ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract Poly-[N,N′-(4,4′ oxydiphenylene) pyromellitimide] has been reinforced with unidirectionally aligned silica fibre. A partial pre-cure of the basic laminate before lay-up in the mould successfully prevented porosity and strength degradation in the final composite structure. Samples heated for periods up to 100 h and temperatures up to 400° C in circulating air retained 50 to 90% of their original strength. For all the samples, the dynamic modulus of elasticity was in the range 4.55 to 4.95×105 lb/in2 (3.20 to 3.48×105 kg/cm2), the fibre content being 43 to 47.5% by volume. This material incurred a 5% weight loss on heating in air at 350° C for 100 h.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00549568
