文献类型：期刊文献

中文题名：含硅芳炔树脂及其共混物熔体的流变性能

英文题名：Rheological Properties of the Molten Silicon-Containing Arylacetylene Resin and Its Blends

作者：张亚兵[1];童旸[1];袁荞龙[1];黄发荣[1];杜磊[1]

机构：[1]华东理工大学材料科学与工程学院,特种功能高分子材料及相关技术教育部重点实验室,上海200237

年份：2015

卷号：41

期号：3

起止页码：321

中文期刊名：华东理工大学学报(自然科学版)

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

基金：上海市重点学科项目(B502)

语种：中文

中文关键词：含硅芳炔树脂;苯并噁嗪;流变性质;凝胶时间;模型

外文关键词：silicon-containing arylacetylene resin;benzoxazine;rheological properties;gel time;model

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84.50kJ/mol降至54.83kJ/mol。
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.