PTMEG
PTMG/TDI System
|
Type |
D2125 |
D2130 |
D2135 |
D2142 |
D2150 |
DT2155 |
D2162 |
D2170 |
D2186 |
D2196 |
|
NCO content /% |
2.3±0.1 |
3.0±0.1 |
3.5±0.1 |
4.2±0.2 |
5.0±0.2 |
5.5±0.2 |
6.2±0.2 |
7.0±0.2 |
8.6±0.2 |
9.65±0.2 |
|
Appearance at 20℃ |
White solid |
White solid |
White solid |
White solid |
White solid |
PPG/PTMG transparent liquid |
White solid |
White solid |
White solid |
White solid |
|
MOCA g /100g prepolymer |
6.7 |
8.8 |
10 |
12.1 |
14.3 |
16.1 |
18 |
20.5 |
25 |
27 |
|
Viscosity (/ |
2500 |
1200 |
1200 |
750 |
1200 |
350 |
480 |
320 |
400 |
350 |
|
Mixing temperature/℃ (Prepolymer/MOCA) |
90/120 |
90/120 |
85/120 |
85/120 |
80/120 |
80/120 |
80/120 |
75/120 |
70/110 |
70/110 |
|
Gel time /min |
17 |
12 |
11 |
10 |
8 |
6 |
6 |
4 |
4 |
2 |
|
Post cure time(100℃ )/h |
16 |
16 |
16 |
16 |
16 |
16 |
16 |
16 |
16 |
16 |
|
Hardness (Shore A) |
75±2 |
82±2 |
85±2 |
90±1 |
93±1 |
92±1 |
95±1 |
97±1 |
|
|
|
Hardness (Shore D) |
|
|
|
|
|
|
49±2 |
56±2 |
65±2 |
75±2 |
|
100% Modulus/MPa |
2.1 |
4.3 |
5.4 |
7.5 |
9.1 |
7.3 |
12.8 |
18.5 |
26.9 |
32.6 |
|
300% Modulus/MPa |
3.2 |
7.6 |
9.6 |
14.1 |
17.2 |
14.5 |
36.3 |
42.6 |
- |
- |
|
Tensile strength /MPa |
23 |
24 |
27 |
33 |
39 |
37 |
48 |
49 |
44 |
54 |
|
Elongation / % |
660 |
610 |
550 |
500 |
440 |
440 |
350 |
320 |
250 |
220 |
|
Tear strength without nick(KN/m) |
32 |
55 |
65 |
78 |
88 |
73 |
95 |
111 |
185 |
160 |
|
Tear strength with nick(KN/m) |
12 |
17 |
21 |
28 |
33 |
18 |
33 |
43 |
43 |
44 |
|
Resilience / % |
60 |
65 |
61 |
54 |
49 |
36 |
47 |
45 |
41 |
51 |
|
Specific gravity |
1.05 |
1.06 |
1.07 |
1.09 |
1.12 |
1.13 |
1.13 |
1.15 |
1.19 |
1.18 |
|
Abrasion loss /mm3 |
41 |
50 |
39 |
39 |
45 |
58 |
38 |
52 |
72 |
70 |
