Polybutadiene rubber BR-9000

Description

1. Product Overview

Polybutadiene Rubber BR-9000 is a high-cis, nickel-catalyzed synthetic rubber recognized globally for its outstanding resilience, abrasion resistance, and low heat buildup. It is primarily used in tire manufacturing (tread, sidewall, and carcass) and mechanical rubber goods requiring high dynamic performance. The key value proposition lies in its ability to extend product life under cyclic stress while maintaining predictable processability in high-volume mixing lines. Strategically, BR-9000 remains essential as global demand for fuel-efficient, long-mileage tires and durable industrial components continues to rise.

2. Key Specifications & Technical Characteristics

• Chemical composition: High-cis 1,4-polybutadiene (Ni-catalyzed, cis content ≥96%)

• Purity / grade: Industrial grade, ASTM D3189 compliant

• Physical characteristics: White to off-white bales; Mooney viscosity ML(1+4) 100°C: 45±5; ash content ≤0.3%; volatile matter ≤0.5%

• Density: Approx. 0.91 g/cm³ at 25°C

• Packaging options: 35 kg bales, shrink-wrapped on wooden pallets (1,260 kg net per pallet) or 1.05 MT bale packs

• Shelf life: 12 months when stored in original packaging in cool, dry, well-ventilated conditions below 30°C, away from direct sunlight and ozone sources

3. Core Industrial Applications

• Tire industry (primary): Tread compounds for truck/bus radials (improves cut/chip resistance); sidewalls (enhances flex fatigue resistance); retread materials (ensures adhesion and durability). Outperforms natural rubber and SBR in abrasion resistance by 20–30% under equivalent loading.

• Conveyor belts & mining equipment: Heavy-duty covers and skim coats where impact absorption and wear life are critical. Lower heat generation than NR reduces belt delamination risk.

• Footwear & rollers: Soling compounds requiring high abrasion resistance and resilience. Outperforms BR grades with lower cis content due to better rebound and lower compression set.

• Impact modifiers for engineering plastics: Added to HIPS and ABS to improve low-temperature toughness without sacrificing flow.

4. Competitive Advantages

• Quality consistency: Statistical process control (SPC) across each batch; Mooney viscosity Cpk ≥1.33 ensures predictable mixing cycles and reduced scrap.

• Supply reliability: Dedicated production lines with 50,000 MT annual capacity; safety stock held in three regional warehouses (Asia, Europe, Americas).

• Logistics capability: FCL or break-bulk shipments via container or flexitank; average lead time 14–21 days ex-warehouse.

• Cost competitiveness: Lower price per unit volume than SSBR and NR for equivalent hardness targets; reduced energy mixing due to faster banding on two-roll mills.

• Sustainability / compliance: REACH and RoHS compliant; no zinc oxide required for cure activation in most formulas; lower rolling resistance contribution supports fuel efficiency in tire labeling (EU Tire Label B–C range).

• Technical support: Full SDS, batch certificates, and compounding guidelines available via digital library; application engineering support included for contract volumes.

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): 20 MT (bulk)

• Loading capacity: 25–27 MT per standard 20-foot dry container (depending on bale stacking configuration)