KELPkid From United States of America, joined Nov 2005, 6398 posts, RR: 3
Reply 1, posted (4 years 9 months 2 weeks 5 days 13 hours ago) and read 2985 times:
You know, my wife made our Thanksgiving turkey dinner in a plastic bag that baked in an oven all afternoon at 350 degrees Farenheit, and the turkey came out delicious (nice and moist), and no one in our immediate family fell sick from poisioning... The point being that, there are some plastics that can take high temperatures...
Celebrating the birth of KELPkidJR on August 5, 2009 :-)
Nomadd22 From United States of America, joined Feb 2008, 1871 posts, RR: 0
Reply 4, posted (4 years 9 months 2 weeks 5 days 11 hours ago) and read 2927 times:
Nice article, but the first caption "When it's finished, the 787, also known as the Dreamliner will fly further on less fuel than any existing jet" kinda makes you wonder just how stupid a reporter can be.
Different epoxy compounds together with various fabrics along with the use of the part, its location on the airframe and its intended lifespan all call for different curing rates and temperatures. Some components are CFRP's, others are a matrix of carbon , Kevlar and fiberglass while still, some are just fibreglass. Many different resins along with fillers, aluminum powder, all add to the complexity of cure rates. Composites are such a science that in my personal opinion, its an artform. You also don't need an autoclave to create all the parts...just a mold and vacuum bag. Look up "Heatcons" Website and read about this...its interesting reading. Pretty amazing when you consider you mix two liquids, part A and part B epoxy, impregnate fabric off a roll, bake, and out pops a 787!...although grossly simplistic...thats sort of what is happening...