IPC-TM-650 EN 2022 试验方法1.pdf - 第321页
Page 1 of 5
Figure 4 DMA Plot for Storage Modulus, Loss Modulus, and Tan Delta on One Plot
Storage Modulus (MPa)
Loss Modulus (MPa)
Tan Delta
200
150100
500
-50
-100
10.0
100.0
1000.0
10000.0
0.90
0.75
0.60
0.45
0.30
0.15
0.0
Temperature (
˚
C)
Storage Modulus (MPa)
Tan Delta
IPC-TM-650
Number
Subject Date
Revision
Page 4 of 5
Page 1 of 5
Figure 2 TMA Expansion Curve
Slope in this region:
CTE above T
g
Slope in this region:
CTE below T
g
T
g
Temperature (˚C)
Expansion (µm)
A
B
C
D
Figure 3 TMA Expansion Curve and Instantaneous CTE
Curve
Instantaneous CTE Curve
T
g
60
50
40
30
20
10
0
Expansion Curve
0
40
80
120
160
200
240
Temperature (˚C)
Expansion (µm)
CTE (ppm)
IPC-TM-650
Number
Subject Date
Revision
Page 3 of 5