PTMG/TDI series Polyurethane Pre-polymer A60- shore D60
PTMEG PU Pre-polymers
Application:It can be used to make rods, caster wheels, rollers, Sealing rings, sieve plates and other
polyurethane elastomers.
Characteristics:The finished products have good abrasion resistance, Water resistance, excellent mechanical properties, color regulating by adding pigment.
Process Points:After the performed polymer vacuum degassing in 80～85℃, blending with melted MOCA, vacuum
degassing, casting, vulcanization moulding. It is apply to manual or casting machine.
Storage:Store in a cool and dry place,If you can ’t use it up at a time, filling nitrogen gas and then sealing it. The storage time of original packing is 6 month.
Packing:20Kg/drum or 200Kg/drum
| Type |
JY1219 |
JY1225 |
JY1235 |
JY1242 |
JY1250 |
JY1261 |
| NCO content % |
1.9±0.2 |
2.5±0.2 |
3.5±0.2 |
4.2±0.2 |
5.0±0.2 |
6.1±0.2 |
| Appearance at 20℃ |
Colorless or light yellow solid |
|
MOCA/g (100g
prepolymer)
|
4.7(E300) |
7.4 |
10.3 |
12.4 |
14.8 |
18 |
| Viscosity (85℃) /mPa · s |
1600 |
750 |
820 |
700 |
450 |
300 |
| Mixing Temperature /℃ |
80/30 |
80/120 |
85/115 |
80/115 |
75/115 |
75/115 |
| Gel time/min |
14 |
18-26 |
12-18 |
10-16 |
8-12 |
5-8 |
| Post cure time(100 ℃)/h |
16 |
16 |
16 |
16 |
16 |
16 |
| Hardness(Shore A) |
62 |
75 |
85 |
91 |
93 |
95 |
| 100% Modulus /MPa |
2 |
3 |
4 |
7 |
9 |
10 |
| 300% Modulus /MPa |
4 |
6 |
10 |
18 |
19 |
20 |
| Tensile strength /MPa |
11 |
25 |
28 |
35 |
38 |
40 |
| Elongation at break/ % |
650 |
550 |
430 |
420 |
400 |
370 |
| Tear Strength (without Nick) |
50 |
53 |
75 |
90 |
105 |
110 |
| Rebound / % |
59 |
60 |
50 |
48 |
52 |
46 |
| Specific gravity (25℃) (g/ cm3) |
1.1 |
1.1 |
1.12 |
1.12 |
1.13 |
1.15 |
| Abrasion loss /mm³ |
50 |
60 |
50 |
48 |
52 |
46 |
Product Tags:
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PTMG TDI Series PU Prepolymer For PU Elastomer Images
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