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利用 XLY- 流变仪研究了多功能共聚酯与 PET的流变性能。结果表明 ,多功能共聚酯的流动性好于 PET,其表观粘度对剪切速率的变化比 PET更敏感 ,对温度的依赖性不如 PET大 ,而 Ba SO4 对高聚物熔体起增粘作用。
The rheological properties of multifunctional copolyester and PET were studied by X-ray rheometer. The results show that the flowability of multifunctional copolyesters is better than that of PET. The change of apparent viscosity to shear rate is more sensitive than that of PET, and its dependence on temperature is not as large as that of PET. Sticky effect.