Abstract: The progress of anti-dripping research has been introduced and blending, copolymerization, grafting and irradiation crosslinking method are used now to achieve drip-resist effect. Meanwhile, their merit and demerit of these methods are compared, the mechanism of anti-dripping is also analyzed including tacky effect, char-forming and intumescent flame retardant. Irradiation crosslinking is a cold processing technique which owns many advantages such as energy conservation, environment protection and making industrialization easily, also it can form crosslinked structure in the fiber, so irradiation crosslinking will be a potential way for the further investigation and application.

Key words: thermoplastic fiber , anti-dripping , blending , copolymerization , grafting , irradiation crosslinking