JP6501637B2 - 加硫ゴムの測定方法 - Google Patents
加硫ゴムの測定方法 Download PDFInfo
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- JP6501637B2 JP6501637B2 JP2015117654A JP2015117654A JP6501637B2 JP 6501637 B2 JP6501637 B2 JP 6501637B2 JP 2015117654 A JP2015117654 A JP 2015117654A JP 2015117654 A JP2015117654 A JP 2015117654A JP 6501637 B2 JP6501637 B2 JP 6501637B2
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- Prior art keywords
- vulcanized rubber
- nmr
- rubber
- sulfur
- qcpmg
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- 238000000034 method Methods 0.000 title claims description 77
- 239000004636 vulcanized rubber Substances 0.000 title claims description 46
- 238000005481 NMR spectroscopy Methods 0.000 claims description 41
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 25
- 229910052717 sulfur Inorganic materials 0.000 claims description 25
- 239000011593 sulfur Substances 0.000 claims description 25
- 239000007787 solid Substances 0.000 claims description 20
- 238000001228 spectrum Methods 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 9
- 238000000371 solid-state nuclear magnetic resonance spectroscopy Methods 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 description 17
- 239000005060 rubber Substances 0.000 description 17
- 238000005259 measurement Methods 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 10
- 239000000203 mixture Substances 0.000 description 10
- 230000035945 sensitivity Effects 0.000 description 10
- 238000005004 MAS NMR spectroscopy Methods 0.000 description 8
- 239000000523 sample Substances 0.000 description 7
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 description 5
- 244000043261 Hevea brasiliensis Species 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229920003052 natural elastomer Polymers 0.000 description 4
- 229920001194 natural rubber Polymers 0.000 description 4
- 238000004073 vulcanization Methods 0.000 description 4
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 229920003244 diene elastomer Polymers 0.000 description 3
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 229920005549 butyl rubber Polymers 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 238000000655 nuclear magnetic resonance spectrum Methods 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000001924 quadrupole Carr-Purcell-Meiboom-Gill using magic-angle spinning Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000000346 sulfur-33 nuclear magnetic resonance spectrum Methods 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 1
- 238000004922 13C solid-state nuclear magnetic resonance spectroscopy Methods 0.000 description 1
- 238000005160 1H NMR spectroscopy Methods 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229920003049 isoprene rubber Polymers 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000523 multiple-quantum excitation in combination with magic angle spinning Methods 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- NINIDFKCEFEMDL-OUBTZVSYSA-N sulfur-33 atom Chemical compound [33S] NINIDFKCEFEMDL-OUBTZVSYSA-N 0.000 description 1
- 125000000101 thioether group Chemical group 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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- Compositions Of Macromolecular Compounds (AREA)
Description
バンバリーミキサーを使用し、下記表1に示す配合(質量部)に従い、ジエン系ゴムに亜鉛華、ステアリン酸、硫黄及び加硫促進剤を添加し混練して、未加硫ゴム組成物を調製した。得られた未加硫ゴム組成物を160℃で30分間加硫することにより加硫ゴムを得た。得られた加硫ゴムを測定試料として、下記測定方法の33S−NMR測定により加硫ゴムの33S−NMRスペクトルを得た。測定には、NMR装置としてBruker社製AVANCE III HD400(1H共鳴周波数:400MHz)を用い、使用プローブをBruker社製4mmMAS BL4 VTN低周波対応プローブとし、33S共鳴周波数を30.706MHzとし、測定温度を25℃とし、標準物質を二硫化炭素(0ppm)として実施した。加硫ゴムのスペクトルの測定は、QCPMG法(実施例1〜3)については配合1〜3のすべてを測定対象とし、シングルパルス法(比較例1)とスピンエコー法(比較例2)については配合1を測定対象とした。
・パルス系列:QCPMG
・MAS速度:8000Hz
・遅延時間τ1:0.87ms
・π/2パルス持続時間τπ/2:4.0ms
・検出時間τa:1.00ms
・遅延時間τ2:0.80ms
・πパルス持続時間τπ:8.0ms
・工程Bの繰り返し回数M:14回
・遅延時間τd:0.5ms
・パルス系列:シングルパルス
・MAS速度:8000Hz
・π/2パルス持続時間τπ/2:4.0ms
・パルス系列:スピンエコー
・MAS速度:8000Hz
・π/2パルス持続時間τπ/2:4.0ms
実施例1において、QCPMG法の測定条件におけるτaを0.05ms、0.1ms、1.0ms、3.0ms、4.0msと変更し、その他は実施例1と同様にして、33S−NMR測定を行った。各測定により得られた33S−NMRスペクトルを図6に示す。図6(A)に示すτa=0.05msの場合、及び図6(E)に示すτa=4.0msの場合、感度が低く、33Sのシグナルは観測されなかった。これに対し、図6(B)〜(D)に示すτa=0.1ms,1.0ms,3.0msの場合、感度の向上が認められ、−200〜−400ppmの間に33Sのシグナルが観測された。特に、図6(C)に示すτa=1.0msの場合と図6(D)に示すτa=3.0msの場合に、より明確な33Sのシグナルが観測された。
Claims (2)
- 硫黄で加硫された加硫ゴムを固体高分解能NMR法により測定する方法であって、QCPMG(四極子カー・パーセル・メイブーム・ギル)法を用いた固体高分解能33S−NMR法により33Sに由来するシグナルを持つ加硫ゴムのスペクトルを得ることを特徴する加硫ゴムの測定方法。
- 前記QCPMG法において、πパルスの照射とエコー信号の検出を繰り返す工程での前記エコー信号の検出時間τaを0.1〜3.0msの範囲内に設定する、請求項1記載の加硫ゴムの測定方法。
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AU4836396A (en) * | 1995-02-24 | 1996-09-11 | British Technology Group Limited | Method of and apparatus for nuclear quadrupole resonance testing a sample, and pulse sequence for exciting nuclear quadrupole resonance |
JP2001249091A (ja) * | 2000-03-07 | 2001-09-14 | Mitsuboshi Belting Ltd | ゴムベルトの耐久寿命推定方法 |
JP2003102698A (ja) * | 2001-09-28 | 2003-04-08 | Nihon Medi Physics Co Ltd | 核磁気共鳴画像診断剤 |
JP4795047B2 (ja) * | 2006-02-15 | 2011-10-19 | 住友ゴム工業株式会社 | ゴム試料引張治具、伸長状態のゴム試料の分子構造・分子運動性分析装置ならびに分析方法 |
JP5212972B2 (ja) * | 2007-12-28 | 2013-06-19 | 学校法人慶應義塾 | 計測装置および計測方法 |
JP2012173093A (ja) * | 2011-02-21 | 2012-09-10 | Bridgestone Corp | ゴム材料の検査方法 |
JP2012246208A (ja) * | 2011-05-25 | 2012-12-13 | Si Science Co Ltd | 肥料組成物およびその使用方法並びに得られる生物 |
JP5603357B2 (ja) * | 2012-02-08 | 2014-10-08 | 住友ゴム工業株式会社 | シリカと変性ポリマーの界面結合の強さを定量化する方法及びその方法を用いて適正化したゴム組成物、及びそれを用いた空気入りタイヤ |
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