PSBR: Powder Styrene-Butadiene Rubber for Friction Parts, PVC and Profiles
PSBR at a Glance
| Item | Specification |
|---|---|
| Form | Free-flowing, non-agglomerating powder |
| Particle Size | 20–80 mesh |
| Bound Styrene Content | 21.5–35.0% |
| Elongation at Break | >330% |
| 300% Modulus | 10–20 MPa |
| Shore A Hardness | 55–75 |
| Ash Content | ≤3.0% |
| Moisture / Volatile Matter | ≤2.5% |
| Storage | Dry place, protected from moisture and contamination |
Third-Party RoHS Test Result
An SGS test report (No. TSNEC26003792801, dated Aug 13, 2026) shows the tested powder SBR sample meets the EU RoHS Directive (EU) 2015/863. Every restricted substance was not detected.
| Substance | Limit (mg/kg) | Result |
|---|---|---|
| Lead, Mercury, Hexavalent Chromium | 1000 | ND |
| Cadmium | 100 | ND |
| PBB and PBDE | 1000 | ND |
| DEHP, BBP, DBP, DIBP | 1000 each | ND |
ND means not detected. Ask for the full report to check against your own compliance requirements.
Where PSBR is Used
| Application | What PSBR Does | What to Check |
|---|---|---|
| Car brake pads and train brake shoes | Elastic binder-modifier for friction compounds | Friction stability, wear rate |
| Modified PVC materials | Improves toughness and flexibility | Impact strength, surface finish |
| Rubber and plastic profiles | Disperses evenly in profile compounds | Extrusion behavior, hardness |
| Sealing strips and sealing materials | Adds elasticity and recovery | Compression set, hardness |
The fine, free-flowing powder feeds easily and suits a wide range of rubber and plastic systems.
PSBR Buyer Questions
1. Is a hazardous substance test report available for this product?
A third-party test report is available for reference. The provided SGS report covers selected restricted substances under the EU RoHS Directive. The tested sample passed the stated test requirements. Customers with specific compliance needs should the applicable documentation before buying.
2. Do you offer different grades of Powder Styrene-Butadiene Rubber?
Different grades or specifications may be talked about. This depends on application needs, processing methods, and order conditions. Customers can provide their target material properties or end-use information for further evaluation.
3. How do you ensure consistent product quality?
Yudahang focuses on monitoring key specifications during production and supply. Customers with specific needs should confirm the required specifications before buying in bulk. This helps customers choose the right materials.
4. What are the powder characteristics and storage considerations?
Suppliers provide Styrene-Butadiene Rubber in powder form. Store the product in a dry place. Moisture and contamination can harm it over time. Avoid exposure to moisture and contaminants to keep it in good condition.
Start Your PSBR Project
Contact Yudahang for a grade check, bulk quotation and test documents. For buying advice, read the PSBR Synthetic Rubber Powder buyer's guide, or see powdered SBR for plastic modification.
