摘要
制备了聚氨酯(PU)/四硝基酞菁铁(Fe TNPc)复合材料,扫描电镜观察表明,Fe TNPc与PU基体间相容性良好;力学测试表明,在室内环境下,改性PU的力学性能明显优于空白PU;紫外老化测试表明,在紫外光照射下,随着Fe TNPc含量的增加,样品的力学性能下降程度增大,但与纯PU相比,改性样品仍然具有较高的力学性能。改性样品在紫外光照射下力学性能下降的原因在于酞菁在光照下产生单线态氧所致,单线态氧具有极强的氧化性,降解了PU的链段。
In this paper, polyurethane （PU） / Fe-tetranitro phthalocyanine （Fe-TNPc） composites were prepared. SEM photos showed that FeTNPe had good compatibility with PU matrix. Results of mechanical tests showed that PU containing FeTNPc showed improved mechanical properties than that of pure PU in the room atmosphere. UV aging test results showed that under the irradiation of UV, the mechanical properties of the samples containing FeTNPc showed significant decreases. But compared with pure PU, the modified samples still had higher mechanical properties. The decrease of mechanical properties was caused by the singlet oxygen generated by FeTNPc, which may decompose the molecular chains of PU.
出处
《合成材料老化与应用》
2015年第3期56-58,103,共4页
Synthetic Materials Aging and Application
