【摘要】 在酚醛树脂的合成过程中引入环氧氯丙烷,通过聚合反应得到改性酚醛树脂,以此为原料,采用熔融纺丝法制备出环氧氯丙烷改性酚醛纤维。通过力学性能测试及TG、GPC、FT-IR等分析表征手段对纤维的结构和性能进行了研究。结果表明:环氧氯丙烷的加入显著提高了纤维的断裂伸长率,对纤维热稳定性和残碳率的影响很小,即改性纤维仍保持了纯酚醛纤维高残碳率和高热稳定性的特点。更多还原

【Abstract】 Phenolic fibers modified by epichlorohydrin were prepared.TG,IR spectroscopy and GPC were used to characterize the structure and performance of these modified fibers.The addition of Epichlorohydrin can improve the elongation and toughness of these modified fibers.The modified fibers also have good heat stability and high carbon yield at the same time.更多还原