Applications of Solvay Zeosil 1085GR Next-Gen Granular Silica for Green Tires in Industrial Manufacturing

Solvay Zeosil 1085GR delivers high-dispersion silica technology optimized for a new generation of low rolling resistance and energy-saving tires. Advance your tire formulations with a material proven to meet the critical quality, regulatory, and technical requirements of leading automotive OEMs and major tire brands worldwide. Explore industry-specific application scenarios where manufacturers demand superior wet grip, mileage, and sustainability without compromising on process performance.

1. Passenger Car Green Tire Tread Compounding

Tire producers incorporate Zeosil 1085GR as a reinforcing filler for tread formulations targeting improved fuel economy and reduced CO₂ through lower rolling resistance, all while meeting strict wet grip and abrasion resistance targets. It enables high-loading silica systems compatible with organosilane coupling agents, supporting compliance with both current and future tire labeling regulations in major global markets.

Industry compliance standards

• EU Tire Labelling Regulation (EU) 2020/740
• UNECE Regulation No. 117 for wet grip, rolling resistance & noise
• ISO 23671:2021 — Wet grip test protocols
• REACH Regulation (EC) No 1907/2006 for chemical safety

Typical usage ratio

• 45–80 phr (parts per hundred rubber) depending on performance targets and polymer selection. Higher ratios for ultra-low rolling resistance; lower if combined with carbon black or for lower segment tires.

Downstream process integration

• Silica added during the Banbury or internal mixing stage after elastomer mastication. Coupling agent is added sequentially to maximize silanization. Dispersion quality depends on specific mixing time, rotor speed, and temperature control to maximize reinforcement and minimize premature crosslinking.

Final product types

• Summer, all-season, and eco-friendly passenger tire treads
• OEM low rolling resistance tire lines
• Replacement tires for electric and hybrid vehicles

2. Truck and Bus Radial Tire Compounds

Major TBR producers use Zeosil 1085GR to engineer compounds for tire shoulders, treads, and sidewalls that demand high mileage, cut and chip resistance, and wet performance under severe service conditions. The product addresses regulatory demands for energy consumption and enables longer retreading intervals for commercial vehicle manufacturers.

Industry compliance standards

• FMVSS 119 (US DOT regulations for truck tires)
• ECE Regulation No.54 (Truck and Bus tires in EU)
• ISO 28580: Rolling resistance test method
• Industry sustainability pledges (ETRTO, Goodyear Better Future, Bridgestone E8 Commitment)

Typical usage ratio

• 30–60 phr, precisely adjusted versus load index, required heat build-up, and target fleet mileage in different global regions.

Downstream process integration

• Incorporated in multi-stage mixing cycles, often with coupling agents added separately to manage viscosity and reaction heat. Process tuning focuses on dispersion and final compound viscosity to ensure extrusion and calendering performance meets large-scale manufacturing throughput.

Final product types

• Long haul and regional truck tread compounds
• City bus tires with high mileage and wet traction requirements
• Winter commercial treads requiring silica-based compounding for ice grip

3. High-Performance SUV and Light Truck Tire Formulations

Leading manufacturers of premium SUV and Crossover tires use this premium silica to meet stringent demands for wet grip, comfort, and abrasion resistance. The compound design with granular silica contributes to sustained handling and braking even under high load index ratings and variable climates.

Industry compliance standards

• UNECE Regulation No. 117 sound and wet grip classifications
• SUV OE fitment standards (BMW, Mercedes-Benz, Toyota, Ford specifications)
• SAE J1269: Rolling resistance measurement for passenger and light truck tires
• ISO 10191: Tire strength and plunger energy

Typical usage ratio

• 35–70 phr formulated based on target tread pattern rigidity and performance grade, with higher loadings for ultra-high-performance segments.

Downstream process integration

• Silica is metered during the masterbatch stage along with functionalized polymers and highly dispersible coupling agents. Post-mixing sheeting processes control heat history to prevent scorching in large tread cross-sections typical of SUV fitments.

Final product types

• High-performance SUV and CUV treads
• All-terrain light truck tires
• OE and aftermarket fitments for European, Asian, and North American vehicles

4. Tire Sidewall and Apex Rubber Compounding

Tire factories utilize this silica grade in rubber compounds for sidewalls, bead fillers, and apexes to improve resistance to ozone cracking, flex fatigue, and dynamic aging—supporting both safety and branding opportunities in visible tire sections. The granule design minimizes dust and ingredient loss during bulk mixing.

Industry compliance standards

• SAE J2979: Tire sidewall durability testing
• ISO 13226: Ozone resistance of vulcanized rubbers
• Global OEM visual and sidewall branding standards
• REACH Annex XVII for restricted substances in tire rubber

Typical usage ratio

• 15–35 phr depending on visible surface finish, sidewall thickness, and desired crack resistance. Lower ratios support soft branding or colored sidewalls; higher for structural apexes in heavy vehicles.

Downstream process integration

• Silica is added after initial filler loading to mastered or mill batches, mixed through kneader to achieve surface finish and elongation requirements. Careful temperature ramping and controlled moisture drive-off are required to guarantee interface adhesion with colored or white rubber components.

Final product types

• Sidewall rubber for radial tires
• Apex/Bead and chafer rubber in truck/bus and agricultural tires
• Whitewall and colored sidewall tires for export markets

5. Green Tire Manufacturing for Electric Vehicle Applications

Tier-1 suppliers for leading EV makers require specialty silica-augmented rubber to deliver low rolling resistance, electric-motor torque handling, and reduced tire mass—challenges addressed with high-dispersibility silica. This drives lower battery consumption and extends range, as demanded by automotive OEM tender requirements.

Industry compliance standards

• Globally harmonized tire labelling (Japan, EU, US labeling for energy efficiency)
• GB/T 25093 (China Rolling resistance and energy labeling)
• OEM-specific EV tire compound release requirements (VW, Tesla, BYD, GM)
• RoHS and ELV directives on hazardous substances

Typical usage ratio

• 55–85 phr, determined by targeted rolling resistance coefficients (RRC) and balance between wear, acoustic, and torque transmission needs of EV-specific treads.

Downstream process integration

• Silica is introduced in the initial mixing stage, in combination with silane and low-viscosity polymers, under tight temperature and humidity controls to minimize batch-to-batch variation in finished tire rolling performance.

Final product types

• Original equipment EV tires for passenger and light truck markets
• Aftermarket EV replacement tires with green labeling
• Low mass tires for electric range extension