| • Rubber mixing process | |
| Mixing process | rubber hydrocarbon cracking to produce C5–C12 alkyl olefin (accounting for 40–60%), carbon black dust (D50=0.5–2 μm) and oil mist to form a colloidal aerosol |
| Volatilization of additives | antioxidant (6PPD) releases aniline substances (10–30 mg/m³), plasticizer (DOP) produces phthalates (50–120 mg/m³) |
| • Vulcanization process | |
| Plate vulcanization | tetramethyl Thiuram disulfide (TMTD) breaks down to produce CS₂ (200–500 mg/m³), with NH₃ (30–80 ppm) released |
| Injection vulcanization | peroxide-crosslinker residual tert-butanol (15–45 mg/m³), silane coupling agent releases ethanol (80–150 mg/m³) |
| • Post-treatment section | |
| Trimming process | rubber particles (particle size distribution 10–100 μm) and low molecular sulfur ether (0.5–1.2 mg/m³) mixed discharge |
| Inspection package | Residual N-nitrosamines on the surface of the finished product (0.01–0.05 ppm), with strong carcinogenicity |
