화학공학소재연구정보센터
Polymer Engineering and Science, Vol.37, No.11, 1896-1900, 1997
A Sensitive Mechanical Test for Slow Crack-Growth in Polyethylene
Slow crack growth (SCG) in a wide variety of polyethylenes has been investigated by a constant tensile load test (the PENT test) for a single edge notched specimen, The PENT test is very sensitive to the changes in molecular structure and morphology of polyethylene. The resistance to SCG depends on the density of the tie molecules and the strength of the crystals.