JP7013494B2 - ゴムと発泡体とを直接結合させた複合材料 - Google Patents
ゴムと発泡体とを直接結合させた複合材料 Download PDFInfo
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Description
(a)硬化ゴムと、任意にカルボキシル基または無水物基を有する第1のコポリマーとを含むゴム層と、
(b)架橋エチレンビニルアセテートと、任意にカルボキシル基またはグリシジルメタクリレート基を有する第2のコポリマーとを含む発泡体層と、を含み、
発泡体層は、ゴム層に直接接着する少なくとも1つの表面を有し、ただし、第1のコポリマーまたは第2のコポリマーのいずれかが存在し、複合材料が、ゴム層と発泡体層との間の界面に接合剤または接着フィルムを含まない。
(1)ゴムと、硬化剤と、任意にカルボキシル基または無水物基を有する第1のコポリマーとを含む混合物を硬化させてゴム層を得ること、
(2)EVAと、架橋剤と、発泡剤と、任意にカルボキシル基またはグリシジルメタクリレート基を有する第2のコポリマーとを含む混合物を発泡させて発泡体層を得ること、
(3)ゴム層を発泡体層の少なくとも1つの表面に配置して組立品を得て、その組立品をホットプレスして複合材料を得ることを含む。
本発明で使用されるコポリマーは、硬化ゴムおよび/またはEVA発泡体を改質し、将来、ゴム層と発泡体層との間の結合強度を改善するために使用され、発泡体層は、ゴム層に直接接着する少なくとも1つの表面を有し、複合材料は、ゴム層と発泡体層との間の界面に接合剤または接着フィルムを含まない。
本発明におけるゴム層は、硬化ゴムを含むか、または硬化ゴムと、カルボキシル基または無水物基を有する第1のコポリマーとを含む。
本発明の発泡体層は、架橋EVAを含むか、架橋EVAとカルボキシル基またはグリシジルメタクリレート基を有する第2のコポリマーとを含む。
本明細書では、前述の複合材料を調製する方法がさらに開示される。
(1)ゴムと、硬化剤と、任意にカルボキシル基または無水物基を有する第1のコポリマーとを含む混合物を硬化させて、ゴム層を得る、
(2)EVAと、架橋剤と、発泡剤と、任意にカルボキシル基またはグリシジルメタクリレート基を有する第2のコポリマーとを含む混合物を発泡させて、発泡体層を得る、
(3)ゴム層を発泡体層の少なくとも1つの表面に配置して組立品を得て、その組立品をホットプレスして複合材料を得る。
本明細書では、前述の複合材料を含むか、またはそれから製造される物品がさらに開示される。物品は、履物のソール、カーペット、ヨガマット、音響パネル、クッションボードとして使用される。
●ゴム:ニトリルブタジエンゴム(25pbw、Petro China CO.Ltd.から入手)とブタジエンゴム(75pbw、Sinopec Co.Ltd.から入手)との混合物
●活性剤-1:酸化亜鉛(3.5pbw、粉末、純度>99%、Sino Reagent Co.,Ltd.から入手)とステアリン酸(1pbw、ペレット純度>99%、Sino Reagent Co.Ltdから入手)との混合物
●充填剤-1:シリカ、粉末、商品名Ultrasil(登録商標)VN3でDegussaから入手
●加工助剤:大豆油(3pbw、Aladdin reagentから入手)と、ワックス(0.5pbw、Aladdin reagentから入手)とポリエチレングリコール(2.5pbw分子量:4000、Sino Reagent Co.Ltd.から入手)との混合物
●促進剤:2,2’-ジベンゾチアゾールジスルフィド(0.6pbw、CAS番号120-78-5、Willing Chem.Co.から入手)とテトラキス(フェニルメチル)チオペルオキシジ(カルボチオアミド)(0.2pbw、CAS番号10591-85-2、Willing Chem.Coから入手)との混合物
●硬化剤:硫黄、粉末、純度>99%、Sino Reagent Co.Ltdから入手
●EVA:EVAの総重量に基づき、75重量%のエチレンと25重量%のビニルアセテートとを含むコポリマー、ASTM D1238に従って190℃で測定したMIが3g/10分、DuPontから入手
●活性剤-2:酸化亜鉛(1pbw、粉末、純度>99%、Sino Reagent Co.,Ltd.から入手)とステアリン酸(0.5pbw、ペレット純度>99%、Sino Reagent Co.,Ltd.から入手)との混合物
●充填剤-2:二酸化チタン(2.5pbw、Chemoursから入手)とタルク(5pbw、Haicheng(China),Co.Ltd.から入手)との混合物
●発泡剤:アゾビスホルムアミド、Haihong(China)Co.Ltd.から入手
●架橋剤:1,3-ビス(tert-ブチルペルオキシ-イソプロピル)ベンゼン、Haili(China)Co.Ltd.から入手
●第1のコポリマー:第1のコポリマーの総重量に基づき、90重量%のエチレンと10重量%のマレイン酸モノエチルエステルとを含むコポリマー、ASTM D1238に従って190℃で測定したMIが25g/10分、DuPontから入手
●第2のコポリマー-1:第1のコポリマーの総重量に基づき、90重量%のエチレンと10重量%のマレイン酸モノエチルエステルとを含むコポリマー、ASTM D1238に従って190℃で測定したMIが25g/10分、DuPontから入手
●第2のコポリマー-2:76重量%のエチレンと、15重量%のビニルアセテートと、9重量%のグリシジルメタクリレートとを含むコポリマー、ASTM D1238に従って190℃で測定したMIが8g/10分、DuPontから入手
CE1およびE1~E11のそれぞれで、複合材料を次のようにして調製した。
ゴムと、充填剤-1と、活性剤-1と、加工助剤と、任意に第1のコポリマーとをミキサー機(Brabender)にて130℃で混合して混合物を得た後、硬化剤と、促進剤と、混合物とをカレンダーするために2本ロールミル(Wei Fu Hsing Machinery製)に加え、約2.5mmの厚さを有するゴムスラブを得る。ゴムスラブは、硬化のために金型(サイズ:140mm×140mm×2mm)に入れられ、約2mmの厚さを有するゴム層を得た。各ゴム層(R1~R4)の組成を表1に示す。略語「R」は「ゴム層」を表し、その後にゴム層がどの組成物で調製されているかを示す数字が続く。
各発泡体層に使用される原材料(表2に記載)を配合してEVA化合物を得た後、約175℃で約460秒間、EVA化合物をファイロン機(King Steel製靴製造機、型番KS-C901ULY1)の密閉金型(サイズ:185mm×120mm×10mm)に保持し、金型を開いて約30~60℃で約30分間冷却し、約12mmの厚さおよび約150%~160%の膨張率を有する発泡体層を得た。各発泡体層の組成物(F1~F3)を表2に示す。略語「F」は「発泡体層」を表し、その後に発泡体層がどの組成物で調製されるかを示す数字が続く。また、各発泡体層のカルボキシル基またはグリシジルメタクリレート基の量を表2に示した。
エタノールおよび水を使用して各ゴム層および発泡体層を洗浄し、室温で乾燥させた。金属フレーム金型(サイズ:200mm×200mm×6mm)をホットプレスした。剥離紙を金型の底部に配置して、ホットプレス後に金型から調製された複合材料を最終的に除去しやすくし、発泡体層およびゴム層を剥離紙上に連続的に配置して組み立てを行い、2番目の剥離紙を組立品の上部に置き、金型を閉じて、約160℃で約6分間、ホットプレス機で約10MPaの圧力でホットプレスした。ホットプレスの後、金型をホットプレス機から取り出し、複合材料を金型から除去し、周囲温度まで冷却した。実施例および比較例における複合材料の組成を表3に示す。本明細書で複合材料の組成を説明するために使用する場合、「/」は、各特有の層をその中の隣接層(複数可)と分けるために使用される。したがって、本複合材料の組成は、「R/F」と表され得る。
各サンプルをカットして、3つの試験片(すなわち、100.0mm×25.4mmの長方形)を得た。各試験片をInstron(商標登録)材料試験機(Instron(商標登録)社製、型番5567)のサンプルホルダーに固定した。180℃剥離強度は、12インチ(104.8mm)/分のクロスヘッド速度および1kNの負荷で測定された。3つの試験片の剥離強度の平均値を、N/mm単位で剥離強度として記録し、表3に記載した。
(a)硬化ゴムと、カルボキシル基を有する第1のコポリマーとを含むゴム層と、
(b)架橋エチレンビニルアセテートを含む発泡体層と、を含み、
発泡体層は、ゴム層に直接接着する少なくとも1つの表面を有し、複合材料は、ゴム層と発泡体層との間の界面に接合剤または接着フィルムを含まない。
(a)硬化ゴムを含むゴム層と、
(b)架橋エチレンビニルアセテートとカルボキシル基を有する第2のコポリマーとを含む発泡体層と、を含み、
発泡体層が、ゴム層に直接接着する少なくとも1つの表面を有し、複合材料が、ゴム層と発泡体層との間の界面に接合剤または接着フィルムを含まない。
(a)硬化ゴムと、カルボキシル基を有する第1のコポリマーとを含むゴム層と、
(b)架橋エチレンビニルアセートとカルボキシル基を有する第2のコポリマーとを含む発泡体層と、を含み、
発泡体層が、ゴム層に直接接着する少なくとも1つの表面を有し、複合材料が、ゴム層と発泡体層との間の界面に接合剤または接着フィルムを含まない。
(a)硬化ゴムを含むゴム層と、
(b)架橋エチレンビニルアセテートと、任意にグリシジルメタクリレート基を有する第2のコポリマーとを含む発泡体層と、を含み、
発泡体層が、ゴム層に直接接着する少なくとも1つの表面を有し、複合材料が、ゴム層と発泡体層との間の界面に接合剤または接着フィルムを含まない。
(a)硬化ゴムと、カルボキシル基を有する第1のコポリマーとを含むゴム層と、
(b)架橋エチレンビニルアセートと、任意にグリシジルメタクリレート基を有する第2のコポリマーとを含む発泡体層と、を含み、
発泡体層が、ゴム層に直接接着する少なくとも1つの表面を有し、複合材料が、ゴム層と発泡体層との間の界面に接合剤または接着フィルムを含まない。
可能性がある。
なお、本発明は以下の態様を含みうる。
[1]複合材料であって、
(a)硬化ゴムと、任意にカルボキシル基または無水物基を有する第1のコポリマーとを含むゴム層と、
(b)架橋エチレンビニルアセテートと、任意にカルボキシル基またはグリシジルメタクリレート基を有する第2のコポリマーとを含む発泡体層と、を含み、
前記発泡体層は、前記ゴム層に直接接着する少なくとも1つの表面を有し、ただし、前記第1のコポリマーまたは前記第2のコポリマーのいずれかが存在し、前記複合材料が、前記ゴム層と前記発泡体層との間の界面に接合剤または接着フィルムを含まない、複合材料。
[2]前記第1のコポリマー中の前記カルボキシル基の量が、約0.05~1重量%であり、前記第1のコポリマー中の前記無水物基の量が、約0.025~1重量%であり、前記重量%が、前記ゴム層の総重量に基づく、上記[1]に記載の複合材料。
[3]前記第2のコポリマー中の前記カルボキシル基の量が、約0.05~1重量%であり、前記第2のコポリマー中の前記グリシジルメタクリレート基の量が、約0.15~3重量%であり、前記重量%が、前記発泡体層の総重量に基づく、上記[1]に記載の複合材料。
[4]カルボキシル基を有する前記第1のコポリマーが、エチレン-マレイン酸モノエチルエステルコポリマー、エチレン-アクリル酸コポリマー、およびエチレン-メタクリル酸コポリマー、ならびにそれらの混合物からなる群から選択される、上記[1]に記載の複合材料。
[5]無水物基を有する前記第1のコポリマーが、プロピレン-無水マレイン酸コポリマー、スチレン-無水マレイン酸コポリマー、スチレン-メタクリル酸メチル-無水マレイン酸ターポリマー、無水マレイン酸グラフトポリエチレン、無水マレイン酸グラフトポリプロピレン、無水マレイン酸グラフトエチレンビニルアセテートコポリマー、および無水マレイン酸グラフトエチレン-アルキルアクリレートコポリマー、ならびにそれらの混合物からなる群から選択される、上記[1]に記載の複合材料。
[6]カルボキシル基を有する前記第2のコポリマーが、エチレン-マレイン酸モノエチルエステルコポリマー、エチレン-アクリル酸コポリマー、およびエチレン-メタクリル酸コポリマー、ならびにそれらの混合物からなる群から選択される、上記[1]に記載の複合材料。
[7]グリシジルメタクリレート基を有する前記第2のコポリマーが、エチレン-グリシジルメタクリレートコポリマー、エチレン-ビニルアセテート-グリシジルメタクリレートコポリマー、エチレン-ブチルアクリレート-グリシジルメタクリレートコポリマー、およびそれらの混合物からなる群から選択される、上記[1]に記載の複合材料。
[8]上記[1]~[7]のいずれかに記載の複合材料を含むか、またはそれから製造される物品。
[9]履物のソール、カーペット、ヨガマット、音響パネル、クッションボードとして使用される、上記[8]に記載の物品。
[10]上記[1]~[7]のいずれかに記載の複合材料を調製する方法であって、
(1)ゴムと、硬化剤と、任意にカルボキシル基または無水物基を有する第1のコポリマーとを含む混合物を硬化させてゴム層を得ることと、
(2)エチレンビニルアセテートと、架橋剤と、発泡剤と、任意にカルボキシル基またはグリシジルメタクリレート基を有する第2のコポリマーとを含む混合物を発泡させて発泡体層を得ることと、
(3)前記ゴム層を前記発泡体層の少なくとも1つの表面に配置して組立品を得て、前記組立品をホットプレスして前記複合材料を得ることと、を含む、方法。
Claims (9)
- 複合材料であって、
(a)硬化ゴムと、任意にカルボキシル基または無水物基を有する第1のコポリマーとを含むゴム層と、
(b)架橋エチレンビニルアセテートと、任意にカルボキシル基またはグリシジルメタクリレート基を有する第2のコポリマーとを含む発泡体層と、を含み、
前記第1のコポリマー中の前記カルボキシル基の量が、0.05~1重量%であり、前記第1のコポリマー中の前記無水物基の量が、0.025~1重量%であり、前記重量%が、前記ゴム層の総重量に基づき、
前記発泡体層は、前記ゴム層に直接接着する少なくとも1つの表面を有し、
ただし、前記第1のコポリマーまたは前記第2のコポリマーのいずれかが存在し、前記複合材料が、前記ゴム層と前記発泡体層との間の界面に接合剤または接着フィルムを含まない、複合材料。 - 前記第2のコポリマー中の前記カルボキシル基の量が、0.05~1重量%であり、前記第2のコポリマー中の前記グリシジルメタクリレート基の量が、0.15~3重量%であり、前記重量%が、前記発泡体層の総重量に基づく、請求項1に記載の複合材料。
- カルボキシル基を有する前記第1のコポリマーが、エチレン-マレイン酸モノエチルエステルコポリマー、エチレン-アクリル酸コポリマー、およびエチレン-メタクリル酸コポリマー、ならびにそれらの混合物からなる群から選択される、請求項1または2に記載の複合材料。
- 無水物基を有する前記第1のコポリマーが、プロピレン-無水マレイン酸コポリマー、スチレン-無水マレイン酸コポリマー、スチレン-メタクリル酸メチル-無水マレイン酸ターポリマー、無水マレイン酸グラフトポリエチレン、無水マレイン酸グラフトポリプロピレン、無水マレイン酸グラフトエチレンビニルアセテートコポリマー、および無水マレイン酸グラフトエチレン-アルキルアクリレートコポリマー、ならびにそれらの混合物からなる群から選択される、請求項1または2に記載の複合材料。
- カルボキシル基を有する前記第2のコポリマーが、エチレン-マレイン酸モノエチルエステルコポリマー、エチレン-アクリル酸コポリマー、およびエチレン-メタクリル酸コポリマー、ならびにそれらの混合物からなる群から選択される、請求項1~4のいずれか1項に記載の複合材料。
- グリシジルメタクリレート基を有する前記第2のコポリマーが、エチレン-グリシジルメタクリレートコポリマー、エチレン-ビニルアセテート-グリシジルメタクリレートコポリマー、エチレン-ブチルアクリレート-グリシジルメタクリレートコポリマー、およびそれらの混合物からなる群から選択される、請求項1~4のいずれか1項に記載の複合材料。
- 請求項1~6のいずれか1項に記載の複合材料を含むか、またはそれから製造される物品。
- 履物のソール、カーペット、ヨガマット、音響パネル、クッションボードとして使用される、請求項7に記載の物品。
- 請求項1~6のいずれか1項に記載の複合材料を調製する方法であって、
(1)ゴムと、硬化剤と、任意にカルボキシル基または無水物基を有する第1のコポリマーとを含む混合物を硬化させてゴム層を得ることと、
(2)エチレンビニルアセテートと、架橋剤と、発泡剤と、任意にカルボキシル基またはグリシジルメタクリレート基を有する第2のコポリマーとを含む混合物を発泡させて発泡体層を得ることと、
(3)前記ゴム層を前記発泡体層の少なくとも1つの表面に配置して組立品を得て、前記組立品をホットプレスして前記複合材料を得ることと、を含む、方法。
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| DE3031792C2 (de) | 1980-08-22 | 1984-05-30 | Metzeler Kautschuk GmbH, 8000 München | Verfahren zur Herstellung eines mikroporösen Schaum-Formkörpers |
| US4418483A (en) * | 1981-03-31 | 1983-12-06 | Rinzai Co., Ltd. | Method of manufacturing shoe sole material and shoes products made by the same |
| JPS6232129A (ja) * | 1985-08-05 | 1987-02-12 | Japan Synthetic Rubber Co Ltd | エチレン−酢酸ビニル共重合体系架橋発泡体用組成物 |
| US6528550B1 (en) | 1999-07-01 | 2003-03-04 | E. I. Du Pont De Nemours And Company | Crosslinked foam of ethylene vinyl acetate copolymer and acid copolymer |
| JP4243486B2 (ja) * | 2001-02-23 | 2009-03-25 | ファット クッション リミテッド ライアビリティ カンパニー | フォームクッションならびにその製造方法および使用方法 |
| WO2012169483A1 (ja) * | 2011-06-10 | 2012-12-13 | 住友化学株式会社 | 積層構造の製造方法 |
| CN103304882B (zh) | 2012-03-07 | 2015-05-13 | 杜邦公司 | 注塑鞋底 |
| CN202624104U (zh) * | 2012-06-18 | 2012-12-26 | 南京佩尔哲汽车内饰系统有限公司 | 一种汽车前壁板隔音隔热垫 |
| WO2017077764A1 (ja) * | 2015-11-06 | 2017-05-11 | バンドー化学株式会社 | 発泡成形品の製造方法及び発泡成形品 |
| CN205390515U (zh) * | 2016-03-22 | 2016-07-27 | 王铁利 | 一种橡胶鞋底 |
| KR102659023B1 (ko) * | 2016-09-29 | 2024-04-22 | 다우 글로벌 테크놀로지스 엘엘씨 | 포옴용 블렌드, 이로부터 제조된 포옴 및 이를 포함하는 물품 |
-
2017
- 2017-06-26 CN CN201780093724.7A patent/CN111212731B/zh active Active
- 2017-06-26 US US16/624,227 patent/US11691395B2/en active Active
- 2017-06-26 EP EP17915221.0A patent/EP3645280B1/en active Active
- 2017-06-26 JP JP2019571348A patent/JP7013494B2/ja active Active
- 2017-06-26 WO PCT/CN2017/089956 patent/WO2019000155A1/en not_active Ceased
- 2017-06-26 BR BR112019027460-0A patent/BR112019027460B1/pt active IP Right Grant
- 2017-06-26 KR KR1020207001022A patent/KR102458609B1/ko active Active
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|---|---|
| EP3645280A1 (en) | 2020-05-06 |
| BR112019027460A2 (pt) | 2020-07-07 |
| BR112019027460B1 (pt) | 2022-12-27 |
| KR102458609B1 (ko) | 2022-10-26 |
| US11691395B2 (en) | 2023-07-04 |
| EP3645280B1 (en) | 2024-02-14 |
| EP3645280A4 (en) | 2021-01-27 |
| CN111212731B (zh) | 2022-06-21 |
| KR20200035258A (ko) | 2020-04-02 |
| WO2019000155A1 (en) | 2019-01-03 |
| JP2020530818A (ja) | 2020-10-29 |
| CN111212731A (zh) | 2020-05-29 |
| US20210146661A1 (en) | 2021-05-20 |
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