Our microcellular polyurethane foam system is a two-component material (A-1170 polyol + B-6003 isocyanate) cast into shock-absorption blocks and vibration-damping parts. The fine microcellular structure gives it excellent energy absorption, high rebound and long fatigue life — lightweight yet durable cushioning for vibration dampers, motor mounts, anti-vibration pads and impact bumpers, with hardness and damping tunable to your load and frequency.
A 60–90
Hardness Shore A
35–55%
Rebound resilience
10⁶–10⁷
Fatigue life cycles
< 25%
Compression set (70 °C / 22h)
tan δ 0.1–0.3
Tunable damping
Key Features
Excellent shock absorption Microcellular structure absorbs impact and vibration energy for quieter, smoother operation.
Tunable damping vs rebound Damping factor tan δ 0.10–0.30; choose high-rebound (35–55%) or controlled-damping variants.
Long fatigue life 10⁶–10⁷ cycles under typical cyclic loading for durable, long-service parts.
Lightweight microcellular foam Lower weight than solid rubber/elastomer at the same cushioning performance.
Wide service temperature Performs from −40 °C to +120 °C with low compression set for dimensional stability.
Customizable formulation Hardness, density and damping tuned to your load, frequency and part. OEM/ODM supported.
Also used for: motor & equipment mounts, conveyor anti-vibration pads, machinery isolators, stamping-press cushion pads and impact bumpers for material-handling equipment.
Technical Specifications
Property
Typical Value
Material type
Microcellular PU foam (2-component)
System
A-1170 polyol + B-6003 isocyanate
Hardness
Shore A 60–90 (tunable)
Density
Customizable (microcellular)
Rebound resilience
35–55%
Damping factor (tan δ)
0.10–0.30 (tunable)
Compression set
< 25% (70 °C / 22h)
Fatigue life
10⁶–10⁷ cycles
Operating temperature
−40 °C to +120 °C
Typical values, tunable by formulation; for reference only, not a binding specification. Full TDS on request.
Processing & How to Use
1
Prepare Condition the A-1170 polyol and B-6003 isocyanate; prepare the block/part mould.
2
Mix & cast Meter and mix the two components, then cast into the mould using suitable casting equipment.
3
Foam & cure The microcellular foam rises and cures to the target density and hardness in the mould.
4
Demould & finish Demould the shock block; trim or finish as required for the final part.
Packaging, Storage & Handling
Packaging Polyol and isocyanate supplied in iron drums; palletised for export. Bulk volumes on request.
Storage Store sealed in a cool, dry, ventilated area away from moisture. Shelf-life details on request.
Handling & Safety Avoid eye/skin contact; wear safety glasses. Wash skin with soap and water; flush eyes with water and seek medical attention. Full MSDS on request.
Why BlendPolyol
10+ years in PU raw materials Specialised blended-polyol manufacturer serving foam producers worldwide.
Custom formulation Hardness, density and damping tuned to your load, frequency and part design.
Batch-consistent quality Every batch tested in-house; TDS, MSDS and COA provided with shipment.
Global export & fast reply Export to EU, Latin America, Asia and beyond — we respond within 24 hours.
From Sample to Bulk Order
1. Request a sample Share your load, frequency and hardness target — we send a sample with TDS & MSDS.
2. Validate on your mould Trial the system; we tune hardness, density and damping to your part.
3. Scale to bulk Confirm the formula and order in bulk with flexible MOQ and tiered lead times.
Frequently Asked Questions
Is the shock block a foam or a solid elastomer?It is a microcellular PU foam — a fine closed-cell foamed structure that is lighter than solid rubber/elastomer while delivering high energy absorption and rebound.
How do I specify damping vs rebound?Choose high-rebound (35–55%) for vibration isolation where energy return matters, or controlled-damping (tan δ 0.20–0.30) where energy dissipation is the goal. Share your loading frequency and amplitude and we recommend a formula.
What hardness range is available?Typically Shore A 60–90, tuned via formulation to match your load and part geometry.
Can the formulation be customized?Yes. Hardness, density and damping can be tuned to your application. OEM/ODM supported — request a TDS, MSDS and sample; we reply within 24 hours.
Need PU foam for shock-absorption blocks?
Get a tailored quote, full TDS & MSDS, and a sample for mould validation.
✓ Custom formulation✓ TDS · MSDS · COA✓ Reply within 24 h
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