JP5465385B2 - 多層筒状成形体 - Google Patents
多層筒状成形体 Download PDFInfo
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- JP5465385B2 JP5465385B2 JP2008020810A JP2008020810A JP5465385B2 JP 5465385 B2 JP5465385 B2 JP 5465385B2 JP 2008020810 A JP2008020810 A JP 2008020810A JP 2008020810 A JP2008020810 A JP 2008020810A JP 5465385 B2 JP5465385 B2 JP 5465385B2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/12—Rigid pipes of plastics with or without reinforcement
- F16L9/133—Rigid pipes of plastics with or without reinforcement the walls consisting of two layers
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Description
本発明のポリアリーレンサルファイド樹脂は、繰り返し単位として、−(Ar−S)−(Arはアリーレン基)を主として構成されたものである。本発明では一般的に知られている分子構造のPAS樹脂を使用することができる。
本発明においてオレフィン系エラストマーとは、エラストマー性を有するオレフィン系単位を主体とする重合体又は共重合体であれば特に限定されないが、例えば、エチレン−プロピレン共重合体、エチレン−プロピレン−ジエン共重合体、エチレン−オクテン共重合体、α−オレフィンとα,β−不飽和カルボン酸及び、そのアルキルエステルとの共重合体が挙げられる。
強化繊維としてはガラス繊維、アスベスト繊維、シリカ繊維、シリカ・アルミナ繊維、アルミナ繊維、ジルコニア繊維、窒化硼素繊維、窒化珪素繊維、硼素繊維、チタン酸カリ繊維、ウォラストナイトの如き珪酸塩の繊維、硫酸マグネシウム繊維、ホウ酸アルミニウム繊維、さらにステンレス、アルミニウム、チタン、銅、真鍮等の金属の繊維状物、カーボンファイバー、カーボンナノチューブ等の炭素の繊維状物が挙げられる。これらの強化繊維の中でも強度、弾性率等の観点からガラス繊維が好ましい。
最内層におけるオレフィン系エラストマーの含有量は5質量%〜20質量%である。上記範囲であればブロー成形の際に十分な溶融張力が得られるので好ましい。
第二ポリアリーレンサルファイド系樹脂組成物とは、第一ポリアリーレンサルファイド系樹脂組成物100質量部に対して強化繊維を5質量部〜35質量部配合した樹脂組成物である。強化繊維の配合量は第一ポリアリーレンサルファイド系樹脂組成物100質量部に対して5質量部以上であれば、十分な機械的強度が得られるため好ましく、35質量部以下であれば、成形性、耐熱性、機械的強度の悪化を防ぐことができるので好ましい。より好ましい配合量の範囲は第一ポリアリーレンサルファイド系樹脂組成物100質量部に対して10質量部〜30質量部である。
一般に合成樹脂組成物の調整に用いられる設備と方法により製造でき、必要な部分を混合し、一軸又は二軸の押出機を使用して溶融混練し、押出して成形用ペレットの形で調整される。
多層成形体の成形方法は、特に限定されず公知の成形方法で成形することができる。例えば、共押出成形、シート共押出成形、共押出ブロー成形等が挙げられる。これらの成形方法によって、多層シート、多層ボトル、多層パイプ、多層チューブ、多層カップ等、所望形状の多層成形体を得ることができる。
本発明の多層成形体は、パイプやチューブ等に好適に用いられる。高温の液体や気体が通るパイプやチューブ等は、様々な物の部品として使用されているからである。その中の一つとして、例えば、内燃機関に用いられる配管が挙げられる。内燃機関に用いられる配管は、耐熱性が要求されるため、本発明の多層成形体は内燃機関に用いられる部品等として好ましく、特に、本発明の多層成形体の樹脂材料であるポリアリーレンサルファイドは、耐LLC(エチレングリコールを主成分とする不凍液)性に優れるため、車両用のヒーターパイプとして好ましく使用することができる。このような多層筒状成形体の成形には三次元ブロー成形機が好ましく用いられる。また、樹脂成分を溶融押出し、その途中でガラス繊維等を添加配合する方法も好ましく用いられる。なお、本発明の多層成形体は貫通孔を設ける等して分岐する構造をもつものであってもよい。
先ず、ポリフェニレンサルファイド樹脂(株式会社クレハ製、フォートロンKPS;樹脂温度310℃、せん断速度1200sec−1における溶融粘度140Pa・s)92.5質量%とオレフィン系エラストマー(エチレン/グリシジルメタクリレート共重合体70質量部にメチルメタクリレート/ブチルアクリレート共重合体(9/12)を30質量部グラフト重合させた共重合体(日本油脂株式会社製、モディパーA4300))7.5質量%をヘンシャルミキサーで予備混合した。
上記のポリフェニレンサルファイド樹脂を84.0質量%、上記のオレフィン系エラストマーを12.5質量%、樹脂成分100質量部に対し、平均繊維径13μm、繊維長3mmチョップドストランドガラス繊維を20質量部配合した以外は第一ポリアリーレン系樹脂組成物ペレットと同様にして第二ポリフェニレンサルファイド系樹脂組成物ペレットを作製した。
本発明の多層成形体は、第一ポリフェニレンサルファイド系樹脂組成物、第二ポリフェニレンサルファイド系樹脂組成物を、二本のシリンダーを有する三次元多層ブロー成形機に投入し、両樹脂ともシリンダー温度300℃、ダイ温度290℃で成形した。より具体的には以下のようにして成形した。
第二ポリアリーレンサルファイド樹脂組成物ペレットを射出成形機でシリンダー温度310℃、金型温度150℃の条件でASTM1型引張試験片を成形した。引張試験片を空気中で170℃に加熱処理する条件で1000時間まで、加熱処理により引張特性の低下を評価した。引張り強さの評価結果を図2、引張り伸びの評価結果を図3に示す。
第二ポリアリーレンサルファイド樹脂組成物ペレットを射出成形機でシリンダー温度310℃、金型温度150℃の条件で曲げ試験片(1/8インチ×10mm×60mm)を成形した。曲げ試験片を不凍液(日産純正不凍液原液)に浸潰し、170℃に加熱処理する条件で100時間まで、曲げ弾性率の低下を評価した。評価結果を図4に示す。
二層構造のヒーターパイプを空気中で170℃に加熱処理する条件で1000時間まで加熱処理した後、適当な部分で切断し、切断面を赤インク液に1時間浸漬させた。1時間経過後、切断面を洗浄し観察したが、二層構造の界面は確認できなかった。
10 第一接合部
11 第二接合部
12 シリコンラバー
13 金属バンド
Claims (6)
- ポリアリーレンサルファイド系樹脂95質量%から80質量%及びエポキシ基含有オレフィン系共重合体5質量%から20質量%からなる第一ポリアリーレンサルファイド系樹脂組成物を含む最内層と、
前記最内層の外側に配置され、前記第一ポリアリーレンサルファイド系樹脂組成物100質量部に対し強化繊維を5から35質量部配合した第二ポリアリーレンサルファイド系樹脂組成物からなる外層と、を備え、
前記第一ポリアリーレンサルファイド系樹脂組成物の溶融粘度が300Pa・sから1500Pa・sであり、
前記第二ポリアリーレンサルファイド系樹脂組成物の溶融粘度が450Pa・sから800Pa・sである多層ブロー成形体。 - 前記多層ブロー成形体が多層筒状成形体である請求項1に記載の多層ブロー成形体。
- 前記強化繊維がガラス繊維であって、その平均繊維長が3mm以下である請求項1又は2に記載の多層ブロー成形体。
- 前記多層ブロー成形体が三次元ブロー成形体であって、内燃機関用の配管である請求項1から3のいずれかに記載の多層ブロー成形体。
- 前記三次元ブロー成形体の成形と同時にインサート成形された取付部を更に備える請求項4に記載の多層ブロー成形体。
- 湾曲形状を有する請求項1から5のいずれかに記載の多層ブロー成形体。
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| JP2008020810A JP5465385B2 (ja) | 2008-01-31 | 2008-01-31 | 多層筒状成形体 |
| EP20080871960 EP2239135B1 (en) | 2008-01-31 | 2008-11-06 | Multilayered cylindrical molding |
| US12/865,291 US20100307627A1 (en) | 2008-01-31 | 2008-11-06 | Multi-layer cylindrical molded article |
| CN2008801256910A CN101925458A (zh) | 2008-01-31 | 2008-11-06 | 多层筒状成型体 |
| PCT/JP2008/070196 WO2009096075A1 (ja) | 2008-01-31 | 2008-11-06 | 多層筒状成形体 |
| US13/910,555 US8967207B2 (en) | 2008-01-31 | 2013-06-05 | Multi-layer cylindrical molded article |
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| US9494260B2 (en) * | 2012-04-13 | 2016-11-15 | Ticona Llc | Dynamically vulcanized polyarylene sulfide composition |
| US9493646B2 (en) | 2012-04-13 | 2016-11-15 | Ticona Llc | Blow molded thermoplastic composition |
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| US9758674B2 (en) | 2012-04-13 | 2017-09-12 | Ticona Llc | Polyarylene sulfide for oil and gas flowlines |
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| WO2016094381A1 (en) | 2014-12-11 | 2016-06-16 | Ticona Llc | Stabilized flexible thermoplastic composition and products formed therefrom |
| CN105881861A (zh) * | 2016-05-05 | 2016-08-24 | 万臣塑料制品(上海)有限公司 | 一种用于日化品的软管挤出制造工艺 |
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| KR20250126746A (ko) * | 2022-12-14 | 2025-08-25 | 솔베이 스페셜티 폴리머즈 유에스에이, 엘.엘.씨. | 가스 저장 및 수송을 위한 다층 구조 및 물품 |
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2008
- 2008-01-31 JP JP2008020810A patent/JP5465385B2/ja active Active
- 2008-11-06 WO PCT/JP2008/070196 patent/WO2009096075A1/ja not_active Ceased
- 2008-11-06 US US12/865,291 patent/US20100307627A1/en not_active Abandoned
- 2008-11-06 CN CN2008801256910A patent/CN101925458A/zh active Pending
- 2008-11-06 EP EP20080871960 patent/EP2239135B1/en not_active Not-in-force
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| Publication number | Publication date |
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| US20100307627A1 (en) | 2010-12-09 |
| JP2009178967A (ja) | 2009-08-13 |
| EP2239135A1 (en) | 2010-10-13 |
| WO2009096075A1 (ja) | 2009-08-06 |
| EP2239135A4 (en) | 2011-06-29 |
| CN101925458A (zh) | 2010-12-22 |
| EP2239135B1 (en) | 2013-12-04 |
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