5.3 A Simple Discussion on the Possible Networks
Deformation in the Dynamical Strain Sweep
Chen and Xu [58] thought that the ionic crosslinks resulted in an obscure mechanism of the Payne effect of the NR/ZDMA vulcanizates. They chose the NR
vulcanizate with 30 phr ZDMA as an instance to illustrate a tentative district of
0.1
1
10
190
200
210
220
230
240
250
260
270
280
290
1st sweep
2nd sweep
3rd sweep
4th sweep
a
b
c
e
d
NR
G'(KPa)
Strain(deg)
0.1
1
10
300
320
340
360
380
400
420
440
460
1st sweep
2nd sweep
3rd sweep
4th sweep
(b)
G'(KPa)
Strain(deg)
NR-10phr ZDMA
0.1
1
10
400
450
500
550
600
650
700
750
1st sweep
2nd sweep
3rd sweep
4th sweep
(c)
NR-20phr ZDMA
G'(KPa)
Strain(deg)
0.1
1
10
400
500
600
700
800
900
1000
1st sweep
2nd sweep
3rd sweep
4th sweep
(d)
NR-30phr ZDMA
G'(KPa)
Strain(deg)
0.1
1
10
600
800
1000
1200
1400
1st sweep
2nd sweep
3rd sweep
4th sweep
NR-40phr ZDMA
G'(KPa)
Strain(deg)
Fig. 12 Stress-softening of G
0 of NR/ZDMA vulcanizates, test temperature 60
C and frequency
1 Hz [58]
180
Y. Chen and C. Xu