UV protection finishing of sun-protective polyamide fabrics was carried out with compound of reactive and non-reactive UV absorbers （LIQ and HLF）. The influences of finishing temperature, time, dosage of ultraviolet absorbers, sodium chloride and acetic acid on the anti-UV finishing effect were discussed. And the washing fastness of finished polyamide fabrics was also tested. The results showed that the UPF value of finished fabrics with the compound UV absorber increased with the finishing temperature and time increasing, but decreased with the increasing of dosage of sodium chloride and acetic acid. When both the mass concen- tration of UV absorbers LIQ and HLF were 5%（omf）, finishing at 98 -C for 60 min, the UPF value of finished polyamide fabrics were more than 80. The finished fabrics obtained good building-up performance on polyam- ide fabric and the finished fabrics had excellent washing fastness. The UPF value was still more than 70 after 30 times standard washing.
compound ultraviolet absorber
sun-protective polyamide fabric