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Controlling crosslinking density and processing parameters of phthalonitriles

Patent image
NRL

Disclosed is a composition having: a diphthalonitrile compound having at least two phthalonitrile groups; a reactive plasticizer; and an amine curing agent. Also disclosed is a composition having: a diphthalonitrile compound having at least two phthalonitrile groups; a nonreactive plasticizer; and an amine curing agent. Also disclosed is a method of: providing a composition having a phthalonitrile compound; heating the composition to a processing temperature until the composition has a viscosity of 30-40 Pa·s at the processing temperature to form a partially cured composition; placing the partially cured composition into a material chamber of an extrusion machine; heating the partially cured composition and the material chamber to within 10° C. of the processing temperature; and extruding fiber from the extrusion machine.

Inventors: 
Keller, Teddy M.; Laskoski, Matthew; Saab, Andrew P.
Patent Number: 
Technical domain: 
Materials and Coatings
FIle Date: 
2015-10-29
Grant Date: 
2016-10-11
Grant time: 
348 days
Grant time percentile rank: 
6
Claim count percentile rank: 
3
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY