JP2014205750A - 防舷材用ゴム組成物および防舷材 - Google Patents
防舷材用ゴム組成物および防舷材 Download PDFInfo
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- JP2014205750A JP2014205750A JP2013083197A JP2013083197A JP2014205750A JP 2014205750 A JP2014205750 A JP 2014205750A JP 2013083197 A JP2013083197 A JP 2013083197A JP 2013083197 A JP2013083197 A JP 2013083197A JP 2014205750 A JP2014205750 A JP 2014205750A
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- FBBATURSCRIBHN-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyldisulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSCCC[Si](OCC)(OCC)OCC FBBATURSCRIBHN-UHFFFAOYSA-N 0.000 description 1
- KLFNHRIZTXWZHT-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyltrisulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSSCCC[Si](OCC)(OCC)OCC KLFNHRIZTXWZHT-UHFFFAOYSA-N 0.000 description 1
- QPPXVBLDIDEHBA-UHFFFAOYSA-N trimethoxy(3-nitropropyl)silane Chemical compound CO[Si](OC)(OC)CCC[N+]([O-])=O QPPXVBLDIDEHBA-UHFFFAOYSA-N 0.000 description 1
- JTTSZDBCLAKKAY-UHFFFAOYSA-N trimethoxy-[3-(3-trimethoxysilylpropyltetrasulfanyl)propyl]silane Chemical compound CO[Si](OC)(OC)CCCSSSSCCC[Si](OC)(OC)OC JTTSZDBCLAKKAY-UHFFFAOYSA-N 0.000 description 1
- KOFGNZOFJYBHIN-UHFFFAOYSA-N trimethoxy-[3-(3-trimethoxysilylpropyltrisulfanyl)propyl]silane Chemical compound CO[Si](OC)(OC)CCCSSSCCC[Si](OC)(OC)OC KOFGNZOFJYBHIN-UHFFFAOYSA-N 0.000 description 1
- 239000001052 yellow pigment Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 239000011667 zinc carbonate Substances 0.000 description 1
- 229910000010 zinc carbonate Inorganic materials 0.000 description 1
- 235000004416 zinc carbonate Nutrition 0.000 description 1
- BOXSVZNGTQTENJ-UHFFFAOYSA-L zinc dibutyldithiocarbamate Chemical compound [Zn+2].CCCCN(C([S-])=S)CCCC.CCCCN(C([S-])=S)CCCC BOXSVZNGTQTENJ-UHFFFAOYSA-L 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
- NDKWCCLKSWNDBG-UHFFFAOYSA-N zinc;dioxido(dioxo)chromium Chemical compound [Zn+2].[O-][Cr]([O-])(=O)=O NDKWCCLKSWNDBG-UHFFFAOYSA-N 0.000 description 1
- KMNUDJAXRXUZQS-UHFFFAOYSA-L zinc;n-ethyl-n-phenylcarbamodithioate Chemical compound [Zn+2].CCN(C([S-])=S)C1=CC=CC=C1.CCN(C([S-])=S)C1=CC=CC=C1 KMNUDJAXRXUZQS-UHFFFAOYSA-L 0.000 description 1
- DUBNHZYBDBBJHD-UHFFFAOYSA-L ziram Chemical compound [Zn+2].CN(C)C([S-])=S.CN(C)C([S-])=S DUBNHZYBDBBJHD-UHFFFAOYSA-L 0.000 description 1
Images
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
(1) 天然ゴムを40質量%以上95質量%以下と、エチレン−プロピレン−ジエン共重合体ゴムを5質量%以上60質量%以下と、ブタジエンゴムを10質量%以上55質量%以下とを含有するゴム成分100質量部と、
シリカを前記ゴム成分100質量部に対して30質量部以上70質量部未満含有することを特徴とする防舷材用ゴム組成物。
(2) さらに、カーボンブラックを含有し、前記カーボンブラックの含有量が、前記ゴム成分100質量部に対して5質量部以下である上記(1)に記載の防舷材用ゴム組成物。
(3) 船舶または岸壁と接する部分が、上記(1)または(2)に記載の防舷材用ゴム組成物を用いて形成されることを特徴とする防舷材。
(4) 色が、白色、黄色、灰色および橙色からなる群から選ばれる少なくとも1種である上記(3)に記載の防舷材。
本実施形態に係る防舷材用ゴム組成物(以下、「本実施形態の組成物」という。)は、天然ゴムとエチレン−プロピレン−ジエン共重合体ゴムとブタジエンゴムとを含むゴム成分と、シリカとを含んでいる。
本実施形態の組成物に含有される、天然ゴム(NR)、エチレン−プロピレン−ジエン共重合体ゴム(EPDM)およびブタジエンゴム(BR)以外のゴム成分としては、防舷材に使用できるものであれば特に制限されない。例えば、合成ゴム、または天然ゴムと合成ゴムとの混合物等であり、例えば、ジエン系ゴム等を好適に挙げることができる。ジエン系ゴムとしては、具体的には、例えば、イソプレンゴム(IR)、各種スチレン−ブタジエン共重合体ゴム(SBR)、アクリロニトリル−ブタジエン共重合体ゴム(NBR)、クロロプレンゴム(CR)、ブチルゴム(IIR)、スチレン−イソプレン共重合体ゴム、スチレン−イソプレン−ブタジエン共重合体ゴム、イソプレン−ブタジエン共重合体ゴム等を挙げることができる。また、例えば、エチレン−プロピレン共重合体ゴム、クロロスルホン化ポリエチレン、アクリルゴム、エピクロルヒドリンゴム、シリコーンゴム等を挙げることができる。これらのゴム成分は、1種類を単独でまたは2種類以上を組み合わせて用いることができる。
本実施形態の組成物に含有されるシリカは、ゴム組成物に使用できるものであれば特に制限されない。具体的には、例えば、天然シリカ、合成シリカ、乾式シリカ、湿式シリカ等が挙げられる。なかでも、分散性と耐摩耗性とのバランスに優れるという観点から、平均凝集粒径が5μm〜50μmのものが好ましい。シリカは、それぞれ単独でまたは2種以上を組み合わせて使用することができる。
本実施形態の組成物は、さらにカーボンブラックを含有することが好ましい。カーボンブラックを含有することにより、本実施形態の組成物を用いて形成される防舷材は灰色の色物防舷材とすることができる。すなわち、カーボンブラックは着色剤としての作用を有する。
スルフィド等が挙げられる。
次に、本実施形態の組成物を防舷材に用いた場合について説明する。本実施形態に係る防舷材(以下、「本実施形態の防舷材」という。)は、船舶または岸壁と接する部分が、本実施形態の防舷材用ゴム組成物を用いて形成されるものである。
図1は、本実施形態に係る防舷材の一例を模式的に示す断面図である。図1に示すように、空気式防舷材10は、空気式防舷材10の本体12と、金具14、16とを有している。金具14、16は、例えば、エアバルブ、安全弁、吊具取付部(いずれも図示せず。)を有することができる。空気式防舷材10の内部(図示せず。)には例えば、空気等のガス、液体が充填され、空気式防舷材10は弾力性を有する。
図3は、本実施形態に係る防舷材の一例を模式的に示す断面図である。図3に示すように、ソリッド式防舷材30は、ソリッド式防舷材30の本体32と、金具34、36とを有する。ソリッド式防舷材30は、金具34、36によって船舶または岸壁に固定される。
表1に示す各成分のうち硫黄および加硫促進剤以外の各成分を、同表に示す配合量(質量部)で配合し、1.5リットルの密閉型ミキサーを用いて5分間、60℃の条件下で混練し、これに表1に示す硫黄および加硫促進剤を同表に示す量で添加してオープンロールで混合して表1に示される各々の実施例、比較例の各ゴム組成物を調製した。
上記で得られた各ゴム組成物を15×15×0.2cmの金型内で150℃で30分間加硫して、シート状の加硫ゴム(厚さ2mm)を得た。
上記で得られた各加硫ゴムからダンベル3号形の試験片を打ち抜き、JIS K6251:2010に準じて500mm/分の引張速度にて引張強度を測定した。引張強度が18MPa以上である場合に良好と評価した。結果を表1に示す。
アクロン摩耗試験は、JIS K6264−2:2005に準じ、A法により円盤状試験片を用い、室温(23℃)で、27.0Nの付加力を与え、傾角15°、本試験運転の回転数1,000回、試験片回転速度75rpmで行い、1,000回転当りの摩耗体積(ml)を求めた。摩耗体積が0.15ml以下である場合に良好と評価した。結果を表1に示す。
上記で得られた各加硫ゴムから短冊状の試験片を打ち抜き、JIS K6259:2004に準じて、試験片を伸長ひずみ20%、オゾン濃度100pphm、温度40℃の条件下に168時間置き、168時間後に試験片の外観を目視で確認した。耐オゾン性の評価基準は、試験片に亀裂が発生しなかった場合を○と評価し、3mm以上の亀裂が多数発生した場合を×と評価した。結果を表1に示す。
上記で得られた各加硫ゴムから短冊状の試験片を打ち抜き、JIS K6259:2004に準じて、試験片を伸長ひずみ20%、オゾン濃度50pphm、温度0℃の条件下に168時間置き、168時間後に試験片の表面を目視で確認した。耐低温オゾン性の評価基準は、試験片に亀裂が発生しなかった場合を○と評価し、3mm以上の亀裂が多数発生した場合を×と評価した。結果を表1に示す。
・天然ゴム:商品名「TSR−20」、THAITECH RUBBER Co.Ltd社製
・エチレン−プロピレン−ジエン共重合体ゴム:商品名「エスプレン505A」、住友化学社製
・ブタジエンゴム:商品名「Nipol BR 1220L」、日本ゼオン社製
・着色剤:HAFカーボンブラック、商品名「シースト300」、東海カーボン社製
・シリカ:商品名「ニップシールVN3」、東ソー・シリカ社製
・ZnO:商品名「亜鉛華3号」、正同化学工業社製
・ステアリン酸:商品名「ビーズステアリン酸」、日本油脂社製
・老化防止剤:商品名「SANTOFLEX6PPD」、フレキシス社製
・パラフィンワックス:商品名「サンノック」、大内新興化学工業社製
・酸化チタン:商品名「タイペークR−820」、石原産業社製
・シランカップリング剤:商品名「Si69」、Degussa社製
・パラフィン系オイル:商品名「マシン油22」、昭和シェル石油社製
・硫黄:粉末硫黄、軽井沢精錬所社製
・加硫促進剤:N−シクロヘキシル−2−ベンゾチアゾリルスルフェンアミド、商品名「サンセラーCM−PO」、三新化学工業社製
・加硫遅延剤:商品名「PILGARD」、NOCIL LIMITED社製
12 本体
14、16 金具
20 最外層
22 ゴム内層
24 補強層
30 ソリッド式防舷材
32 本体
34、36 金具
Claims (4)
- 天然ゴムを40質量%以上95質量%以下と、エチレン−プロピレン−ジエン共重合体ゴムを5質量%以上60質量%以下と、ブタジエンゴムを10質量%以上55質量%以下とを含有するゴム成分100質量部と、
シリカを前記ゴム成分100質量部に対して30質量部以上70質量部未満含有することを特徴とする防舷材用ゴム組成物。 - さらに、カーボンブラックを含有し、前記カーボンブラックの含有量が、前記ゴム成分100質量部に対して5質量部以下である請求項1に記載の防舷材用ゴム組成物。
- 船舶または岸壁と接する部分が、請求項1または2に記載の防舷材用ゴム組成物を用いて形成されることを特徴とする防舷材。
- 色が、白色、黄色、灰色および橙色からなる群から選ばれる少なくとも1種である請求項3に記載の防舷材。
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Citations (3)
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JPS495607B1 (ja) * | 1969-07-17 | 1974-02-08 | ||
JP2008179656A (ja) * | 2007-01-23 | 2008-08-07 | Yokohama Rubber Co Ltd:The | 防舷材用ゴム組成物および防舷材 |
JP2008201841A (ja) * | 2007-02-16 | 2008-09-04 | Yokohama Rubber Co Ltd:The | 応急用空気入りタイヤ |
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JPS495607B1 (ja) * | 1969-07-17 | 1974-02-08 | ||
JP2008179656A (ja) * | 2007-01-23 | 2008-08-07 | Yokohama Rubber Co Ltd:The | 防舷材用ゴム組成物および防舷材 |
JP2008201841A (ja) * | 2007-02-16 | 2008-09-04 | Yokohama Rubber Co Ltd:The | 応急用空気入りタイヤ |
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KR102829500B1 (ko) * | 2024-05-02 | 2025-07-09 | (주)화승코퍼레이션 | 선박 방충재용 고무 조성물 |
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