Publikationsdatum:
2019-07-13
Beschreibung:
The blending of LARC-TPI polyimide with the thermotropic liquid crystal polymer designated Xydar and with four different oligomeric imide materials has facilitated the resulting resin systems' processing into films while enhancing their mechanical properties and lowering their coefficient of thermal expansion to virtually zero. Two film-formation processes have been evaluated: (1) the casting of polyamic acid films followed by thermal imidization and biaxial stretching, and (2) the blown-film melt-extrusion of fully imidized LARC-TPI polymer. The best results have been obtained through the use of Xydar as a processing aid at levels in the 10-30 percent range.
Schlagwort(e):
NONMETALLIC MATERIALS
Materialart:
International SAMPE Symposium and Exhibition; Apr 02, 1990 - Apr 05, 1990; Anaheim, CA; United States
Format:
text
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