Effects of additives on the processing and properties of LARC-TPI polyimideThe 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.
Document ID
19900063015
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Elandjian, L. (Foster-Miller Associates, Inc. Waltham, MA, United States)
Haghighat, R. (Foster-Miller Associates, Inc. Waltham, MA, United States)
Lusignea, R. (Foster-Miller Associates, Inc. Waltham, MA, United States)
Wallis, R. (Foster-Miller, Inc. Waltham, MA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Subject Category
Nonmetallic Materials
Meeting Information
Meeting: International SAMPE Symposium and Exhibition