Most of skateboard wheels are made of Castable Polyurethane Resin For Skate Wheel. The reasons that polyurethane remains the performance material of choice for all of the top skateboard manufacturers are multiple and include:
Highly durable and resistant to oxygen, sunlight and general weather conditions.
Good abrasion resistance for a longer life and for sliding.
Great grip with the ground.
High resiliency.
Our Castable Polyurethane Resin For Skate Wheel is easily customisable in shape, size and colour.
Castable Polyurethane Resin For Skate Wheel is an ideal choice for inline skating boots and wheels. Polyurethanes are outstandingly able to withstand more loads than rubber because they are harder than rubber and yet more flexible than plastics. Their flexibility is accountable for their strength and remarkable ability to resist impact.
BQ5631 Castable Polyurethane Resin For Skate Wheel have three components. Component A is polyols. Component B is Pre-polymer ended capping with isocyanate. Component C is curing agent. Castable Polyurethane Resin For Skate Wheel is transparent liquid and have good abrasion, anti-yellow and good rebound property of finished products. Specially used to make skate wheel, skidding wheel and rollers.
Process
Castable Polyurethane Resin For Skate Wheel should be processed by casting machine. Otherwise there will be many bubbles.
In the weighing machine, the chemical components of the polyurethane are combined as ratio.
Add color. When the polyurethane in the metering machine is liquid, add dyes or other types of pigments in the batch. This is only necessary if you want your skateboard wheels to have a color.
Pour the Castable Polyurethane Resin For Skate Wheel into the mold. The mold should be made of aluminum and reflect the shape and size of the wheel.
After the Castable Polyurethane Resin For Skate Wheel has been cured, the wheels are removed from the mold.
Wheel shape. Use a lathe to cut the bullet into shapes.
properties of polyurethane resin
|
Component B |
Type |
BQ5631B |
|
Apprarance |
Transparent colorless liquid |
|
|
Component A/C |
Type |
BQ5631A/BQ5631C |
|
Apprarance |
Transparent colorless liquid |
|
|
Ratio B:A:C (by weight) |
100: (50:10) |
|
|
Operate Temprature (30℃) |
25~35 |
|
|
Gel time (min/30℃) |
2~3min |
|
Property of finished product
|
Appearance |
Transparent colorless elastomer |
|
Hardness(Shore A) |
82 |
|
Tensile strength(MPa) |
14 |
|
Elongation at Break(%) |
500~600 |
|
Tear strength(KN/m) |
55 |
|
Rebound(%) |
60 |
|
Specific gravity(25℃) (g/cm³) |
About 1.1 |
Package and stock
200KG/DRUM.
1. The prepolymer should be stored in a low-temperature and dry place, and avoid moisture and water vapor during use.
2. The prepolymer after opening should be used up as soon as possible. If it is not used up, it is best to seal it with nitrogen.
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