Introduction
NBR 35‑2 is a micro‑crosslinked powdered nitrile rubber with excellent compatibility with PVC, commonly used as an elasticity modifier for PVC products. When added, it effectively enhances:
Oil resistance
Heat resistance
Cold resistance
Softness and elasticity
Aging and fatigue resistance
In wire and cable applications, P‑NBR 35‑2 provides an internal plasticizing effect, making products softer, more flexible, and improving long‑term stability. Finished products may emit a characteristic odor of nitrile rubber, which is a normal property of the material itself. Origin: China
Physical Properties
| Appearance | White or slightly yellow powder |
|---|---|
| Mooney Viscosity (ML 100 °C 1+4) | 40 – 60 |
| Acrylonitrile Content (%) | 30 – 33 |
| Screening Rate (0.90 mm) | ≥ 98 % |
Applications
NBR 35‑2 is mainly used in:
- Footwear materials
- Oil‑resistant hoses
- Wires and cables
- Sealing strips
- Tubing
- Foamed materials
Typical dosage: 5–30 phr
To prevent powder agglomeration, it is recommended to add PNBR during the cooling stage.
It can also be used in formulations requiring anti‑slip performance.