Special Properties Polyurethane Prepolymer High Resilience and Wear Resistant
|FOB Price:||US $1.1-99.9 / kg|
|Min. Order:||1 kg|
|Min. Order||FOB Price|
|1 kg||US $1.1-99.9/ kg|
|Payment Terms:||L/C, T/T, D/P, Western Union, Paypal, Money Gram, D/A|
- Model NO.: HR-711 & HR-712 & HR-713
- Molecular Principal Chain: Heterochain Polymer
- Trademark: sinograce
- Origin: China Anhui
- Synthetic Resin: Unsaturated Polyester Resin
- Color: White
- Transport Package: According to The Customer Demand
- HS Code: 3921199000
Special properties of polyurethane prepolymer with high resilience and wear resistance
The material has high resilience under high hardness.
|Prepolymer||Appearance (25ºC)||Waxy solid||Waxy solid||Waxy solid|
|Using Mixture Ratio (PHR)||13.0~14.5||7.6~8.6||8.6~9.7|
|Life in the Reaction Kettle (75~78ºC/min)||8~10||5~7||6~8|
Physical properties of finished products
|Hardness (Shore D)||90±5||95±5||90±5|
|Tensile strength (MPa)||48.2||57.2||57.7|
|Tearing Strength (kN/m)||112.0||135.7||143.5|
|Elongation at Break (%)||380||498||514|
|Rebound Rate (%)||55||58||58|
-It is mainly used in the production of polyurethane products with high hardness and good elasticity.
Can be used for manual, but also suitable for the operation of pouring machine, chain extender is MOCA or other chain extender.
The prepolymer should be stored at low temperature and dry place, avoid the moisture and moisture when used.
After the opening of the prepolymer should be used up as soon as possible, if not exhausted with nitrogen seal.
The storage period of unopened prepolymer is three months.
If you want to add color paste or other materials, keep the water content below 0.1%, and consider the compatibility of additives.