Study of the Frost Resistance of HDFC Based on a Response Surface Model and GM (1,1) Model

Figure 2

The change law of relative dynamic elastic modulus of HDFC. (a) HDFC6-1-HDFC6-2. (b) HDFC9-1-HDFC9-2. (c) HDFC12-1-HDFC12-2.

(a)

(b)

(c)