Solid Tyres For Shared Scooters
1. Durability Test Conditions For Shared Scooter Tyres
To evaluate the long-term durability of the tire under repeated loading and obstacle impact, Aleader conducted a controlled durability test using defined load, speed, obstacle and operating-cycle conditions.
The test was performed under the following conditions:
- Obstacle block: 10 mm × 5 mm
- Single-wheel load: 65 kg
- Test speed: 25 km/h
- Running time per cycle: 2 hours
- No-load interval: 0.5 hour
- Target accumulated distance: 3,000 km

2. PU Filled Rubber Tires Under the Microscope
SEM Analysis of PU Foam Structure
The mechanical behavior of a PU filled tire is closely related to the cellular structure of its polyurethane filling.
Aleader uses scanning electron microscopy (SEM) to examine the internal structure of PU materials used in its tires.
SEM images reveal an open-cell polyurethane structure with a relatively uniform distribution of cellular pores. In the observed material, most pore diameters are concentrated in the range of approximately 50–100 μm.
This microstructure provides useful information for material development and quality evaluation.

Why Cell Structure Matters
A polyurethane foam is not simply a solid material with air inside. Its mechanical response depends on the polymer network and cellular architecture.
When a tire is subjected to load, the PU filling undergoes compression and deformation. When the load is reduced, the cellular structure recovers toward its original shape.
The resulting tire behavior is influenced by factors including:
- Cell size
- Cell distribution
- Cell-wall structure
- Foam density
- Polymer formulation
- Hardness
- Compression behavior
- Temperature
- Loading frequency
For this reason, two PU materials with similar nominal density can exhibit different performance under repeated loading.
SEM analysis therefore provides a useful material-level reference when combined with physical and durability testing.

3. About Aleader Tire - PU Solid Tire Manufacturer

Founded in Xiamen in 2015, Aleader has established a production base in Longyan, China.
Aleader specializes in the R&D and manufacturing of polyurethane products, with applications covering mobility equipment, rehabilitation products, specialty equipment and other industries.
Our product portfolio includes:
PU microcellular solid tires
PU filled rubber tires
High-resilience polyurethane products
Integral-skin foam products
PU sponge materials
PU rigid foam inserts for carbon-fiber wheelchairs
Aleader is supported by a technical team with more than 20 years of experience in polyurethane R&D and product development.
The company's capabilities cover polyurethane material development, product design, manufacturing process control and finished-product testing.
Material and Manufacturing Control
For PU filled tire production, consistent performance depends on controlling the material and manufacturing process from raw materials through finished products.
Relevant process controls may include:
- Raw material inspection
- Polyurethane formulation control
- Mixing ratio control
- Foaming process control
- Mold and process parameter control
- Tire dimensional inspection
- Finished-product inspection
- Durability and performance testing
This process-based approach allows material characteristics and finished tire performance to be evaluated as part of the same product development system.

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