TDI 80/20 PPG Prepolymer The Preparation Of PU Bars Raw Material
Price:
FOB Qingdao usd3.0/kg
MOQ:
1mt
Delivery Time:
5-8 work days
Brand:
EXCEEDCHEM
Product Description
TDI 80 Polyurethane Prepolymer Used In The Preparation Of PU Bars
1. Description
This is a TDI-80 based polyether polyurethane prepolymer.
2. Characteristics
- Water resistance
- Low temperature resistance
- Mold resistance
3. Applications
- Roller
- Plate and bar
- Sealing ring
4. Typical properties
| Type | Appearance | Viscosity(mPa.s/85℃) | NCO% | Packing(kg/drum) |
| Liquid | 300-330 | 6.50-6.70 | 20/200 |
5. Operating Procedure
First, the prepolymer should be preheated in 80-85℃. Second, after vacumming, the prepolymer is to be mixed with melting MOCA evenly. Third, with degassing, casting into mould, and vulcanization,and then demould. Lastly, the finished product should be post vulcanized.
6. Reaction parameters
| Item | MOCA (%) | Gel time(min) | Mixing temperature(℃) | Post vulcanization(h) |
| Specification | 18.8-19.2 | 2.5-3 | 80/120 | 10 |
7. Finished products properties
| Item | Hardness(Shore A) | Tensile strength(MPa) | Tear strength(KN/m) | Rebounding(%) |
| Physical properties | 95-97 | 35-36 | 95-100 | 41 |
Similar Products
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Qingdao Exceed Fine Chemicals Co.,Ltd
Location
No.166, Zhengyang Middle Road, Chengyang District, Qingdao City, Shandong Province, China. 266000
Contact Person
Louis.liu