JPH05124036A - Production of fiber-reinforced resin body - Google Patents

Production of fiber-reinforced resin body

Info

Publication number
JPH05124036A
JPH05124036A JP3067811A JP6781191A JPH05124036A JP H05124036 A JPH05124036 A JP H05124036A JP 3067811 A JP3067811 A JP 3067811A JP 6781191 A JP6781191 A JP 6781191A JP H05124036 A JPH05124036 A JP H05124036A
Authority
JP
Japan
Prior art keywords
resin
glass fiber
thermoplastic resin
melt viscosity
fiber bundle
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.)
Pending
Application number
JP3067811A
Other languages
Japanese (ja)
Inventor
Shigeharu Arai
新井重治
Atsuto Kobayashi
小林淳人
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asahi Fiber Glass Co Ltd
Original Assignee
Asahi Fiber Glass Co Ltd
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 Asahi Fiber Glass Co Ltd filed Critical Asahi Fiber Glass Co Ltd
Priority to JP3067811A priority Critical patent/JPH05124036A/en
Publication of JPH05124036A publication Critical patent/JPH05124036A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/12—Making granules characterised by structure or composition
    • B29B9/14—Making granules characterised by structure or composition fibre-reinforced
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2309/00—Use of inorganic materials not provided for in groups B29K2303/00 - B29K2307/00, as reinforcement
    • B29K2309/08—Glass

Abstract

PURPOSE:To obtain the homogeneous FRTP moldings having high strength by supplying both the cut material of a glass fiber bundle covered with thermoplastic resin and thermoplastic resin having melt viscosity higher than the said resin into a molding machine and imparting a required shape in pressurization and heating. CONSTITUTION:A long-sized glass fiber bundle is continuously passed in the melt of thermoplastic resin low in melt viscosity to coat the surface with this thermoplastic resin. Both the cut material of this glass fiber bundle and thermoplastic resin having melt viscosity higher than the said resin are supplied to a molding machine. A required shape is imparted in pressurization and heating. Thereupon thermo-plastic resin having high melt viscosity is comparatively low in conformableness with glass fiber and hardly penetrated into the inside of the glass fiber bundle but is good in conformableness with thermoplastic resin having low melt viscosity. Therefore coating to the glass fiber bundle previously treated by thermoplastic resin having low melt viscosity is made good. Thermoplastic resin having high melt viscosity is homogeneously and easily mixed.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明はガラス繊維で補強された
熱可塑性樹脂体（ＦＲＴＰ成形品）の製造法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a thermoplastic resin body (FRTP molded article) reinforced with glass fiber.

【０００２】[0002]

【従来の技術】ガラス繊維束切断物（ＣＳ）と熱可塑性
樹脂ペレットとを押出機中で加熱しつつ混練することに
なりペレットを製造し、（以下ＣＳ法という。）このペ
レットを原料として射出成形法によりＦＲＴＰ成形品を
製造することは広く行われている。又、長尺のガラス繊
維束を熱可塑性樹脂溶融物中を通過させて、ガラス繊維
束の表面に該樹脂を被着させた後切断してＦＲＴＰ成形
用ペレットとなし、（以下長尺法いう。）、このペレッ
トを原料として射出成形法によりＦＲＴＰ成形品を製造
することも広く行われている。（例えば特公昭５７−１
７６８６号公報、特公昭６１−４０１１３号公報参照）2. Description of the Related Art A cut glass fiber bundle (CS) and a thermoplastic resin pellet are kneaded while being heated in an extruder to produce a pellet, which is hereinafter referred to as a CS method. It is widely practiced to manufacture FRTP molded products by a molding method. In addition, a long glass fiber bundle is passed through a thermoplastic resin melt to deposit the resin on the surface of the glass fiber bundle and then cut to form a FRTP molding pellet. It is also widely practiced to manufacture FRTP molded products by injection molding using these pellets as raw materials. (For example, Japanese Patent Publication 57-1
(See Japanese Patent No. 7686, Japanese Patent Publication No. 61-40113)

【０００３】[0003]

【発明が解決しようとする課題】従来技術は、次のよう
な問題点を有する。ＣＳ法においては、ＣＳと樹脂ペレ
ットとを押出機中で混練する際、ＣＳを構成するガラス
繊維が寸断させるため、高強度のＦＲＴＰ成形品を得る
ことはできない。長尺法においては、ガラス繊維束に熱
可塑性樹脂を均一に含浸させるためには、樹脂粘度が低
い状態で含浸を行う必要があり、樹脂粘度が高い状態で
は、樹脂ガラス繊維束の内部に浸み込み難く、ガラス繊
維束内に、樹脂の含浸が不充分な個処、或は、樹脂の含
浸が全く行われない個処が発生し、均質なＦＲＴＰ成形
品を得ることができない。The prior art has the following problems. In the CS method, when the CS and the resin pellets are kneaded in the extruder, the glass fibers constituting the CS are cut into pieces, so that a high-strength FRTP molded product cannot be obtained. In the long length method, in order to uniformly impregnate the glass fiber bundle with the thermoplastic resin, it is necessary to perform impregnation in a state where the resin viscosity is low. It is difficult to penetrate the glass fiber bundle, and a portion where the resin is not sufficiently impregnated or a portion where the resin is not completely impregnated occurs in the glass fiber bundle, and a homogeneous FRTP molded product cannot be obtained.

【０００４】ＦＲＴＰ成形品の強度は、熱可塑性樹脂の
組成が一定の場合、一般に熱可塑性樹脂の分子量（重合
度）の大きい程大となる傾向を有するが、分子量を大と
すると粘度も大となってしまい、分子量の大きい熱可塑
性樹脂を使用すると含浸を均一に行なうことが困難とな
り、含浸を均一に行なうためには低分子量の樹脂を使用
することが必要となる。このため所望の高強度の、特に
衝撃強度の高いＦＲＴＰ成形品が得難くなる。熱可塑性
樹脂を高温に加熱することにより、粘度を低下させるこ
とはできるが、加熱温度を大とすると樹脂の分解、劣化
が生ずるばかりでなく、熱損失も大となり、又装置の耐
用年数も低下する。The strength of a FRTP molded article generally tends to increase as the molecular weight (polymerization degree) of the thermoplastic resin increases, when the composition of the thermoplastic resin is constant, but the viscosity increases as the molecular weight increases. Therefore, if a thermoplastic resin having a large molecular weight is used, it becomes difficult to carry out the impregnation uniformly, and it is necessary to use a resin having a low molecular weight in order to carry out the impregnation uniformly. For this reason, it becomes difficult to obtain a desired FRTP molded product having high strength, particularly high impact strength. Viscosity can be reduced by heating the thermoplastic resin to a high temperature, but if the heating temperature is increased, not only the resin will decompose and deteriorate, but also the heat loss will increase and the service life of the device will also decrease. To do.

【０００５】本発明は、上述した従来技術の問題点を解
消し、溶融粘度の高い熱可塑性樹脂溶融物を使用し、長
尺法により、高強度の均質なＦＲＴＰ成形品を製造する
方法を提供することを目的とする。The present invention solves the above-mentioned problems of the prior art, and provides a method for producing a high-strength, homogeneous FRTP molded product by the length method using a thermoplastic resin melt having a high melt viscosity. The purpose is to do.

【０００６】[0006]

【課題を解決するための手段】上記目的を達成するため
に、本発明においては、長尺のガラス繊維束を溶融粘度
の低い熱可塑性樹脂溶融物中を連続的に通過させてその
表面に上記熱可塑性樹脂を被着させたガラス繊維束の切
断物と、上樹脂より溶融粘度の高い熱可塑性樹脂とを成
形機に供給して加圧、加熱下に所望の形状を附与するこ
とによりＦＲＴＰ成形品を製造する。In order to achieve the above object, in the present invention, a long glass fiber bundle is continuously passed through a thermoplastic resin melt having a low melt viscosity to form the above-mentioned surface on the surface thereof. FRTP is obtained by feeding a cut product of a glass fiber bundle coated with a thermoplastic resin and a thermoplastic resin having a higher melt viscosity than the upper resin to a molding machine and imparting a desired shape under pressure and heating. Manufacture molded products.

【０００７】次に、本発明を更に具体的に説明する。本
発明において使用される熱可塑性樹脂としては、ポリエ
チレン樹脂、ポリプロピレン樹脂、ポリアミド樹脂、熱
可塑性ポリエステル樹脂（例えばＰＥＴ、ＰＢＴ）、Ｐ
ＰＳ樹脂、ポエステル樹脂、ＡＳ樹脂、ポリカーボネー
ト樹脂が例示される。溶融粘度の低い樹脂としては、そ
の溶融物粘度が同じ温度における溶融粘度の高い樹脂
（ＦＲＴＰ成形品を構成する主体となる樹脂）の粘度の
１／２以下、好ましくは１／４以下のものを使用するの
が適当である。Next, the present invention will be described more specifically. Examples of the thermoplastic resin used in the present invention include polyethylene resin, polypropylene resin, polyamide resin, thermoplastic polyester resin (eg PET, PBT), P
Examples include PS resin, polyester resin, AS resin, and polycarbonate resin. As the resin having a low melt viscosity, one having a melt viscosity of 1/2 or less, preferably 1/4 or less, of the resin having a high melt viscosity at the same temperature (resin which is a main constituent of the FRTP molded product) is used. It is suitable to use.

【０００８】又、所望の溶融粘度の高い熱可塑性樹脂
（樹脂Ｈ）の被着を良好ならしめるための溶融粘度の低
い樹脂（樹脂Ｌ）としては、樹脂Ｈに対する混合性、相
溶性が良好であり、且つ樹脂Ｈの特性を低下させること
がないもの、或は樹脂Ｈとポリマーアロイを形成し、樹
脂Ｈの特性を向上させるものが適当である。適当であ
る。Further, as a resin (resin L) having a low melt viscosity for adhering a desired thermoplastic resin (resin H) having a high melt viscosity to the resin (resin L), the mixing property and the compatibility with the resin H are good. It is suitable that the resin does not deteriorate the characteristics of the resin H, or that it forms a polymer alloy with the resin H and improves the characteristics of the resin H. Appropriate.

【０００９】本願発明によるときは、ガラス繊維束は予
め溶融粘度の低い熱可塑性樹脂溶融物で処理され、ガラ
ス繊維表面にはガラス繊維と馴染みの良好な溶融粘度の
低い樹脂層が形成される。溶融粘度の高い熱可塑性樹脂
はガラス繊維との馴染みが比較的低く、ガラス繊維束内
部へ浸み込み難いが、溶融粘度の低い熱可塑性樹脂との
馴染みが良好であり、溶融粘度の低い熱可塑性樹脂で予
め処理されたガラス繊維束への被着も良好で、均質に混
合し易くなる。According to the present invention, the glass fiber bundle is preliminarily treated with a thermoplastic resin melt having a low melt viscosity, and a resin layer having a low melt viscosity which is well compatible with the glass fiber is formed on the surface of the glass fiber. Thermoplastic resins with high melt viscosity have relatively low compatibility with glass fibers and are difficult to penetrate into glass fiber bundles, but they have good compatibility with thermoplastic resins with low melt viscosity, and thermoplastic resins with low melt viscosity. Adhesion to glass fiber bundles pre-treated with resin is also good and facilitates homogeneous mixing.

【００１０】長尺のガラス繊維束としては、直径３〜２
３μ、望ましくは６〜１６μ程度のガラス繊維に集束剤
を附与し、２，０００〜６，０００本程度、望ましくは
１，６００〜４，０００本程度集束した、１，０００ｍ
当りの重量（ｇｒ）（番手）が２００〜４，５００、望
ましくは５００〜２，５００程度のものが好適に使用で
きる。The long glass fiber bundle has a diameter of 3 to 2
A glass fiber of 3 μm, preferably about 6 to 16 μm, is provided with a sizing agent, and about 2,000 to 6,000, preferably about 1,600 to 4,000, is bundled, 1,000 m.
Those having a weight per unit (gr) (count) of 200 to 4,500, preferably about 500 to 2,500 can be suitably used.

【００１１】このようなガラス繊維束しとては、番手の
小さい繊維束（ストランド）を所定本数引揃えたロービ
ング、或は所定本数のガラス繊維を一工程で集束するこ
とによって得られるロ−ビングを好適に使用することが
できる。集束剤としては、エポキシ系、ウレタン系のも
のを用い、又集束剤の附与量はガラス繊維に対し、固形
分として０．２〜２．０ｗｔ％、望ましくは０．４〜
１．０ｗｔ％とするのが適当である。なお、予めバルキ
ー処理をしたガラス繊維束を用いることもできる。As such a glass fiber bundle, a roving obtained by aligning a predetermined number of small number fiber bundles (strands) or a roving obtained by bundling a predetermined number of glass fibers in one step. Can be preferably used. As the sizing agent, an epoxy-based or urethane-based sizing agent is used, and the amount of the sizing agent added is 0.2 to 2.0 wt% as solid content, preferably 0.4 to
It is suitable to be 1.0 wt%. It is also possible to use a glass fiber bundle which has been bulky processed in advance.

【００１２】溶融粘度の低い熱可塑性樹脂ペレットを押
出機に供給して溶融し、この溶融物をクロスヘッドダイ
中に供給し、円筒状にロービングを回巻した回巻体から
ロービングを引出し、クロスヘッドダイに設けた入口か
らクロスヘッドダイ中に供給して、クロスヘッドダイに
入口と対向して設けた出口から引出し、例えば一対の逆
方向に回転するローラを有する引張り装置で引張ること
により、長尺のガラス繊維束表面に上記樹脂を被着させ
ることができ、樹脂はロービング内部迄充分含浸する。
なお、押出機及びクロスヘッドダイはＦＲＴＰの製造に
用いられる常用のものを使用できるので詳細な説明は省
略する。又特公昭５７−１７６８６号公報、特公昭６１
−４０１１３号公報記載の方法を使用することもでき
る。[0012] Thermoplastic resin pellets having a low melt viscosity are fed to an extruder to be melted, the melt is fed into a crosshead die, and the roving is drawn out from a wound body in which the roving is wound in a cylindrical shape, and is crossed. By supplying from the inlet provided in the head die into the crosshead die and drawing out from the outlet provided opposite to the inlet in the crosshead die, for example, by pulling with a pulling device having a pair of rollers rotating in opposite directions, The above resin can be adhered to the surface of the glass fiber bundle of the length, and the resin is sufficiently impregnated to the inside of the roving.
Since the extruder and the crosshead die may be conventional ones used in the manufacture of FRTP, detailed description thereof will be omitted. Also, Japanese Patent Publication No. 57-17686, Japanese Patent Publication No. 61
It is also possible to use the method described in JP-40113.

【００１３】なお又、ロービングは、上記樹脂溶融物の
温度とほぼ等しい温度迄予熱しておくのが望ましい。予
熱方法に特に限定はなく、赤外線加熱、温風加熱等を用
いることができる。又、クロスヘッドダイの出口から引
出されたロービングに冷風又は水を吹きつける等の方法
で、冷却し、ロービング表面に附着した樹脂を固化せし
めた状態で引張り装置に供給するのが望ましい。ロービ
ング（ガラス繊維束）に対する樹脂の被着量は、クロス
ヘッドダイ出口の大きさを増減することにより、所望値
に制御することができるが、この大きさをガラス含有率
が３０〜８０ｗｔ％、望ましくは４０〜７０ｗｔ％とな
るよう定めるのが適当である。樹脂の被着量があまり大
きいと、樹脂の含有量が過大となる部分が生じて樹脂と
ガラス繊維の割合が不均一となり易く、又、この被着量
があまり小さいと樹脂の含浸しない部分が発生し易い。Furthermore, it is desirable that the roving be preheated to a temperature substantially equal to the temperature of the resin melt. The preheating method is not particularly limited, and infrared heating, warm air heating, or the like can be used. Further, it is desirable that the roving drawn out from the outlet of the crosshead die is cooled by a method such as blowing cold air or water, and the resin attached to the surface of the roving is solidified and supplied to the pulling device. The amount of resin adhered to the rovings (glass fiber bundle) can be controlled to a desired value by increasing or decreasing the size of the crosshead die outlet, and this size is controlled to have a glass content of 30 to 80 wt%, It is desirable to set it to be 40 to 70 wt%. If the resin deposition amount is too large, the resin content may become excessively large, and the ratio of the resin and the glass fiber tends to be uneven, and if the resin deposition amount is too small, the resin may not be impregnated. It is easy to occur.

【００１４】樹脂を被着させたガラス繊維束を３〜３０
ｍｍ望ましくは６〜１２ｍｍ程度に切断して切断物とな
し、この切断物と溶融粘度の高い樹脂ペレツトとを成形
機に供給し、常法に従い加圧、加熱にＦＲＴＰ成形品を
製造する。例えば、上記切断物と溶融粘度の高い樹脂の
ペレットとを混合し、射出成形機に供給し、射出成形に
より所望の形状のＦＲＴＰ成形品を製造することができ
る。切断物とペレットの混合比は、ＦＲＴＰの組成に応
じて定められるが、通常重量比、１００：５〜２，００
０望ましくは１００：１０〜１，０００程度である。Ｆ
ＲＴＰ成形中にガラス繊維と溶融粘度の低い樹脂、溶融
粘度の高い樹脂は、均一に混合し、且つガラス繊維が寸
断させることがなく、高強度の均質なＦＲＴＰ成形品を
うることができる。3 to 30 glass fiber bundles coated with resin
mm, preferably 6 to 12 mm is cut into a cut product, and the cut product and a resin pellet having a high melt viscosity are supplied to a molding machine, and a FRTP molded product is manufactured by pressurizing and heating according to a conventional method. For example, a FRTP molded product having a desired shape can be manufactured by mixing the cut product with a resin pellet having a high melt viscosity, supplying the mixture to an injection molding machine, and performing injection molding. The mixing ratio of the cut product and the pellet is determined according to the composition of FRTP, but usually the weight ratio is 100: 5 to 2,000.
0 is preferably about 100: 10 to 1,000. F
A resin having a low melt viscosity and a resin having a high melt viscosity are uniformly mixed with the glass fiber during the RTP molding, and the glass fiber is not shredded, and a high-strength homogeneous FRTP molded product can be obtained.

【００１５】[0015]

【作用】長尺のガラス繊維束を溶融粘度の低い熱可塑性
樹脂溶融物中を連続的に通過させてその表面に上記熱可
塑性樹脂を被着、含浸させたガラス繊維束の切断物と、
上記樹脂より溶融粘度の高い熱可塑性樹脂とを成形機に
供給して加圧、加熱下に所望の形状を附与することによ
り、ガラス繊維の寸断、樹脂の劣化を招来することな
く、均質な、高強度のＦＲＴＰ成形品を得る。A cut piece of a glass fiber bundle obtained by continuously passing a long glass fiber bundle through a thermoplastic resin melt having a low melt viscosity to coat and impregnate the surface with the thermoplastic resin.
By supplying a thermoplastic resin having a higher melt viscosity than the above resin to a molding machine and imparting a desired shape under pressure and heating, the glass fiber is not shredded, the resin is not deteriorated, and the resin is homogeneous. , To obtain a high-strength FRTP molded product.

【００１６】[0016]

【実施例】ガラス繊維束として、直径１６μのガラス繊
維にエポキン系集束剤を固形分として０．７ｗｔ％被着
させ、４，０００本集束してなる１，０００ｍ当りの重
量２，２００ｇｒのロービングを用いた。ＭＦＲ５０ｇ
／１０分のポリプロピレン樹脂（ＰＰ）を２５０℃で押
出機で溶融し、クロスヘッドダイに供給し、上記ロービ
ングを２３０℃に予熱してクロスヘッドダイ中を通過さ
せ、このＰＰをロービングに被着含有させ、ガラス含有
率７０ｗｔ％の丸棒とした。このロービングを１２ｍｍ
の長さに切断し、この切断物とＭＦＲ３ｇｒ／１０分の
ＰＰペレットを１：２．５の割合で混合し、射出成形に
より製造したガラス含有率２０ｗｔ％のＦＲＴＰ成形品
の物性は次の通りであった。 アイゾットノッチ付衝撃強度 １８ Ｋｇ−ｃｍ／ｃｍ 曲げ強度 １０．５ Ｋｇ／ｍｍ2 曲げ弾性率 ４００ Ｋｇ／ｍｍ2 Example As a glass fiber bundle, a glass fiber having a diameter of 16 μ was coated with 0.7 wt% of an epochine-based sizing agent as a solid content, and 4,000 bundles were formed to roving a weight of 2,200 gr per 1,000 m. Was used. MFR 50g
/ 10 minutes polypropylene resin (PP) is melted at 250 ° C. by an extruder and supplied to a crosshead die, the roving is preheated to 230 ° C. and passed through the crosshead die, and the PP is adhered to the roving. A round bar having a glass content of 70 wt% was included. This roving is 12mm
The FRTP molded product with a glass content of 20 wt% produced by injection molding was prepared by cutting the cut product and mixing the cut product with PP pellets of MFR 3 gr / 10 min at a ratio of 1: 2.5. Met. Impact strength with Izod notch 18 Kg-cm / cm Bending strength 10.5 Kg / mm 2 Bending elastic modulus 400 Kg / mm 2

【００１７】[0017]

【比較例１】実施例のＭＦＲ３ｇｒ／１０分のＰＰの代
りに、ＭＦＲ５０ｇ／１０分のＰＰを用い、同様な試験
を行なった結果は次の通りであった。 アイゾットノッチ付衝撃強度 １３ Ｋｇ−ｃｍ／ｃｍ 曲げ強度 １０．５ Ｋｇ／ｍｍ2 曲げ弾性率 ４００ Ｋｇ／ｍｍ2 Comparative Example 1 Instead of the PP of MFR 3 gr / 10 min in the example, a PP of MFR 50 g / 10 min was used and the same test was conducted. The results are as follows. Impact strength with Izod notch 13 Kg-cm / cm Bending strength 10.5 Kg / mm 2 Bending elastic modulus 400 Kg / mm 2

【００１８】[0018]

【比較例２】実施例で使用したロービングを１２ｍｍの
長さに切断したと切断物とＭＦＲ３ｇｒ／１０分のＰＰ
ペレットを１：４の割合で押出機で十分溶融混練し、ガ
ラス含有率２０ｗｔ％のペレットとし、このペレットを
用い、射出成形で得られたＦＲＴＰ成形品について同様
な試験を行なった結果は次の通りであった。 アイゾットノッチ付衝撃強度 ７．５ Ｋｇ−ｃｍ／ｃｍ 曲げ強度 ９．７ Ｋｇ／ｍｍ2 曲げ弾性率 ３９０ Ｋｇ／ｍｍ2 [Comparative Example 2] The roving used in the example was cut to a length of 12 mm, and the cut product and MFR 3 gr / 10 min PP.
Pellets were sufficiently melt-kneaded in an extruder at a ratio of 1: 4 to obtain pellets having a glass content of 20 wt%. Using the pellets, the FRTP molded product obtained by injection molding was subjected to the same test. It was on the street. Impact strength with Izod notch 7.5 Kg-cm / cm Bending strength 9.7 Kg / mm 2 Flexural modulus 390 Kg / mm 2

【００１９】[0019]

【発明の効果】均質な、強度の大きいＦＲＴＰ成形品を
得ることができる。INDUSTRIAL APPLICABILITY It is possible to obtain a homogeneous, high-strength FRTP molded product.

フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ２９Ｃ 67/14 Ｗ 7188−4Ｆ // Ｂ２９Ｋ 105:06 Continuation of the front page (51) Int.Cl. 5 Identification number Office reference number FI technical display location B29C 67/14 W 7188-4F // B29K 105: 06

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】長尺のガラス繊維束を溶融粘度の低い熱可
塑性樹脂物溶融物中を連続的に通過させてその表面に上
記熱可塑性樹脂を被着させたガラス繊維束の切断物と、
上記樹脂より溶融粘度の高い熱可塑性樹脂とを成形機に
供給して加圧、加熱下に所望の形状を附与することを特
徴とする繊維補強樹脂体の製造法。1. A cut product of a glass fiber bundle, which is obtained by continuously passing a long glass fiber bundle through a thermoplastic resin melt having a low melt viscosity, and coating the surface with the thermoplastic resin.
A method for producing a fiber-reinforced resin body, which comprises supplying a thermoplastic resin having a higher melt viscosity than the above resin to a molding machine and imparting a desired shape under pressure and heating.
JP3067811A 1991-03-08 1991-03-08 Production of fiber-reinforced resin body Pending JPH05124036A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3067811A JPH05124036A (en) 1991-03-08 1991-03-08 Production of fiber-reinforced resin body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3067811A JPH05124036A (en) 1991-03-08 1991-03-08 Production of fiber-reinforced resin body

Publications (1)

Publication Number Publication Date
JPH05124036A true JPH05124036A (en) 1993-05-21

Family

ID=13355706

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3067811A Pending JPH05124036A (en) 1991-03-08 1991-03-08 Production of fiber-reinforced resin body

Country Status (1)

Country Link
JP (1) JPH05124036A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994029373A1 (en) * 1993-06-10 1994-12-22 Dsm N.V. Composition comprising a matrix polymer, fibrous reinforcing material and a binder and a method for injection moulding such a composition
WO1998016359A1 (en) * 1996-10-14 1998-04-23 Dsm N.V. Rod-shaped pellets
WO1998020076A1 (en) * 1996-11-06 1998-05-14 Toray Industries, Inc. Molding material and process for preparing the same
WO1998021281A1 (en) * 1996-11-14 1998-05-22 Kawasaki Steel Corporation Long glass fiber-reinforced conductive thermoplastic resin molding and process for preparing the same
NL1006363C2 (en) * 1997-06-20 1998-12-22 Dsm Nv Glass fibre reinforced thermoplastic polymer pellets
JP2003221454A (en) * 2002-01-30 2003-08-05 Mazda Motor Corp Long glass fiber reinforced resin material for molding, molding method of resin molding, and resin molding
JP5608818B2 (en) * 2012-06-11 2014-10-15 東レプラスチック精工株式会社 Carbon fiber composite material, molded product using the same, and production method thereof

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994029373A1 (en) * 1993-06-10 1994-12-22 Dsm N.V. Composition comprising a matrix polymer, fibrous reinforcing material and a binder and a method for injection moulding such a composition
BE1007210A3 (en) * 1993-06-10 1995-04-25 Dsm Nv Composition comprising a matrix polymer, fibrous reinforcement AND A BINDER, AND METHOD FOR MOULDING OF SUCH COMPOSITION.
WO1998016359A1 (en) * 1996-10-14 1998-04-23 Dsm N.V. Rod-shaped pellets
WO1998020076A1 (en) * 1996-11-06 1998-05-14 Toray Industries, Inc. Molding material and process for preparing the same
US6455143B1 (en) 1996-11-06 2002-09-24 Toray Industries Inc. Molding material and production process
US6828374B2 (en) 1996-11-06 2004-12-07 Toray Industries, Inc. Molding material and production process
WO1998021281A1 (en) * 1996-11-14 1998-05-22 Kawasaki Steel Corporation Long glass fiber-reinforced conductive thermoplastic resin molding and process for preparing the same
NL1006363C2 (en) * 1997-06-20 1998-12-22 Dsm Nv Glass fibre reinforced thermoplastic polymer pellets
JP2003221454A (en) * 2002-01-30 2003-08-05 Mazda Motor Corp Long glass fiber reinforced resin material for molding, molding method of resin molding, and resin molding
US7045202B2 (en) 2002-01-30 2006-05-16 Mazda Motor Corporation Long glass fiber filler reinforced resin material for molding, method for molding molded article, and molded article molded by the method
JP5608818B2 (en) * 2012-06-11 2014-10-15 東レプラスチック精工株式会社 Carbon fiber composite material, molded product using the same, and production method thereof

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