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通过原位聚合法制备纳米氮化钛改性PET材料。利用差式扫描量热仪(DSC)研究纳米氮化钛改性PET材料结晶行为和在不同降温速率下的非等温结晶动力学,用Jeziorny方程对非等温结晶过程进行分析;同时利用热重分析仪(TGA)和万能试验机等研究改性材料的热性能和力学性能。结果表明:纳米氮化钛粒子的加入,起到了异相成核作用,改变了PET的成核机理,提高了PET的结晶度和结晶速率;改善了PET材料的热稳定性和力学性能。
Preparation of titanium nitride modified PET material by in situ polymerization. Differential scanning calorimetry (DSC) was used to study the crystallization behavior and the non-isothermal crystallization kinetics of the modified titanium nitride nanoparticles. The Jeziorny equation was used to analyze the non-isothermal crystallization process. The thermal gravimetric analysis TGA and universal testing machine to study the thermal and mechanical properties of modified materials. The results showed that the addition of nano-TiN particles played the role of heterogeneous nucleation, changing the nucleation mechanism of PET, improving the crystallinity and crystallization rate of PET, and improving the thermal stability and mechanical properties of PET.