Testing of plastics; determination of the viscosity number of polyethylene terephthalate (PETP) or polybutylene terephthalate (PBTP) in dilute solution— 4 стр.
Testing of plastics; testing of oxidation stability by means of ageing in an oven; polyethylene of high density (PE-HD), infra red spectroscopic (IR) determination of the carbonyle content— 4 стр.