MDI and Polyester Prepolymer is a versatile, easy to use system designed for a wide range of polyurethane applications.
Its low viscosity ensures excellent flowability and allows for convenient pouring at room temperature, enabling efficient processing and fast production cycles.
Compared to TDI-based systems, it offers superior mechanical properties including higher tensile strength, tear resistance, and solvent resistance along with outstanding wear resistance.
The MDI and Polyester Prepolymer System consists of four components:
Component A: Isocyanate-terminated prepolymer
Component B: Polyol
Component C: Curing agent (1,4-Butanediol)
Component D (optional): Phenylmercury neodecanoate, used to enhance performance when necessary
properties of MDI and polyester prepolymer
|
Precautions for storage and use |
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|
Item |
Unit |
X3016A |
X3016B |
X3016C |
|
Optimum storage temperature for sealed drums |
|
＜30 |
＜30 |
＜30 |
|
Shelf time(seales drums) |
Month |
6 |
12 |
12 |
|
Preparation before processing |
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|
Preheating time/preheating temperature |
h/ |
12/45 |
24/70 |
12/35 |
|
It needs to be homogenized before processing |
No need |
Need |
No need |
|
|
Need degassing |
Need |
Need |
No need |
|
X3016A/X3016B/X3016C/X3016D Physical properties and usage requirements
|
Item |
Appearance(25℃) |
Viscosity mPa.s |
NCO% |
Relative density at processing temperature/cm3 |
Preheating condition before useh/℃ |
|
X3016A |
Viscous and transparency liquid |
410/50℃ |
16.4±0.2 |
1.15 |
12/45 |
|
X3016B |
White solid |
2000/60℃ |
1.17 |
24/80 |
|
|
X3016C |
Transparency liquid |
20/30℃ |
1.01 |
12/35 |
|
|
X3016D |
Transparency liquid |
X3016A/X3016B/X3016C/X3016D Product processing technology and physical property
|
Hardness |
60A |
65A |
70A |
75A |
80A |
85A |
90A |
95A |
|
X3016A |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
100 |
|
X3016B |
190 |
160 |
130 |
120 |
100 |
80 |
60 |
45 |
|
X3016C |
7.81 |
9.30 |
10.79 |
11.28 |
12.28 |
13.24 |
14.26 |
15 |
|
X3016D/(A+B+C)%Usage |
0.6 |
0.6 |
0.55 |
0.55 |
0.50 |
0.45 |
0.40 |
0.3 |
|
X3016A Mixing temperatures/℃ |
40 |
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|
X3016B Mixing temperature/℃ |
60-75 |
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|
X3016C Mixing temperature/℃ |
35 |
|||||||
|
Mold temperature/℃ |
90-100 |
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|
Gel time min |
6 |
5.5 |
5 |
4.5 |
4 |
3.5 |
3 |
3 |
|
Demold time min |
40 |
35 |
35 |
30 |
30 |
30 |
30 |
30 |
|
Post vulcanization temperature and time |
90℃*16h |
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|
Hardness,A |
60 |
65 |
70 |
75 |
80 |
85 |
90 |
95 |
|
Resilience,% |
50 |
48 |
45 |
43 |
43 |
41 |
40 |
35 |
|
100%Modulus,MPa |
2.4 |
2.8 |
3.7 |
5 |
6.0 |
6 |
8 |
9.5 |
|
300%Modulus,MPa |
2.9 |
4 |
6 |
8 |
10 |
11 |
13 |
16 |
|
Tensile strength,MPa |
36 |
38 |
41 |
46 |
46 |
45 |
44 |
44 |
|
Elongation,% |
630 |
600 |
580 |
570 |
550 |
530 |
520 |
530 |
|
Tear strength (angle),KN/m |
50 |
63 |
80 |
85 |
98 |
105 |
110 |
119 |
|
DIN Abrasion loss,mm3 |
22 |
22 |
22 |
22 |
24 |
26 |
28 |
30 |
Package
20kgs/drum; 200kgs/drum; 1000kgs/IBC.
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