JP2016512860A - 高充填、高弾性軟質発泡ポリエチレン材料及びその調製方法 - Google Patents
高充填、高弾性軟質発泡ポリエチレン材料及びその調製方法 Download PDFInfo
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Abstract
Description
高充填、高弾性軟質発泡ポリエチレン材料であって、原料として、ポリエチレン 15−20重量部、エラストマー5−20重量部、変性炭酸カルシウム60−80重量部、化学発泡剤1−10重量部、架橋剤0.5−1.5重量部、及び物理発泡剤1−5重量部を含有する高充填、高弾性軟質発泡ポリエチレン材料。
(1)メッシュ数は、500目以上である変性炭酸カルシウムを水分質量含有量0.1%以下までに乾燥するステップ。
(2)ステップ(1)で得られた変性炭酸カルシウム粉末とカップリング剤を質量比100:0.5〜3で高速攪拌ミルにおいて、5〜20分間混合するステップ。
1)変性炭酸カルシウムを水分質量含有量0.1%以下まで乾燥するステップ。
2)ポリエチレンとエラストマーをオープンミルにおいて、混練温度110〜120℃、混練時間2〜5分間で混練するステップ。
3)変性炭酸カルシウム、物理発泡剤、化学発泡剤、架橋剤をその順で上記のステップに記載のシステムに入れて、混練温度120〜130℃、混練時間10〜15分でさらに混練するステップ。
4)混練し得た混練物を金型内に入れ、該金型をプレート加硫機において、160〜180℃、5〜15MPaで5〜15分間加圧発泡させて取り出し、軽くプレスして発泡ポリエチレン材料を獲得するステップ、または、混練し得た混練物を金型内に入れ、該金型をプレート加硫機において、145〜165℃、5〜15MPaで3〜10分間加圧発泡させ、室温まで冷却して脱型し、脱型後の発泡物を170〜180℃で5〜10分間二次発泡して発泡ポリエチレン材料を獲得するステップ。
高充填、高弾性軟質発泡ポリエチレン材料であって、原料として、ポリエチレン16重量部、エラストマー6重量部、変性炭酸カルシウム61重量部、化学発泡剤2重量部、架橋剤0.6重量部、及び物理発泡剤2重量部を含有する。
高充填、高弾性軟質発泡ポリエチレン材料であって、原料として、ポリエチレン19重量部、エラストマー19重量部、変性炭酸カルシウム79重量部、化学発泡剤9重量部、架橋剤1.4重量部、及び物理発泡剤4重量部を含有する。
高充填、高弾性軟質発泡ポリエチレン材料であって、原料として、ポリエチレン15重量部、エラストマー13重量部、変性炭酸カルシウム71重量部、化学発泡剤6重量部、架橋剤1.1重量部、及び物理発泡剤3重量部を含有する。
1)変性炭酸カルシウムを水分質量含有量0.1%以下まで乾燥するステップ。
2)ポリエチレンとエラストマーをオープンミルにおいて、混練温度110〜120℃、混練時間2〜5分間で混練するステップ。
3)変性炭酸カルシウム、物理発泡剤、化学発泡剤、架橋剤をその順で上記のステップに記載のシステムに入れて、混練温度120〜130℃、混練時間10〜15分間でさらに混練するステップ。
4)混練し得た混練物を金型内に入れ、該金型をプレート加硫機において、160〜180℃、5〜15MPaで5〜15分間加圧発泡させて取り出し、軽くプレスして発泡ポリエチレン材料を獲得するステップ、または、混練し得た混練物を金型内に入れ、該金型をプレート加硫機において、145〜165℃、5〜15MPaで3〜10分間加圧発泡させ、室温まで冷却して脱型し、脱型後の発泡物を170〜180℃で5〜10分間二次発泡して発泡ポリエチレン材料を獲得するステップ。
1)変性炭酸カルシウムを水分質量含有量0.1%以下まで乾燥するステップ。
2)ポリエチレンとエラストマーをオープンミルにおいて、混練温度115〜120℃、混練時間4分間で混練するステップ。
3)変性炭酸カルシウム、物理発泡剤、化学発泡剤、架橋剤をその順で上記のステップに記載のシステムに入れて、混練温度125℃、混練時間13分間でさらに混練するステップ。
4)混練し得た混練物を金型内に入れ、該金型をプレート加硫機において、170℃、10MPaで10分間加圧発泡させて取り出し、軽くプレスして発泡ポリエチレン材料を獲得するステップ、または、混練し得た混練物を金型内に入れ、該金型をプレート加硫機において、155℃、10MPaで7分間加圧発泡させ、室温まで冷却して脱型し、脱型後の発泡物を175℃で8分間二次発泡して発泡ポリエチレン材料を獲得するステップ。
まずは、50gの低密度ポリエチレンと50gのPOEを均一に混合し、二軸オープンミルにおいて115℃で3分間混練し、そして、200gの500目チタネートで処理した変性炭酸カルシウム(チタネートカップリング剤の型番:AT2−311W)、5gの物理発泡剤、6gのアゾジカーボンアミド、4gの酸化亜鉛、1gのステアリン酸亜鉛、0.5gのジクミルペルオキシドをその順で入れて、130℃で15分間混練した。その後、混練し得た混練物を金型内に入れて、該金型をプレート加硫機において、165℃、10MPaで10分間加圧発泡させて取り出し、軽くプレスして発泡ポリエチレン材料を獲得した。
Claims (8)
- 原料として、ポリエチレン15−20重量部、エラストマー5−20重量部、変性炭酸カルシウム60−80重量部、化学発泡剤1−10重量部、架橋剤0.5−1.5重量部、及び物理発泡剤1−5重量部を含有することを特徴とする高充填、高弾性軟質発泡ポリエチレン材料。
- 前記ポリエチレンは、低密度ポリエチレン、高密度ポリエチレン、直鎖状低密度ポリエチレンの中の少なくとも一種であることを特徴とする請求項1に記載の高充填、高弾性軟質発泡ポリエチレン材料。
- 前記エラストマーは、POE、EVA、SEBS、SBS、EPDM、EPRの中の少なくとも一種であることを特徴とする請求項1に記載の高充填、高弾性軟質発泡ポリエチレン材料。
- 前記変性炭酸カルシウムは、カップリング剤で処理した変性炭酸カルシウムであり、前記変性炭酸カルシウムのメッシュ数は、500目以上であることを特徴とする請求項1に記載の高充填、高弾性軟質発泡ポリエチレン材料。
- 前記化学発泡剤は、アゾジカーボンアミド、酸化亜鉛、ステアリン酸亜鉛を質量比1:(1−1.5):(0.15−2)で混合してなることを特徴とする請求項1に記載の高充填、高弾性軟質発泡ポリエチレン材料。
- 前記架橋剤は、ジクミルペルオキシド、または、2,5−ジメチル−2,5−ジ(t−ブチルパーオキシ)ヘキサンを含むことを特徴とする請求項1に記載の高充填、高弾性軟質発泡ポリエチレン材料。
- 前記物理発泡剤は、膨張性微小球発泡剤であることを特徴とする請求項1に記載の高充填、高弾性軟質発泡ポリエチレン材料。
- 1)変性炭酸カルシウムを水分質量含有量0.1%以下まで乾燥するステップと、
2)ポリエチレンとエラストマーをオープンミルにおいて、混練温度110〜120℃、混練時間2〜5分間で混練するステップと、
3)変性炭酸カルシウム、物理発泡剤、化学発泡剤、架橋剤をその順で上記のステップに記載のシステムに入れて、混練温度120〜130℃、混練時間10〜15分間でさらに混練するステップと、
4)混練した混練物を金型内に入れ、該金型をプレート加硫機において、160〜180℃、5〜15MPaで5〜15分間加圧発泡させて取り出し、軽くプレスして発泡ポリエチレン材料を獲得するステップ、または、混練した混練物を金型内に入れ、該金型をプレート加硫機において、145〜165℃、5〜15MPaで3〜10分間加圧発泡させてから室温まで冷却して脱型し、脱型後の発泡物を170〜180℃で5〜10分間二次発泡して発泡ポリエチレン材料を獲得するステップのいずれかのステップと、
を含むことを特徴とする請求項1乃至7の何れか一項に記載の高充填、高弾性軟質発泡ポリエチレン材料の調製方法。
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