An addition-curable poly(amic acid) film was subjected to various thermal pretreatments and then to uniaxial or biaxial drawing. Hot-stretching to 300% of the initial length produced better than twofold increases in tensile modulus and strength of partially-cured films. Most of the improvement was maintained upon completion of the curing at constant length.
Smirnova V Ye , Bessonov M I and Sklizkova V P1990Polym. Sci. USSR32267-267
3.
Hasegawa M , Shindo Y , Sugimura T , Yokota R , Kochi M and Mita I1994J. Polym. Sci. (Phys).321299-1299
4.
Arnold F E , Shen D X , Harris F W and Cheng S Z D1994J. Mater. Chem.4105-105
5.
Dorsey K D , Abhiraman A S , Hinkley J A and St. Clair T L1999J. Appl. Polym. Sci.731215-1215
6.
Pater R H 2004 Heat, moisture, and chemical resistant polyimide compositions and methods for making and using them, USPatent No. 6,777,525, 17 August 2004
7.
Pater R H 1991 Proc. 36th International SAMPE Symposium and Exhibition, San Diego, CA, 15-18 April 1991, Closed Papers Publication 78
8.
Hou T H , Wilkinson S P , Johnston N J , Pater R H and Schneider T L1996High Perform. Polymers8491-491
9.
Hinkley J A , Dezern J F , Feuz L and Klinedinst D2004Polym. Eng. Sci.441360-1360
10.
Snyder R W1989Polyimides: Materials, Chemistry and CharacterizationFeger C , Khojasteh M M and McGrath J E , eds ( Amsterdam: Elsevier Science Publishers B.V. ) p 363-363
11.
Fjare D E and Roginski R T1993Advances in Polyimide Science and TechnologyFeger C , Khojasteh M M and Htoo M S eds ( Lancaster, PA: Technomic Publishing ) p 326-326
12.
Chen K-M , Wang T-H , King J-S and Hung A1993J. Appl. Polym. Sci.48291-291
13.
Reuter R , Franke H and Feger C1988Appl. Optics274565-4565