超延伸高分子量聚乙烯力学性能的研究

STUDY ON MECHANICAL PROPERTIES OF ULTRA-HIGH MOLECULAR WEIGHT POLYETHYLENE

超延伸高分子量聚乙烯力学性能的研究王维泮，张凤英（北京化工大学高分子系北京１０００２９）关键词超高分子量聚乙烯，冷拉伸，超延伸，延伸比随着高科技的发展，对材料性能的要求越来越高．目前一些发达国家正在致力于高机能、超强力的塑料．使高分子高度取向是获得高...

s a rule, crystalline and flexble polymers can gain higher mechanical properties through extra-drawing' In the paper, the effect of drawing conditions on structures and properties of ultra-high molecular weight polyethylene (UHMWPE)'during two-stage drawing was studied' Results showed that during super-drawing,elastic modulus (E) and break strength (o) increased with drawing ratio (a) Attemperature Td= 150 ℃; when a=60, the perfect mechanical state was abtained, and at this time, E and a were in the highest (E= 130'44GPa, =3.86Gpa), 34 and 29times of those by onestage (cold) drawing respectively.