KNOT STRENGTH OF INDUSTRIAL TEXTILE FIBRES

In this paper, the knot strengths of the seven strands which were made of polyethleneterephthalate(PET), nylon 6, polyvinyl formal fibre, polypropylene and polyethylene with differentspecification used for industrial purposes were tested and discussed. The results of experimentshow: the knot strength loss does not only depend on the breaking elongation and the diameter ofsample, but also on the shape of the load-extension curve and twist factor of sample and other fac-tors; the range of the knot strength loss and the breaking energy loss vary in a wide range, in thepresent case. the former is from 2.7% to 58.14% and the latter from 16.36% to 78.76%. Thestrength loss of the polypropylene filament is the least among the samples investigated.

KNOT STRENGTH OF INDUSTRIAL TEXTILE FIBRES

In this paper, the knot strengths of the seven strands which were made of polyethlene terephthalate(PET), nylon 6, polyvinyl formal fibre, polypropylene and polyethylene with different specification used for industrial purposes were tested and discussed. The results of experiment show: the knot strength loss does not only depend on the breaking elongation and the diameter of sample, but also on the shape of the load-extension curve and twist factor of sample and other fac- tors; the range of the knot strength loss and the breaking energy loss vary in a wide range, in the present case. the former is from 2.7% to 58.14% and the latter from 16.36% to 78.76%. The strength loss of the polypropylene filament is the least among the samples investigated.