白炭黑在天然橡胶/丁苯橡胶并用胶中偏析现象的定量表征
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摘要
借助介电松弛谱、红外光谱、动态力学热分析方法探讨白炭黑在天然橡胶(NR)/丁苯橡胶(SBR)并用胶中的偏析行为,并对其进行定量表征。研究结果表明,白炭黑均向NR相偏移,且不依赖于胶料的并用比。分析认为,这种偏析行为不仅与填料-橡胶相互作用相关,还与白炭黑聚集体在各橡胶相中形成具有不同尺度的填料网络结构相关;对其硫化胶进行研究发现,白炭黑仍向NR相偏移,且硫化前后偏移程度不同,说明硫化过程对白炭黑在并用橡胶相间的偏析行为有显著的影响。
The segregation behavior of silica in natural rubber(NR)/styrene butadiene rubber(SBR) blends was investigated by dielectric relaxation spectrum, Fourier transform infrared spectrum and dynamic mechanical analysis. And it was detected quantitatively. The results show that the silica is easy to locate at NR phase. It is independent on the ratio between NR and SBR. The segregation behavior is not only related to filler-polymer interaction, but also relates to silica network structure with different sizes, which are formed in different rubber phases. The results for silica filled NR/SBR vulcanizates with different ratios between NR and SBR show that the silica is still easy to locate at NR phase. The quantitative results between compounds and vulcanizates are different, which indicate that the vulcanization process has a significant effect on the filler segregation behavior.
The segregation behavior of silica in natural rubber(NR)/styrene butadiene rubber(SBR) blends was investigated by dielectric relaxation spectrum, Fourier transform infrared spectrum and dynamic mechanical analysis. And it was detected quantitatively. The results show that the silica is easy to locate at NR phase. It is independent on the ratio between NR and SBR. The segregation behavior is not only related to filler-polymer interaction, but also relates to silica network structure with different sizes, which are formed in different rubber phases. The results for silica filled NR/SBR vulcanizates with different ratios between NR and SBR show that the silica is still easy to locate at NR phase. The quantitative results between compounds and vulcanizates are different, which indicate that the vulcanization process has a significant effect on the filler segregation behavior.
引文
[1] 那洪东. 炭黑在混炼胶中的分散机理[J]. 世界橡胶工业, 2012, 39(10): 21-27.Na H D. Dispersion mechanism of carbon black in rubber compound[J]. Rubber Industry of World, 2012, 39(10): 21-27.
[2] Jeon I H, Kim H, Kim S G. Characterization of rubber micro-morphology by atomic force microscopy (AFM) [J]. Rubber Chem. Technol., 2003, 76: 1-11.
[3] Marina K, Hidehiko D, Hideaki K,et al.Characterization of carbon filler distribution ratio in polyisoprene/polybutadiene rubber blends by high-resolution solid-state 13C-NMR[J].Macromolecules, 2007, 40: 9451-9454.
[4] Chakrit S, Nootjaree P.Study of carbon black distribution in BR/NBR blends based on damping properties:influences of carbon black particle size,filler,and rubber polarity[J].J. Appl. Polym. Sci., 2001, 81: 3198-3203.
[5] 陈坤, 吴驰飞. 混炼工艺对白炭黑补强NR/BR并用胶性能的影响[J]. 橡胶工业, 2009, 56(1): 29-32.Chen K, Wu C F. The influence of blending process on the properties of silica reinforced NR/BR blends[J]. Rubber Industry, 2009, 56(1): 29-32.
[6] 吴云峰, 许海燕. 结合橡胶对SBR/BR并用胶界面相互作用的影响[J]. 橡胶工业, 2010, 57(2): 98-101.Wu Y F, Xu H Y.The effect of combined rubber on the interface interaction of SBR/BR blends[J].Rubber Industry, 2010, 57(2): 98-101.
[7] Le H H, Oβwald K, Ilisch S, et al. Silica transfer in ternary rubber blends: calculation and experimental determination[J]. Macromol. Mater. Eng., 2012, 297: 464-473.
[8] Phewphong P, Saeoui P.The use of dynamic mechanical thermal analysis technique for determining an uneven distribution of precipitated silica in CPE/NR blends[J].Polym. Test., 2008, 27: 873-880.
[9] Le H H, Ilisch S.Kinetics of the phase selective localization of silica in rubber blends[J]. Polym. Compos., 2010, 10: 1701-1711.
[10] 黄静. 三元共混橡胶中填料的相选择分布[J]. 橡胶参考资料, 2014(1): 16-22.
[2] Jeon I H, Kim H, Kim S G. Characterization of rubber micro-morphology by atomic force microscopy (AFM) [J]. Rubber Chem. Technol., 2003, 76: 1-11.
[3] Marina K, Hidehiko D, Hideaki K,et al.Characterization of carbon filler distribution ratio in polyisoprene/polybutadiene rubber blends by high-resolution solid-state 13C-NMR[J].Macromolecules, 2007, 40: 9451-9454.
[4] Chakrit S, Nootjaree P.Study of carbon black distribution in BR/NBR blends based on damping properties:influences of carbon black particle size,filler,and rubber polarity[J].J. Appl. Polym. Sci., 2001, 81: 3198-3203.
[5] 陈坤, 吴驰飞. 混炼工艺对白炭黑补强NR/BR并用胶性能的影响[J]. 橡胶工业, 2009, 56(1): 29-32.Chen K, Wu C F. The influence of blending process on the properties of silica reinforced NR/BR blends[J]. Rubber Industry, 2009, 56(1): 29-32.
[6] 吴云峰, 许海燕. 结合橡胶对SBR/BR并用胶界面相互作用的影响[J]. 橡胶工业, 2010, 57(2): 98-101.Wu Y F, Xu H Y.The effect of combined rubber on the interface interaction of SBR/BR blends[J].Rubber Industry, 2010, 57(2): 98-101.
[7] Le H H, Oβwald K, Ilisch S, et al. Silica transfer in ternary rubber blends: calculation and experimental determination[J]. Macromol. Mater. Eng., 2012, 297: 464-473.
[8] Phewphong P, Saeoui P.The use of dynamic mechanical thermal analysis technique for determining an uneven distribution of precipitated silica in CPE/NR blends[J].Polym. Test., 2008, 27: 873-880.
[9] Le H H, Ilisch S.Kinetics of the phase selective localization of silica in rubber blends[J]. Polym. Compos., 2010, 10: 1701-1711.
[10] 黄静. 三元共混橡胶中填料的相选择分布[J]. 橡胶参考资料, 2014(1): 16-22.