Polyurea resin system “Porea R Series”
The Porea R Series is a thermosetting polyurea resin system developed by Kumiai Chemical with excellent characteristics in heat resistance, strength, and abrasion resistance.
Physical properties table of "Porea R Series”
| Product number | SX-040 *4 |
SX-042 *4 |
SX-043 *4 |
S-100 | SX-091 *5 |
R-110 *5 |
R-210 *5 |
R-300 *5 |
R-603 | RX-801 |
|---|---|---|---|---|---|---|---|---|---|---|
| Form A liquid B liquid |
Reddish brown viscous liquid Pale yellow liquid |
Reddish brown viscous liquid Pale yellow liquid |
Reddish brown viscous liquid Pale yellow liquid |
Pale yellowish red viscous liquid Pale yellow liquid |
Reddish brown viscous liquid Pale yellow liquid |
Reddish brown viscous liquid Pale yellow liquid |
Reddish brown viscous liquid Pale yellow liquid |
Reddish brown viscous liquid Pale yellow liquid |
Yellow liquid Clear liquid |
Yellow liquid Clear liquid |
| Mixing temperature A liquid(℃) B liquid(℃) |
r.t. 100 |
r.t. 100 |
r.t. 100 |
r.t. r.t. |
r.t. r.t. |
r.t. r.t. |
r.t. r.t. |
r.t. r.t. |
80 r.t. |
80 r.t. |
| Mixing ratio (A/B W/W) |
100/120 | 100/99 | 100/90 | 100/26 | 100/27 | 100/34 | 100/43 | 100/52 | 100/82 | 100/105 |
| Cure condition (℃×hr) |
100×1 120×24 |
100×1 120×24 |
100×1 120×24 |
100×0.25 100×15 |
100×1 150×4 |
100×1 150×4 |
100×1 150×4 |
100×1 150×4 |
100×1 150×4 |
100×1 150×4 |
| Pot life*1 (min) | 4.5 | 6.5 | 10 | 15 | 9 | 7 | 5.5 | 2.5 | 30 | 26 |
| Shore hardness (Shore A) (Shore D) |
90 |
80 |
72 |
92 |
92 |
95 59 |
69 |
78 |
85 |
89 |
| 100% modulus (MPa) |
7.4 | 3.9 | 2.6 | 7.4 | 8.0 | 17.2 | 28.4 | 50.0 | - | - |
| 300% modulus (MPa) |
9.3 | 5.8 | 4.0 | 15.5 | 15.6 | 27.1 | - | - | - | - |
| Tensile strength (MPa) | 53.9 | 43.6 | 36.0 | 40.1 | 54.9 | 47.8 | 43.5 | 52.2 | 75.5 | 38.0 |
| Elongation percentage (%) | 675 | 700 | 325 | 410 | 460 | 440 | 220 | 120 | 25 | 5> |
| Tear strength (N/mm) | 112 | 71 | 64 | 82 | 93 | 156 | 165 | 224 | - | - |
| Bending strength (MPa) | - | - | - | - | - | - | 19.3 | 40.6 | 88.2 | 123.3 |
| Bending elasticity (MPa) | - | - | - | - | - | - | 392 | 706 | 1970 | 2607 |
| Taber friction amount*2 (mg) |
42 | 40 | 38 | 87 | 63 | 100 | 105 | 111 | 139 | 329 |
| Rebound resilience (%) | 72 | 68 | 66 | 52 | 52 | 53 | 57 | 65 | - | - |
| Cs (70℃・2.2hr) |
35 | 34 | 35 | 68 | 49 | 39 | 55 | 69 | - | - |
| Tg*3 (℃) | -58 | -58 | -60 | -25 | -38 | -35 | -45 | <-100 | 189 | 227 |
| Tm*3 (℃) | 195 | 192 | 275 | 222 | 265 | 272 | 275 | 283 | 230 | 260 |
- 1 Time for viscosity to reach 50,000 mPa-s.
- 2 II-18,000 rpm. The wear rings were shaved and renewed before the test, and rubber debris adhering to the wear rings were cleaned with a brush every 250 rpm.
- 3 The tangent peaks on the viscoelasticity chart were designated as Tg and Tm.
- 4 SX-040, SX-042, and SX-043 have two components of liquid B and require a prepolymerization process before use.
- 5 MOCA included as part of the raw material.
Comparison of heat resistance between POREA R-110 and general urethane resins
| Treatment temperature | Before treatment | 180℃ | 200℃ |
|---|---|---|---|
| POREA R-110 |  |
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 |
| General type Urethane |
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