PRODUCTION OF HIGH-ORIENTATION POLYETHYLENE MATERIAL

PURPOSE:To obtain polyethylene material having excellent characteristics of high strength and high modulus of elasticity by extruding ultrahigh-mol. wt. polyethylene powder having specified mol. wt. and specified size of crystallite in a solid phase at the temp. lower than m.p. and then stretching i...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	SANO AKIRA, UEISHI HIROSHI, MATSUURA KAZUO, IWANAMI MUTSUNAGA, YOKOYAMA SHIGEKI
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PURPOSE:To obtain polyethylene material having excellent characteristics of high strength and high modulus of elasticity by extruding ultrahigh-mol. wt. polyethylene powder having specified mol. wt. and specified size of crystallite in a solid phase at the temp. lower than m.p. and then stretching it. CONSTITUTION:As mol. wt. of ultrahigh-mol. wt. polyethylene powder utilized at a time for producing high-orientation polyethylene material, limiting viscosity in decalin is 5-50 dl/g and viscosity-average molecular weight is equivalent to 0.5-12 million. In the crystalline part finely dispersed in PE, the size of crystallite in the normal direction of (110) face in a prismatic crystal is