JPH03182557A - Metal fiber-reinforced resin composition and molded article thereof - Google Patents

Metal fiber-reinforced resin composition and molded article thereof

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Publication number
JPH03182557A
JPH03182557A JP32283089A JP32283089A JPH03182557A JP H03182557 A JPH03182557 A JP H03182557A JP 32283089 A JP32283089 A JP 32283089A JP 32283089 A JP32283089 A JP 32283089A JP H03182557 A JPH03182557 A JP H03182557A
Authority
JP
Japan
Prior art keywords
metal
resin
thermoplastic resin
metal fiber
melting point
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
JP32283089A
Other languages
Japanese (ja)
Inventor
Toru Murayama
徹 村山
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.)
Kyocera Chemical Corp
Original Assignee
Toshiba Chemical Corp
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 Toshiba Chemical Corp filed Critical Toshiba Chemical Corp
Priority to JP32283089A priority Critical patent/JPH03182557A/en
Publication of JPH03182557A publication Critical patent/JPH03182557A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To obtain the title compsn. with improved mechanical strengths by compounding a master pellet, obtd. by coating a reinforcing filler comprising a metal fiber and a low-melting metal with a thermoplastic resin, with a thermoplastic resin pellet. CONSTITUTION:The title compsn. is prepd. by compounding a master pellet, obtd. by integrally coating a reinforcing filler comprising a metal fiber and a low-melting metal with a thermoplastic resin, and with a thermoplastic resin pellet. The compsn. is injection molded at a temp. higher than the m.p. of the low-melting metal. Thereby giving a molded article with remarkably improved mechanical strengths when compared with a molded article made of the thermoplastic resin alone. In the injection molding of the compsn., the metal fibers dispersed in the resin are joined with each other by the low-melting metal to form a three-dimensional network structure spreading throughout the resin. The network structure, coupled with the adhesion between the metal fiber and the resin, enables the production of a composite material having very high mechanical and physical strengths.

Description

【発明の詳細な説明】 [発明の目的] (産業上の利用分野) 本発明は、金属繊維の配合により機械的強度を向上させ
た金属繊維強化樹脂組成物およびその成形品に関する。
DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a metal fiber-reinforced resin composition whose mechanical strength is improved by blending metal fibers, and a molded article thereof.

(従来の技術) 従来から、ステンレス繊維等の金属繊維を熱可塑性樹脂
に配合することにより、これを成形材料とした成形品の
機械的強度を高めようとする試みが行われている。
(Prior Art) Attempts have heretofore been made to increase the mechanical strength of molded products using metal fibers such as stainless steel fibers as a molding material by blending them into thermoplastic resins.

しかしながら、これら金属繊維と熱可塑性樹脂の界面に
おける密着性が悪いため、界面で金属繊維が滑ってしま
い引張強度が小さくなるなど、金属繊維による十分な補
強効果が得られていないのが実状であった。
However, due to poor adhesion at the interface between these metal fibers and thermoplastic resin, the metal fibers slip at the interface, reducing the tensile strength, and the metal fibers do not provide a sufficient reinforcing effect. Ta.

これに対処して、金属繊維を酸化処理して表面に樹脂と
の親和性が比較的良好な酸化物層を設けたり、あるいは
金属繊維表面を弱酸等で腐食させて凹凸をつけるなどし
て、金属繊維と樹脂との界面における密着性を改善する
ことが考えられる。
To deal with this, we can oxidize the metal fibers to provide an oxide layer on the surface that has a relatively good affinity with resin, or corrode the surface of the metal fibers with a weak acid to create irregularities. It is possible to improve the adhesion at the interface between the metal fiber and the resin.

しかしながらこれらの処理は、密着性を高める反面、微
細な金属繊維そのものの特性、たとえば引張強度や耐衝
撃性等を低下させるおそれがあり、実用化するうえで問
題がある。
However, while these treatments improve adhesion, they may reduce the properties of the fine metal fibers themselves, such as tensile strength and impact resistance, which poses a problem for practical use.

(発明が解決しようとする課題) このように、金属繊維を熱可塑性樹脂に配合することに
より、機械的強度の大きな成形材料、成形品を得ようと
する試みがなされているものの、未だ十分な金属繊維に
よる補強効果のある成形材料、成形品が得られていない
のが現状である。
(Problems to be Solved by the Invention) Although attempts have been made to obtain molding materials and molded products with high mechanical strength by blending metal fibers with thermoplastic resins, they are still insufficient. Currently, molding materials and molded products that have a reinforcing effect using metal fibers have not been obtained.

本発明はこのような従来の問題を解決しようとするもの
で、配合した金属繊維そのものが持つ優れた特性が生か
される結果、樹脂の引張強度や耐衝撃性等の機械的強度
の向上した金属繊維強化樹脂組成物とその成形品を提供
することを目的とする。
The present invention aims to solve such conventional problems, and as a result of making use of the excellent properties of the blended metal fiber itself, the present invention creates a metal fiber with improved mechanical strength such as resin tensile strength and impact resistance. The purpose of the present invention is to provide a reinforced resin composition and a molded product thereof.

[発明の構成] (課題を解決するための手段) 本発明は、(A)金属繊維および(B)低融点金属から
なる強化充填剤の表面に(C)熱可塑性樹脂を被覆一体
化してなるマスターペレットと、(D)熱可塑性樹脂ペ
レットを配合してなることを特徴とする金属繊維強化樹
脂組成物と、この金属繊維強化樹脂組成物を、含有する
低融点金属の融点以上の温度で射出成形してなることを
特徴とする成形品である。
[Structure of the Invention] (Means for Solving the Problems) The present invention is formed by integrally coating (C) a thermoplastic resin on the surface of a reinforcing filler made of (A) metal fibers and (B) a low melting point metal. A metal fiber reinforced resin composition characterized by blending master pellets and (D) thermoplastic resin pellets, and injection of this metal fiber reinforced resin composition at a temperature equal to or higher than the melting point of the low melting point metal contained therein. It is a molded product characterized by being molded.

本発明の強化充填材に使用される(A)金属繊維として
は、機械的強度の大きい金属繊維、たとえばステンレス
鋼繊維、炭素鋼繊維、黄銅繊維等が適している。機械的
強度の小さい純銅繊維やアルミ繊維等の使用は好ましく
ない。
As the metal fiber (A) used in the reinforcing filler of the present invention, metal fibers with high mechanical strength such as stainless steel fibers, carbon steel fibers, brass fibers, etc. are suitable. It is not preferable to use pure copper fibers, aluminum fibers, etc., which have low mechanical strength.

またこの(A)金属繊維として、表面1こ銅メ・ツキや
ハンダメツキにより金属層を設けた機械的強度の大きい
繊維、たとえば炭素繊維、ボロン繊維、アラミド繊維、
シリコン力−ノくイド繊維、アルミナ繊維、タングステ
ン繊維、モリブデン繊維、シリコンカーバイドウィスカ
、アルミナウィスカ、グラファイトウィスカ等を使用す
ることもできる。
In addition, this (A) metal fiber may be a mechanically strong fiber with a metal layer provided by copper plating or solder plating on one surface, such as carbon fiber, boron fiber, aramid fiber,
Silicone fibers, alumina fibers, tungsten fibers, molybdenum fibers, silicon carbide whiskers, alumina whiskers, graphite whiskers, etc. can also be used.

なおシリコンカーバイド繊維については、CVD法また
はプリカーサ法で作製されたものの使用力(好ましい。
Regarding silicon carbide fibers, those produced by the CVD method or the precursor method are preferred.

(B)低融点金属としては、錫、錫−鉛系合金、錫−鉛
−カドミウム−銀−亜鉛系合金、錫−鉛一カドミウムー
ビスマス系合金等があげられ、成形温度に適した融点を
持つ金属の使用が好ましLl。
(B) Low melting point metals include tin, tin-lead alloys, tin-lead-cadmium-silver-zinc alloys, tin-lead-cadmium-bismuth alloys, etc., which have a melting point suitable for the forming temperature. It is preferable to use metals with Ll.

すなわち低融点金属の融点は、混合する熱可塑性樹脂の
融点より高い融点を有することが望ましく、より望まし
くは、射出成形機の加熱シリンダーの最も温度の高い部
位で、溶融するような低融点金属を選択使用することで
ある。
In other words, it is desirable that the melting point of the low melting point metal is higher than that of the thermoplastic resin to be mixed, and more preferably, the low melting point metal is such that it melts at the highest temperature part of the heating cylinder of the injection molding machine. It is your choice to use.

なおこれらの低融点金属の形状は、特に限定されるもの
ではなく、繊維状、線状、棒状、粒状等いかなる形状の
ものであってもよい。
Note that the shape of these low-melting point metals is not particularly limited, and may be any shape such as fibrous, linear, rod-like, or granular.

本発明において、(A)の金属繊維は(B)の低融点金
属と集合させるが、その方法としては、金属繊維と繊維
状の低融点金属とを単に集合させても、金属繊維の表面
に低融点金属の層を、電気メツキ、溶融体浸漬等の方法
により、形成するようにしてもよい。また、金属繊維に
粒状の低融点金属をサイジングしてもよく、その集合方
法を特に限定するものではない。
In the present invention, the metal fibers (A) are aggregated with the low melting point metal (B), but as for the method, even if the metal fibers and the fibrous low melting point metal are simply aggregated, the surface of the metal fibers is The layer of low melting point metal may be formed by electroplating, melt immersion, or other methods. Further, the metal fibers may be sized with particulate low melting point metal, and the method of gathering them is not particularly limited.

(B)の低融点金属の配合量は、(A)の金属繊維に対
して5〜30重量%の範囲が望ましい。5重j1%未満
では、金属繊維を結合、被覆することが不十分となり、
また30重it%を越えると、過剰の低融点金属が遊離
して組成物の物性を低下させる。
The blending amount of the low melting point metal (B) is preferably in the range of 5 to 30% by weight based on the metal fiber (A). If the weight is less than 1%, bonding and coating of metal fibers will be insufficient,
Moreover, when it exceeds 30 weight %, excessive low melting point metal is liberated and the physical properties of the composition are deteriorated.

本発明において、このような(A)金属繊維および(B
)低融点金属からなる強化充填材の表面に被覆され°る
(C)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、ポリスチレン樹脂、透明ABS樹脂、
ABS樹脂、変成ポリフェニレンオキサイド樹脂(変成
PPO樹脂)、ポリカーボネイト樹脂、ポリアミド樹脂
、ポリブチレンテレフタレート樹脂、ポリエーテルイミ
ド樹脂等があげられる。
In the present invention, such (A) metal fibers and (B
) The thermoplastic resin (C) coated on the surface of the reinforcing filler made of a low melting point metal includes polyethylene resin, polypropylene resin, polystyrene resin, transparent ABS resin,
Examples include ABS resin, modified polyphenylene oxide resin (modified PPO resin), polycarbonate resin, polyamide resin, polybutylene terephthalate resin, and polyetherimide resin.

さらに(D)熱可塑性樹脂ベレ・ソト(以下ナチュラル
ペレット)には、前記の(C)熱可塑性樹脂と、同種ま
たは同一のもののほか、(C)の熱可塑性樹脂と混合さ
れることによって界面に形成される第三の合成樹脂が補
強効果をもつもの、すなわちブレンドポリマーとなるも
のでもよい。たとえば、(C)の熱可塑性樹脂として、
変成PPO樹脂、ポリカーボネイト樹脂等を使用すると
きは、ナチュラルペレットとして、スチレン系の熱可塑
性樹脂を使用すると、界面に補強効果を有する第三の合
成樹脂層が形成され、より特性の優れた成形品を得るこ
とができる。
Furthermore, (D) thermoplastic resin Bere Soto (hereinafter referred to as natural pellets) has the same or the same type as the above-mentioned (C) thermoplastic resin, and is also mixed with (C) thermoplastic resin to form an interface. The third synthetic resin formed may have a reinforcing effect, that is, it may be a blended polymer. For example, as the thermoplastic resin (C),
When using modified PPO resin, polycarbonate resin, etc., if a styrene-based thermoplastic resin is used as natural pellets, a third synthetic resin layer with a reinforcing effect will be formed at the interface, resulting in a molded product with better properties. can be obtained.

本発明の金属繊維強化樹脂組成物およびその成形品は、
通常次のようにして製造される。
The metal fiber reinforced resin composition of the present invention and its molded product include:
It is usually manufactured as follows.

長繊維状の金pA繊維と低融点金属とを集合させ、これ
を押出機のダイスに通過させて、表面に熱可塑性樹脂を
被覆一体化させた後、適当な大きさのベレット状に切断
してマスターベレットとする。
Long fibrous gold pA fibers and low melting point metal are aggregated, passed through a die of an extruder, the surface is coated with thermoplastic resin, and then cut into pellets of appropriate size. and the master beret.

なおこのマスターペレットは通常断面が円形であるが、
偏平、その他の形状であってもよい。またマスターペレ
ットの製造工程は連続工程とすることが経済的に有利で
あるが、バッチ方式としてもよい。
This master pellet usually has a circular cross section, but
It may be flat or in other shapes. Although it is economically advantageous to carry out the master pellet manufacturing process as a continuous process, it may also be a batch process.

次いで、このマスターペレットに、熱可塑性樹脂のみか
らなるナチュラルベレットを配合して本発明の金属繊維
強化樹脂組成物とする。ナチュラルベレットの配合量は
、金属繊維強化樹脂組成物やその成形品に要求される特
性に応じて、熱可塑性樹脂およびその量が適切に選択さ
れる。
Next, natural pellets made only of thermoplastic resin are blended with the master pellets to obtain the metal fiber reinforced resin composition of the present invention. The amount of natural pellets to be blended is appropriately selected based on the thermoplastic resin and the amount thereof, depending on the properties required of the metal fiber-reinforced resin composition and its molded product.

このようにして製造された金属繊維強化樹脂組成物を、
この中に配合されている低融点金属の融点以上の温度で
射出成形し、機械的強度が熱可塑性樹脂のみで成形され
た成形品に比べて大幅に向上した成形品が得られる。
The metal fiber reinforced resin composition produced in this way,
Injection molding is performed at a temperature higher than the melting point of the low melting point metal blended therein, resulting in a molded product with significantly improved mechanical strength compared to a molded product molded only from thermoplastic resin.

この機械的強度の増大効果は次のように説明される。This mechanical strength increasing effect is explained as follows.

すなわち、金属繊維強化樹脂組成物の射出工程において
、金属繊維が低融点金属により相互に接合され、網目状
構造を形成する。この網目状構造は三次元的に樹脂内に
広がり、単に金属繊維と樹脂との接着強度だけに期待す
るだけでなく、三次元網目状構造と樹脂という機械的に
も物理的にもはるかに強固な複合体が得られる。
That is, in the injection process of the metal fiber reinforced resin composition, metal fibers are joined to each other by a low melting point metal to form a network structure. This network structure spreads three-dimensionally within the resin, and is expected not only from the adhesive strength between the metal fiber and the resin, but also because the three-dimensional network structure and resin are much stronger mechanically and physically. A complex is obtained.

(作 用) 本発明においては、金属繊維と低融点金属の集合体の表
面に熱可塑性樹脂を一体に被覆したベレットと、熱可塑
性樹脂ベレットとを混合したことにより、金属繊維相互
の接合点が低融点金属を介して接合され、強固な三次元
網目状構造が形成されるため、金属繊維と周囲の樹脂と
の滑りが防止される結果、金属繊維自身が持つ本来の特
性が生かされて、成形品の機械的強度が向上する。
(Function) In the present invention, by mixing a thermoplastic resin pellet with a pellet in which the surface of an aggregate of metal fibers and a low-melting metal is integrally coated with a thermoplastic resin, the bonding points between the metal fibers are fixed. They are bonded via a low melting point metal to form a strong three-dimensional network structure, which prevents the metal fibers from slipping with the surrounding resin, making the most of the original properties of the metal fibers themselves. The mechanical strength of molded products is improved.

(実施例) 以下、本発明の実施例を記載する。(Example) Examples of the present invention will be described below.

実施例 直径15μmの長尺の予めハンダメツキしたステンレス
繊維を 200本束ね 1本の繊維束とする。
Example 200 long pre-soldered stainless steel fibers with a diameter of 15 μm were bundled into one fiber bundle.

次に、押出機のダイス内を通し、その表面をABS樹脂
で薄く被覆し、長さ 5−一に切断してマスターペレッ
トとした。このマスターベレット15重量部と、ABS
樹脂のナチュラルベレット85重量部とを混合して金属
繊維強化樹脂組成物を得た。
Next, the pellets were passed through a die of an extruder, the surface of which was thinly coated with ABS resin, and the pellets were cut into 5-1 lengths to form master pellets. 15 parts by weight of this master pellet and ABS
A metal fiber reinforced resin composition was obtained by mixing with 85 parts by weight of natural pellet resin.

なお組成物中のステンレス繊維の配合量は10重量%で
あった。
The amount of stainless steel fiber in the composition was 10% by weight.

得られた金属繊維強化樹脂組成物を用いて、シリンダー
温度220℃の条件で射出成形し、得られた成形品の機
械的強度を測定した。
The obtained metal fiber reinforced resin composition was injection molded at a cylinder temperature of 220° C., and the mechanical strength of the obtained molded product was measured.

結果は、引張り強さ440 kg/ cd (ASTM
 D638)であり、ハンダを被覆しない単純なステン
レス繊維の同一配合量で補強した成形品の引張り強さ4
30)cg/cJに比べ、約2%の強度の向上が認めら
れた。
The result was a tensile strength of 440 kg/cd (ASTM
D638), and the tensile strength of a molded product reinforced with the same amount of simple stainless fiber without solder coating is 4.
30) Approximately 2% improvement in strength was observed compared to cg/cJ.

[発明の効果] 以上説明したように、本発明の金属繊維強化樹脂組成物
は、金属繊維および低融点金属からなる強化充填剤の表
面に熱可塑性樹脂を被覆一体化してなるマスターペレッ
トと、熱可塑性樹脂ペレットを配合したことにより、樹
脂内に金属繊維および低融点金属からなる強固な三次元
の網目構造が形成されるため、金属繊維の特性が生かさ
れて、機械的強度が向上する。
[Effects of the Invention] As explained above, the metal fiber reinforced resin composition of the present invention combines a master pellet formed by integrally coating a thermoplastic resin on the surface of a reinforcing filler made of metal fibers and a low melting point metal, and By blending plastic resin pellets, a strong three-dimensional network structure consisting of metal fibers and low-melting point metal is formed within the resin, so the characteristics of metal fibers are utilized to improve mechanical strength.

またこの金属繊維強化樹脂組成物によって成形された成
形品は高い機械的強度を有している。
Furthermore, molded articles made from this metal fiber reinforced resin composition have high mechanical strength.

Claims (2)

【特許請求の範囲】[Claims] (1)(A)金属繊維および(B)低融点金属からなる
強化充填剤の表面に(C)熱可塑性樹脂を被覆一体化し
てなるマスターペレットと、(D)熱可塑性樹脂ペレッ
トとを配合してなることを特徴とする金属繊維強化樹脂
組成物。
(1) A master pellet formed by integrally coating (C) a thermoplastic resin on the surface of a reinforcing filler made of (A) metal fibers and (B) a low melting point metal, and (D) a thermoplastic resin pellet are blended. A metal fiber reinforced resin composition characterized by:
(2)請求項1記載の金属繊維強化樹脂組成物を、含有
する低融点金属の融点以上の温度で射出成形してなるこ
とを特徴とする金属繊維強化樹脂成形品。
(2) A metal fiber reinforced resin molded article, which is obtained by injection molding the metal fiber reinforced resin composition according to claim 1 at a temperature equal to or higher than the melting point of the low melting point metal contained therein.
JP32283089A 1989-12-12 1989-12-12 Metal fiber-reinforced resin composition and molded article thereof Pending JPH03182557A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP32283089A JPH03182557A (en) 1989-12-12 1989-12-12 Metal fiber-reinforced resin composition and molded article thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP32283089A JPH03182557A (en) 1989-12-12 1989-12-12 Metal fiber-reinforced resin composition and molded article thereof

Publications (1)

Publication Number Publication Date
JPH03182557A true JPH03182557A (en) 1991-08-08

Family

ID=18148081

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JPH03182557A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1089776C (en) * 1999-11-05 2002-08-28 浙江大学 Method of preparing composite polymer-inorganic matter material
JP2005263388A (en) * 2004-03-17 2005-09-29 Kawaju Gifu Engineering Kk Trough unit and air levitation belt conveyor device using the trough unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1089776C (en) * 1999-11-05 2002-08-28 浙江大学 Method of preparing composite polymer-inorganic matter material
JP2005263388A (en) * 2004-03-17 2005-09-29 Kawaju Gifu Engineering Kk Trough unit and air levitation belt conveyor device using the trough unit

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