Plastic and nonmetallic article shaping or treating: processes – Carbonizing to form article – Agglomeration or accretion
Patent
1988-03-08
1992-11-03
McCamish, Marion E.
Plastic and nonmetallic article shaping or treating: processes
Carbonizing to form article
Agglomeration or accretion
2642104, 2642108, 522120, 522121, 522125, 522127, 522161, 5263481, B29C 3510, B29C 4700, B29C 5500, B29C 7104
Patent
active
051604647
ABSTRACT:
A process for the preparation of an oriented homo- or co-polyalkene material of improved strain rate sensitivity, which process comprises subjecting the oriented homo- or co-polyalkene material having a weight average molecular weight (M.sub.w).ltoreq.350,000, a number average molecular weight (M.sub.n).gtoreq.5,000, and a 2% secant modulus of at least 10 GPa at a strain rate of 2.times.10.sup.-5 sec.sup.-1 to a high energy irradiation of a dosage of at least 1 Mrad and not more than 60 Mrads at an elevated temperature in vacuo or in an inert or sensitizing atmosphere.
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Busfield Walter K.
Ward Ian M.
Woods Denis W.
Koeckert Arthur H.
McCamish Marion E.
National Research Development Corporation
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