Polyurethane elastomer, also known as polyurethane rubber, belongs to special synthetic rubber and is an elastic polymer material containing many urethane groups in the molecular chain. Polyurethane elastomers are usually prepared from oligomeric polyols, polyisocyanates, chain extenders, crosslinking agents and small amounts of additives. It is the raw material in the polyurethane rubber roller.
Polyurethane rubber rollers have excellent comprehensive properties, and the modulus is between the general rubber and plastic. It has the following characteristics:
1. High strength and high elasticity, can maintain high elasticity in a wide range of hardness (Shore a10-Shore d75)
2. Under the same hardness, its bearing capacity is higher than other elastomers.
3. Excellent wear resistance, 2-10 times that of natural rubber;
4. Excellent oil resistance and chemical resistance;
5. Radiation resistance of aromatic polyurethane
6. Excellent oxygen resistance and ozone resistance;
7. Good anti-fatigue and anti-vibration ability;
8. High impact resistance;
9. Good low temperature flexibility;
Generally, the desired low hardness can be achieved without plasticizers, so there are no problems caused by plasticizer migration. Only by knowing more about the knowledge of polyurethane rubber rollers can we use and maintain them better.
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