Surface Modification of Poly(p-phenylene benzobisoxazole) Fibers by UV-Absorbers for Enhancement of UV Resistance 


Vol. 50,  No. 3, pp. 208-216, Jun.  2013
10.12772/TSE.2013.50.208


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  Abstract

A UV testing chamber was designed and prepared for testing the UV-resistance of poly(p-phenylene benzobisoxazole) (PBO) fibers. The optimum conditions for the test were established by measuring UV irradiation at a chamber position using various kinds of UV sources and different irradiation times. Expectedly, PBO fibers (Zylon®) showed significant degradation under UV irradiation by exhibiting a decrease in the tensile strength and elongation of up to 37% and 18%, respectively. Selected UV-absorbing and -stabilizing agents were successfully coated onto the fibers using water-borne polyurethane. It was found that triazine-type UV absorbing agents were more effective than benzophenone-or benzotriazole-type agents in reducing the degradation of PBO fibers under UV irradiation.

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pISSN : 1225 - 1089
eISSN : 2288 - 6419

한국연구재단 우수등재학술지 유지 (2022년)