JPH08259750A - Production of fiber-reinforced polypropylene composition - Google Patents
Production of fiber-reinforced polypropylene compositionInfo
- Publication number
- JPH08259750A JPH08259750A JP6548195A JP6548195A JPH08259750A JP H08259750 A JPH08259750 A JP H08259750A JP 6548195 A JP6548195 A JP 6548195A JP 6548195 A JP6548195 A JP 6548195A JP H08259750 A JPH08259750 A JP H08259750A
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- Prior art keywords
- fibrous
- composition
- mos
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、機械的強度及び耐衝撃
性のバランスが優れてた成形品を与えることのできる、
繊維強化ポリプロピレン組成物を製造する方法に関す
る。FIELD OF THE INVENTION The present invention can provide a molded article having an excellent balance of mechanical strength and impact resistance.
It relates to a method for producing a fiber-reinforced polypropylene composition.
【０００２】[0002]
【従来の技術及び解決すべき課題】繊維状マグネシウム
オキシサルフェ−ト（以下特別の断りのない限り「繊維
状ＭＯＳ」と言う。）で強化されたポリプロピレン組成
物及びその製造法について多くの提案がされている。BACKGROUND OF THE INVENTION Many proposals for a polypropylene composition reinforced with fibrous magnesium oxysulfate (hereinafter referred to as "fibrous MOS" unless otherwise specified) and a method for producing the same. Has been done.
【０００３】例えば、特公昭６２−９２６０号公報に
は、結晶性ポリプロピレンと繊維状ＭＯＳとかなる組成
物が開示されており、この組成物が、さらにタルクによ
うな無機充填剤、エチレン−プロピレンゴムのようなエ
ラストマ−を含有してもよいことが開示されている。For example, Japanese Examined Patent Publication No. 62-9260 discloses a composition comprising crystalline polypropylene and fibrous MOS. This composition further comprises an inorganic filler such as talc, ethylene-propylene rubber. It is disclosed that an elastomer such as
【０００４】繊維状ＭＯＳとポリプロピレン樹脂との混
練性を改善するために、繊維状ＭＯＳを予め造粒し、造
粒された繊維状ＭＯＳとポリプロピレン樹脂とを溶融混
練することが、特公平６−８６２９０号公報に開示され
ている。さらに、特公平６−１０２７４４号公報には、
ポリプロピレン、エラストマ−、造粒された繊維状ＭＯ
Ｓ、及びタルクからなる組成物が記載されている。In order to improve the kneading property of the fibrous MOS and the polypropylene resin, it is possible to granulate the fibrous MOS in advance and melt-knead the granulated fibrous MOS and the polypropylene resin. It is disclosed in Japanese Patent No. 86290. Furthermore, Japanese Patent Publication No. 6-102744 discloses that
Polypropylene, elastomer, granulated fibrous MO
A composition consisting of S and talc is described.
【０００５】これらの公報には、ポリプロピレンに混練
する前の繊維状ＭＯＳの繊維径、繊維長、あるいはアス
ペクト比についての記載があるが、ポリプロピレンと溶
融混練された後の繊維状ＭＯＳ、即ち組成物中の繊維状
ＭＯＳの形状についての記載はまったくない。Although these publications describe the fiber diameter, fiber length, or aspect ratio of the fibrous MOS before kneading with polypropylene, the fibrous MOS after being melt-kneaded with polypropylene, that is, the composition. There is no description about the shape of the fibrous MOS therein.
【０００６】本発明者らは繊維状ＭＯＳの特性について
検討した結果、繊維状ＭＯＳは剪断力を受けると切断す
る傾向にあり、特に、ポリプロピレン及び繊維状ＭＯＳ
を二軸押出機のような混練機で混練すると、繊維状ＭＯ
Ｓの繊維長が大幅に低減することを見いだした。そし
て、繊維状ＭＯＳで強化された組成物を調製する場合に
は、ポリプロピレンと混練する前の繊維状ＭＯＳの繊維
長だけでなく、混練で得られる組成物中の繊維状ＭＯＳ
の繊維長を併せて考慮する必要があることを見い出し
た。The present inventors have examined the characteristics of the fibrous MOS, and as a result, the fibrous MOS tends to be cut when subjected to a shearing force, and particularly polypropylene and fibrous MOS.
When kneaded with a kneader such as a twin-screw extruder, fibrous MO
It has been found that the fiber length of S is significantly reduced. When preparing a composition reinforced with fibrous MOS, not only the fiber length of the fibrous MOS before kneading with polypropylene but also the fibrous MOS in the composition obtained by kneading
It was found that it is necessary to consider the fiber length of
【０００７】[0007]
【課題を解決するための手段】本発明は上記の知見に基
づくものであり、本発明によれば、ポリプロピレン１０
０重量部、及び平均繊維長５〜２０μｍ、平均アスペク
ト比２０〜５０の繊維状マグネシウムオキシサルフェ−
ト３〜５０重量部を溶融混練して繊維強化ポリプロピレ
ン組成物を製造するに際し、この組成物中の繊維状マグ
ネシウムオキシサルフェ−トの平均繊維長が３〜６μ
ｍ、平均アスペクトト比が５〜１５になるまで、溶融混
練を行うことを特徴とする繊維強化ポリプロピレン組成
物の製造法が提供される。The present invention is based on the above findings, and according to the present invention, polypropylene 10 is used.
0 parts by weight, fibrous magnesium oxysulfate having an average fiber length of 5 to 20 μm and an average aspect ratio of 20 to 50
In producing a fiber-reinforced polypropylene composition by melt-kneading 3 to 50 parts by weight, the average fiber length of the fibrous magnesium oxysulfate in the composition is 3 to 6 μm.
A method for producing a fiber-reinforced polypropylene composition, characterized in that melt-kneading is performed until m and the average aspect ratio become 5 to 15.
【０００８】本発明における繊維状ＭＯＳの平均繊維長
及び平均アスペクト比は、繊維状ＭＯＳを電界放射型走
査電子顕微鏡（日立製作所製、Ｓ−５０００型）によっ
て観察した結果から算出したものである。組成物中の繊
維状ＭＯＳは、組成物を熱キシレンで処理し、ポリプロ
ピレンをキシレンに抽出除去した後に、試料として使用
した。The average fiber length and the average aspect ratio of the fibrous MOS in the present invention are calculated from the results of observing the fibrous MOS with a field emission scanning electron microscope (S-5000 manufactured by Hitachi, Ltd.). The fibrous MOS in the composition was used as a sample after treating the composition with hot xylene and extracting and removing polypropylene to xylene.
【０００９】本発明で使用されるポリプロピレンの具体
例としては、プロピレンの単独重合体、プロピレンとプ
ロピレン以外のα−オレフィン、例えば、エチレン、ブ
テン−１、ヘキセン−１、オクテン−１との共重合体、
これらの混合物が挙げられる。これらの中でも、プロピ
レンとエチレンとのブッロク共重合体が好適に使用され
うる。このブロック重合体は、例えば、プロピレンの単
独重合体の存在下に、プロピレンとエチレンとを共重合
させることによって調製することができる。プロピレン
とエチレンとのブロック共重合体におけるエチレンの含
有割合は、一般に１〜２０重量％、好ましくは１〜１０
重量％である。Specific examples of the polypropylene used in the present invention include homopolymers of propylene, and copolymerization of propylene with α-olefins other than propylene, for example, ethylene, butene-1, hexene-1, and octene-1. Coalescing,
These mixtures are mentioned. Among these, a block copolymer of propylene and ethylene can be preferably used. This block polymer can be prepared, for example, by copolymerizing propylene and ethylene in the presence of a propylene homopolymer. The content ratio of ethylene in the block copolymer of propylene and ethylene is generally 1 to 20% by weight, preferably 1 to 10%.
% By weight.
【００１０】本発明で使用される繊維状ＭＯＳは、それ
自体公知の無機質充填剤であり、宇部化学工業株式会社
からモスハイジ（登録商標）として市販されている。本
発明で重要なことの一つは、ポリプロピレンと溶融混練
する前の繊維状ＭＯＳの平均繊維長が５〜２０ｍμであ
り、かつその平均アスペクト比が２０〜５０であること
である。The fibrous MOS used in the present invention is an inorganic filler known per se, and is commercially available from Ube Chemical Industry Co., Ltd. as Mosheige (registered trademark). One of the important things in the present invention is that the fibrous MOS before melt-kneading with polypropylene has an average fiber length of 5 to 20 mμ and an average aspect ratio of 20 to 50.
【００１１】ポリプロピレンと溶融混練する前の繊維状
ＭＯＳの平均繊維長が５μｍであったり、その平均アス
ペクト比が２０未満であったりすると、この繊維状ＭＯ
Ｓとポリプロピレンとを均一に混合して得られる組成物
中において、繊維状ＭＯＳの平均繊維長が過度に小さく
なり、組成物に充分な補強効果を付与しない。逆に、ポ
リプロピレンと溶融混練する前の繊維状ＭＯＳの平均繊
維長が２０μｍより大きかったり、その平均アスペクト
比が５０より大きかったりすると、この繊維状ＭＯＳと
ポリプロピレンとの溶融混練が困難になる。If the average fiber length of the fibrous MOS before melt-kneading with polypropylene is 5 μm or the average aspect ratio thereof is less than 20, this fibrous MO is produced.
In the composition obtained by uniformly mixing S and polypropylene, the average fiber length of the fibrous MOS becomes excessively small and the composition does not have a sufficient reinforcing effect. On the contrary, if the average fiber length of the fibrous MOS before melt-kneading with polypropylene is larger than 20 μm or the average aspect ratio thereof is larger than 50, it becomes difficult to melt-knead the fibrous MOS and polypropylene.
【００１２】本発明で使用される繊維状ＭＯＳは、ポリ
プロピレンと溶融混練する前に予め造粒することが、溶
融混練機として使用される押出機への供給を容易にする
ために好ましい。繊維状ＭＯＳの造粒は、それ自体公知
の方法によって行うことができる。一例を示すと、硫酸
マグネシウム及び酸化マグネシウムの水熱合成反応によ
って得られる繊維状ＭＯＳの水性懸濁液を脱水し、脱水
物をノズルから紐状に押し出した後に切断し、ついで乾
燥することによって容易に得ることができる。繊維状Ｍ
ＯＳの造粒物の見掛け比重は、一般に０．１３〜０．２
５であり、その直径は一般に０．５〜５ｍｍである。The fibrous MOS used in the present invention is preferably granulated in advance before being melt-kneaded with polypropylene in order to facilitate supply to an extruder used as a melt-kneader. Granulation of the fibrous MOS can be performed by a method known per se. As an example, it is easy to dehydrate an aqueous suspension of fibrous MOS obtained by a hydrothermal synthesis reaction of magnesium sulfate and magnesium oxide, extrude the dehydrated product from a nozzle in a string shape, cut it, and then dry it. Can be obtained. Fibrous M
The apparent specific gravity of OS granules is generally 0.13 to 0.2.
5 and its diameter is generally 0.5-5 mm.
【００１３】繊維状ＭＯＳの使用量は、ポリプロピレン
１００重量当たり、３〜５０重量部、好ましくは３〜２
０重量部である。繊維状ＭＯＳの使用量が下限より少な
いと、組成物に充分な機械的強度を付与することができ
ず、その使用量が上限より多くなると、組成物の外観が
低下する。The amount of fibrous MOS used is 3 to 50 parts by weight, preferably 3 to 2 per 100 parts by weight of polypropylene.
0 parts by weight. If the amount of the fibrous MOS used is less than the lower limit, sufficient mechanical strength cannot be imparted to the composition, and if the amount used exceeds the upper limit, the appearance of the composition deteriorates.
【００１４】ポリプロピレン及び繊維状ＭＯＳを溶融混
練する方法については特別の制限はなく、公知の押出機
を用いて両者を溶融混練することができるが、両者の混
練を均一に行うためには、二軸の押出機を用いることが
好ましい。ポリプロピレンと繊維状ＭＯＳとの溶融混練
温度は、ポリプロピレンの融点以上であれば特に制限は
ないが、過度に高いと繊維状ＭＯＳの分解が激しく起こ
るようになるので、一般には２６０℃以下である。There is no particular limitation on the method of melt-kneading polypropylene and the fibrous MOS, and both can be melt-kneaded using a known extruder. However, in order to uniformly knead both, It is preferred to use a screw extruder. The melt-kneading temperature of polypropylene and the fibrous MOS is not particularly limited as long as it is equal to or higher than the melting point of polypropylene, but if it is excessively high, the fibrous MOS is decomposed violently, and therefore is generally 260 ° C. or lower.
【００１５】本発明においてさらに重要なことは、ポリ
プロピレン及び繊維状ＭＯＳの溶融混練で得られる組成
物中において、繊維状ＭＯＳの平均繊維長が３〜６μ
ｍ、平均アスペクトト比が５〜１５になるまで、両者の
溶融混練を行うことである。既述したように、繊維状Ｍ
ＯＳは剪断力を受けると、切断してその繊維長が低下す
るが、充分は補強効果を発現するためには、上記の平均
長及び平均アスペクト比を保持することが必要である。More importantly in the present invention, in the composition obtained by melt-kneading polypropylene and fibrous MOS, the average fiber length of fibrous MOS is 3 to 6 μm.
m and an average aspect ratio of 5 to 15 are melt-kneaded. As mentioned above, fibrous M
When OS is subjected to shearing force, it is cut and the fiber length thereof is reduced, but it is necessary to maintain the above-mentioned average length and average aspect ratio in order to sufficiently exert the reinforcing effect.
【００１６】組成物中の平均繊維長が３μｍであった
り、平均アスペクト比が５未満であったりすると、組成
物の機械的強度が小さくなり、他方、平均繊維長が６μ
ｍより大きかったり、平均アスペクト比が１５より大き
かったりすると、溶融混練機として二軸の押出機を用い
た場合においても、ポリプロピレンと繊維状ＭＯＳとの
混練が不充分になり、均質な組成物を得ることが困難に
なる。When the average fiber length in the composition is 3 μm or the average aspect ratio is less than 5, the mechanical strength of the composition becomes small, while the average fiber length is 6 μm.
If it is larger than m or the average aspect ratio is larger than 15, even when a twin-screw extruder is used as the melt-kneading machine, the polypropylene and the fibrous MOS are not sufficiently kneaded, and a homogeneous composition is obtained. Hard to get.
【００１７】本発明の組成物は、繊維状ＭＯＳ以外の公
知の無機質充填剤を含有することができる。粒子状の無
機質充填剤の具体例としては、炭酸カルシウム、硫酸バ
リウム、水酸化マグネシウムが挙げられる。板状の無機
質充填剤の具体例としては、タルク、マイカ、クレ−、
ガラスフレ−ク、グラファイト、アルミナフレ−クが挙
げられる。繊維状の無機質充填剤の具体例としては、ガ
ラス繊維、炭素繊維、金属繊維、有機重合体繊維などが
挙げられる。The composition of the present invention may contain a known inorganic filler other than the fibrous MOS. Specific examples of the particulate inorganic filler include calcium carbonate, barium sulfate and magnesium hydroxide. Specific examples of the plate-shaped inorganic filler include talc, mica, clay,
Examples thereof include glass flakes, graphite and alumina flakes. Specific examples of the fibrous inorganic filler include glass fiber, carbon fiber, metal fiber, organic polymer fiber and the like.
【００１８】上記の無機質充填剤の中でも、繊維状ＭＯ
Ｓとの組合せにおいて、組成物の耐衝撃強度の向上に効
果を有するタルクを併用することが好ましい。タルクの
平均粒子径は０．５〜３μｍであることが好ましく、ま
た、その使用量は、ポリプロピレン１００重量部当た
り、３〜５０重量部、特に３〜３０重量部であることが
好ましい。Among the above-mentioned inorganic fillers, fibrous MO
In combination with S, it is preferable to use together talc which has an effect of improving the impact strength of the composition. The average particle size of talc is preferably 0.5 to 3 μm, and the amount thereof used is preferably 3 to 50 parts by weight, and particularly preferably 3 to 30 parts by weight, per 100 parts by weight of polypropylene.
【００１９】本発明の組成物は、組成物の耐衝撃性をよ
り向上させる目的で、それ自体公知のエラストマ−を含
有することができる。エラストマ−の具体例としては、
エチレン−プロピレンゴム、エチレン−プロピレン−ジ
エンゴムのようなオレフィン系エラストマ−、スチレン
−ブタジエンゴム、スチレン−ブタジエン−スチレンゴ
ム、スチレン−エチレン−ブタジエン−スチレンゴム、
スチレン−イソプレン−スチレンゴムのようなスチレン
系エラストマ−が挙げられる。これらのエラストマ−の
使用割合は、ポリプロピレン１００重量部当たり、一般
には２〜２０重量部である。The composition of the present invention may contain an elastomer known per se for the purpose of further improving the impact resistance of the composition. As a specific example of the elastomer,
Olefin-based elastomers such as ethylene-propylene rubber and ethylene-propylene-diene rubber, styrene-butadiene rubber, styrene-butadiene-styrene rubber, styrene-ethylene-butadiene-styrene rubber,
Examples thereof include styrene elastomers such as styrene-isoprene-styrene rubber. The use ratio of these elastomers is generally 2 to 20 parts by weight per 100 parts by weight of polypropylene.
【００２０】本発明の組成物は、さらに、それ自体公知
の添加剤、例えば、酸化防止剤、難燃剤、紫外線吸収
剤、帯電防止剤、滑剤、離型剤、着色剤を含むことがで
きる。本発明の組成物は、例えば、射出成形、押出成
形、圧縮成形によって種々の成形品に成形することがで
きる。The composition of the present invention may further contain additives known per se, for example, antioxidants, flame retardants, ultraviolet absorbers, antistatic agents, lubricants, release agents and colorants. The composition of the present invention can be molded into various molded articles by, for example, injection molding, extrusion molding or compression molding.
【００２１】[0021]
【実施例】以下に実施例及び比較例を示す。以下の記載
において、「部」及び「％」は、それぞれ、「重量部」
及び「重量％」を示す。成形品の特性は以下の方法で測
定した。 引張強度 ＡＳＴＭ Ｄ−６３８（ｋｇ／ｃｍ2 ） 曲げ強度 ＡＳＴＭ Ｄ−７９０（ｋｇ／ｃｍ2 ） 曲げ弾性率 ＡＳＴＭ Ｄ−７９０（ｋｇ／ｃｍ2 ） アイゾット衝撃強度 ＡＳＴＭ Ｄ−２５６（ｋｇ・ｃｍ／ｃｍ）（２３℃）EXAMPLES Examples and comparative examples will be shown below. In the following description, "part" and "%" are "parts by weight", respectively.
And "% by weight" are shown. The characteristics of the molded product were measured by the following methods. Tensile strength ASTM D-638 (kg / cm 2 ) Bending strength ASTM D-790 (kg / cm 2 ) Bending elastic modulus ASTM D-790 (kg / cm 2 ) Izod impact strength ASTM D-256 (kgcm / cm 2 ) ) (23 ℃)
【００２２】実施例１ エチレン含量３．５ ％、メルトフロ−レイト２０ｇ／
１０分（２３０℃）の結晶性エチレン−プロピレンブロ
ック共重合体（ＥＰＢＣ）１００部に、平均繊維長１０
μｍ、平均アスペクト比３２の繊維状ＭＯＳからなり、
かつ、見掛け比重０．１８の造粒繊維状ＭＯＳ８部、ス
チレン−エチレン−ブタジエン−スチレンゴム（ＳＥＢ
Ｓ：シェル製、クレイトンＧ１６５７）８部、平均粒径
２μｍのタルク２０部、及び酸化防止剤としてヨシノッ
クスＢＨＴ（吉富製薬製）０．１部及びイルガノックス
１０１０（チバガイギ−製）０．２部、さらに分散剤と
してステアリン酸マグネシウム０．２部をドライブレン
ドした。ドライブレンド物を、ついで二軸押出機のホッ
パ−に投入し、設定温度２２０℃で溶融混練して、組成
物を調製した。得られた組成物中の繊維状ＭＯＳの平均
繊維長は４．２μ、平均アスペクト比は１４であった。Example 1 Ethylene content 3.5%, melt flow rate 20 g /
An average fiber length of 10 is added to 100 parts of crystalline ethylene-propylene block copolymer (EPBC) for 10 minutes (230 ° C.).
consisting of fibrous MOS with an average aspect ratio of 32,
Moreover, 8 parts of granulated fibrous MOS having an apparent specific gravity of 0.18, styrene-ethylene-butadiene-styrene rubber (SEB
S: made by Shell, Kraton G1657) 8 parts, talc 20 parts with an average particle size of 2 μm, and Yoshinox BHT (manufactured by Yoshitomi Pharmaceutical Co., Ltd.) 0.1 part and Irganox 1010 (manufactured by Ciba-Geigy) 0.2 parts as antioxidants, Further, 0.2 part of magnesium stearate was dry blended as a dispersant. Then, the dry blend was put into a hopper of a twin-screw extruder and melt-kneaded at a preset temperature of 220 ° C. to prepare a composition. The average fiber length of the fibrous MOS in the obtained composition was 4.2 μ, and the average aspect ratio was 14.
【００２３】得られた組成物を、シリンダ−設定温度２
２０℃、金型温度５０℃の条件で宇部興産製ＵＢＥ−Ｍ
ＡＸ Ｄ１５０−１０射出成形機にて射出成形し、物性
測定用の試験片を作成し物性を測定した。結果を表１に
示す。尚、表１においては繊維状ＭＯＳを単にＭＯＳと
略記する。The resulting composition was applied to a cylinder at a set temperature of 2
UBE-M made by Ube Industries under conditions of 20 ° C and mold temperature of 50 ° C
Injection molding was performed with an AX D150-10 injection molding machine, and a test piece for measuring physical properties was prepared to measure physical properties. The results are shown in Table 1. In Table 1, the fibrous MOS is simply abbreviated as MOS.
【００２４】実施例２ 造粒繊維状ＭＯＳ、ＳＥＢＳ、及びタルクの配合量を、
それぞれ、１８部、１５部、及び２０部に代えた以外は
実施例１を繰り返した。得られた組成物中の繊維状ＭＯ
Ｓの平均繊維長は４μｍ、平均アスペクト比は１３であ
った。組成物から得られた試験片の物性を表１に示す。Example 2 The blending amounts of granulated fibrous MOS, SEBS, and talc were
Example 1 was repeated except that 18 parts, 15 parts and 20 parts were respectively substituted. Fibrous MO in the obtained composition
The average fiber length of S was 4 μm, and the average aspect ratio was 13. The physical properties of the test pieces obtained from the composition are shown in Table 1.
【００２５】比較例１ 組成物中の繊維状ＭＯＳの平均繊維長が１．３μｍ、平
均アスペクト比が４になるように混練条件を調整した以
外は実施例１を繰り返した。組成物から得られが試験片
の物性を表１に示す。Comparative Example 1 Example 1 was repeated except that the kneading conditions were adjusted so that the average fiber length of the fibrous MOS in the composition was 1.3 μm and the average aspect ratio was 4. The physical properties of the test pieces obtained from the composition are shown in Table 1.
【００２６】比較例２ 組成物物中の繊維状ＭＯＳの平均繊維長が０．７μｍ、
平均アスペクト比が２２になるように混練条件を調整し
た以外は実施例１を繰り返した。組成物から得られた試
験片の物性を表１に示す。Comparative Example 2 The average fiber length of the fibrous MOS in the composition was 0.7 μm,
Example 1 was repeated except that the kneading conditions were adjusted so that the average aspect ratio was 22. The physical properties of the test pieces obtained from the composition are shown in Table 1.
【００２７】[0027]
【表１】 [Table 1]
Claims (3)
維長５〜２０μｍ、平均アスペクト比２０〜５０の繊維
状マグネシウムオキシサルフェ−ト３〜５０重量部を溶
融混練して繊維強化ポリプロピレン組成物を製造するに
際し、この組成物中の繊維状マグネシウムオキシサルフ
ェ−トの平均繊維長が３〜６μｍ、平均アスペクトト比
が５〜１５になるまで、溶融混練を行うことを特徴とす
る繊維強化ポリプロピレン組成物の製造法。1. A fiber-reinforced polypropylene composition is prepared by melt-kneading 100 parts by weight of polypropylene and 3 to 50 parts by weight of fibrous magnesium oxysulfate having an average fiber length of 5 to 20 μm and an average aspect ratio of 20 to 50. In doing so, the fiber-reinforced polypropylene composition is characterized in that melt kneading is carried out until the average fiber length of the fibrous magnesium oxysulfate in this composition becomes 3 to 6 μm and the average aspect ratio becomes 5 to 15. Method of manufacturing things.
５〜２０μｍ、平均アスペクト比２０〜５０の繊維状マ
グネシウムオキシサルフェ−ト３〜５０重量部、及び平
均粒子径０．５〜３μｍのタルク３〜５０重量部を溶融
混練して繊維強化ポリプロピレン組成物を製造するに際
し、この組成物中の繊維状マグネシウムオキシサルフェ
−トの平均繊維長が３〜６μｍ、平均アスペクトト比が
５〜１５になるまで、溶融混練を行うことを特徴とする
繊維強化ポリプロピレン組成物の製造法。2. 100 parts by weight of polypropylene, 3 to 50 parts by weight of fibrous magnesium oxysulfate having an average fiber length of 5 to 20 μm, an average aspect ratio of 20 to 50, and talc 3 having an average particle diameter of 0.5 to 3 μm. In producing a fiber-reinforced polypropylene composition by melt kneading 50 parts by weight to 50 parts by weight, the fibrous magnesium oxysulfate in the composition has an average fiber length of 3 to 6 μm and an average aspect ratio of 5 to 15. A method for producing a fiber-reinforced polypropylene composition, which comprises melt-kneading until
ルフェ−トが、平均直径０．５〜５ｍｍ、見掛け比重
０．１３〜０．２５の粒状に造粒されていることを特徴
とする請求項１又は請求項２に記載の、繊維強化ポリプ
ロピレン組成物の製造法。3. The fibrous magnesium oxysulfate to be melt-kneaded is granulated into particles having an average diameter of 0.5 to 5 mm and an apparent specific gravity of 0.13 to 0.25. The method for producing a fiber-reinforced polypropylene composition according to claim 1 or claim 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6548195A JPH08259750A (en) | 1995-03-24 | 1995-03-24 | Production of fiber-reinforced polypropylene composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6548195A JPH08259750A (en) | 1995-03-24 | 1995-03-24 | Production of fiber-reinforced polypropylene composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08259750A true JPH08259750A (en) | 1996-10-08 |
Family
ID=13288341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6548195A Pending JPH08259750A (en) | 1995-03-24 | 1995-03-24 | Production of fiber-reinforced polypropylene composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08259750A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005325345A (en) * | 2004-04-15 | 2005-11-24 | Showa Denko Kk | Composite material composition and its manufacturing method |
| JP2005325346A (en) * | 2004-04-15 | 2005-11-24 | Showa Denko Kk | Sliding material composition and its manufacturing method |
| JP2007092050A (en) * | 2005-08-31 | 2007-04-12 | Sumitomo Chemical Co Ltd | Propylene resin composition, its manufacturing method and injection-molded item |
| JP2008208303A (en) * | 2007-02-28 | 2008-09-11 | Sumitomo Chemical Co Ltd | Propylenic resin composition, its production method and injection molded article |
| US7655721B2 (en) | 2004-08-19 | 2010-02-02 | Sumitomo Chemical Company, Limited | Method for producing a propylene-based resin composition, a propylene-based resin composition, and an injection molded article |
| CN114736456A (en) * | 2022-03-24 | 2022-07-12 | 金发科技股份有限公司 | Polypropylene composition and preparation method and application thereof |
-
1995
- 1995-03-24 JP JP6548195A patent/JPH08259750A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005325345A (en) * | 2004-04-15 | 2005-11-24 | Showa Denko Kk | Composite material composition and its manufacturing method |
| JP2005325346A (en) * | 2004-04-15 | 2005-11-24 | Showa Denko Kk | Sliding material composition and its manufacturing method |
| US7655721B2 (en) | 2004-08-19 | 2010-02-02 | Sumitomo Chemical Company, Limited | Method for producing a propylene-based resin composition, a propylene-based resin composition, and an injection molded article |
| JP2007092050A (en) * | 2005-08-31 | 2007-04-12 | Sumitomo Chemical Co Ltd | Propylene resin composition, its manufacturing method and injection-molded item |
| JP2008208303A (en) * | 2007-02-28 | 2008-09-11 | Sumitomo Chemical Co Ltd | Propylenic resin composition, its production method and injection molded article |
| CN114736456A (en) * | 2022-03-24 | 2022-07-12 | 金发科技股份有限公司 | Polypropylene composition and preparation method and application thereof |
| CN114736456B (en) * | 2022-03-24 | 2023-09-26 | 金发科技股份有限公司 | Polypropylene composition and preparation method and application thereof |
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