From Figure 5 a , the κ of the sandwich films ( t = 3 and 5 h) decreases with increasing temperature, while the sandwich film ( t = 7 h) shows an increasing trend.
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From Figure 5 a , the κ of the sandwich films ( t = 3 and 5 h) decreases with increasing temperature, while the sandwich film ( t = 7 h) shows an increasing trend.