JP2558541B2 - Polypropylene resin composition - Google Patents
Polypropylene resin compositionInfo
- Publication number
- JP2558541B2 JP2558541B2 JP2167500A JP16750090A JP2558541B2 JP 2558541 B2 JP2558541 B2 JP 2558541B2 JP 2167500 A JP2167500 A JP 2167500A JP 16750090 A JP16750090 A JP 16750090A JP 2558541 B2 JP2558541 B2 JP 2558541B2
- Authority
- JP
- Japan
- Prior art keywords
- polypropylene resin
- filler
- inorganic material
- combustion ash
- resin composition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- -1 Polypropylene Polymers 0.000 title claims description 37
- 239000004743 Polypropylene Substances 0.000 title claims description 37
- 229920001155 polypropylene Polymers 0.000 title claims description 37
- 239000011342 resin composition Substances 0.000 title claims description 15
- 229920005989 resin Polymers 0.000 claims description 40
- 239000011347 resin Substances 0.000 claims description 40
- 238000002485 combustion reaction Methods 0.000 claims description 32
- 239000000945 filler Substances 0.000 claims description 32
- 229910010272 inorganic material Inorganic materials 0.000 claims description 24
- 239000011147 inorganic material Substances 0.000 claims description 24
- 239000002245 particle Substances 0.000 claims description 8
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- 239000002956 ash Substances 0.000 description 30
- 238000002156 mixing Methods 0.000 description 12
- 239000000203 mixture Substances 0.000 description 12
- 239000011256 inorganic filler Substances 0.000 description 10
- 229910003475 inorganic filler Inorganic materials 0.000 description 10
- 239000010881 fly ash Substances 0.000 description 7
- 239000003245 coal Substances 0.000 description 5
- 230000000704 physical effect Effects 0.000 description 5
- 230000002195 synergetic effect Effects 0.000 description 5
- 238000004898 kneading Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000454 talc Substances 0.000 description 3
- 229910052623 talc Inorganic materials 0.000 description 3
- 229920005992 thermoplastic resin Polymers 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 229910052570 clay Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- 239000012778 molding material Substances 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000010456 wollastonite Substances 0.000 description 2
- 229910052882 wollastonite Inorganic materials 0.000 description 2
- NGNBDVOYPDDBFK-UHFFFAOYSA-N 2-[2,4-di(pentan-2-yl)phenoxy]acetyl chloride Chemical compound CCCC(C)C1=CC=C(OCC(Cl)=O)C(C(C)CCC)=C1 NGNBDVOYPDDBFK-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012770 industrial material Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 239000010455 vermiculite Substances 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、無機系の充填剤を含有するポリプロピレン
樹脂組成物に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a polypropylene resin composition containing an inorganic filler.
［従来の技術］ 一般にポリプロピレン樹脂は、剛性、寸法安定性、耐
熱性、硬度などを向上させたり、増量により製品コスト
の低減化、廃棄処理の際に易焼却性付与などのために無
機質充填剤を添加して用いることがおこなわれている。
そして無機質充填剤を含むポリプロピレン樹脂の成形品
は、耐熱性や剛性が高まるため工業材料部品として広く
使用されている。これら無機質充填剤としては、炭酸カ
ルシウム、タルク、クレー、マイカ、ワラストナイトな
どが使用されている。[Prior Art] Generally, polypropylene resin is an inorganic filler for improving rigidity, dimensional stability, heat resistance, hardness, etc., reducing the product cost by increasing the amount, and imparting easy incineration at the time of disposal. Is used.
A polypropylene resin molded article containing an inorganic filler has been widely used as an industrial material component because it has improved heat resistance and rigidity. As these inorganic fillers, calcium carbonate, talc, clay, mica, wollastonite, etc. are used.
しかしながら、ポリプロピレン樹脂に無機質充填剤を
添加した場合、上記の改良がおこなわれる反面、耐衝撃
性や伸びの低下を招き、この点が無機質充填剤を添加す
る際の問題点であった。However, when the inorganic filler is added to the polypropylene resin, the above-mentioned improvements are made, but on the other hand, the impact resistance and the elongation are deteriorated, which is a problem when the inorganic filler is added.
この問題点の解消のために種々の改良が提案されてい
る。たとえば、無機質充填剤と樹脂との親和性を高める
ためにアリールアミンなどの不飽和アミンの単独重合体
またはそのアミンの酸塩化物を添加したり（特開昭63−
152665号公報）、衝撃強度の低下を防ぐため樹脂成分に
ゴム成分を添加したり、エチレンなどの軟質成分を共重
合した共重合体を配合する方法（特開昭51−107344号、
特開昭51−47946号、特開昭53−64257号）などが提案さ
れている。その他、経済性の点で充填剤としてJIS A620
1に規定されるように微粉炭燃焼ボイラーで発生するフ
ライアッシュを熱可塑性樹脂に添加する試みがなされて
いる。たとえば、特開昭61−72059号公報には微粉炭燃
焼方式で形成されるフライアッシュを重量比とし最大含
有率70％で熱可塑性樹脂に混合した樹脂組成物の開示が
ある。そしてこの組成物が耐熱性となることを利用して
建材などへの適用が提案されている。Various improvements have been proposed to solve this problem. For example, in order to increase the affinity between the inorganic filler and the resin, a homopolymer of an unsaturated amine such as an arylamine or an acid chloride of the amine is added (Japanese Patent Laid-Open No. 63-
152665), a method of adding a rubber component to the resin component in order to prevent a decrease in impact strength, or blending a copolymer obtained by copolymerizing a soft component such as ethylene (JP-A-51-107344,
JP-A-51-47946 and JP-A-53-64257) have been proposed. In addition, JIS A620 is used as a filler in terms of economy.
As specified in 1, attempts have been made to add fly ash generated in a pulverized coal combustion boiler to a thermoplastic resin. For example, Japanese Patent Application Laid-Open No. 61-72059 discloses a resin composition in which fly ash formed by a pulverized coal combustion method is mixed with a thermoplastic resin at a maximum content rate of 70%. It has been proposed to apply this composition to building materials and the like by taking advantage of the heat resistance of this composition.
［発明が解決しようとする課題］ ところで、熱可塑性樹脂に無機質充填剤を添加する
と、熱変形温度は無添加のものより高くなるが衝撃強度
が低下する。そこで耐衝撃性を高める方法として、上記
の樹脂にゴム成分を混合したり共重合した場合には、樹
脂層が軟質化し硬度が高まらず耐熱性が向上しないとい
う問題がある。また特定の分散剤を加えたり、表面処理
をおこなった充填剤を添加するなどの手段で樹脂と充填
剤との親和性を高める場合には、原料コストが高価であ
るうえにいずれも工数が増大しコストが上昇する。[Problems to be Solved by the Invention] By the way, when an inorganic filler is added to a thermoplastic resin, the heat distortion temperature becomes higher than that without addition, but the impact strength decreases. Therefore, as a method of improving impact resistance, when a rubber component is mixed or copolymerized with the above resin, there is a problem that the resin layer is softened, the hardness is not increased, and the heat resistance is not improved. In addition, when the affinity between the resin and the filler is increased by adding a specific dispersant or a surface-treated filler, the raw material cost is high and the number of steps is increased. However, the cost increases.
また、主として廃棄されているフライアッシュを充填
剤として樹脂に添加するのは経済性の点からは好まし
い。しかし、フライアッシュは1600℃付近の燃焼温度で
形成されるので未燃焼分が少なく球状の灰となる。この
燃焼灰は、焼成されて表面が平滑の小粒径の球状となっ
ているので充填剤として樹脂への混練が容易ではある
が、従来の無機質充填剤と同様で耐衝撃性の改善は認め
られない。Further, it is preferable from the economical point of view to add fly ash, which is mainly discarded, as a filler to the resin. However, since fly ash is formed at a combustion temperature of around 1600 ° C, it has little unburned content and becomes spherical ash. This combustion ash is easy to knead into a resin as a filler because it has a spherical surface with a smooth and small particle size when it is fired, but it has the same impact resistance improvement as conventional inorganic fillers. I can't.
本発明は上記の事情に鑑みてなされたもので、従来の
無機質充填剤の場合と異なり、耐衝撃性などの物性の低
下を抑制した充填剤を含むポリプロピレン樹脂組成物を
提供することを目的とする。The present invention has been made in view of the above circumstances, and, unlike the case of a conventional inorganic filler, an object thereof is to provide a polypropylene resin composition containing a filler that suppresses deterioration of physical properties such as impact resistance. To do.
［課題を解決するための手段］ 本発明のポリプロピレン樹脂組成物は、ポリプロピレ
ン系樹脂と、充填剤とからなるポリプロピレン樹脂組成
物であって、該充填剤は重量平均粒径が１〜20μｍ、比
表面積が10×103cm2/g以上の燃焼灰と薄片状無機質材料
（ただしマイカを除く）とよりなり、該薄片状無機材料
と該燃焼灰との重量比が75/25以下であることを特徴と
する。[Means for Solving the Problems] The polypropylene resin composition of the present invention is a polypropylene resin composition comprising a polypropylene resin and a filler, wherein the filler has a weight average particle diameter of 1 to 20 μm and a ratio of Composed of combustion ash having a surface area of 10 × 10 3 cm 2 / g or more and flaky inorganic material (excluding mica), and the weight ratio of the flaky inorganic material to the combustion ash is 75/25 or less. Is characterized by.
本発明の特徴は、ポリプロピレン系樹脂に配合される
充填剤に薄片状無機質材料と燃焼灰の混合物を用い、そ
の組成割合を特定することによりポリプロピレン樹脂成
形品の耐衝撃性を向上させることにある。A feature of the present invention is to improve the impact resistance of a polypropylene resin molded product by using a mixture of flaky inorganic material and combustion ash as a filler to be blended with a polypropylene resin and specifying the composition ratio thereof. .
燃焼灰と薄片状無機質材料との特定組成割合の混合物
と、それと同量の前記の燃焼灰または薄片状無機質材料
をそれぞれ単独に配合した場合のポリプロピレン樹脂組
成物の衝撃強度を比較すると、混合物の場合が著しく向
上している。その理由は充分解明されていないが、樹脂
中に分散された薄片状無機質材料と燃焼灰とが相乗効果
を示すことによるものと考えられる。A mixture of a combustion ash and a flaky inorganic material in a specific composition ratio, and comparing the impact strength of the polypropylene resin composition when the same amount of the combustion ash or the flaky inorganic material is individually blended, The case has improved significantly. The reason for this is not fully understood, but it is considered that the flaky inorganic material dispersed in the resin and the combustion ash exhibit a synergistic effect.
この薄片状無機材料は充填剤混合物中で75重量％以下
の範囲で用いられる。薄片状無機材料が混合物中で75重
量％を超えると相乗効果による成形品の衝撃強度の向上
が認められなくなり好ましくない。The flaky inorganic material is used in the filler mixture in a range of 75% by weight or less. When the flaky inorganic material exceeds 75% by weight in the mixture, the impact strength of the molded product is not improved due to the synergistic effect, which is not preferable.
薄片状無機材料としては、タルク、クレー、ワラスト
ナイト、バーミキュライトなどの薄片状の形状を有する
ものが利用できる。さらにこの薄片状無機材料の形状
は、アスペクト比が５以上のものであることがより好ま
しい。As the flaky inorganic material, flaky shaped materials such as talc, clay, wollastonite, vermiculite and the like can be used. Further, the shape of the flaky inorganic material preferably has an aspect ratio of 5 or more.
この薄片状無機材料は、樹脂に配合されて通常剛性な
どを向上させるが、衝撃強度は燃焼灰に比較して特に向
上させるものではない。しかし燃焼灰と混合することに
より燃焼灰のみを配合した場合より衝撃強度が高まる。This flaky inorganic material is usually mixed with a resin to improve the rigidity and the like, but the impact strength is not particularly improved as compared with combustion ash. However, by mixing with combustion ash, the impact strength is higher than when only combustion ash is mixed.
この燃焼灰は、重量平均粒径が１〜20μｍの範囲のも
のが用いられる。平均粒径が１μｍ未満であると樹脂に
添加されても物性の向上が得られず好ましくない。また
平均粒径が20μｍを超えると樹脂中での分散性が悪くな
り物性を低下させることとなり好ましくない。This combustion ash has a weight average particle size in the range of 1 to 20 μm. If the average particle size is less than 1 μm, the physical properties cannot be improved even if it is added to the resin, which is not preferable. On the other hand, if the average particle size exceeds 20 μm, the dispersibility in the resin deteriorates and the physical properties deteriorate, which is not preferable.
燃焼灰は比表面積が10×103cm2/g以上のものが利用で
きる。比表面積が10×103cm2/g未満であると、燃焼灰が
好ましいポーラス構造をもたず成形品の物性低下が抑制
できず好ましくない。Combustion ash with a specific surface area of 10 × 10 3 cm 2 / g or more can be used. If the specific surface area is less than 10 × 10 3 cm 2 / g, the combustion ash does not have a preferable porous structure and the physical properties of the molded article cannot be suppressed, which is not preferable.
充填剤の量はポリプロピレン系樹脂に対して50重量％
以下の範囲であることがポリプロピレン樹脂組成物の物
性を保持するために好ましい。50% by weight of filler based on polypropylene resin
The following range is preferred for maintaining the physical properties of the polypropylene resin composition.
ポリプロピレン系樹脂としては、通常用いられている
ホモポリマー、コポリマー、ブロックポリマーなどのポ
リプロピレン樹脂が利用できる。またエチレン成分含有
量が30％以下のエチレンプロピレン共重合体も利用でき
る。As the polypropylene resin, a polypropylene resin such as a homopolymer, a copolymer or a block polymer which is usually used can be used. Further, an ethylene-propylene copolymer having an ethylene component content of 30% or less can also be used.
この充填剤がポリプロピレン系樹脂に配合された成形
体中では、燃焼灰のポーラス構造の表面で樹脂と絡みあ
い密着した接触面を形成する。一方、薄片状無機材料
は、樹脂の剛性を高めることで燃焼灰と相乗効果を発揮
して衝撃強度を高めているものと推測される。In the molded body in which the filler is mixed with the polypropylene resin, the surface of the porous structure of the combustion ash is entangled with the resin to form a contact surface in close contact with the resin. On the other hand, it is presumed that the flaky inorganic material exerts a synergistic effect with the combustion ash by increasing the rigidity of the resin to enhance the impact strength.
この充填剤をポリプロピレン樹脂に配合するには、Ｖ
型混合機、Ｗ型混合機、円筒型混合機やへンシェルミキ
サーなどの混合機で所定時間混合し、さらに混合後押出
し機などの混練機で混練するか、樹脂を押出し機で混練
しながら押出し機にベントより充填剤などを供給して混
練する方法が適用できる。この時可塑剤、安定剤、滑
剤、着色剤その他の添加剤を同時に添加することもでき
る。To add this filler to polypropylene resin, use V
Type mixer, W type mixer, cylindrical type mixer, hen shell mixer, etc. for a predetermined time, and after further mixing, kneading with an extruder or other kneading machine, or while kneading the resin with an extruder. A method of supplying a filler or the like to the extruder through a vent and kneading can be applied. At this time, a plasticizer, a stabilizer, a lubricant, a coloring agent and other additives can be added at the same time.
この燃焼灰は、少なくとも石炭を10重量％含む可燃物
を800℃付近の温度で燃焼させた際に発生するものであ
る。可燃物としては、たとえば廃棄物などであるが、石
炭単体であってもよい。この可燃物は、たとえば、流動
床ボイラーで800℃付近で燃焼されるので、未燃焼分が
多く存在し燃焼温度が低いため灰分が焼成されることが
少なく形状が一定とならず、異形形状でポーラス構造を
もちその粒径が比較的大きな燃焼灰を形成する。This combustion ash is generated when a combustible material containing at least 10% by weight of coal is burned at a temperature near 800 ° C. The combustible material is, for example, waste, but may be coal alone. Since this combustible material is burned at around 800 ° C in a fluidized bed boiler, for example, there is a large amount of unburned content and the combustion temperature is low, so the ash content is less likely to be fired, and the shape does not become uniform. It forms combustion ash with a porous structure and a relatively large particle size.
この燃焼灰の成分としては、酸化珪素とアルミナを主
成分とし少量の酸化鉄、酸化チタン、アルカリ金属およ
びアルカリ土類金属の酸化物などが含まれている。この
酸化珪素とアルミナは、硬度の高いセラミックス質であ
り樹脂に配合されて樹脂の硬度を高め耐熱性を向上させ
ることができる。The components of this combustion ash include silicon oxide and alumina as main components and a small amount of iron oxide, titanium oxide, oxides of alkali metals and alkaline earth metals, and the like. The silicon oxide and the alumina are ceramics having high hardness and can be mixed with the resin to increase the hardness of the resin and improve the heat resistance.
［作用］ 本発明のポリプロピレン樹脂組成物は、ポリプロピレ
ン系樹脂に充填剤として特定の燃焼灰と薄片状無機材料
が特定の割合で配合されている。この充填剤を特定の割
合で混合したものを用いることにより充填剤が相乗効果
を発揮し、その理由は解明されていないが、それぞれを
単独に配合した場合よりもポリプロピレン樹脂組成物の
耐衝撃性が向上する。[Function] In the polypropylene resin composition of the present invention, a specific combustion ash and a flaky inorganic material as a filler are blended in a specific ratio in the polypropylene resin. The filler exerts a synergistic effect by using a mixture of these fillers in a specific ratio, and the reason for this has not been clarified, but the impact resistance of the polypropylene resin composition is higher than that in the case of blending each alone. Is improved.
［実施例］ 以下、実施例により具体的に説明する。[Examples] Hereinafter, specific examples will be described.
ポリプロピレン樹脂は住友化学工業（株）製 AW−56
4を、薄片状無機材料にはタルク（林化成（株）製 JR
−２）を、燃焼灰は流動床ボイラーによる石炭と廃棄物
とを800℃付近の温度で燃焼した際に発生したものを用
いた。この燃焼灰は平均粒径が１〜20μｍで比表面積が
10×103cm2/g以上でポーラス構造を有している。Polypropylene resin is AW-56 manufactured by Sumitomo Chemical Co., Ltd.
4 for flaky inorganic material (JR manufactured by Hayashi Kasei Co., Ltd.
-2), the combustion ash used was generated when coal and waste were burned at a temperature around 800 ° C by a fluidized bed boiler. This combustion ash has an average particle size of 1 to 20 μm and a specific surface area.
It has a porous structure at 10 × 10 3 cm 2 / g or more.
ポリプロピレン樹脂、燃焼灰、薄片状無機材料を第１
表に示す割合で円筒型混合機を用いて混合し、30φの２
軸押出し機にて混練して成形材料を形成した。この成形
材料を用いてアイゾット試験用の試験片を射出成形によ
り作製した。なお、この試験片の厚みは1/8インチでノ
ッチ無しである。Firstly polypropylene resin, combustion ash, and flaky inorganic materials
Mix using a cylindrical mixer at the ratio shown in the table, and
The mixture was kneaded with a shaft extruder to form a molding material. Using this molding material, a test piece for Izod test was produced by injection molding. The thickness of this test piece was 1/8 inch and had no notch.
この試験片を用いてASTM D−256基づきアイゾット衝
撃試験機により衝撃強度を測定した。結果を第１表に示
す。Using this test piece, the impact strength was measured by an Izod impact tester based on ASTM D-256. The results are shown in Table 1.
実施例No.1〜４はポリプロピレン樹脂を60重量％と
し、充填剤の混合割合を変えたものである。No.5はポリ
プロピレン樹脂を80重量％とし、充填剤の混合割合を50
/50、No.6はポリプロピレン樹脂を70重量％とし、充填
剤の混合割合を50/50とした場合である。In Examples Nos. 1 to 4, the polypropylene resin was set to 60% by weight and the mixing ratio of the filler was changed. No. 5 uses polypropylene resin as 80% by weight and the mixing ratio of filler is 50%.
/ 50, No. 6 is the case where the polypropylene resin is 70% by weight and the mixing ratio of the filler is 50/50.
比較例のNo.1〜３はポリプロピレン樹脂に薄片状無機
材料のタルクのみを配合した場合で、その配合量を変化
させた場合である。比較例のNo.4〜８はポリプロピレン
樹脂に燃焼灰のみを配合した場合でその配合量を変化さ
せた場合である。Comparative Examples Nos. 1 to 3 are cases in which only the flaky inorganic material talc was mixed with the polypropylene resin, and the mixing amount was changed. Nos. 4 to 8 of Comparative Examples are cases in which only combustion ash was mixed with polypropylene resin and the mixing amount was changed.
ポリプロピレン樹脂への充填剤の配合量が同じ 場合について実施例と比較例とを比較すると、実施例の
混合充填剤を用いた場合の方が衝撃強度は高くなってい
る。Same amount of filler in polypropylene resin When the example and the comparative example are compared with each other, the impact strength is higher when the mixed filler of the example is used.
比較として実施例と同じ配合割合で燃焼灰の変りにフ
ライアッシュを用いた混合充填剤を含むポリプロピレン
樹脂組成物の衝撃強度を調べた。結果を第１図のグラフ
の破線に示す。また、実施例の結果を第１図の実線で示
す。For comparison, the impact strength of the polypropylene resin composition containing the mixed filler containing fly ash instead of the combustion ash at the same blending ratio as in the example was examined. The results are shown by the broken line in the graph of FIG. The results of the examples are shown by the solid line in FIG.
充填剤の総量が20重量％で薄片状無機材料とフライア
ッシュとの重量比が50/50の場合を、これに相当する実
施例No.5と比較すると衝撃強度が約20kgcm/cm実施例で
は高くなっている。また充填剤の総量が40重量％で薄片
状無機材料とフライアッシュの重量比を実施例のNo.1〜
４に相当する量にした場合は破線上の強度を示す。一
方、実施例では実線で示すように衝撃強度が著しく向上
している。When the total amount of the filler is 20% by weight and the weight ratio of the flaky inorganic material and the fly ash is 50/50, the impact strength is about 20 kgcm / cm as compared with Example No. 5 corresponding to this. It's getting higher. Further, the total amount of the filler is 40% by weight, and the weight ratio of the flaky inorganic material and the fly ash is set to No. 1 to
When the amount is set to 4, the intensity on the broken line is shown. On the other hand, in the example, the impact strength is remarkably improved as shown by the solid line.
したがって、この混合充填剤によりポリプロピレン樹
脂組成物の衝撃強度が高まる。Therefore, the impact strength of the polypropylene resin composition is increased by this mixed filler.
［効果］ 本発明のポリプロピレン樹脂組成物は、充填剤に特定
の燃焼灰と薄片状無機材料が特定の割合で配合されてい
る。この充填剤は、両者をそれぞれ単独に用いた場合よ
りも成形品の耐衝撃性が向上している。したがって、理
由は解明されていないが薄片状無機材料と燃焼灰との両
者が相乗効果を示し衝撃強度が向上したものと推測され
る。本発明の薄片状無機材料と燃焼灰との特定の割合で
混合した充填剤をポリプロピレン樹脂に配合すること
で、従来の薄片状無機材料および燃焼灰をそれぞれ配合
した場合より衝撃強度を高めたポリプロピレン樹脂成形
品をえることができる。[Effect] In the polypropylene resin composition of the present invention, a specific combustion ash and a flaky inorganic material are mixed in a filler in a specific ratio. With this filler, the impact resistance of the molded product is improved as compared with the case where both are used alone. Therefore, although the reason has not been clarified, it is presumed that both the flaky inorganic material and the combustion ash have a synergistic effect to improve the impact strength. By blending a filler mixed with the flaky inorganic material of the present invention and combustion ash in a specific ratio in a polypropylene resin, polypropylene having higher impact strength than in the case of blending the conventional flaky inorganic material and combustion ash, respectively. A resin molded product can be obtained.
第１図は混合充填剤の組成比と衝撃強度との関係を示す
グラフである。FIG. 1 is a graph showing the relationship between the composition ratio of the mixed filler and the impact strength.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 池田 和郎 愛知県豊田市下市場町３丁目30番地 小 島プレス工業株式会社内 (72)発明者 鈴木 隆領 愛知県豊田市下市場町３丁目30番地 小 島プレス工業株式会社内 (72)発明者 鈴木 俊一 愛知県西加茂郡三好町大字莇生字下永井 田１番地の１ 株式会社サンライト内 (56)参考文献 特開 平４−55449（ＪＰ，Ａ) 特開 昭58−145745（ＪＰ，Ａ) 特公 昭48−29848（ＪＰ，Ｂ１) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuro Ikeda 3-30 Shimoichiba-cho, Toyota-shi, Aichi Kojima Press Kogyo Co., Ltd. (72) Takaryu Suzuki 3-chome Shimomarket-cho, Toyota-shi, Aichi Address Kojima Press Kogyo Co., Ltd. (72) Inventor Shunichi Suzuki 1 Miyoshi-cho, Nishikamo-gun, Aichi Large-sized syllabary Shimonagaita 1 1 Sunlight Co., Ltd. (56) Reference JP-A-4-55449 (JP, A) JP-A-58-145745 (JP, A) JP-B-48-29848 (JP, B1)
Claims (1)
るポリプロピレン樹脂組成物であって、該充填剤は重量
平均粒径が１〜20μｍ、比表面積が10×103cm2/g以上の
燃焼灰と薄片状無機質材料（ただしマイカを除く）とよ
りなり、該薄片状無機質材料と該燃焼灰との重量比が75
/25以下であることを特徴とする耐衝撃性に優れたポリ
プロピレン樹脂組成物。1. A polypropylene resin composition comprising a polypropylene resin and a filler, wherein the filler has a weight average particle diameter of 1 to 20 μm and a specific surface area of 10 × 10 3 cm 2 / g or more. Ash and flaky inorganic material (excluding mica), and the flaky inorganic material and the combustion ash have a weight ratio of 75.
A polypropylene resin composition having excellent impact resistance, which is / 25 or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2167500A JP2558541B2 (en) | 1990-06-26 | 1990-06-26 | Polypropylene resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2167500A JP2558541B2 (en) | 1990-06-26 | 1990-06-26 | Polypropylene resin composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0455450A JPH0455450A (en) | 1992-02-24 |
| JP2558541B2 true JP2558541B2 (en) | 1996-11-27 |
Family
ID=15850838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2167500A Expired - Fee Related JP2558541B2 (en) | 1990-06-26 | 1990-06-26 | Polypropylene resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2558541B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2558540B2 (en) * | 1990-06-26 | 1996-11-27 | トヨタ自動車株式会社 | Polypropylene resin composition |
| DE29606526U1 (en) * | 1996-04-10 | 1996-08-14 | Trw Repa Gmbh | Belt height adjuster for a vehicle seat belt system |
| KR100471040B1 (en) * | 2002-02-07 | 2005-03-08 | 현대자동차주식회사 | Height-adjuster of seat-belt for automobile |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5115543B2 (en) * | 1971-08-21 | 1976-05-18 | ||
| JPS58145745A (en) * | 1982-02-24 | 1983-08-30 | Showa Denko Kk | Production of polyolefin resin molding |
| JP2558540B2 (en) * | 1990-06-26 | 1996-11-27 | トヨタ自動車株式会社 | Polypropylene resin composition |
-
1990
- 1990-06-26 JP JP2167500A patent/JP2558541B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0455450A (en) | 1992-02-24 |
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