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    张亚兵, 童旸, 袁荞龙, 黄发荣, 杜磊. 含硅芳炔树脂及其共混物熔体的流变性能[J]. 华东理工大学学报(自然科学版), 2015, (3): 321-327.
    引用本文: 张亚兵, 童旸, 袁荞龙, 黄发荣, 杜磊. 含硅芳炔树脂及其共混物熔体的流变性能[J]. 华东理工大学学报(自然科学版), 2015, (3): 321-327.
    ZHANG Ya-bing, TONG Yang, YUAN Qiao-long, HUANG Fa-rong, DU Lei. Rheological Properties of the Molten Silicon Containing Arylacetylene Resin and Its Blends[J]. Journal of East China University of Science and Technology, 2015, (3): 321-327.
    Citation: ZHANG Ya-bing, TONG Yang, YUAN Qiao-long, HUANG Fa-rong, DU Lei. Rheological Properties of the Molten Silicon Containing Arylacetylene Resin and Its Blends[J]. Journal of East China University of Science and Technology, 2015, (3): 321-327.

    含硅芳炔树脂及其共混物熔体的流变性能

    Rheological Properties of the Molten Silicon Containing Arylacetylene Resin and Its Blends

    • 摘要: 采用旋转黏度计和流变仪考察了含硅芳炔树脂(PSA)和含炔丙基苯并噁嗪(P BZ)共混改性PSA树脂熔体的流变行为,建立了树脂黏度 组分 温度的数学模型。结果表明,P BZ共混改性PSA树脂可使树脂的加工窗口变宽,树脂在90~130 ℃的黏度随温度升高而下降,PSA树脂的熔体黏度随P BZ的加入而降低,P BZ的加入提高了PSA树脂的加工适用性;PSA树脂的黏度可通过加入P BZ和升高加工温度进行预测和调控。PSA及其改性树脂的动态流变行为显示树脂熔体呈牛顿流体,P BZ降低了PSA树脂熔体的储能模量和复数黏度。用双阿仑尼乌斯方程对PSA及其改性树脂在160~190 ℃的等温黏时曲线进行拟合,得到的经验模型表明当PSA树脂共混入质量分数为10%的P BZ时,树脂的凝胶时间延长,而树脂凝胶固化活化能从84.50 kJ/mol降至54.83 kJ/mol。

       

      Abstract: Abstract: The rotary viscometer and rheometer were used to study the rheological behaviors of the silicon containing arylacetylene resin (PSA) and the blended resin with propargyl containing benzoxazine (P BZ). The mathematical model of viscosity composition temperature of the resins was established. The results show that the processing window of PSA resin is enlarged by blending with P BZ. The viscosity of the molten PSA reduced with addition of P BZ and increasing temperature in the range of 90—130 ℃. The processing applicability of PSA was enhanced by blending with P BZ. The viscosity of the molten PSA resin can be predicted and modulated by the mass fraction of P BZ and processing temperature. The rheological properties of the molten PSA and its blends behave as a Newtonian flow. The storage modulus and complex viscosity of the molten PSA resin decreased with addition of P BZ. The dual Arrhenius equation was used to fit the isothermal viscosity time variation of the molten PSA and its blends in 160—190 ℃. The deduced experiential models indicate that the gel time of PSA is prolonged and the gel activation energy of PSA reduce from 84.50 kJ/mol to 54.83 kJ/mol when 10% mass fraction of P BZ are added.

       

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