| 中
国
环
氧
树
脂
应
用
网 |
| Substituted
Urea Accelerators |
| Product
Name |
MP℃ |
Description |
Color |
PHR
with Dicy, (8)(11) |
Time
to Dbl, viscosity at 25℃, weeks (5) |
Cure
Time at
120℃ min. |
Cure
Time at
140℃ min. |
Tg.
℃,(5)(9) |
| OMICURE
U-24 |
185-195 |
2,4
Toluene bis dimethyl urea |
off-white |
1-5 |
10 |
20 |
7 |
127 |
| OMICURE
U-35 |
202-215 |
Cycloaliphatic
bisurea |
off-white |
1-5 |
>64 |
46 |
12 |
124 |
| OMICURE
U-52 |
220-230 |
4,4'
Methylene bis (phenyl dimethyl urea) |
off-white |
1-5 |
56 |
27 |
11 |
127 |
| OMICURE
U-405 |
126-136 |
Phenyl
dimethyl urea |
off-white |
1-5 |
9 |
22 |
9 |
118 |
| OMICURE
U-410 |
171-191 |
Toluene
bis dimethyl urea Technical grade |
off-white |
1-5 |
10 |
18 |
7 |
123 |
| OMICURE
U-415 |
190-205 |
Methylene
bis (phenyl dimethyl urea) Technical grade |
off-white |
1-5 |
22 |
33 |
12 |
128 |
(5) substituted urea at 3phr with 8phr dicy and
DGEBA (EEW=190)
(8) with DGEBA, EEW= 182-192
(9) Cure - DSC scan at 20℃/minute to 275℃
(11) Parts per hundred of resin
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| Product
Name |
MP℃ |
Color |
PHR
with Dicy, (8)(11) |
Time to
Dbl, viscosity at 25℃, weeks (5) |
Cure
Time at
120℃ min. |
Cure
Time at
140℃ min. |
Tg., ℃,(5)(9) |
| OMICURE
DDA |
>206 |
white |
5-10 |
>64 |
N/A |
N/A |
140 |
(5) substituted urea at 3phr with 8phr dicy and
DGEBA (EEW=190)
(8) with DGEBA, EEW= 182-192
(9) Cure - DSC scan at 20℃/minute to 275℃
(11) Parts per hundred of resin
(12) Melting Point
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| Miscellaneous
Curing Agents |
| Product
Name |
Description |
MP℃ |
Color |
Use
Level PHR |
Gardner
Color,max |
Tg.,℃,
with DGEBA, EEW=182-192 |
| OMICURE
24EMI |
2-
Ethyl-4-methylimidazole |
36-42(6) |
tan |
0.1-10(7) |
16 |
- |
| OMICURE
33DDS |
3,3'-Diaminodiphenyl
sulphone |
160-172 (10) |
tan |
30(8) |
- |
180 |
| OMICURE
BC-120 |
Boron Trichloride-amine
adduct |
25-35 |
tan |
0.1-10 |
- |
130 |
(6) can be liquid or solid at R.T. Viscosity at
25℃: 5,000 - 7,500 cps.
(7) low levels to accelerate acid anhydrides, mid-range or higher
levels as sole curing agent. Determine optimum concentration
empirically.
(8) with DGEBA, EEW= 182-192
(10) Onset
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