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借助HAAKERHEOCORD90流变仪分别在200、210、220、230℃4个温度下,研究了PP/K树脂合金材料的流变行为。研究结果表明:PP/K树脂合金材料的流变行为同PP一样,仍属于非牛顿型假塑性流体流动行为。不同剪切速率下,PP/K树脂合金材料黏流活化能比PP小,说明PP/K树脂合金材料的熔体黏度对温度不十分敏感。相同温度下,PP/K树脂合金材料的挤出膨胀比高于PP。PP/K树脂合金材料的熔体流动速率、伸长率、冲击强度明显高于PP。
The rheological behavior of PP / K resin alloy was investigated by means of HAAKERHEOCORD90 rheometer at temperatures of 200, 210, 220 and 230 ℃. The results show that the rheological behavior of PP / K resin alloy is the same as that of PP, which still belongs to the flow behavior of non-Newtonian pseudoplastic flow. At different shear rates, the viscous flow activation energy of PP / K resin alloy material is smaller than PP, which indicates that the melt viscosity of PP / K resin alloy material is not very sensitive to temperature. At the same temperature, PP / K resin alloy material extrusion expansion ratio higher than PP. PP / K resin alloy melt flow rate, elongation, impact strength was significantly higher than PP.