PU Polyurethane Plastic Rod Diameter 16-300mm

PU Polyurethane Plastic Rod with Excellent Wear Resistance

Material properties: Why choose PU rods?

The core advantage of PU rod lies in its "designability" - by adjusting the raw material formula (such as polyols, isocyanates, chain extenders, etc.) and process parameters, its hardness, elasticity, wear resistance, chemical resistance and other properties can be precisely controlled to meet the needs of different scenarios. Compared with traditional materials (such as PVC, rubber, silicone), PU rod has the following differentiated characteristics:

• High elasticity and tear resistance: The elongation at break can reach 300%-800%, which is much higher than PVC (usually <200%), and the tear strength is excellent, which is suitable for scenes with repeated bending or impact.
• Outstanding wear resistance: The Akron abrasion value (an indicator of wear resistance) is only 0.01-0.03cm³/1.61km, which is 1/3-1/5 of rubber, and it is not easy to wear after long-term use.
• Oil and chemical resistance: It has good resistance to mineral oil, animal and vegetable oils, weak acids and alkalis, etc. (but strong solvents such as acetone may dissolve PU), suitable for oily environments or chemical contact scenes.
• Low temperature toughness: The glass transition temperature (Tg) can be adjusted to below -40°C through the formula, and it still maintains flexibility at low temperatures (better than the problem of PVC becoming brittle at low temperatures).
• Environmental protection: Some solvent-free PU sheets can meet environmental standards such as RoHS and REACH, and can be recycled (thermoplastic PU, TPU).

pu polymer rod

 

Classification dimension           Specific type                                          Hardness range (Shore)                 Typical application scenarios

By hardness                              Soft PU sheet                                         A 10-A 60                                        Anti-slip pads, insoles, sealing strips

                                                  Medium-hard PU sheet                          A 60-A 90                                        Industrial rollers, conveyor belts, buffer pads

                                                  Hard PU sheet                                       D 40-D 80                                       Mechanical parts, gears, wear-resistant linings

By function                               Wear-resistant type                                 A 70-A 90                                        Conveyor belts, mining equipment linings

                                                 High temperature resistant type              A 60-D 80                                       Automobile engine peripheral parts, electronic insulation pads

                                                 (long-term use temperature 80-120℃)  

                                                 Conductive/antistatic type                       A 70-A 90                                        Electronic packaging, semiconductor production line antistatic pads

                                                 (surface resistance 10⁶-10⁹Ω) 

                                                 Food grade (FDA compliant)                   A 30-A 80                                        Food conveyor belts, baking molds

By structure                              Single-layer PU sheet                            Uniform hardness                            Basic protection, decorative purposes

                                                 Composite PU sheets                             Adjustable layered hardness           High-strength conveyor belts, non-slip floors

                                                  (such as PU + fabric/PVC) 

Data Sheet

Properties	Standard	Unit	Test Data
Specific gravity	ISO 1183	g/cm3	1.2
Water absorption	ISO 62	%	0.1-2
Flammability	UL94		HB
Mechancial Properties
Yield stress	ISO 527	Mpa	13.4
Elongation at break	ISO 527	%	330
Tensile modulus of elasticity	ISO 527	Mpa	38.6
Notched impact strength	ISO 179	kJ/m2	No damage
Notched izod impact strength	ISO 180	kJ/m2	No damage
Shore hardness	ISO 868	scale A	88±5

 

PU rods have become an important material in the field of modern industry and consumer goods due to their "customizable performance, wide application scenarios, and high cost-effectiveness". In the future, with the advancement of technology and the upgrading of environmental protection requirements, PU rods will unleash their potential in more high-end fields and continue to promote material innovation in related industries.