JP4904526B2 - 消臭機能を有するポリオレフィン系樹脂積層発泡体、およびそれからなる円筒体または成型体 - Google Patents
消臭機能を有するポリオレフィン系樹脂積層発泡体、およびそれからなる円筒体または成型体 Download PDFInfo
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- JP4904526B2 JP4904526B2 JP2006242400A JP2006242400A JP4904526B2 JP 4904526 B2 JP4904526 B2 JP 4904526B2 JP 2006242400 A JP2006242400 A JP 2006242400A JP 2006242400 A JP2006242400 A JP 2006242400A JP 4904526 B2 JP4904526 B2 JP 4904526B2
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- foam
- polyolefin resin
- polyolefin
- deodorizing function
- gas
- 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.)
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Description
100mm角に裁断した試験体をテドラーバッグに入れヒートシールにより密封したものと、試験体を入れない以外は同様に調整したものを用意し、それぞれに予め作成したアンモニアガス3リットルを封入した後、室温で3時間放置した。放置後、それぞれの濃度をガス検知管(株式会社ガステック社製、検知管は3Laを使用)により測定した。
ここで用いたアンモニアガスの調整方法は、テドラーバックに28%アンモニア水特級試薬(ナカライテクス株式会社製)2gと空気5リットルを封入し、室温で3時間放置したものを使用した。
100mm角に裁断した試験体をテドラーバッグに入れヒートシールにより密封したものと、試験体を入れない以外は同様に調整したものを用意し、それぞれに予め作成した酢酸ガス3リットルを封入した後、室温で3時間放置した。放置後、それぞれの濃度をガス検知管(株式会社ガステック社製、検知管は81を使用)により測定した。
ここで用いた酢酸ガスの調整方法は、テドラーバックに酢酸特級試薬(ナカライテクス株式会社製)0.5gと空気5リットルを封入し、室温で3時間放置したものを使用した。
試験体を入れたもののガス濃度か試験体を入れていないもののガス濃度で除した数値の百分率(以下ガス残存率と称する)が、アンモニアガス消臭試験法と酢酸ガス消臭試験法のどちらも95%以下を合格(◎)と判定し、どちらか一方の試験で95%以下であれば合格(○)と判定し、両試験とも95%を超える場合は不合格(×)と判定した。
MFRが3.6g/10分、密度が0.922g/cm3の高圧法低密度ポリエチレン(東ソー株式会社製ペトロセン310)50重量部とMFRが3.0g/10分、密度が0.935g/cm3の直鎖状低密度ポリエチレン(東ソー株式会社製ニポロン−L M50)50重量部をそれぞれ粉砕機を用い2mm以下に粉砕した後、熱分解型化学発泡剤アゾジカルボンアミド(永和化成工業株式会社製ビニホールAC#1)10.5重量部、酸化防止剤ペンタエリスリト−ルテトラキス[3-(3,5-ジ−tert-ブチル−4−ヒドロキシフェニル)プロピオネート](チバ・スペシャリティ・ケミカルズ株式会社製IRGANOX1010)0.3重量部をスーパーミキサーで混合し、140〜160℃に加熱した90mmφの単軸押出機でTダイを用いて厚さ1.8mmの長尺シート状に成形した後、70kGyの電子線を加速電圧800kVで照射し、架橋せしめた後、240℃に加熱した縦型熱風発泡装置で2〜3分加熱し厚さ4.3mm、見掛け密度31kg/m3の長尺発泡体を得た。
MFRが3.6g/10分、密度が0.922g/cm3の高圧法低密度ポリエチレン(東ソー株式会社製ペトロセン310)100重量部を粉砕機を用い2mm以下に粉砕した後、熱分解型化学発泡剤アゾジカルボンアミド(永和化成工業株式会社製ビニホールAC#1)3.5重量部、酸化防止剤ペンタエリスリト−ルテトラキス[3-(3,5-ジ−tert-ブチル−4−ヒドロキシフェニル)プロピオネート](チバ・スペシャリティ・ケミカルズ株式会社製IRGANOX1010)0.3重量部をスーパーミキサーで混合し、140〜160℃に加熱した90mmφの単軸押出機でTダイを用いて厚さ1.8mmの長尺シート状に成形した後、70kGyの電子線を加速電圧800kVで照射し、架橋せしめた後、240℃に加熱した縦型熱風発泡装置で2〜3分加熱し厚さ2.7mm、見掛け密度105kg/m3の長尺発泡体としたほかは実施例1と同様に消臭機能を有するポリオレフィン系樹脂積層発泡体を得た。この時の樹脂層の厚みを幅方向に5点ノギスで測定した平均値は0.08mmであった。
表1に示すとおり、上記方法で得た消臭機能を有するポリオレフィン系樹脂積層発泡体のアンモニアガスのガス残存率は92%、酢酸ガスのガス残存率は86%であり合格(◎)判定であった。
MFRが8.0g/10分、密度が0.925g/cm3の高圧法低密度ポリエチレン(東ソー株式会社製ペトロセン207)100重量部を粉砕機を用い2mm以下に粉砕した後、熱分解型化学発泡剤アゾジカルボンアミド(永和化成工業株式会社製ビニホールAC#1)15.5重量部、酸化防止剤ペンタエリスリト−ルテトラキス[3-(3,5-ジ−tert-ブチル−4−ヒドロキシフェニル)プロピオネート](チバ・スペシャリティ・ケミカルズ株式会社製IRGANOX1010)0.3重量部をスーパーミキサーで混合し、140〜160℃に加熱した90mmφの単軸押出機でTダイを用いて厚さ1.8mmの長尺シート状に成形した後、60kGyの電子線を加速電圧800kVで照射し、架橋せしめた後、240℃に加熱した縦型熱風発泡装置で2〜3分加熱し厚さ5.2mm、見掛け密度21kg/m3の長尺発泡体としたほかは実施例1と同様に消臭機能を有するポリオレフィン系樹脂積層発泡体を得た。この時の樹脂層の厚みを幅方向に5点ノギスで測定した平均値は0.18mmであった。
表1に示すとおり、上記方法で得た消臭機能を有するポリオレフィン系樹脂積層発泡体のアンモニアガスのガス残存率は96%、酢酸ガスのガス残存率は92%であり合格(○)判定であった。
消臭剤添加量を2重量部としたほかは実施例1と同様に消臭機能を有するポリオレフィン系樹脂積層発泡体を得た。この時の樹脂層の厚みを幅方向に5点ノギスで測定した平均値は0.13mmであった。
MFRが24g/10分、密度が0.918g/cm3の高圧法低密度ポリエチレン(東ソー株式会社製ペトロセン202)100重量部に消臭剤としてタンニン(松尾薬品産業株式会社製パンシル)10重量部を120〜140℃に加熱した40mmφの二軸押出機で溶融混練し、ノズルから押出すことにより直径2mmの棒状のストランドを作り、水冷後長さ3mmにカッティングし消臭性樹脂組成物を得たほかは実施例1と同様に消臭機能を有するポリオレフィン系樹脂積層発泡体を得た。この時の樹脂層の厚みを幅方向に5点ノギスで測定した平均値は0.10mmであった。
表1に示すとおり、上記方法で得た消臭機能を有するポリオレフィン系樹脂積層発泡体のアンモニアガスのガス残存率は91%、酢酸ガスのガス残存率は92%であり合格(◎)判定であった。
実施例1の消臭機能を有するポリオレフィン系樹脂積層発泡体を100mm幅に裁断し、最小直径が34mmの円錐状口金中に180℃の熱風を吹付けながら円筒状に成型した。ガス消臭試験のサンプルは長さ100mmに裁断した円筒を試験体とした。
実施例1の消臭機能を有するポリオレフィン系樹脂積層発泡体を150℃の熱風オーブン中で3分間加熱し、直径180mm、深さ50mmの円柱状メス型金型で真空成型した。ガス消臭試験のサンプルは円柱底面より100mm角を裁断し試験体とした。
消臭剤を用いない以外は実施例1と同様に消臭機能を有するポリオレフィン系樹脂積層発泡体を得た。この時の樹脂層の厚みを幅方向に5点ノギスで測定した平均値は0.11mmであった。
表1に示すとおり、上記方法で得た消臭機能を有するポリオレフィン系樹脂積層発泡体のアンモニアガスのガス残存率は100%、酢酸ガスのガス残存率は100%であり不合格(×)判定であった。
Claims (3)
- ポリオレフィン系樹脂発泡体の少なくとも片面の表層面に、少なくとも消臭剤を含むポリオレフィン系樹脂層が設けられ、前記消臭剤が、ポリオレフィン系樹脂層のポリオレフィン系樹脂100重量部に対し1〜30重量部であることを特徴とする消臭機能を有するポリオレフィン系樹脂積層発泡体。
- 請求項1に記載の消臭機能を有するポリオレフィン系樹脂積層発泡体からなる円筒体。
- 請求項1に記載の消臭機能を有するポリオレフィン系樹脂積層発泡体からなる成型体。
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