JPWO2015002217A1 - Rear grip for motorcycles comprising a propylene-based polymer composition - Google Patents
Rear grip for motorcycles comprising a propylene-based polymer composition Download PDFInfo
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- JPWO2015002217A1 JPWO2015002217A1 JP2015525249A JP2015525249A JPWO2015002217A1 JP WO2015002217 A1 JPWO2015002217 A1 JP WO2015002217A1 JP 2015525249 A JP2015525249 A JP 2015525249A JP 2015525249 A JP2015525249 A JP 2015525249A JP WO2015002217 A1 JPWO2015002217 A1 JP WO2015002217A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J7/00—Luggage carriers
- B62J7/02—Luggage carriers characterised by the arrangement thereof on cycles
- B62J7/04—Luggage carriers characterised by the arrangement thereof on cycles arranged above or behind the rear wheel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K19/00—Cycle frames
- B62K19/02—Cycle frames characterised by material or cross-section of frame members
- B62K19/16—Cycle frames characterised by material or cross-section of frame members the material being wholly or mainly of plastics
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/06—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
Abstract
本発明の課題は、ガラス繊維入りのプロピレン系重合体組成物からなる表面外観に優れた自動二輪車用リアグリップを提供することにあり、本発明は、ＭＦＲが１〜２０ｇ／１０分の範囲にあるプロピレン系重合体（Ａ）５２〜７４．５重量部、ガラス繊維（Ｂ）２５〜４５重量部、及び変性プロピレン系重合体（Ｃ）０．５〜３重量部（但し、（Ａ）、（Ｂ）及び（Ｃ）の合計を１００重量部とする。）を含むプロピレン系重合体組成物からなり、表面露出箇所の厚さが４ｍｍ以上２０ｍｍ未満の範囲にした自動二輪車用リアグリップに係る。The subject of this invention is providing the rear grip for motorcycles which was excellent in the surface appearance which consists of a propylene-type polymer composition containing glass fiber, and this invention is MFR in the range of 1-20 g / 10min. Propylene polymer (A) 52-74.5 parts by weight, glass fiber (B) 25-45 parts by weight, and modified propylene polymer (C) 0.5-3 parts by weight (however, (A), (B) and (C) are 100 parts by weight.) And a rear grip for motorcycles in which the thickness of the surface exposed portion is in the range of 4 mm to less than 20 mm. .
Description
本発明は、ガラス繊維入りのプロピレン系重合体組成物からなる自動二輪車用リアグリップに関する。 The present invention relates to a motorcycle rear grip made of a propylene-based polymer composition containing glass fibers.
繊維強化樹脂成形体は、軽量で高剛性であるので、電気機器を始め、自動車、住宅設備、医療器具など多様の分野で活用されている。繊維強化樹脂成形体としては、強化繊維にガラスファイバを、樹脂に熱可塑性樹脂であるポリアミド、或いはポリプロピレンを用いて成形した繊維強化樹脂成形体等が知られている。このような繊維強化樹脂成形体は、自動二輪車分野において、エンジンルーム内のファンシュラウド等に適用されている。 Since the fiber reinforced resin molding is lightweight and highly rigid, it is used in various fields such as electric equipment, automobiles, housing facilities, and medical instruments. As a fiber reinforced resin molded article, a fiber reinforced resin molded article formed by using glass fiber as a reinforcing fiber and polyamide or polypropylene as a thermoplastic resin as a resin is known. Such a fiber reinforced resin molded body is applied to a fan shroud or the like in an engine room in the motorcycle field.
一方、自動二輪車用リアグリップは、製品の要求する機械的性能、及び意匠性から、ガラス繊維強化ポリアミド樹脂が使用されている。ガラス繊維強化ポリアミド樹脂は、吸水前後によって物性が変化すること、部品軽量化による燃費向上、及び経済性等の観点から、ポリアミド樹脂に比べて、吸水性が少ないガラス繊維強化ポリプロピレン樹脂を用いた製品化が求められている。 On the other hand, a glass fiber reinforced polyamide resin is used for a rear grip for a motorcycle because of the mechanical performance required by the product and the design. Glass fiber reinforced polyamide resin is a product that uses glass fiber reinforced polypropylene resin, which has less water absorption than polyamide resin, from the viewpoints of changes in physical properties before and after water absorption, improved fuel economy due to weight reduction of parts, and economy. Is required.
しかしながら、単に、ガラス繊維等を複合化した繊維強化ポリプロピレン樹脂組成物を用いて成形した場合、得られる成形体の表面は強化繊維の浮き等により表面の凹凸が発生するため、自動二輪車用リアグリップのような意匠性が求められる製品には使用されていない。 However, when molding is simply performed using a fiber reinforced polypropylene resin composition in which glass fibers or the like are compounded, the surface of the resulting molded product may have surface irregularities due to floating of the reinforcing fibers, etc. It is not used in products that require such design.
成形体の外観を改良する方法としては、例えば、特許文献１にはシンジオタクチック構造を有するポリプロピレン樹脂を添加することが提案されている。しかしながら、このようなポリプロピレン樹脂を添加しても、表面外観の改良効果はわずかであり、逆に機械強度の低下が発生する。
As a method for improving the appearance of the molded body, for example,
また、特許文献２、３には、特殊な成形方法で繊維強化ポリプロピレン樹脂成形体の外観を改良することが提案されている。これらの成形方法を採用すれば、繊維強化ポリプロピレン樹脂成形体の表面外観は改良されるが、繊維含有量が３０％を超えると、外観改良効果は十分とは言えない。また製造設備が煩雑になり高コストのため、ポリプロピレン樹脂の経済性の優位性が損なわれてしまう可能性がある。
本発明の課題は、ガラス繊維入りのプロピレン系重合体組成物からなる表面外観に優れた自動二輪車用リアグリップを提供することである。 An object of the present invention is to provide a rear grip for a motorcycle having an excellent surface appearance made of a propylene-based polymer composition containing glass fibers.
本発明は、ＭＦＲが１〜２０ｇ／１０分の範囲にあるプロピレン系重合体（Ａ）５２〜７４．５重量部、ガラス繊維（Ｂ）２５〜４５重量部、及び変性プロピレン系重合体（Ｃ）０．５〜３重量部（但し、（Ａ）、（Ｂ）及び（Ｃ）の合計を１００重量部とする。）を含むプロピレン系重合体組成物からなり、表面露出箇所の厚さが４ｍｍ以上２０ｍｍ未満の範囲にあることを特徴とする自動二輪車用リアグリップに係る。 The present invention relates to a propylene polymer (A) 52 to 74.5 parts by weight, a glass fiber (B) 25 to 45 parts by weight, and a modified propylene polymer (C) having an MFR in the range of 1 to 20 g / 10 minutes. ) 0.5 to 3 parts by weight (provided that the total of (A), (B) and (C) is 100 parts by weight). The present invention relates to a motorcycle rear grip characterized by being in a range of 4 mm or more and less than 20 mm.
本発明の自動二輪車用リアグリップは、表面露出箇所の表面の表面粗さが小さく、高強度で外観が良好である。 The motorcycle rear grip of the present invention has a small surface roughness at the exposed surface, high strength and good appearance.
《プロピレン系重合体（Ａ）》
本発明の自動二輪車用リアグリップを形成するプロピレン系重合体組成物の成分の一つであるプロピレン系重合体（Ａ）は、一般にポリプロピレンの名称で製造・販売されているプロピレンを主体とした重合体で、通常、密度が０．８９０〜０．９３０ｇ／ｃｍ3、ＭＦＲ（ＡＳＴＭ Ｄ１２３８ 荷重２１６０ｇ、温度２３０℃）が１〜２０ｇ／１０分、好ましくは２〜１０ｇ／１０分、更に好ましくは５〜１０ｇ／１０分のプロピレンの単独重合体若しくはプロピレンと他の少量例えば、５モル％以下のα−オレフィン、例えばエチレン、１−ブテン、１−ペンテン、１−ヘキセン、１−オクテン、４−メチル−１−ペンテン等とのランダム共重合体、あるいは、プロピレン単独重合体と少量のα‐オレフィンを含むプロピレン・α‐オレフィンランダム共重合体との組成物であるブロック共重合体である。これらプロピレン系重合体の中でも、プロピレンの単独重合体が得られる自動二輪車用リアグリップの耐熱性、剛性が優れるので好ましい。<< Propylene polymer (A) >>
The propylene polymer (A), which is one of the components of the propylene polymer composition forming the rear grip for a motorcycle of the present invention, is a heavy polymer composed mainly of propylene, which is generally manufactured and sold under the name of polypropylene. In general, the density is 0.890 to 0.930 g / cm 3 , MFR (ASTM D1238 load 2160 g, temperature 230 ° C.) is 1 to 20 g / 10 minutes, preferably 2 to 10 g / 10 minutes, more preferably 5 10 g / 10 min of propylene homopolymer or other small amounts of propylene and other small amounts, for example 5 mol% or less of α-olefins such as ethylene, 1-butene, 1-pentene, 1-hexene, 1-octene, 4-methyl Random copolymer with -1-pentene or the like, or propylene / α-olefin containing propylene homopolymer and a small amount of α-olefin A block copolymer is a composition of the emissions random copolymer. Among these propylene polymers, a motorcycle rear grip from which a propylene homopolymer is obtained is preferable because of excellent heat resistance and rigidity.
《ガラス繊維（Ｂ）》
本発明の自動二輪車用リアグリップを形成するプロピレン系重合体組成物の成分の一つであるガラス繊維（Ｂ）は、熱可塑性樹脂の補強用として、製造・販売されているガラス繊維であり、その種類は特に制限がないが、ロービングガラス、チョップドストランドガラス、ミルドガラスなどを用いることができる。また、これらは１種類でも、２種類以上を混合して用いてもよい。<< Glass fiber (B) >>
Glass fiber (B), which is one of the components of the propylene polymer composition forming the rear grip for a motorcycle of the present invention, is a glass fiber that is manufactured and sold for reinforcing a thermoplastic resin, Although there is no restriction | limiting in particular, the roving glass, chopped strand glass, milled glass, etc. can be used. These may be used alone or in combination of two or more.
本発明に係るガラス繊維（Ｂ）の長さは、押出機などでプロピレン系重合体と混合する際に折れることもあり、特に限定はないが、作業性の観点から０．３ｍｍ〜１０ｍｍ、望ましくは２ｍｍ〜７ｍｍが好ましい。本発明に係るプロピレン系重合体組成物中のガラス繊維（Ｂ）の長さは、２ｍｍ〜５ｍｍである。ガラス繊維（Ｂ）の太さも特に限定ないが、平均繊維径が１〜２５μｍ、好ましくは５〜１７μｍである。また、さらにアスペクト比（平均繊維長／繊維直径）については、２５以下のものが好ましいが、異なるアスペクト比のガラス繊維を適当な比率で混合して用いることも可能である。ガラス繊維の断面形状についても特に限定はなく、円形、まゆ型、ひょうたん型、楕円形、円筒形、四角形などの多角形を用いることができる。 The length of the glass fiber (B) according to the present invention may be broken when mixed with the propylene polymer by an extruder or the like, and is not particularly limited, but is preferably 0.3 mm to 10 mm from the viewpoint of workability. Is preferably 2 mm to 7 mm. The length of the glass fiber (B) in the propylene polymer composition according to the present invention is 2 mm to 5 mm. The thickness of the glass fiber (B) is not particularly limited, but the average fiber diameter is 1 to 25 μm, preferably 5 to 17 μm. Further, the aspect ratio (average fiber length / fiber diameter) is preferably 25 or less, but glass fibers having different aspect ratios can be mixed and used at an appropriate ratio. The cross-sectional shape of the glass fiber is not particularly limited, and a polygon such as a circle, eyebrows, gourds, an ellipse, a cylinder, or a rectangle can be used.
本発明に係るガラス繊維（Ｂ）は、シランカップリング剤、チタネートカップリング剤、アルミネートカップリング剤等で表面処理されていてもよい。ここでいうシランカップリング剤としては、例えばビニルトリクロルシラン、ビニルトリエトキシシラン、ビニルトリメトキシシラン、γ−メタクリロキシプロピルトリメトキシシラン、β−（３,４−エポキシシクロヘキシル）エチルトリメトキシシラン、γ−グリシドキシプロピルトリメトキシシラン、Ｎ−β（アミノエチル）γ−アミノプロピルトリメトキシシラン、γ−アミノプロピルトリエトキシシラン、Ｎ−フェニル−γ−アミノプロピルトリメトキシシラン、γ−メルカプトプロピルトリメトキシシランおよびγ−クロロプロピルトリメトキシシランなどが挙げられる。 The glass fiber (B) according to the present invention may be surface-treated with a silane coupling agent, a titanate coupling agent, an aluminate coupling agent, or the like. Examples of the silane coupling agent herein include vinyltrichlorosilane, vinyltriethoxysilane, vinyltrimethoxysilane, γ-methacryloxypropyltrimethoxysilane, β- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, γ -Glycidoxypropyltrimethoxysilane, N-β (aminoethyl) γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, N-phenyl-γ-aminopropyltrimethoxysilane, γ-mercaptopropyltrimethoxy Examples include silane and γ-chloropropyltrimethoxysilane.
本発明に係るガラス繊維（Ｂ）は、オレフィン系樹脂、スチレン系樹脂、アクリル系樹脂、ポリエステル系樹脂、エポキシ系樹脂、ウレタン系樹脂等で集束処理されていてもよい。この場合、集束処理に用いられるオレフィン系樹脂やウレタン系樹脂は、組成物全体の物性に影響のない範囲で用いられる。 The glass fiber (B) according to the present invention may be converged with an olefin resin, a styrene resin, an acrylic resin, a polyester resin, an epoxy resin, a urethane resin, or the like. In this case, the olefin resin or urethane resin used for the bundling treatment is used in a range that does not affect the physical properties of the entire composition.
さらに、本発明に係るガラス繊維（Ｂ）は、メッキ法および蒸着法などにより、ニッケル、銅、コバルト、銀、アルミニウム、鉄などおよびこれらの合金などの金属でコーティングされていてもよい。 Furthermore, the glass fiber (B) according to the present invention may be coated with a metal such as nickel, copper, cobalt, silver, aluminum, iron, or an alloy thereof by a plating method or a vapor deposition method.
《変性プロピレン系重合体（Ｃ）》
本発明の自動二輪車用リアグリップを形成するプロピレン系重合体組成物の成分の一つである変性プロピレン系重合体（Ｃ）は、不飽和カルボン酸もしくはその誘導体でグラフト変性された重合体であり、１３５℃デカリン中で測定される固有粘度［η］が、通常０．２〜２．０ｄｌ／ｇ、より好ましくは０．４〜１．０ｄｌ／ｇの範囲にある。<< Modified Propylene Polymer (C) >>
The modified propylene polymer (C), which is one of the components of the propylene polymer composition forming the rear grip for a motorcycle of the present invention, is a polymer graft-modified with an unsaturated carboxylic acid or a derivative thereof. The intrinsic viscosity [η] measured in decalin at 135 ° C. is usually in the range of 0.2 to 2.0 dl / g, more preferably 0.4 to 1.0 dl / g.
本発明に係る変性プロピレン系重合体（Ｃ）における不飽和カルボン酸もしくはその誘導体のグラフト量は、通常、０.０１〜１０重量％、好ましくは０.０２〜５重量％の範囲にある。グラフト量が低すぎると、接着力が十分でない虞があり、高すぎると架橋反応が起こりやすくなり得られる変性プロピレン系重合体の品質が安定し難くなる。 The graft amount of the unsaturated carboxylic acid or derivative thereof in the modified propylene polymer (C) according to the present invention is usually in the range of 0.01 to 10% by weight, preferably 0.02 to 5% by weight. If the graft amount is too low, the adhesive strength may not be sufficient, and if it is too high, the crosslinking reaction tends to occur and the quality of the modified propylene polymer that can be obtained becomes difficult to stabilize.
本発明に係る不飽和カルボン酸もしくはその誘導体としては、例えば、アクリル酸、マレイン酸、フマール酸、テトラヒドロフタル酸、イタコン酸、シトラコン酸、クロトン酸、イソクロトン酸、ナジック酸（エンドシス−ビシクロ［２.２.１］ヘプト−５−エン−ジカルボン酸）等の不飽和カルボン酸；またはその誘導体、例えば酸ハライド、アミド、イミド、無水物、エステル等が挙げられる。かかる誘導体の具体例としては、例えば塩化マレイル、マレイミド、無水マレイン酸、無水シトラコン酸、マレイン酸モノメチル、マレイン酸ジメチル、グリシジルマレエート等が挙げられる。これらの中では、不飽和ジカルボン酸またはその酸無水物が好適であり、特にマレイン酸、ナジック酸またはこれらの酸無水物が好ましく用いられる。 Examples of the unsaturated carboxylic acid or derivative thereof according to the present invention include acrylic acid, maleic acid, fumaric acid, tetrahydrophthalic acid, itaconic acid, citraconic acid, crotonic acid, isocrotonic acid, nadic acid (endocis-bicyclo [2. 2.1] unsaturated carboxylic acids such as hept-5-ene-dicarboxylic acid); or derivatives thereof such as acid halides, amides, imides, anhydrides, esters and the like. Specific examples of such derivatives include maleyl chloride, maleimide, maleic anhydride, citraconic anhydride, monomethyl maleate, dimethyl maleate, glycidyl maleate and the like. Of these, unsaturated dicarboxylic acids or acid anhydrides thereof are suitable, and maleic acid, nadic acid or acid anhydrides thereof are particularly preferably used.
本発明に係る変性プロピレン系重合体（Ｃ）は、種々公知の方法、例えば、プロピレン系重合体を有機溶媒に溶解し、次いで得られた溶液に不飽和カルボン酸またはその誘導体及び必要に応じて有機過酸化物などのラジカル開始剤を加え、通常、６０〜３５０℃、好ましくは８０〜１９０℃の温度で、０．５〜１５時間、好ましくは１〜１０時間反応させる方法、あるいは、押出機などを使用して、無溶媒で、プロピレン系重合体と、不飽和カルボン酸もしくはその誘導体及び必要に応じて有機過酸化物などのラジカル開始剤を加え、通常、プロピレン系重合体の融点以上、好ましくは１８０〜３５０℃、０．５〜１０分間反応させる方法を採り得る。 The modified propylene polymer (C) according to the present invention is prepared by various known methods, for example, by dissolving the propylene polymer in an organic solvent, and then adding the unsaturated carboxylic acid or its derivative and, if necessary, the resulting solution. A method of adding a radical initiator such as an organic peroxide and reacting at a temperature of 60 to 350 ° C., preferably 80 to 190 ° C. for 0.5 to 15 hours, preferably 1 to 10 hours, or an extruder Using a solvent-free propylene-based polymer, an unsaturated carboxylic acid or a derivative thereof and, if necessary, a radical initiator such as an organic peroxide, usually above the melting point of the propylene-based polymer, Preferably, a method of reacting at 180 to 350 ° C. for 0.5 to 10 minutes can be employed.
本発明に係る変性プロピレン系重合体（Ｃ）の元となるプロピレン系重合体は、前記プロピレン系重合体（Ａ）と同じ範疇のプロピレン系重合体を使用し得るが、１３５℃デカリン中で測定される固有粘度［η］は、通常０．２〜２．０ｄｌ／ｇ、より好ましくは０．４〜１．０ｄｌ／ｇの範囲にある。 The propylene polymer used as the base of the modified propylene polymer (C) according to the present invention may be a propylene polymer in the same category as the propylene polymer (A), but measured in decalin at 135 ° C. The intrinsic viscosity [η] is usually in the range of 0.2 to 2.0 dl / g, more preferably 0.4 to 1.0 dl / g.
《エチレン・α−オレフィンランダム共重合体（Ｄ）》
本発明の自動二輪車用リアグリップを形成するプロピレン系重合体組成物の成分の一つであるエチレン・α−オレフィンランダム共重合体（Ｄ）は、エチレンと炭素数３以上、好ましくは４〜１０のα−オレフィンとのランダム共重合体で、好ましくは、密度が８６５〜９１０ｋｇ／ｍ3、更に好ましくは８７５〜９００ｋｇ／ｍ3、好ましくはエチレン含有量が７０〜９５モル％、更に好ましくは８０〜９３モル％、好ましくはＸ線による結晶化度が５〜４０％、更に好ましくは７〜３０％、好ましくはＧＰＣで測定した分子量分布（Ｍｗ／Ｍｎ）が３以下、更に好ましくは２．５以下であり、好ましくはＤＳＣによる昇温速度１０℃／分での吸熱曲線から求めた融点が４０〜１００℃、更に好ましくは６０〜９０℃であり、ＭＦＲ（ＡＳＴＭ Ｄ１２３８ 荷重２１６０ｇ、温度１９０℃）が好ましくは０．０１〜２０ｇ／１０分、更には０．１〜５ｇ／１０分の範囲にある。<< Ethylene / α-Olefin Random Copolymer (D) >>
The ethylene / α-olefin random copolymer (D), which is one of the components of the propylene-based polymer composition forming the rear grip for a motorcycle of the present invention, is ethylene and has 3 or more carbon atoms, preferably 4 to 10 carbon atoms. A random copolymer of α-olefin, preferably having a density of 865 to 910 kg / m 3 , more preferably 875 to 900 kg / m 3 , preferably an ethylene content of 70 to 95 mol%, more preferably 80 ~ 93 mol%, preferably X-ray crystallinity is 5 to 40%, more preferably 7 to 30%, preferably the molecular weight distribution (Mw / Mn) measured by GPC is 3 or less, more preferably 2.5. The melting point is preferably 40 to 100 ° C., more preferably 60 to 90 ° C., preferably from the endothermic curve at a heating rate of 10 ° C./min by DSC, and MFR (AST M D1238 (load 2160 g, temperature 190 ° C.) is preferably in the range of 0.01 to 20 g / 10 minutes, more preferably 0.1 to 5 g / 10 minutes.
《プロピレン系重合体組成物》
本発明の自動二輪車用リアグリップを形成するプロピレン系重合体組成物は、前記プロピレン系重合体（Ａ）を５２〜７４．５重量部、好ましくは５８〜６９．５重量部、前記ガラス繊維（Ｂ）を２５〜４５重量部、好ましくは３０〜４０重量部、及び前記変性プロピレン系重合体（Ｃ）を０．５〜３重量部、好ましくは０．５〜２重量部（但し、（Ａ）、（Ｂ）及び（Ｃ）の合計を１００重量部とする。）含む組成物である。<< Propylene-based polymer composition >>
The propylene-based polymer composition forming the rear grip for a motorcycle according to the present invention comprises 52 to 74.5 parts by weight of the propylene-based polymer (A), preferably 58 to 69.5 parts by weight, and the glass fiber ( B) is 25 to 45 parts by weight, preferably 30 to 40 parts by weight, and the modified propylene polymer (C) is 0.5 to 3 parts by weight, preferably 0.5 to 2 parts by weight (provided that (A ), (B) and (C) are 100 parts by weight.)
ガラス繊維（Ｂ）の含有量が２５重量部未満の組成物は、得られる成形体の剛性が小さく、製品特性として必要な剛性感が得られない。一方、ガラス繊維（Ｂ）の含有量が４５重量部を超える組成物は、得られる成形体の表面へのガラス繊維の浮き上がりが大きくなり、良好な表面外観が損なわれる。 A composition having a glass fiber (B) content of less than 25 parts by weight has a low rigidity of the resulting molded product, and the product does not have the necessary rigidity. On the other hand, in the composition having a glass fiber (B) content of more than 45 parts by weight, the glass fiber floats on the surface of the resulting molded article, and the good surface appearance is impaired.
変性プロピレン系重合体（Ｃ）の含有量が０．５重量部未満の組成物は、ガラス繊維との接着が不十分となり、所定の機械強度が得られない。一方、変性プロピレン系重合体（Ｃ）の含有量が３重量部を超える組成物は、ポリプロピレン樹脂との相溶性が低下し、機械強度が低下する場合がある。 A composition having a modified propylene polymer (C) content of less than 0.5 parts by weight has insufficient adhesion to glass fibers, and a predetermined mechanical strength cannot be obtained. On the other hand, in a composition in which the content of the modified propylene polymer (C) exceeds 3 parts by weight, the compatibility with the polypropylene resin is lowered, and the mechanical strength may be lowered.
本発明に係るプロピレン系重合体組成物は、前記プロピレン系重合体（Ａ）、前記ガラス繊維（Ｂ）及び前記変性プロピレン系重合体（Ｃ）に加え、前記エチレン・α−オレフィンランダム共重合体（Ｄ）を含むと塗装性に優れる共重合体を得ることができるので好ましい。 The propylene polymer composition according to the present invention includes the ethylene / α-olefin random copolymer in addition to the propylene polymer (A), the glass fiber (B), and the modified propylene polymer (C). When (D) is included, a copolymer excellent in paintability can be obtained, which is preferable.
本発明に係るプロピレン系重合体組成物が、前記エチレン・α−オレフィンランダム共重合体（Ｄ）を含む場合は、通常、（Ａ）、（Ｂ）及び（Ｃ）の合計：１００重量部に対して、１０〜２５重量部、好ましくは１２〜２０重量部含む。 When the propylene polymer composition according to the present invention contains the ethylene / α-olefin random copolymer (D), the total of (A), (B) and (C) is usually 100 parts by weight. On the other hand, it contains 10 to 25 parts by weight, preferably 12 to 20 parts by weight.
本発明に係るプロピレン系重合体組成物には本発明の目的を損なわない範囲で、通常用いられる酸化防止剤、耐候安定剤、帯電防止剤、防曇剤、ブロッキング防止剤、滑剤、核剤、顔料等の添加剤あるいは他の重合体を必要に応じて配合することができる。 In the propylene polymer composition according to the present invention, the antioxidant, weathering stabilizer, antistatic agent, antifogging agent, anti-blocking agent, lubricant, nucleating agent, and the like that are usually used within the range not impairing the object of the present invention. Additives such as pigments or other polymers can be blended as necessary.
本発明に係るプロピレン系重合体組成物は、前記プロピレン系重合体（Ａ）、前記ガラス繊維（Ｂ）及び前記変性プロピレン系重合体（Ｃ）、必要に応じて前記エチレン・α−オレフィンランダム共重合体（Ｄ）を上記範囲でヘンシェルミキサー、Ｖ−ブレンダー、リボンブレンダー、タンブラーミキサー等で混合する方法、混合後、更に単軸押出機、多軸押出機、バンバリーミキサー等で溶融混練する方法等により得られる。 The propylene polymer composition according to the present invention includes the propylene polymer (A), the glass fiber (B), the modified propylene polymer (C), and, if necessary, the ethylene / α-olefin random copolymer. A method of mixing the polymer (D) within the above range with a Henschel mixer, a V-blender, a ribbon blender, a tumbler mixer, etc., a method of mixing and then kneading with a single screw extruder, a multi-screw extruder, a Banbury mixer, etc. Is obtained.
《自動二輪車用リアグリップ》
本発明の自動二輪車用リアグリップは、前記本発明に係るプロピレン系重合体組成物からなる、表面露出箇所の厚さが４ｍｍ以上２０ｍｍ未満、好ましくは５〜１７ｍｍの範囲にある成形体である。《Rear grip for motorcycles》
The rear grip for a motorcycle of the present invention is a molded body made of the propylene-based polymer composition according to the present invention, wherein the surface exposed portion has a thickness of 4 mm or more and less than 20 mm, preferably 5 to 17 mm.
本発明の自動二輪車用リアグリップにおいて、表面露出箇所とは、自動二輪車本体に取り付けられた自動二輪車用リアグリップが、自動車二輪車本体によって隠れずに、人の視界によって確認できる箇所を指す。 In the motorcycle rear grip of the present invention, the surface exposed portion refers to a portion where the motorcycle rear grip attached to the motorcycle main body can be confirmed by the human field of view without being hidden by the motorcycle main body.
本発明の自動二輪車用リアグリップの具体例を図によって説明する。図１に本発明の自動二輪車用リアグリップ１を備えた自動二輪車の外観図を示す。図２は取り付けられた自動二輪車用リアグリップ１の拡大図である。本発明の自動二輪車用リアグリップ１は、図１及び図２に示すように、シート２とリアフェンダー４との間に装着される。図３は、本発明の自動二輪車用リアグリップ１の外観図である。
A specific example of the rear grip for a motorcycle of the present invention will be described with reference to the drawings. FIG. 1 shows an external view of a motorcycle provided with a motorcycle
図１〜３に示すように、本発明の自動二輪車用リアグリップ１の取り付け部（ｄ）は、シート２とリアフェンダー４との間に装着されているので、人の視界によって確認できず、取り付け部（ｄ）を除く、（ａ）、（ｂ）及び（ｃ）部を含む周辺部は、自動車二輪車本体によって隠れずに、人の視界によって確認できる。
As shown in FIGS. 1-3, since the attachment part (d) of the
《自動二輪車用リアグリップの製造方法》
本発明の自動二輪車用リアグリップは自動二輪車用リアグリップ用金型を備えた射出成型機を用いて成形し得る。前記本発明に係るプロピレン系重合体組成物を用いて自動二輪車用リアグリップ用金型内に、射出成形する場合は、前記プロピレン系重合体組成物を溶融、好ましくは１８０〜２５０℃の範囲で溶融して射出される。[Method of manufacturing rear grip for motorcycle]
The motorcycle rear grip of the present invention can be molded using an injection molding machine equipped with a motorcycle rear grip mold. In the case of injection molding into a motorcycle rear grip mold using the propylene-based polymer composition according to the present invention, the propylene-based polymer composition is melted, preferably in the range of 180 to 250 ° C. Melted and injected.
本発明の自動二輪車用リアグリップの製造方法において、自動二輪車用リアグリップ用金型を１１０℃以上〜１５０℃未満の温度範囲に保持しておくと、得られる自動二輪車用リアグリップは、更にガラス繊維の浮き等が抑制された表面外観に優れたものが得られる。
また、１１０℃以上〜１５０℃未満の温度範囲に保持した自動二輪車用リアグリップ用金型に射出成形した後、取り出し可能な温度まで金型を冷却しても構わない。In the method for manufacturing a rear grip for a motorcycle according to the present invention, if the mold for the rear grip for a motorcycle is held in a temperature range of 110 ° C. or higher and lower than 150 ° C., the obtained motorcycle rear grip further includes glass. An excellent surface appearance with suppressed fiber floating and the like can be obtained.
Alternatively, the mold may be cooled to a temperature at which it can be taken out after injection molding into a motorcycle rear grip mold held in a temperature range of 110 ° C. to less than 150 ° C.
以下、実施例に基づいて本発明をさらに具体的に説明するが、本発明はこれらの実施例に限定されるものではない。 EXAMPLES Hereinafter, although this invention is demonstrated further more concretely based on an Example, this invention is not limited to these Examples.
本発明の実施例、比較例等におけるプロピレン系重合体組成物、自動二輪車用リアグリップなどの物性は以下の方法で測定した。
（１）メルトフローレート（ＭＦＲ）
ＭＦＲは、ＩＳＯ １１３３に従って、２３０℃、荷重２．１６ｋｇで測定した。
（２）引張破壊強度（ＴＳ：ＭＰａ）
ＴＳは、ＩＳＯ ５２７に従って測定した。
（３）曲げ弾性率（ＦＭ：ＭＰａ）
ＦＭは、ＩＳＯ １７８に従って測定した。
（４）十点平均表面粗さ（Ｒｚ）
超深度形状測定顕微鏡（株式会社キーエンス社製、商標；ＶＫ−８５００）を用いて、成形体表面を画像処理し、得られた画像にレーザを照射することにより、Ｒｚを測定した。The physical properties of propylene polymer compositions, motorcycle rear grips and the like in Examples and Comparative Examples of the present invention were measured by the following methods.
(1) Melt flow rate (MFR)
MFR was measured according to ISO 1133 at 230 ° C. and a load of 2.16 kg.
(2) Tensile fracture strength (TS: MPa)
TS was measured according to ISO 527.
(3) Flexural modulus (FM: MPa)
FM was measured according to ISO 178.
(4) Ten-point average surface roughness (Rz)
Using an ultra-deep shape measuring microscope (trade name: VK-8500, manufactured by Keyence Corporation), the surface of the molded body was subjected to image processing, and Rz was measured by irradiating the obtained image with a laser.
本発明の実施例、比較例等におけるプロピレン系重合体組成物は、以下の方法で得た。 The propylene polymer compositions in Examples and Comparative Examples of the present invention were obtained by the following method.
〔製造例１〕
プロピレン系重合体（Ａ）として、ＭＦＲが１０ｇ／１０分のプロピレン単独重合体を５８重量部、エチレン・α−オレフィンランダム共重合体（Ｄ）として、密度＝９００ｋｇ／ｍ3、エチレン含量＝８０モル％、及びＭＦＲ＝６．５ｇ／１０分のエチレン・１−ブテンランダム共重合体を１８重量部、変性プロピレン系重合体（Ｃ）として、［η］＝０．８ｄｌ／ｇ、及び無水マレイン酸グラフト量＝０．５重量％の無水マレイン酸変性ポリプロピレンを１重量部、及びフェノール系酸化防止剤（ベンゼンプロパノイックアシッド,３,５−ビス（１，１−ジメチルエチル）−４−ヒドロキシ,２，２−ビス[[３-[３，５−ビス（１，１−ジメチルエチル）−４−ヒドロキシフェニル]−１−オキソプロポキシ]メチル]−１，３−プロパンジルエステル）０．１重量部、イオウ系酸化防止剤（ジステアリルチオジプロピオネート）０．１重量部をタンブラーミキサーで均一に混合した後、２３０℃に設定した同方向二軸混練機（日本製鋼所（株）製 ＴＥＸ−３０α）に重量式フィーダに供給し、ガラス繊維（Ｂ）として、長さ３ｍｍ、径１３μｍのガラス繊維４１重量部を重量式フィーダにて供給し、加熱混合してプロピレン系重合体組成物を得た。得られたプロピレン系重合体組成物のＭＦＲは３ｇ／１０分、ＴＳは７４ＭＰａ、及びＦＭは６５００ＭＰａであった。[Production Example 1]
As propylene-based polymer (A), 58 parts by weight of propylene homopolymer with MFR of 10 g / 10 min, as ethylene / α-olefin random copolymer (D), density = 900 kg / m 3 , ethylene content = 80 18% by weight of ethylene / 1-butene random copolymer of mol% and MFR = 6.5 g / 10 min, modified propylene polymer (C), [η] = 0.8 dl / g, and anhydrous maleic 1 part by weight of maleic anhydride-modified polypropylene having an acid graft amount of 0.5% by weight and a phenolic antioxidant (benzenepropanoic acid, 3,5-bis (1,1-dimethylethyl) -4-hydroxy , 2,2-bis [[3- [3,5-bis (1,1-dimethylethyl) -4-hydroxyphenyl] -1-oxopropoxy] methyl] -1,3-propanezier Tel) 0.1 parts by weight and sulfur-based antioxidant (distearyl thiodipropionate) 0.1 parts by weight were uniformly mixed with a tumbler mixer, and then the same direction twin-screw kneader set at 230 ° C. (Nippon Steel) TEX-30α manufactured by Tokoro Co., Ltd. is supplied to a gravimetric feeder, and 41 parts by weight of glass fiber having a length of 3 mm and a diameter of 13 μm is fed by a gravimetric feeder as glass fiber (B), heated and mixed to produce propylene. A system polymer composition was obtained. The resulting propylene polymer composition had an MFR of 3 g / 10 min, a TS of 74 MPa, and an FM of 6500 MPa.
〔製造例２〕
プロピレン系重合体（Ａ）の量を５２重量部、及びガラス繊維（Ｂ）の量を４７重量部にする以外は製造例１と同様にしてプロピレン系重合体組成物を得た。得られたプロピレン系重合体組成物のＭＦＲは３ｇ／１０分、ＴＳは８０ＭＰａ、及びＦＭは７７００ＭＰａであった。[Production Example 2]
A propylene polymer composition was obtained in the same manner as in Production Example 1 except that the amount of the propylene polymer (A) was 52 parts by weight and the amount of the glass fiber (B) was 47 parts by weight. The resulting propylene polymer composition had an MFR of 3 g / 10 min, a TS of 80 MPa, and an FM of 7700 MPa.
〔参考例１〕
製造例１で得たプロピレン系重合体組成物を射出成形機（東芝機械（株）製 ＥＣ１００）を用いて、加熱温度２４０℃、冷却温度４０℃の条件で射出成形し、厚さ４ｍｍの試験片を成形し、その性状を測定した。結果を表１に示す。[Reference Example 1]
The propylene-based polymer composition obtained in Production Example 1 was injection molded using an injection molding machine (EC100 manufactured by Toshiba Machine Co., Ltd.) at a heating temperature of 240 ° C. and a cooling temperature of 40 ° C., and a thickness of 4 mm was tested. Pieces were molded and their properties were measured. The results are shown in Table 1.
〔比較参考例１〕
厚さ２ｍｍの試験片を成形する以外は、実施例１と同様にして、試験片を得た。結果を表１に示す。[Comparative Reference Example 1]
A test piece was obtained in the same manner as in Example 1 except that a test piece having a thickness of 2 mm was formed. The results are shown in Table 1.
〔比較参考例２〕
厚さ３ｍｍの試験片を成形する以外は、実施例１と同様にして、試験片を得た。結果を表１に示す。[Comparative Reference Example 2]
A test piece was obtained in the same manner as in Example 1 except that a test piece having a thickness of 3 mm was formed. The results are shown in Table 1.
〔比較参考例３〕
製造例２で得たプロピレン系重合体組成物を用いて、実施例１と同様にして厚さが４ｍｍの成形しその性状を測定した。結果を表１に示す。
[Comparative Reference Example 3]
Using the propylene-based polymer composition obtained in Production Example 2, a thickness of 4 mm was formed in the same manner as in Example 1, and the properties thereof were measured. The results are shown in Table 1.
〔実施例１〕
製造例１で得たプロピレン系重合体組成物を射出成形機（株式会社名機製作所製 ＮＡＤＥＭ８５００）用いて、加熱温度２２０℃、冷却温度５５℃の条件で射出成形し、図３に示したような形状を示す自動二輪車用リアグリップを成形した。[Example 1]
The propylene-based polymer composition obtained in Production Example 1 was injection molded using an injection molding machine (NADEM8500, manufactured by Meiki Seisakusho Co., Ltd.) at a heating temperature of 220 ° C. and a cooling temperature of 55 ° C., as shown in FIG. A rear grip for motorcycles that shows a unique shape was molded.
製品厚さが５ｍｍである部位（ａ）〔図４〕、製品厚さが１０ｍｍである部位（ｂ）〔図５〕、製品厚さが１５ｍｍである部位（ｃ）〔図６〕、及び製品厚さが２０ｍｍである部位（ｄ）〔図７〕の表面のＲｚを測定した。結果を表２に示す。 Part (a) where product thickness is 5 mm (FIG. 4), part (b) where product thickness is 10 mm (FIG. 5), part (c) where product thickness is 15 mm (FIG. 6), and product The surface Rz of the part (d) [FIG. 7] having a thickness of 20 mm was measured. The results are shown in Table 2.
表２から明らかなように、（ａ）、（ｂ）及び（ｃ）部を含む製品厚さが５〜１５ｍｍの範囲にある自動二輪車用リアグリップの表面露出箇所の表面粗さ（Ｒｚ）は２６〜２９μｍであり、表面が滑らかであるが、厚さが２０ｍｍの座席に取り付けられて表面が露出されない自動二輪車用リアグリップの取り付け部（ｄ）の表面粗さ（Ｒｚ）は５８μｍであり、表面が粗かった。 As is apparent from Table 2, the surface roughness (Rz) of the surface exposed portion of the rear grip for motorcycles in which the product thickness including the parts (a), (b) and (c) is in the range of 5 to 15 mm is The surface roughness (Rz) of the mounting portion (d) of the rear grip for a motorcycle, which is 26 to 29 μm and has a smooth surface but is attached to a seat having a thickness of 20 mm and the surface is not exposed, is 58 μm, The surface was rough.
１・・・リアグリップ
２・・・シート
３・・・テールライト
４・・・リアフェンダー
５・・・サイドカバー
６・・・後輪
７・・・クッション
８・・・メインスタンド
９・・・エンジン
１０・・前輪
１１・・フロントフェンダー
１２・・ヘッドライト
１３・・ハンドルDESCRIPTION OF
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| JP2013141461 | 2013-07-05 | ||
| JP2013141461 | 2013-07-05 | ||
| PCT/JP2014/067617 WO2015002217A1 (en) | 2013-07-05 | 2014-07-02 | Motorcycle rear grip composed of propylene polymer composition |
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| JPWO2015002217A1 true JPWO2015002217A1 (en) | 2017-02-23 |
| JP6378678B2 JP6378678B2 (en) | 2018-08-22 |
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| JP7055598B2 (en) * | 2017-05-31 | 2022-04-18 | 株式会社プライムポリマー | Sterilization container |
| EP3875533A4 (en) | 2018-11-02 | 2022-08-10 | Prime Polymer Co., Ltd. | Long fiber-reinforced propylene-based resin composition and long fiber-reinforced molded body |
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| WO2015002217A1 (en) | 2015-01-08 |
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