JPH02238037A - Polypropylene resin composition - Google Patents
Polypropylene resin compositionInfo
- Publication number
- JPH02238037A JPH02238037A JP5793189A JP5793189A JPH02238037A JP H02238037 A JPH02238037 A JP H02238037A JP 5793189 A JP5793189 A JP 5793189A JP 5793189 A JP5793189 A JP 5793189A JP H02238037 A JPH02238037 A JP H02238037A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- component
- polypropylene
- resin composition
- styrene
- 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.)
- Granted
Links
- -1 Polypropylene Polymers 0.000 title claims abstract description 35
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 34
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 34
- 239000011342 resin composition Substances 0.000 title claims abstract description 18
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229920005989 resin Polymers 0.000 claims abstract description 25
- 239000011347 resin Substances 0.000 claims abstract description 25
- 239000012765 fibrous filler Substances 0.000 claims abstract description 17
- 239000000835 fiber Substances 0.000 claims abstract description 15
- 239000002245 particle Substances 0.000 claims description 16
- 238000002156 mixing Methods 0.000 abstract description 10
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 abstract description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 abstract description 3
- 239000008187 granular material Substances 0.000 abstract 2
- 239000002904 solvent Substances 0.000 abstract 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 12
- 239000011777 magnesium Substances 0.000 description 12
- 229910052749 magnesium Inorganic materials 0.000 description 12
- CENHPXAQKISCGD-UHFFFAOYSA-N trioxathietane 4,4-dioxide Chemical compound O=S1(=O)OOO1 CENHPXAQKISCGD-UHFFFAOYSA-N 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 230000007423 decrease Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 5
- 239000011256 inorganic filler Substances 0.000 description 5
- 229910003475 inorganic filler Inorganic materials 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 239000000454 talc Substances 0.000 description 4
- 229910052623 talc Inorganic materials 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 description 3
- WWUVJRULCWHUSA-UHFFFAOYSA-N 2-methyl-1-pentene Chemical compound CCCC(C)=C WWUVJRULCWHUSA-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- 229920001890 Novodur Polymers 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 229920006397 acrylic thermoplastic Polymers 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- GBAOBIBJACZTNA-UHFFFAOYSA-L calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 description 1
- 235000010261 calcium sulphite Nutrition 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000000635 electron micrograph Methods 0.000 description 1
- CGPRUXZTHGTMKW-UHFFFAOYSA-N ethene;ethyl prop-2-enoate Chemical compound C=C.CCOC(=O)C=C CGPRUXZTHGTMKW-UHFFFAOYSA-N 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 229920005669 high impact polystyrene Polymers 0.000 description 1
- 239000004797 high-impact polystyrene Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
［ａ業上の利用分野］
本発明は各種産業、特に自動車分野において有用な繊維
状充填材配合ポリプロピレン樹脂組成物に関し、詳しく
は、衝撃強度を十分保持しつつ、剛性および表面硬度の
改良されたポリプロピレン樹脂組成物に関する．
［従来の技術及び発明が解決しようとする課題］従来、
エラストマーを配合したポリプロピレン樹脂組成物は自
動車用材料として幅広く使用されている。しかしながら
、同じ用途で用いられるＡＢＳと比較して特に剛性や表
面硬度が不十分であるという欠点がある。このような問
題点を解決する方法として種々の工夫が行なわれている
が、未だ要求を満たすポリプロピレン樹脂組成物は見当
たらない．例えば、タルクなどの板状充填材を配合する
ことにより剛性の向上が図られるものの、表面硬度の改
良は十分でなく、しかもその成形品の表面にフローマー
クが発生したり、ウエルド外観が損なわれたりしている
。また、ガラス繊維を配合することにより剛性を著しく
向上させることはできるものの、衝撃強度の低下や表面
外観が悪くなる等の問題があった。Detailed Description of the Invention [Field of Application in Industry A] The present invention relates to a polypropylene resin composition containing a fibrous filler useful in various industries, particularly in the automobile field. and a polypropylene resin composition with improved surface hardness. [Prior art and problems to be solved by the invention] Conventionally,
Polypropylene resin compositions blended with elastomers are widely used as automotive materials. However, it has the drawback of being particularly insufficient in rigidity and surface hardness compared to ABS used for the same purpose. Although various efforts have been made to solve these problems, no polypropylene resin composition has yet been found that meets the requirements. For example, although rigidity can be improved by incorporating plate-shaped fillers such as talc, the improvement in surface hardness is not sufficient, and furthermore, flow marks may occur on the surface of the molded product or the weld appearance may be impaired. I'm doing it. Furthermore, although rigidity can be significantly improved by incorporating glass fibers, there are problems such as a decrease in impact strength and poor surface appearance.
［Ｘｉ！題を解決するための手段コ
本発明者らは、このような従来技術の問題を解決すべく
鋭意研究を進めた結果、特定の性状を有する繊維状充填
材をポリプロピレンに配合し、これにスチレン系樹脂を
相溶化剤とともに添加してそのモルフォロジーを制御す
ることにより、衝撃強度を十分保持し、剛性および表面
硬度が改良されたポリプロピレン樹脂組成物が得られる
ことを見い出し、ここに本発明を完成した。[Xi! Means for Solving the Problem The inventors of the present invention have carried out intensive research in order to solve the problems of the prior art, and as a result, the present inventors have blended a fibrous filler with specific properties into polypropylene, and added styrene to the polypropylene. It was discovered that a polypropylene resin composition that sufficiently maintains impact strength and has improved rigidity and surface hardness can be obtained by adding a system resin together with a compatibilizer and controlling its morphology, and the present invention has now been completed. did.
すなわち本発明は、（Ａ）ポリプロピレン４０〜９０重
量％，（Ｂ）スチレン系樹脂５〜４０重量％，（Ｃ）相
溶化剤５〜３０重量％および（Ｄ）前記（Ａ）成分．（
Ｂ）成分および（Ｃ）成分の合計量１００重量部に対し
て平均繊維径が０．１〜２μのであると共にアスペクト
比が２０〜６０である繊維状充填材３〜３５重量部を配
合してなるボリプロビレン樹脂組成物であって、連続相
が（＾）ポリプロピレンであり、その中に（Ｂ）スチレ
ン系樹脂が粒子径５μｍ以下に分散しており、さらにそ
のスチレン系樹脂の粒子表面に厚さ０．０１〜１．０ａ
ｍの（Ｃ）相溶化剤が存在していることを特徴とするポ
リプロピレン樹脂組成物を提供するものである。That is, the present invention comprises (A) 40 to 90% by weight of polypropylene, (B) 5 to 40% by weight of styrene resin, (C) 5 to 30% by weight of compatibilizer, and (D) component (A). (
3 to 35 parts by weight of a fibrous filler having an average fiber diameter of 0.1 to 2μ and an aspect ratio of 20 to 60 is blended with respect to 100 parts by weight of the total amount of component B) and component (C). A polypropylene resin composition in which the continuous phase is (^) polypropylene, (B) styrene resin is dispersed therein to have a particle size of 5 μm or less, and the particle surface of the styrene resin has a thickness of 5 μm or less. 0.01~1.0a
The present invention provides a polypropylene resin composition characterized in that (C) a compatibilizing agent is present.
本発明で用いる（Ａ）ポリプロピレンとしては、プロビ
レンモノマーを主成分として重合した結晶性のボリマー
であれば特に制限はなく、エチレン．ブテン，２−メチ
ルペンテン−１のようなコモノマーを含んでいてもかま
わない。また、用いるポリプロピレン樹脂のメルトイン
デックスは５〜６０ｇ／ｉｏ分のものが好ましい。メル
トインデックスが５以下であると、成形性が悪くなり、
６０以上であると、衝撃強度が低下しがちになり好まし
くない。The polypropylene (A) used in the present invention is not particularly limited as long as it is a crystalline polymer polymerized with propylene monomer as the main component, and ethylene. It may also contain comonomers such as butene and 2-methylpentene-1. Moreover, the melt index of the polypropylene resin used is preferably 5 to 60 g/io. If the melt index is less than 5, the moldability will be poor,
If it is 60 or more, the impact strength tends to decrease, which is not preferable.
次に、本発明で分散相として用いる（Ｂ）スチレン系樹
脂としては、スチレンモノマーを単独重合、もしくは共
重合させた樹脂であればよく、コモノマーとしてα−メ
チルスチレン．アクリロニトリル．無水マレイン酸，メ
チルメタアクリレート等の共重合しうるモノマー等を含
んでいてもかまわない。また、ポリブタジエン．スチレ
ンーブタジエン共重合ゴム等を配合して強化したハイイ
ンパクトボリスチレンを用いることもできる。Next, the styrene resin (B) used as the dispersed phase in the present invention may be any resin obtained by homopolymerizing or copolymerizing a styrene monomer, and α-methylstyrene can be used as a comonomer. Acrylonitrile. It may contain copolymerizable monomers such as maleic anhydride and methyl methacrylate. Also, polybutadiene. High impact polystyrene reinforced by blending styrene-butadiene copolymer rubber or the like can also be used.
スチレン系樹脂のメルトインデックスは０．５〜２０ｇ
７１０分程度が好適である。The melt index of styrene resin is 0.5-20g
Approximately 710 minutes is suitable.
本発明では、スチレン系樹脂は分散粒子となっており、
その粒子径は５μｍ以下とすることが必要である。粒子
径が５μｍ以上になると、層状剥離を起こし、耐衝撃性
が低下するので好ましくない。In the present invention, the styrene resin is dispersed particles,
It is necessary that the particle size is 5 μm or less. When the particle size is 5 μm or more, delamination occurs and impact resistance decreases, which is not preferable.
さらに、本発明のスチレン系樹脂分散粒子の表面（ポリ
プロピレンとの界面）には厚さ０．０１〜１．０μｍの
相溶化剤が存在し、ポリプロピレン樹脂中にスチレン系
樹脂を均一に分散させ、ポリプロピレン樹脂とスチレン
系樹脂の相溶化を促進させている．このような（Ｃ）相
溶化剤としては、スチレンープタジエン共重合体，スチ
レンーイソブレン共重合体等のスチレン系熱可塑性エラ
ストマーやアクリル系熱可塑性エラストマー，エチレン
／エチルアクリレート／無水マレイン酸共重合体等を用
いることができ、これをスチレン系樹脂分散粒子表面に
厚さ０．０１Ｎ１．０μｍとなるように存在させればよ
い。ここで厚さが０．０１μｍ以下であると、耐衝撃性
が低下し好ましくなく、１．０μｍ以上であると、剛性
の低下が著しく好ましくない。なお、相溶化剤の厚さは
スチレン系樹脂の配合量とその粒子径の大きさによって
調整することができる。Furthermore, a compatibilizer with a thickness of 0.01 to 1.0 μm is present on the surface of the styrene resin dispersed particles of the present invention (interface with polypropylene), and the styrene resin is uniformly dispersed in the polypropylene resin. It promotes compatibility between polypropylene resin and styrene resin. Examples of the compatibilizing agent (C) include styrene thermoplastic elastomers such as styrene-butadiene copolymer, styrene-isobrene copolymer, acrylic thermoplastic elastomer, ethylene/ethyl acrylate/maleic anhydride copolymer, etc. A polymer or the like can be used, and it is sufficient if it is present on the surface of the styrenic resin-dispersed particles to a thickness of 0.01N1.0 μm. If the thickness is less than 0.01 μm, the impact resistance will be undesirably lowered, and if it is 1.0 μm or more, the rigidity will be significantly lowered, which is undesirable. In addition, the thickness of the compatibilizer can be adjusted by the amount of styrene resin and its particle size.
さらに、本発明においては、（Ｄ）成分として繊維状充
填材を用いる．ここで、この繊維状充填材の平均繊維径
は０．１〜２μｍであり、０．５〜１μｍのものが好ま
しい．この平均繊維径が０．１μｍに満たないと、剛性
が不足しがちであり、２μｍを超えると外観が不良とな
り、衝撃強度が低下しがちとなる。また、この繊維状充
填材のアスペクト比は２０〜６０であり、３０〜５０が
好ましい。アスペクト比が２０に満たないと、剛性不足
となりがちであり、一方、６０を超えると、外観不良と
なりがちである。このような条件を満たす繊維状充填材
であればどのようなものでもよく、例えば繊維状マグネ
シウムオキシサルフェート．チタン酸カリウム繊維．ケ
イ酸カルシウム繊維．炭化珪素繊維．石膏繊維，炭素繊
維などを挙げることができる．これらのなかでも繊維状
マグネシウムオキシサルフェート．チタン酸カリウム繊
維を用いた場合、剛性向上効果が大きく、かつ組成物の
外観が良好となるので好ましい。Furthermore, in the present invention, a fibrous filler is used as component (D). Here, the average fiber diameter of this fibrous filler is 0.1 to 2 μm, preferably 0.5 to 1 μm. If the average fiber diameter is less than 0.1 μm, rigidity tends to be insufficient, and if it exceeds 2 μm, the appearance becomes poor and impact strength tends to decrease. Moreover, the aspect ratio of this fibrous filler is 20-60, preferably 30-50. If the aspect ratio is less than 20, rigidity tends to be insufficient, while if it exceeds 60, the appearance tends to be poor. Any fibrous filler that satisfies these conditions may be used, such as fibrous magnesium oxysulfate. Potassium titanate fiber. Calcium silicate fiber. Silicon carbide fiber. Examples include gypsum fiber and carbon fiber. Among these, fibrous magnesium oxysulfate. It is preferable to use potassium titanate fibers because the effect of improving rigidity is large and the appearance of the composition is good.
本発明のポリプロピレン樹脂組成物は上記（Ａ）〜（Ｄ
）成分からなるものであり、連続相が（Ａ）ポリプロピ
レンであり、分散相が（Ｂ）スチレン系樹脂であり、こ
の分敗相である（Ｂ）スチレン系樹脂の粒子表面に（Ｃ
）相溶化剤が存在した構造のものである。The polypropylene resin composition of the present invention includes the above (A) to (D).
) components, the continuous phase is (A) polypropylene, the dispersed phase is (B) styrenic resin, and the particle surface of (B) styrene resin, which is the separated phase, is (C).
) has a structure in which a compatibilizer is present.
上記（Ａ）〜（Ｄ）成分の配合割合は、まず（Ａ）〜（
Ｃ）成分について述べると（Ａ）ポリプロピレン４０〜
９０重量％、好ましくは５０〜８５重量％．（Ｂ）スチ
レン系樹脂５〜４０重量％、好ましくは１０〜３０重量
％，（Ｃ）相溶化剤５〜３０重量％、好ましくはｌＯ〜
２０重量％である。The blending ratio of the above components (A) to (D) is first determined by (A) to (D).
Regarding C) component, (A) polypropylene 40~
90% by weight, preferably 50-85% by weight. (B) Styrenic resin 5-40% by weight, preferably 10-30% by weight, (C) Compatibilizer 5-30% by weight, preferably lO~
It is 20% by weight.
そして上記（Ａ）成分．（Ｂ）成分および（Ｃ）成分の
合計量１００重量部に対して（Ｄ）繊維状充填材が３〜
３５重量部、好ましくは５〜２５重量部配合される。And the above component (A). The amount of fibrous filler (D) is 3 to 3 parts by weight based on 100 parts by weight of the total amount of component (B) and component (C).
It is blended in an amount of 35 parts by weight, preferably 5 to 25 parts by weight.
この場合ＣＢ）スチレン系樹脂の配合割合が５重量％未
満であると表面硬度が不十分となり、また、４０重量％
を超えると耐熱性が低下する。また（Ｃ）相溶化剤の配
合割合が５重量％未満であるとスチレン系樹脂が分散粒
子状とならず層状となることがあり、寸法安定性や耐衝
撃性が悪くなる。In this case, if the blending ratio of CB) styrene resin is less than 5% by weight, the surface hardness will be insufficient;
If it exceeds this, heat resistance will decrease. Furthermore, if the blending ratio of the compatibilizer (C) is less than 5% by weight, the styrene resin may not be in the form of dispersed particles but may be in the form of a layer, resulting in poor dimensional stability and impact resistance.
一方、（Ｃ）成分の配合割合が３０重量％を超えると剛
性，耐熱性が悪くなり好ましくない。さらに上記（Ｄ）
繊維状充填材の配合量が３重量部未満であると剛性．耐
熱性に劣り、３５重量部を超えると耐衝撃性，外観など
が低下し好ましくない。On the other hand, if the blending ratio of component (C) exceeds 30% by weight, the rigidity and heat resistance will deteriorate, which is not preferable. Furthermore, the above (D)
If the amount of the fibrous filler is less than 3 parts by weight, the stiffness will decrease. Heat resistance is poor, and if it exceeds 35 parts by weight, impact resistance, appearance, etc. will deteriorate, which is not preferable.
本発明のポリプロピレン樹脂組成物は、上記各成分を所
定量配合し、バンバリーミキサー，単軸スクリュー押出
機．二軸スクリュー押出機．コニーダ，多軸スクリュー
押出機等を用いて１８０〜２４０℃の温度で十分に混練
することにより得られる．また、本発明の樹脂組成物か
ら成形品を製造する場合は、射出成形法，押出成形法等
常法により行なえばよい。The polypropylene resin composition of the present invention is produced by blending the above-mentioned components in predetermined amounts and then using a Banbury mixer or a single screw extruder. Twin screw extruder. It is obtained by thorough kneading at a temperature of 180 to 240°C using a co-kneader, multi-screw extruder, etc. Moreover, when manufacturing a molded article from the resin composition of the present invention, a conventional method such as injection molding or extrusion molding may be used.
さらに、本発明では成形品としたときの剛性を大幅に向
上させるために無機質充填剤を添加してもよい。無機質
充填剤としてはタルク．炭酸カルシウム．炭酸マグネシ
ウム．硫酸カルシウム．亜硫酸カルシウム，硫酸マグネ
シウム，カオリン，酸化チタン．酸化亜鉛．アルミナ等
を用いることができ、特にタルク，炭酸カルシウムが好
ましい。添加する無機質充填剤は粒子径３μｍ以下の微
細粒子が好ましい。粒子径が３μｍ以上では、剛性の改
良が不十分であり、耐衝撃性が低下するので好ましくな
い。無機質充填剤の配合量はポリプロピレン樹脂．スチ
レン系樹脂および相溶化剤の合計量１００重量部に対し
て１０〜１００重量部、好ましくは１５〜４０重量部が
適当である。また、無機質充填剤の添加は上記（Ａ）〜
（Ｄ）成分と同時に混練するかまたは上記（Ａ）〜（１
１）成分を混練した後に所定量添加して混練すればよい
。Furthermore, in the present invention, an inorganic filler may be added to significantly improve the rigidity of the molded product. Talc is an inorganic filler. Calcium carbonate. Magnesium carbonate. Calcium sulfate. Calcium sulfite, magnesium sulfate, kaolin, titanium oxide. Zinc oxide. Alumina and the like can be used, with talc and calcium carbonate being particularly preferred. The inorganic filler added is preferably fine particles with a particle size of 3 μm or less. If the particle size is 3 μm or more, the improvement in rigidity will be insufficient and the impact resistance will decrease, which is not preferable. The amount of inorganic filler blended is polypropylene resin. The appropriate amount is 10 to 100 parts by weight, preferably 15 to 40 parts by weight, based on 100 parts by weight of the total amount of the styrene resin and compatibilizing agent. In addition, the addition of inorganic fillers is from (A) above.
(D) Component is kneaded simultaneously or the above (A) to (1)
1) After kneading the ingredients, a predetermined amount may be added and kneading.
［実施例］ 次に、本発明を実施例により説明する。[Example] Next, the present invention will be explained by examples.
実施例１
ポリプロピレン（出光ボリプロＪ−７８５８．出光石油
化学■製． Ｍ Ｉ ＝ １０ｇ７１０分）７６重量％
．ポリスチレン（出光スチロールＨＴ５１，出光石油化
学■製， Ｍ Ｉ ＝ ２ｇ７１０分）１３重量％およ
び相溶化剤としてスチレンーブタジエンースチレンブロ
ック共重合体（ＳＢＳ）（カリフレックスＴＲ１１０２
，シェル化学■製） １１重量％およびこれらの合計量
１００重量部に対し、繊維状充填剤として繊維状マグネ
シウムオキシサルフェート（ｔｉｌ＆維径０．７ μｍ
．アスペクト比４０） １５重量部をドライブレンド後
、二軸混練機を用いて温度２００℃，回転数５００ｒｐ
ｍの条件で混練し、ペレットを得た。その後、射出成形
により各試験片を得、物性試験を行なった。また、この
ベレットの電子顕微鏡写真から分散相粒子径，相溶化剤
の厚みを測定した。結果を第１表に示す．
実施例２
実施例１において、ポリプロピレンの配合量を６２重量
％に変え、かつポリスチレンの配合量を２７重量％に変
えたこと以外は実施例１と同様の操作を行なった。結果
を第１表に示す。Example 1 Polypropylene (Idemitsu Bolipro J-7858. Manufactured by Idemitsu Petrochemical Co., Ltd. M I = 10 g 710 minutes) 76% by weight
．． 13% by weight of polystyrene (Idemitsu Styrene HT51, manufactured by Idemitsu Petrochemical Co., Ltd., M I = 2 g 710 minutes) and styrene-butadiene-styrene block copolymer (SBS) (Califlex TR1102) as a compatibilizer.
, manufactured by Shell Kagaku ■) and 100 parts by weight of these in total, fibrous magnesium oxysulfate (til & fiber diameter 0.7 μm) was added as a fibrous filler.
．． Aspect ratio 40) After dry blending 15 parts by weight, a twin-screw kneader was used at a temperature of 200°C and a rotation speed of 500 rpm.
The mixture was kneaded under the conditions of m to obtain pellets. Thereafter, each test piece was obtained by injection molding, and a physical property test was conducted. Further, the particle size of the dispersed phase and the thickness of the compatibilizer were measured from an electron micrograph of this pellet. The results are shown in Table 1. Example 2 The same operation as in Example 1 was carried out except that the amount of polypropylene was changed to 62% by weight and the amount of polystyrene was changed to 27% by weight. The results are shown in Table 1.
実施例３
実施例１において、ポリプロピレンの使用量を８１重量
％．ボリスチレンの使用量を１４重量％およびＳＢＳの
使用量を５重量％にし、また繊維状マグネシウムオキシ
サルフェートの使用量を１０重量部としたこと以外は実
施例１と同様に行なった．結果を第１表に示す。Example 3 In Example 1, the amount of polypropylene used was 81% by weight. The same procedure as in Example 1 was conducted except that the amount of boristyrene used was 14% by weight, the amount of SBS was 5% by weight, and the amount of fibrous magnesium oxysulfate was 10 parts by weight. The results are shown in Table 1.
実施例４
実施例１において、繊維状充填剤として繊維径１．３μ
ｍ，アスペクト比４０の繊維状マグネシウムオキシサル
フエートを使用したこと以外は実施例１と同様に行なっ
た。結果を第１表に示す。Example 4 In Example 1, the fiber diameter was 1.3μ as the fibrous filler.
Example 1 was carried out in the same manner as in Example 1, except that fibrous magnesium oxysulfate having an aspect ratio of 40 was used. The results are shown in Table 1.
実施例５
実施例１において、繊維状充填剤として繊維径１．３μ
ｍ，アスペクト比５５の繊維状マグネシウムオキシサル
フェートを使用したこと以外は実施例１と同様に行なっ
た。結果を第１表に示す。Example 5 In Example 1, the fiber diameter was 1.3μ as the fibrous filler.
The same procedure as in Example 1 was carried out except that fibrous magnesium oxysulfate having an aspect ratio of 55 and an aspect ratio of 55 was used. The results are shown in Table 1.
実施例６
実施例１において、繊維状マグネシウムオキシサルフェ
ートの使用量を５重量部としたこと以外は実施例１と同
様に行なった。結果を第１表に示す．
比較例１
実施例１において、ポリプロピレン８０重量％，エチレ
ンープロピレンゴム（日本合成ゴム■製ＥＰ０２Ｐ）
２０重量部を配合し、ドライブレンド後、実施例１と同
様に行なった。結果を第１表に示す。Example 6 The same procedure as in Example 1 was conducted except that the amount of fibrous magnesium oxysulfate used was 5 parts by weight. The results are shown in Table 1. Comparative Example 1 In Example 1, 80% by weight of polypropylene, ethylene-propylene rubber (EP02P manufactured by Japan Synthetic Rubber ■)
After blending 20 parts by weight and dry blending, the same procedure as in Example 1 was carried out. The results are shown in Table 1.
比較例２
実施例１において、繊維状充填剤として繊維径３μｍ．
アスペクト比４０の繊維状マグネシウムオキシサルフェ
ートを使用したこと以外は実施例１と同様に行なった．
結果を第１表に示す。Comparative Example 2 In Example 1, a fiber diameter of 3 μm was used as the fibrous filler.
The same procedure as in Example 1 was conducted except that fibrous magnesium oxysulfate having an aspect ratio of 40 was used.
The results are shown in Table 1.
比較例３
実施例１において、繊維状充填剤として繊維径０．７μ
ｍ，アスペクト比１０の繊維状マグネシウムオキシサル
フェートを使用したこと以外は実施例１と同様に行なっ
た．結果を第１表に示す。Comparative Example 3 In Example 1, the fiber diameter was 0.7μ as the fibrous filler.
The same procedure as in Example 1 was conducted except that fibrous magnesium oxysulfate having an aspect ratio of 10 was used. The results are shown in Table 1.
比較例４
実施例１において、繊維状マグネシウムオキシサルフエ
ートを用いなかったこと以外は実施例１と同様に行なっ
た。結果を第１表に示す。Comparative Example 4 The same procedure as in Example 1 was conducted except that fibrous magnesium oxysulfate was not used. The results are shown in Table 1.
比較例５
実施例１において、繊維状マグネシウムオキシサルフエ
ートの使用量を４０重量部にしたこと以外は実施例１と
同様に行なった．結果を第１表に示す。Comparative Example 5 The same procedure as in Example 1 was conducted except that the amount of fibrous magnesium oxysulfate used was 40 parts by weight. The results are shown in Table 1.
比較例６
実施例１において、繊維状マグネシウムオキシサルフェ
ートを使用するかわりにタルク（平均粒径１，０μｍ）
を１５重量部用いたこと以外は実施例１と同様に行なっ
た。結果を第１表に示す．第１表
中 成形品表面にフローマークが発生
◆１：アイゾッドａｊ撃強度 ＪＩＳ Ｋ７１１０ノツ
チ付に準拠Ｉ２：曲げ弾性率 ＡＳＴＭ Ｄ７９０に準
拠◆３：ロックウェル硬度 ＡＳＴＭ ７５８ に
準拠［発明の効果］
本発明のポリプロピレン樹脂組成物によれば、エラスト
マーを配合したポリプロピレン樹脂組成物の衝撃強度を
十分保持しつつ、剛性および表面強度を向上させること
ができる。Comparative Example 6 In Example 1, instead of using fibrous magnesium oxysulfate, talc (average particle size 1.0 μm) was used.
The same procedure as in Example 1 was carried out except that 15 parts by weight of was used. The results are shown in Table 1. In Table 1 Flow marks occur on the surface of the molded product◆1: Izod aj impact strength in accordance with JIS K7110 notched I2: Flexural modulus in accordance with ASTM D790◆3: Rockwell hardness in accordance with ASTM 758 [Effects of the invention] This book According to the polypropylene resin composition of the invention, the rigidity and surface strength can be improved while sufficiently maintaining the impact strength of the polypropylene resin composition containing an elastomer.
それ故、本発明のポリプロピレン樹脂組成物は各種産業
、特に自動車分野において極めて有用である。Therefore, the polypropylene resin composition of the present invention is extremely useful in various industries, especially in the automobile field.
特許出願人 出光石油化学株式会社Patent applicant: Idemitsu Petrochemical Co., Ltd.
Claims (1)
チレン系樹脂５〜４０重量％、（Ｃ）相溶化剤５〜３０
重量％および（Ｄ）前記（Ａ）成分、（Ｂ）成分および
（Ｃ）成分の合計量１００重量部に対して平均繊維径が
０．１〜２μｍであると共にアスペクト比が２０〜６０
である繊維状充填材３〜３５重量部を配合してなるポリ
プロピレン樹脂組成物であつて、連続相が（Ａ）ポリプ
ロピレンであり、その中に（Ｂ）スチレン系樹脂が粒子
径５μｍ以下に分散しており、さらにそのスチレン系樹
脂の粒子表面に厚さ０．０１〜１．０μｍの（Ｃ）相溶
化剤が存在していることを特徴とするポリプロピレン樹
脂組成物。1, (A) polypropylene 40-90% by weight, (B) styrene resin 5-40% by weight, (C) compatibilizer 5-30%
weight% and (D) the average fiber diameter is 0.1 to 2 μm and the aspect ratio is 20 to 60 with respect to 100 parts by weight of the total amount of component (A), component (B), and component (C).
A polypropylene resin composition containing 3 to 35 parts by weight of a fibrous filler, in which the continuous phase is (A) polypropylene, and (B) styrene resin is dispersed therein to have a particle size of 5 μm or less. A polypropylene resin composition characterized in that (C) a compatibilizer having a thickness of 0.01 to 1.0 μm is present on the particle surface of the styrene resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1057931A JPH0647643B2 (en) | 1989-03-13 | 1989-03-13 | Polypropylene resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1057931A JPH0647643B2 (en) | 1989-03-13 | 1989-03-13 | Polypropylene resin composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02238037A true JPH02238037A (en) | 1990-09-20 |
| JPH0647643B2 JPH0647643B2 (en) | 1994-06-22 |
Family
ID=13069760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1057931A Expired - Fee Related JPH0647643B2 (en) | 1989-03-13 | 1989-03-13 | Polypropylene resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0647643B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05239277A (en) * | 1991-08-14 | 1993-09-17 | Basf Ag | Thermoplastic molding material |
| JP2001302837A (en) * | 2000-04-24 | 2001-10-31 | Jsp Corp | Foamed particle for molding |
| JP2008509267A (en) * | 2004-08-13 | 2008-03-27 | ジュート−ヒェミー アクチェンゲゼルシャフト | Polymer blends composed of incompatible polymers |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58222133A (en) * | 1982-06-21 | 1983-12-23 | Mitsubishi Petrochem Co Ltd | Propylene polymer composition having improved coatability |
| JPS61185546A (en) * | 1985-02-13 | 1986-08-19 | Showa Denko Kk | Olefin polymer composition |
-
1989
- 1989-03-13 JP JP1057931A patent/JPH0647643B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58222133A (en) * | 1982-06-21 | 1983-12-23 | Mitsubishi Petrochem Co Ltd | Propylene polymer composition having improved coatability |
| JPS61185546A (en) * | 1985-02-13 | 1986-08-19 | Showa Denko Kk | Olefin polymer composition |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05239277A (en) * | 1991-08-14 | 1993-09-17 | Basf Ag | Thermoplastic molding material |
| JP2001302837A (en) * | 2000-04-24 | 2001-10-31 | Jsp Corp | Foamed particle for molding |
| JP2008509267A (en) * | 2004-08-13 | 2008-03-27 | ジュート−ヒェミー アクチェンゲゼルシャフト | Polymer blends composed of incompatible polymers |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0647643B2 (en) | 1994-06-22 |
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