1. Reduce the hardness of polyurethane elastomer for polyurethane wheel components.
Polyurethane has a wide range of hardness, and if you want to increase the friction of the wheel, you can choose polyurethane materials with lower hardness for encapsulation under the condition of meeting the load requirements. The deformation of low hardness wheel components increases after compression, and the contact area with the contact surface also increases, resulting in an increase in the friction force of the wheel components.
2. Roll or hair treatment on polyurethane wheels.
Increasing the roughness of the wheel surface can provide good friction and prevent slipping during use. At present, there are various ways to create patterns or hair on the surface of the wheel components.
3. Increase the width of the wheel to increase its direct contact area with the contact surface after compression.
After increasing the wheel width, the contact area between the wheel and the contact surface increases during use, and the frictional force also increases accordingly.
4. Directly increase the vertical load on the wheels (equipment pressurization).
By increasing the direct load of the equipment (some devices that use pressure springs can increase the spring pressure), the vertical load received by the wheel is increased, thereby increasing the deformation of the wheel and the friction force. (This method is suitable for situations where there is a large surplus of wheel load, and the critical ultimate load should be used with caution).
5. Select polyurethane raw materials with high adhesion between their molecules and contact surfaces to make finished wheels.
Polyurethane materials, as synthetic materials, have significant differences in their physical and chemical properties. The adhesion (stress) between different materials and the contact surface also varies. Choosing the appropriate polyurethane material can effectively increase the friction of the finished polyurethane wheel.
