成形加工
Online ISSN : 1883-7417
Print ISSN : 0915-4027
ISSN-L : 0915-4027
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34 巻, 7 号
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目次
巻頭言
研究総覧―プラスチック成形加工の最近の研究動向―
技術報告
プリンキピア ―常識を変えたモノたちの物語―
日本の大学・試験・研究機関の研究 : 226
会議・見本市だより
論文
  • フィラーがスチレンブタジエンゴム複合体の流路壁面での押出流動に及ぼす影響
    平井 秀憲, 植松 英之, 佐藤 有二, 田上 秀一
    2022 年 34 巻 7 号 p. 270-276
    発行日: 2022/06/20
    公開日: 2022/07/20
    DOIhttps://doi.org/10.4325/seikeikakou.34.270
    ジャーナル フリー
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    In this study, the effect of silica (Si) or titanium dioxide (Ti) on the extrusion behavior of styrene-butadiene rubber (SBR) was investigated. The complex viscosity of SBR, acquired from linear viscoelasticity, increased with the addition of Si or Ti, and the addition effect of Si on the complex viscosity was larger than that of Ti. On the other hand, the shear stress of SBR, evaluated using a capillary rheometer, slightly increased with the addition of Si, whereas that of SBR decreased with the addition of Ti. The roughness on the extrudate surface of SBR was suppressed with the addition of Si or Ti in the capillary flow test. Focusing on the effect on the surface roughness by the wall slip while flowing in the capillary, the wall slip velocity of each sample was calculated from the analysis of pressure flow in the capillary. From the relationship between the surface roughness and the wall slip velocity, the addition of Si or Ti results in the suppression of the extrudate of SBR to the surface roughness due to promoting the wall slip. Therefore, it was concluded that the Si and Ti contributed to the wall slip of SBR in the shear flow, and the wall slip suppressed the surface roughness of the SBR extrudate.

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