Autonomous Delivery Robots: Durable Rubber Tires for Urban Terrain Navigation
Problem Statement
Autonomous delivery robots require tires that withstand urban terrain challenges: abrasive surfaces, temperature fluctuations (-20°C to 60°C), and exposure to oils, water, and detergents. Standard EPDM tires fail due to poor oil resistance, while NBR tires degrade in UV exposure.
Material Science Analysis
EPDM lacks polar groups, making it susceptible to oil swelling. NBR’s nitrile content provides oil resistance but suffers from UV degradation due to unsaturated double bonds. HNBR (Hydrogenated Nitrile Butadiene Rubber) combines oil resistance with UV stability. Its saturated backbone reduces oxidative degradation, while hydrogenation improves thermal stability.
Technical Specs
- Material: HNBR
- Shore A Hardness: 70 ± 5
- Tensile Strength: 25 MPa
- Elongation at Break: 300%
- Temperature Range: -30°C to 150°C
- Compression Set: 15% (22 hours at 100°C)
- Chemical Resistance: Excellent against oils, detergents, and UV exposure.
Material Comparison
| Parameter | HNBR | EPDM | NBR |
|---|---|---|---|
| Shore A Hardness | 70 ± 5 | 65 ± 5 | 75 ± 5 |
| Tensile Strength (MPa) | 25 | 18 | 22 |
| Elongation at Break (%) | 300 | 350 | 250 |
| Temperature Range (°C) | -30 to 150 | -40 to 120 | -20 to 100 |
| Compression Set (%) | 15 | 20 | 25 |
| Oil Resistance | Excellent | Poor | Good |
| UV Resistance | Excellent | Good | Poor |
Standard Compliance
RubberQ’s IATF 16949-certified process ensures batch-to-batch consistency. HNBR formulations comply with ASTM D2000 for material callouts and ISO 3601 for sealing performance. Adhesion testing follows ASTM D429 for rubber-to-metal bonding integrity.
CTA
For custom material compound development or IATF 16949 documentation, consult RubberQ’s engineering department.
技術アップデートを購読
材料知見とエンジニアリング事例をメールで受け取れます。
関連記事
2026年4月05日
Liquid Silicone Rubber (LSR) Tooling: Why Initial Investment Pays Off in Precision.
Liquid Silicone Rubber (LSR) Tooling: Why Initial Investment Pays Off in Precision Problem Statement High-cycle manufacturing of precision components, such as EV battery seals and AI server gaskets, demands materials with exceptional dimensional stability and chemical resistance. Traditional elastomers like EPDM and NBR often fail under extreme thermal cycling and aggressive chemical exposure, leading to […]
記事を読む2026年4月05日
High-Tonnage Vulcanization: Managing Large-Scale Industrial Rubber Components.
High-Tonnage Vulcanization: Managing Large-Scale Industrial Rubber Components Problem Statement Large-scale industrial rubber components, such as conveyor belts and hydraulic seals, face premature failure under high-tonnage vulcanization. Common issues include chemical degradation at temperatures exceeding 200°C and compression set failure during high-pressure cycles. Material Science Analysis Standard EPDM polymers fail under extreme heat due to their […]
記事を読む2026年4月05日
Commercial Aircraft Interiors: Meeting Smoke and Toxicity Standards (FST).
Commercial Aircraft Interiors: Meeting Smoke and Toxicity Standards (FST) Problem Statement Polymer components in aircraft interiors must pass FAR 25.853 flammability tests while maintaining mechanical performance. Standard EPDM fails at 180°C with toxic smoke emission (HCN >100 ppm). Material Science Analysis Chloroprene rubber (CR) releases HCl gas during combustion. Fluorosilicone (FVMQ) provides superior thermal stability […]
記事を読む