ABSTRACT
Thedevelopmentofspecialmachinery,aircraftandmissileengineering, andautomotiveindustrybroughtupthetaskofcreatingheat-resistantpolymeric materialsbeforechemistryofhigh-molecularcompounds.Bynow manufacturingofarticlesbypressmoldingorextrusionisoneofthemost effectiveandprogressivemethods.Therefore,polymericmaterialsmustpossess thermoplasticproperty.
