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首页> 外文期刊>Journal of Applied Polymer Science >Influence of Impact Load-Temperature Conformity on Toughening of Poly(vinyl chloride) by Core-Shell Rubber Particles
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Influence of Impact Load-Temperature Conformity on Toughening of Poly(vinyl chloride) by Core-Shell Rubber Particles

机译：冲击载荷-温度适度对核-壳橡胶颗粒增韧聚氯乙烯的影响

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The work focused on the elucidation of several key parameters in toughening poly(vinyl chloride) (PVC) by the methyl methacrylate-butadiene-styrene (MBS) core-shell particles. Accordingly, blends containing various weight percent of the MBS particles were prepared and characterized by dilute solution viscometry, dynamic light scattering, dynamic mechanical thermal analysis, transmission electron microscopy, and temperature variable impact test. The results showed PVC/MBS solution miscibility in almost all compositions with their maximum thermodynamic affinities at about 17 and 67 wt % of MBS in tetrahydrofurane (THF). In addition, MBS weight percent increase in its blend with the PVC above 10 led to severe impact energy raise with eventual leveling at about 17 wt %. Furthermore, blend toughness and its components miscibility in solution increased in parallel up to 20 wt % of MBS particles. On the other hand, blend toughness declined with test temperature decrease toward impact modifier core T-g at about -30 degrees C even for the sample with 20 wt % of the MBS particles. Finally, the brittle-ductile transition of the blend containing 20 wt % of the MBS particles comparison with its matrix tan delta-temperature correlation implied 2500 J/m impact energy equivalence with 90 degrees C sample temperature rise in secondary relaxation activation. (C) 2008 Wiley Periodicals, Inc. J Appl Polym Sci 111: 2691-2696, 2009
机译：这项工作集中于阐明甲基丙烯酸甲酯-丁二烯-苯乙烯（MBS）核-壳颗粒增韧聚氯乙烯（PVC）的几个关键参数。因此，制备了包含各种重量百分比的MBS颗粒的共混物，并通过稀溶液粘度法，动态光散射，动态机械热分析，透射电子显微镜和温度可变冲击试验表征。结果显示，PVC / MBS溶液几乎可在所有组合物中混溶，其最大热力学亲和力约为MBS在四氢呋喃（THF）中的17和67 wt％。另外，MBS与PVC的共混物中的MBS重量百分数增加到10以上导致严重的冲击能量增加，最终流平为约17重量％。此外，在高达20 wt％的MBS颗粒中，共混物韧度及其在溶液中的可混溶性平行提高。另一方面，即使对于具有20重量％的MBS颗粒的样品，在约-30℃下，随着测试温度朝着抗冲改性剂芯T-g的降低，共混物韧性也下降。最后，含有20 wt％MBS颗粒的共混物的脆性-延性转变与其基体tanδ温度相关性的比较表明，在二次弛豫活化过程中，样品的温度升高90摄氏度时，冲击能量当量为2500 J / m。 （C）2008 Wiley Periodicals，Inc. J Appl Polym Sci 111：2691-2696，2009

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