MDI polyurethane prepolymer is a chemical substance and an important raw material for the manufacture of polyurethane materials. It is produced by pre-reacting polyurethane raw materials such as amino acids and alcohols. It is a substance obtained by heating and reacting polyurethane monomers and prepolymerizers at high temperatures. In subsequent processing, this prepolymer can be further processed to generate polyurethane materials with different properties and physical characteristics, such as hard polyurethane or soft polyurethane. It has certain fluidity and curing properties, and is convenient for further processing into various shapes of polyurethane materials.
|
Model |
Polyester MDI type |
||
|
3068 |
3080 |
3085 |
|
|
NCO content % |
6.8±0.2 |
8.0±0.2 |
8.5±0.2 |
|
State of matter at 20°C |
white solid |
white solid |
white solid |
|
Hardener |
BDO |
BDO |
BDO |
|
100g prepolymer curing agent dosage (g) |
6.92 |
8.14 |
8.65 |
|
Prepolymer/curing agent mixing temperature (°C) |
80/40 |
80/40 |
80/40 |
|
Viscosity at 85°C (mpa·s) |
1500 |
1200 |
1100 |
|
Gel time (min) |
5 |
3 |
3 |
|
Post curing time (100℃/h) |
36 |
36 |
36 |
|
Hardness (Shore A) |
85±2 |
92±2 |
95±2 |
|
Tensile strength (mpa) |
45 |
48 |
52 |
|
100% modulus stress (mpa) |
7 |
10 |
12 |
|
300% modulus stress (mpa) |
16 |
18 |
20 |
|
Elongation at break (%) |
600 |
500 |
480 |
|
Right Angle Tear Strength (kN/m) |
85 |
110 |
120 |
|
Pants tear strength (kN/m) |
22 |
40 |
45 |
|
Rebound (%) |
55 |
50 |
48 |
|
Density at 25°C (g/cm3) |
1.25 |
1.26 |
1.26 |
|
DIN wear (cm3) |
40 |
38 |
38 |
|
Acron wear(cm3) |
0.02 |
0.018 |
0.017 |
|
Model |
Polytetrahydrofuran MDI type |
Polycaprolactone MDI type |
||
|
3270 |
3285 |
3575 |
3590 |
|
|
NCO content % |
7.0±0.2 |
8.5±0.2 |
7.5±0.2 |
9.0±0.2 |
|
State of matter at 20°C |
white solid |
white solid |
white solid |
white solid |
|
Hardener |
BDO |
BDO |
BDO |
BDO |
|
100g prepolymer curing agent dosage (g) |
7.12 |
8.64 |
7.63 |
9.15 |
|
Prepolymer/curing agent mixing temperature (°C) |
80/120 |
80/120 |
80/120 |
80/120 |
|
Viscosity at 85°C (mpa·s) |
1100 |
900 |
1200 |
950 |
|
Gel time (min) |
5 |
3 |
5 |
3 |
|
Post curing time (100℃/h) |
36 |
36 |
36 |
36 |
|
Hardness (Shore A) |
87±2 |
95±2 |
87±2 |
95±2 |
|
Tensile strength (mpa) |
45 |
48 |
47 |
50 |
|
100% modulus stress (mpa) |
7 |
12 |
8 |
12 |
|
300% modulus stress (mpa) |
16 |
20 |
18 |
22 |
|
Elongation at break (%) |
550 |
450 |
530 |
430 |
|
Right Angle Tear Strength (kN/m) |
90 |
120 |
90 |
125 |
|
Pants tear strength (kN/m) |
37 |
48 |
42 |
50 |
|
Rebound (%) |
60 |
55 |
55 |
52 |
|
Density at 25°C (g/cm3) |
1.12 |
1.20 |
1.16 |
1.20 |
|
DIN wear (cm3) |
43 |
40 |
40 |
37 |
|
Acron wear(cm3) |
0.02 |
0.016 |
0.018 |
0.015 |
MDI polyurethane prepolymer is a commonly used chemical base material, which is usually used to make polyurethane, which is a polymer material with good properties such as high elasticity, wear resistance, chemical corrosion resistance, insulation and heat insulation.
Application of MDI polyurethane prepolymer:
1. Construction: as insulation and thermal insulation materials, used for insulation of walls and roofs.
2. Automobiles: Used as materials for interior parts such as car seats, doors, trunks, and soundproofing materials.
3. Electronic appliances: as insulation materials for wires and cables.
4. Medical treatment: materials used as medical devices, such as filling materials, surgical instruments, etc.
5. Sports: used as materials for sports equipment, such as diving boards and high jump stands.
Overall, the wide application of polyurethane prepolymers is attributed to its high performance and flexible processability.
Why choose us?
- We are dedicated to building long-term relationships with our clients.
- The company will continue to uphold the concept of technological innovation and endlessness, implement the policy of coordinated development of the entire industry, and further expand its technological and manufacturing advantages.
- We specialize in the production of Cast Polyurethane Resin products.
- We create high quality MDI Polyurethane Prepolymer and services for customers with efficient management, excellent technology and good reputation.
- We are committed to making our products environmentally sustainable.
- We will continue to uphold the attitude of integrity, efficiency, pragmatism and responsibility to provide customers and partners at home and abroad with safer, more stable, more humane and more professional solutions.
- We work closely with our customers to ensure that their needs are met.
- We use the most advanced methods to manufacture MDI Polyurethane Prepolymer, our company will always focus on continuous innovation, intelligent manufacturing and intimate service to achieve shared and win-win development with our customers.
- We are constantly striving to improve our products and services.
- We adhere to our company vision and pursue the realization of personal values and high quality of life to achieve our career goals.
