mm on the coated surface.
実施例2. 実施例1と同一の角形パイプ2及び未硬化状物6を得
て、これをABS樹脂で被覆するにあたり、実施例1で使
用したニップルに変えて、第4図にその要部のみを拡大
して示すようにニップル21の先端に被覆層の内周を冷却
する角錐台状のフォーマー26を延設し、被覆層24の内周
25を該冷却フォーマーによって冷却させつつ未硬化状物
6に接触させ、かつこの接触と同時に実施例1と同様に
表面状態矯正具8を当接させて、内周および外周の両面
を冷却矯正して被覆し、冷却槽中で被覆層を冷却固化し
た。
Example 2 In obtaining the same rectangular pipe 2 and uncured material 6 as in Example 1, and coating the same with ABS resin, the nipple used in Example 1 was changed, and the main part thereof is shown in FIG. As shown in a magnified view, a truncated pyramid-shaped former 26 for cooling the inner circumference of the coating layer is provided at the tip of the nipple 21, and the inner circumference of the coating layer 24 is extended.
25 is cooled by the cooling former and brought into contact with the uncured material 6, and at the same time as this contact, the surface condition correction tool 8 is brought into contact with the uncured material 6 to cool and correct both inner and outer circumferences. The coating layer was cooled and solidified in a cooling bath.
しかる後、実施例1と同様に内部の未硬化状態熱硬化性
樹脂を硬化し、実施例1と同一寸法、同一ガラス繊維含
有率であって、ABS層とFRP層とが一体化した角パイプ状
の繊維強化複合成形体を得た。
Thereafter, the internal uncured thermosetting resin was cured in the same manner as in Example 1 to have the same dimensions and the same glass fiber content as Example 1, and a square pipe in which the ABS layer and the FRP layer were integrated. A fiber-reinforced composite molded product was obtained.
この複合成形体の被覆表面は、マイクロメータによる測
定では80μmの表面粗さであった 《効果》 本発明の方法によれば、繊維強化複合体は熱可塑性樹脂
被覆層の表面に補強繊維の飛び出し、乱れなどを原因と
する筋状の凹凸の発生が少ないので、表面が美麗となっ
て商品価値が向上する。また、従来においては表面凹凸
を少くするには、被覆厚みを暑くせざるを得ず、この場
合は寸法の増大、あるいは寸法の上限が規制される場合
はFRP層の薄肉化を余儀なくされるが、本発明によれ
ば、高い生産性を維持しつつ、比較的薄い肉厚の熱可塑
性樹脂との複合による利点を活かした繊維強化複合成形
体の製法を提供できる。
The coated surface of this composite molded body had a surface roughness of 80 μm as measured by a micrometer. <Effect> According to the method of the present invention, the fiber-reinforced composite body has the reinforcing fibers protruding to the surface of the thermoplastic resin coating layer. Since there are few streaky irregularities caused by turbulence, etc., the surface is beautiful and the product value is improved. Further, in the past, in order to reduce the surface irregularities, the coating thickness had to be hot, and in this case, if the dimension was increased or the upper limit of the dimension was regulated, the FRP layer would be made thinner. According to the present invention, it is possible to provide a method for producing a fiber-reinforced composite molded body that maintains the high productivity and takes advantage of the advantage of the combination with a relatively thin-walled thermoplastic resin.
【図面の簡単な説明】[Brief description of drawings]
第1図は本発明の繊維強化複合成形体の製造工程の全体
説明図、第2図は熱可塑性樹脂被覆用押出機のダイ部断
面図、第3図は第2図の要部拡大図、第4図は第2実施
例の要部拡大図である。 3……ガラス繊維ロービング(補強繊維) 6……未硬化状物、8……表面状態矯正具 9……冷却水槽
FIG. 1 is an overall explanatory view of the manufacturing process of the fiber-reinforced composite molded article of the present invention, FIG. 2 is a sectional view of a die part of an extruder for coating a thermoplastic resin, and FIG. 3 is an enlarged view of a main part of FIG. FIG. 4 is an enlarged view of the essential parts of the second embodiment. 3 ... Glass fiber roving (reinforcing fiber) 6 ... Unhardened material, 8 ... Surface condition correction tool 9 ... Cooling water tank

Claims (1)

    【特許請求の範囲】[Claims]
  1. 【請求項1】補強繊維に熱硬化性樹脂を含浸して所定の
    形状に賦形した未硬化状物の外周を溶融状の熱可塑性樹
    脂で継目なく被覆して冷却固化することにより熱可塑性
    樹脂被覆層を形成した後、内部の前記未硬化状熱硬化性
    樹脂を硬化して熱可塑性樹脂被覆繊維強化複合成形体を
    製造する方法において、 前記熱可塑性樹脂被覆層の形成は、ダイから押出された
    溶融樹脂が引落し状態で未硬化状物の外周に接触させる
    際又はさせた後、該熱可塑性樹脂外周に表面状態矯正具
    を当接させつつ冷却して行うことを特徴とする繊維強化
    複合成形体の製造方法。
    1. A thermoplastic resin obtained by impregnating reinforcing fibers with a thermosetting resin and shaping the uncured product into a predetermined shape by seamlessly covering it with a molten thermoplastic resin and cooling and solidifying it. After forming the coating layer, in the method for producing a thermoplastic resin-coated fiber-reinforced composite molded article by curing the uncured thermosetting resin inside, the formation of the thermoplastic resin coating layer is extruded from a die. When the molten resin is brought into contact with the outer periphery of the uncured material in a drawn state, or after the molten resin is brought into contact with the outer periphery of the thermoplastic resin, cooling is performed while bringing a surface condition corrector into contact with the outer periphery of the thermoplastic resin. Method for manufacturing molded body.
JP1160627A 1989-06-26 1989-06-26 Method for producing fiber-reinforced composite molded body Expired - Fee Related JPH0688311B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1160627A JPH0688311B2 (en) 1989-06-26 1989-06-26 Method for producing fiber-reinforced composite molded body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1160627A JPH0688311B2 (en) 1989-06-26 1989-06-26 Method for producing fiber-reinforced composite molded body

Publications (2)

Publication Number Publication Date
JPH0326521A JPH0326521A (en) 1991-02-05
JPH0688311B2 true JPH0688311B2 (en) 1994-11-09

Family

ID=15719022

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1160627A Expired - Fee Related JPH0688311B2 (en) 1989-06-26 1989-06-26 Method for producing fiber-reinforced composite molded body

Country Status (1)

Country Link
JP (1) JPH0688311B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002156929A (en) * 2000-11-17 2002-05-31 Ube Nitto Kasei Co Ltd Bar-shaped body made of fiber reinforced synthetic resin and producing method thereof
JP4503378B2 (en) 2004-07-15 2010-07-14 株式会社Ihi Method and apparatus for removing gaseous mercury in exhaust gas
DE102006049660B3 (en) * 2006-10-18 2008-02-14 Inoex Gmbh Assembly to extrude thermoplastic pipes has form chamber with adjustable radial inserts
JP5437603B2 (en) * 2008-07-30 2014-03-12 宇部エクシモ株式会社 Manufacturing method of fiber reinforced composite resin linear material

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5735274B2 (en) * 1979-07-25 1982-07-28
JPH0139329B2 (en) * 1980-12-26 1989-08-21 Toppan Printing Co Ltd

Also Published As

Publication number Publication date
JPH0326521A (en) 1991-02-05

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