麻省理工学院：《polymer engineering》lec 14

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The aLF E 7.44〔 ≤(T ue·volu tho (T-T) 么L =t。aP() aτ ℃a Aa+以(T P/%、(T-T 8 从k)+(T-τ4)

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Example oga:=-17.44*(T-Tg)/(51.6+(T-Tg)); .aT:1748 51.6+7-7 Digits: =4: Tg: =0: offset: sevalf(subs(T=20, log aT))i log aT: -log aT-offseti logaN: =-17.44-/ +4.871 51.6+7 >T:=20+5*c。s(2*P⊥*t) aT: =10log ari aT: =subs(t=xi, aT)i t prime: =int(1/aT, xi=0. t)i Erel: =ke+k1*exp(-t prime/tau)i (-1420+5c6124) 71+5275)+487 Erel:= ke+ kle >ke:=10:k1:=90:tau:=10 plot(Erel, t=0. 10, labels=[ t(days),E rel(t)])i E rel(t) .(days)