JPWO2020027032A1 - 高圧水素に触れる押出成形品用のポリアミド樹脂組成物およびそれを用いた押出成形品 - Google Patents
高圧水素に触れる押出成形品用のポリアミド樹脂組成物およびそれを用いた押出成形品 Download PDFInfo
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- JPWO2020027032A1 JPWO2020027032A1 JP2019543133A JP2019543133A JPWO2020027032A1 JP WO2020027032 A1 JPWO2020027032 A1 JP WO2020027032A1 JP 2019543133 A JP2019543133 A JP 2019543133A JP 2019543133 A JP2019543133 A JP 2019543133A JP WO2020027032 A1 JPWO2020027032 A1 JP WO2020027032A1
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- resin composition
- weight
- polyamide
- pressure hydrogen
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- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 87
- 239000011342 resin composition Substances 0.000 title claims abstract description 85
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 235000012438 extruded product Nutrition 0.000 title claims abstract description 62
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- 150000005309 metal halides Chemical class 0.000 claims abstract description 37
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- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 49
- 239000004711 α-olefin Substances 0.000 claims description 27
- 229920000089 Cyclic olefin copolymer Polymers 0.000 claims description 21
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 15
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
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- 230000004048 modification Effects 0.000 claims description 11
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- ZWWQRMFIZFPUAA-UHFFFAOYSA-N dimethyl 2-methylidenebutanedioate Chemical compound COC(=O)CC(=C)C(=O)OC ZWWQRMFIZFPUAA-UHFFFAOYSA-N 0.000 description 1
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- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 1
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- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
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- 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
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- BLQJIBCZHWBKSL-UHFFFAOYSA-L magnesium iodide Chemical compound [Mg+2].[I-].[I-] BLQJIBCZHWBKSL-UHFFFAOYSA-L 0.000 description 1
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- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
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- 125000005439 maleimidyl group Chemical group C1(C=CC(N1*)=O)=O 0.000 description 1
- QWYFOIJABGVEFP-UHFFFAOYSA-L manganese(ii) iodide Chemical compound [Mn+2].[I-].[I-] QWYFOIJABGVEFP-UHFFFAOYSA-L 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- NKHAVTQWNUWKEO-IHWYPQMZSA-N methyl hydrogen fumarate Chemical class COC(=O)\C=C/C(O)=O NKHAVTQWNUWKEO-IHWYPQMZSA-N 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
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- 239000003345 natural gas Substances 0.000 description 1
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 1
- IPLJNQFXJUCRNH-UHFFFAOYSA-L nickel(2+);dibromide Chemical compound [Ni+2].[Br-].[Br-] IPLJNQFXJUCRNH-UHFFFAOYSA-L 0.000 description 1
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- 239000003208 petroleum Substances 0.000 description 1
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- 229920001643 poly(ether ketone) Polymers 0.000 description 1
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- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
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- 229920000573 polyethylene Polymers 0.000 description 1
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- 239000004575 stone Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
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- AXZWODMDQAVCJE-UHFFFAOYSA-L tin(II) chloride (anhydrous) Chemical compound [Cl-].[Cl-].[Sn+2] AXZWODMDQAVCJE-UHFFFAOYSA-L 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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Abstract
Description
本発明に用いられるポリアミド6樹脂(A)とは、6−アミノカプロン酸および/またはε−カプロラクタムを主たる原料とするポリアミド樹脂である。本発明の目的を損なわない範囲で、他の単量体が共重合されたものでもよい。ここで、「主たる原料とする」とは、ポリアミド樹脂を構成する単量体単位の合計100モル%中、6−アミノカプロン酸由来の単位またはε−カプロラクタム由来の単位を合計50モル%以上含むことを意味する。6−アミノカプロン酸由来の単位またはε−カプロラクタム由来の単位を70モル%以上含むことがより好ましく、90モル%以上含むことがさらに好ましい。
本発明に用いられる耐衝撃材(B)としては、ガラス転移温度が0℃以下のポリマーを指す。ここでガラス転移温度とは、示差走査熱量計(DSC)にて、測定開始温度を−70℃として、20℃/minの昇温速度で昇温時に生じる変曲点から求めることができる。例えば、オレフィン系樹脂、アクリル系ゴム、シリコーン系ゴム、フッ素系ゴム、スチレン系ゴム、ニトリル系ゴム、ビニル系ゴム、ウレタン系ゴム、ポリアミドエラストマー、ポリエステルエラストマー、アイオノマーなどが挙げられる。これらを2種以上配合してもよい。
本発明に用いられる金属ハロゲン化物(C)としては、例えば、ヨウ化リチウム、ヨウ化ナトリウム、ヨウ化カリウム、臭化リチウム、臭化ナトリウム、臭化カリウム、塩化リチウム、塩化ナトリウム、塩化カリウムなどのアルカリ金属ハロゲン化物、ヨウ化マグネシウム、ヨウ化カルシウム、臭化マグネシウム、臭化カルシウム、塩化マグネシウム、塩化カルシウムなどのアルカリ土類金属ハロゲン化物;ヨウ化マンガン(II)、臭化マンガン(II)、塩化マンガン(II)などの第7族金属ハロゲン化物;ヨウ化鉄(II)、臭化鉄(II)、塩化鉄(II)などの第8族金属ハロゲン化物;ヨウ化コバルト(II)、臭化コバルト(II)、塩化コバルト(II)などの第9族金属ハロゲン化物;ヨウ化ニッケル(II)、臭化ニッケル(II)、塩化ニッケル(II)などの第10族金属ハロゲン化物;ヨウ化銅(I)、臭化銅(I)、塩化銅(I)などの第11族金属ハロゲン化物;ヨウ化亜鉛、臭化亜鉛、塩化亜鉛などの第12族金属ハロゲン化物;ヨウ化アルミニウム(III)、臭化アルミニウム(III)、塩化アルミニウム(III)などの第13族金属ハロゲン化物;ヨウ化スズ(II)、臭化スズ(II)、塩化スズ(II)などの第14族金属ハロゲン化物;三ヨウ化アンチモン、三臭化アンチモン、三塩化アンチモン、ヨウ化ビスマス(III)、臭化ビスマス(III)、および塩化ビスマス(III)などの第15族金属ハロゲン化物などが挙げられる。これらを2種以上併用することができる。
本発明のポリアミド樹脂組成物は、ポリアミド6樹脂(A)70〜99重量部と耐衝撃材(B)1〜30重量部の合計100重量部に対し、金属ハロゲン化物(C)0.005〜1重量部を配合してなる。
式1)x =(1/4)Σxk (k=1〜4)
式2)V =(1/4)Σ(xk−x)2 (k=1〜4)
式3)σ =√V
x:4箇所の厚みの平均
xk:各箇所での厚み(mm)
V:厚みの分散
σ:厚みの標準偏差。
実施例1〜4および比較例4、5、7、8により得られた押出成形品について、X線CT解析を行い、欠陥点の有無を観察した。欠陥点のない押出成形品をオートクレーブに入れた後、オートクレーブ中に水素ガスを20MPaまで5分間かけて注入し、1時間保持した後、5分間かけて常圧になるまで減圧した。これを1サイクルとして100サイクル繰り返した。100サイクル繰り返し後の試験片について、ヤマト科学(株)製TDM1000−ISを用いてX線CT解析を行い、10μm以上の欠陥点の有無を観察し、欠陥点が存在しないものを「無」、欠陥点が存在するものを「有」とした。
実施例1〜4および比較例4、5、7、8により得られた押出成形品(厚み約3mm)から、高さ100mm、幅5mmで、押出成形方向が高さ方向になるよう切り出した試験片5本について、温度23℃、湿度50%の条件で30分間調湿後、チャック間距離50mm、10mm/分の速度で引張試験を実施し、引張伸度を評価した。5本測定した平均の値を引張伸度とした。なお、押出成形品の引張伸度が50%以上であることは、押出成形時にかかる熱を受けた後でも靱性が維持され、熱安定性が高いことを示す。
各実施例および比較例により得られたペレットを、東洋精機製作所製キャピログラフ1C(シリンダー内径9.55mm、オリフィスの長さ10.0mm、内径1.0mm)を用い、試験温度を260℃に設定したシリンダー中にポリアミド樹脂組成物を充填し、圧密して20分間保持することによって溶融させてから、ピストン速度を10mm/minとして260℃の溶融樹脂をオリフィスからストランド状に押出する。このストランドを、下方の張力検出用プーリーの円形ガイドを通過させて10m/minの引き取り速度で巻き取り、検出される張力を溶融張力とした。
各実施例および比較例により得られたペレットを、東洋精機製作所製キャピログラフ1C(シリンダー内径9.55mm、オリフィスの長さ10.0mm、内径1.0mm)を用い、試験温度を260℃に設定したシリンダー中にポリアミド樹脂組成物を充填し、圧密して20分間保持することによって溶融させてから、ピストン速度を10mm/minとして260℃の溶融樹脂をオリフィスからストランド状に押出する。このストランドを、下方の張力検出用プーリーの円形ガイドを通過させて10m/minの引き取り速度で巻き取り、検出される張力を安定させた。安定した後に、400m/min2の加速度で引き取り速度を加速させながら巻き取り、ストランドが破断した時点での引き取り速度を破断時引き取り速度した。
実施例1〜4および比較例4、5、7、8により得られた押出成形品について、円周方向に4分割した押出成形品片のそれぞれの弧の中心を、ポイントマイクロメーターを用いて測定し、得られる厚みxkから、下記式により厚みの標準偏差σを算出した。
式1)x =(1/4)Σxk (k=1〜4)
式2)V =(1/4)Σ(xk−x)2 (k=1〜4)
式3)σ =√V
x:4箇所の厚みの平均
xk:各箇所での厚み(mm)
V:厚みの分散
σ:厚みの標準偏差。
PA6(ηr2.7):ポリアミド6樹脂(樹脂濃度0.01g/mlの98%濃硫酸溶液中25℃における相対粘度2.70)
PA6(ηr3.0):ポリアミド6樹脂(樹脂濃度0.01g/mlの98%濃硫酸溶液中25℃における相対粘度3.00)
PA6(ηr4.4):ポリアミド6樹脂(樹脂濃度0.01g/mlの98%濃硫酸溶液中25℃における相対粘度4.40)
PA6/PA66共重合体:ポリアミド6/ポリアミド66共重合体(融点190℃、樹脂濃度0.01g/mlの98%濃硫酸溶液中25℃における相対粘度4.20)。
耐衝撃材1:エチレン/1−ブテン共重合体(MFR(190℃、2160g荷重)0.5g/10分、密度0.862g/cm3)。
金属ハロゲン化物1:ヨウ化銅(I)(和光純薬工業(株)製)
金属ハロゲン化物2:ヨウ化カリウム(和光純薬工業(株)製) 。
表1、2記載の各原料を、シリンダー温度を240℃に設定し、ニーディングゾーンを1つ設けたスクリューアレンジとし、スクリュー回転数を150rpmとした2軸スクリュー押出機(JSW社製TEX30α−35BW−7V)(L/D=45(なお、ここでのLは原料供給口から吐出口までの長さであり、Dはスクリューの直径である。))に供給して溶融混練した。20kg/hの速度でダイから吐出されたガットを、10℃に温調した水を満たした冷却バス中を10秒間かけて通過させることにより急冷した後、ストランドカッターでペレタイズし、ペレットを得た。得られたペレットを、真空乾燥機で、温度80℃、12時間真空乾燥し、乾燥後ペレットを得た。得られたペレットから、押出機を用いて、押出温度260℃の条件でダイスから押出、サイジングダイスを通した後に冷却し、おおよそ、外径100mm、内径94mmのパイプ形状の押出成形品を押出成形した。厚みについては、式1)より平均厚みxを求め、結果を表1、2に記載した。得られた押出成形品を200mmの長さに切り出した押出成形品を用いて、前述の方法により評価した結果を表1、2に記載した。
表2記載の各原料を、シリンダー温度を240℃に設定し、ニーディングゾーンを1つ設けたスクリューアレンジとし、スクリュー回転数を150rpmとした2軸スクリュー押出機(JSW社製TEX30α−35BW−7V)(L/D=45(なお、ここでのLは原料供給口から吐出口までの長さであり、Dはスクリューの直径である。))に供給して溶融混練した。20kg/hの速度でダイから吐出されたガットを、10℃に温調した水を満たした冷却バス中を10秒間かけて通過させることにより急冷した後、ストランドカッターでペレタイズし、ペレットを得た。得られたペレットを、真空乾燥機で、温度80℃、12時間真空乾燥し、乾燥後ペレットを得た。得られたペレットから、押出機を用いて、押出温度260℃の条件でダイスから押出した際、ドローダウンが起こり、押出成形品を得ることが出来なかった。
表2記載の各原料を、シリンダー温度を225℃に設定し、ニーディングゾーンを1つ設けたスクリューアレンジとし、スクリュー回転数を100rpmとした2軸スクリュー押出機(JSW社製TEX30α−35BW−7V)(L/D=45(なお、ここでのLは原料供給口から吐出口までの長さであり、Dはスクリューの直径である。))に供給して溶融混練した。20kg/hの速度でダイから吐出されたガットを、10℃に温調した水を満たした冷却バス中を10秒間かけて通過させることにより急冷した後、ストランドカッターでペレタイズし、ペレットを得た。得られたペレットを、真空乾燥機で、温度80℃、12時間真空乾燥し、乾燥後ペレットを得た。得られたペレットから、押出機を用いて、押出温度260℃の条件でダイスから押出、サイジングダイスを通した後に冷却し、おおよそ、外径100mm、内径94mmのパイプ形状の押出成形品を押出成形した。厚みについては、式1)より平均厚みxを求め、結果を表2に記載した。得られた押出成形品を200mmの長さに切り出した押出成形品を用いて、前述の方法により評価した結果を表2に記載した。
表2記載の各原料を、シリンダー温度を300℃に設定し、ニーディングゾーンを3つ設けたスクリューアレンジとし、スクリュー回転数を300rpmとした2軸スクリュー押出機(JSW社製TEX30α−35BW−7V)(L/D=45(なお、ここでのLは原料供給口から吐出口までの長さであり、Dはスクリューの直径である。))に供給して溶融混練した。20kg/hの速度でダイから吐出されたガットを、10℃に温調した水を満たした冷却バス中を10秒間かけて通過させることにより急冷した後、ストランドカッターでペレタイズし、ペレットを得た。得られたペレットを、真空乾燥機で、温度80℃、12時間真空乾燥し、乾燥後ペレットを得た。得られたペレットから、押出機を用いて、押出温度260℃の条件でダイスから押出、サイジングダイスを通した後に冷却し、おおよそ、外径100mm、内径94mmのパイプ形状の押出成形品を押出成形した。厚みについては、式1)より平均厚みxを求め、結果を表2に記載した。得られた押出成形品を200mmの長さに切り出した押出成形品を用いて、前述の方法により評価した結果を表2に記載した。
Claims (9)
- ポリアミド6樹脂(A)70〜99重量部と耐衝撃材(B)1〜30重量部の合計100重量部に対し、金属ハロゲン化物(C)0.005〜1重量部を配合してなるポリアミド樹脂組成物であって、前記ポリアミド樹脂組成物の260℃で測定したときの溶融張力が20mN以上であり、かつ260℃で測定したときの破断時引き取り速度が30m/min以上である、高圧水素に触れる押出成形品用のポリアミド樹脂組成物。
- 樹脂濃度0.01g/mlの98%硫酸溶液の25℃の温度におけるポリアミド6樹脂(A)の相対粘度(ηr)が、3.3〜7.0である、請求項1記載の高圧水素に触れる押出成形品用のポリアミド樹脂組成物。
- 前記耐衝撃材(B)として、不飽和カルボン酸および/またはその誘導体変性エチレン/α−オレフィン共重合体が用いられる、請求項1または2に記載の高圧水素に触れる押出成形品用のポリアミド樹脂組成物。
- 前記不飽和カルボン酸および/またはその誘導体変性エチレン/α−オレフィン共重合体において、不飽和カルボン酸および/またはその誘導体変性エチレン/α−オレフィン共重合体100重量部に対して、変性に由来して導入された不飽和カルボン酸および/またはその誘導体部分が、0.1〜3重量部である、請求項3に記載の高圧水素に触れる押出成形品用のポリアミド樹脂組成物。
- 前記金属ハロゲン化物(C)がアルカリ金属ハロゲン化物および/またはヨウ化銅を含むことを特徴とする請求項1〜4のいずれかに記載の高圧水素に触れる押出成形品用のポリアミド樹脂組成物。
- 請求項1〜5のいずれか記載のポリアミド樹脂組成物からなる、高圧水素に触れる押出成形品。
- 前記押出成形品が、パイプ形状である請求項6記載の高圧水素に触れる押出成形品。
- 前記パイプ形状の押出成形品を円周方向に4分割したそれぞれの厚みの標準偏差が0.1以下であることを特徴とする請求項7記載の高圧水素に触れる押出成形品。
- 請求項1〜5のいずれか記載のポリアミド樹脂組成物を押出成形して押出成形品を得、次いで該押出成形品を樹脂組成物からなる成形品と溶着する工程を含む、高圧水素タンクライナーの製造方法。
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EP3816230B1 (en) | 2022-08-17 |
EP3816230A4 (en) | 2021-07-21 |
EP3816230A1 (en) | 2021-05-05 |
US11261326B2 (en) | 2022-03-01 |
KR20210040285A (ko) | 2021-04-13 |
CN112399994B (zh) | 2023-05-09 |
WO2020027032A1 (ja) | 2020-02-06 |
KR102695273B1 (ko) | 2024-08-16 |
CA3102986A1 (en) | 2020-02-06 |
CN112399994A (zh) | 2021-02-23 |
JP6690785B1 (ja) | 2020-04-28 |
US20210246307A1 (en) | 2021-08-12 |
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