SAMPE Journal - July/August 2022 - 63

Figure 5. FT-IR of propargyl amine and matrimid 5292A.
Resin System
Storage Modulus
(25o
C, MPa)
E' Tg onset (o
C)
C)
Loss Modulus peaks
(o
Tan d peak (o
C)
Tensile Test Result (ASTM D638)
Stress at break (ksi):
10.00
Strain at break (%):
Modulus (Ksi,
(Chord-Cursor):
0.9
967.84
35700
RDA 2020024
3860
(50o
273
296
306
C)
257
272
285
192
203
221
191
206
238
197
212
226
248
266
280
With
RDA
2020-047
1870
With Epoxy /
orgasol 1002
4631
With RDA
2021-046
3397
With Epoxy/
2015-09
4872
With Long chain
Benzaoxazine
3887
12.07 ±
0.93
1.82 ±
0.14
739.14
± 18.55
Flexural Test Result (ASTM D790)
810.76
Modulus (Young's,
ksi):
Break Stress (ksi):
Break Strain (%):
18.42
6.55 ±
0.15
3.16 ±
0.02
293.92
± 25.84
8.25 ±
0.69
1.32 ±
0.16
658.36
± 22.41
10.37 ±
0.85
1.68 ±
0.28
690.93
± 33.16
11.77 ±
1.98
1.90 ±
0.40
710.75
± 4.67
10.07 ±
8.79
1.28 ±
0.18
747.99
± 52.67
716.06
± 33.14
23.97 ±
2.30
3.73 ±
0.42
320.00
± 7.59
761.30
± 4.70
11.49 ±
1.12
4.35 ±
0.83
Table 6. Mechanical properties of furfuryl amine benzoxazine system.
complete cure, there is a broad band show up at
3400 cm-1, suggest the degradation of C-N bond
into a free amine.
When co-polymerization of 5292B-PPA and
BMI, there is no such observation. In the FT-IR,
it's clear to see the disappearance of the carboncarbon
triple bond as the band at 3300 cm-1 as the
temperature increased. At 200°C, it still exists, but
at 250°C, there is no more.
The Thermal Stability also see the improvement
for the propargylamine benzoxazine system as
the char yield increased by up to more than 10
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points (from 29% to 41% for 5292B-PPA, 34% to
49% for BisA-PPA), however, for furfuryl amine
benzoxazines, the addition of BMI either have very
limited improvement the char yield (for 5292B-FA
from 39% to 46%), or no improvement at all (for
thio-FA, from 62% to 58%) some even decreased in
limited data.
Toughener Furfuryl Amine System
To investigating the potential application of those
functionalized benzoxazine resin, tensile and
flexural property has been further investigated for
JULY AUGUST 2022
|
SAMPE JOURNAL | 63
23.51 ±
1.91
3.13 ±
0.29
454.56
± 4.81
21.22 ±
2.32
5.21 ±
0.80
793.05
± 11.50
19.37 ±
0.91
2.44 ±
0.22

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SAMPE Journal - July/August 2022

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SAMPE Journal - July/August 2022 - Cover1
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