Planetary mixer VK series

verticalcontinuousbatch

Product Overview
Electronic thermal interface material vertical kneader is an intelligent mixing solution developed by JCT for high‑viscosity, high‑solid‑content thermally conductive composites used in electronics. The system is designed to address extreme viscosity, high filler loading, temperature sensitivity, air entrapment, strict metal‑contamination limits and electrical insulation requirements.

Material & Process Description
Thermally conductive electronic materials are polymer‑based composites made by uniformly dispersing thermally conductive fillers into a polymer matrix (e.g., silicone rubber). They are supplied as pastes, pads, films or solid compounds and include thermal grease, thermal pastes, phase‑change materials, thermal pads and thermally conductive insulators. Filler intrinsic conductivity, filler loading and uniform dispersion determine final thermal performance.

Key Features

• Drive and sealing systems located entirely above the material zone to ensure physical isolation and zero metal contamination risk.
• Capable of processing extremely high viscosities — up to 20,000,000 cP.
• Optional ultra wear‑resistant coatings (tungsten carbide (WC), PTFE, silicon nitride) on blades and barrel interior to resist abrasion from hard inorganic fillers while preserving electrical insulation.
• Planetary/pericentric mixing action eliminates dead zones and ensures uniform dispersion and product consistency.
• Supports very high solid loading (up to 96%) to maximize thermal conductivity of the final product.
• Multiple interchangeable mixing vessels for fast changeover, easy discharge and efficient cleaning.

Model Table (selection)
Columns: Model | Dimension H*L*W (mm) | Weight | Barrel Inner Size D*H (mm) | Full Volume (L) | Useful Volume (L) | Min Volume (L) | Power (kW) | Pericentric Blade Speed (rpm) | Telecentric Blade Speed (rpm) | Revolution Speed (rpm) | Clearance (mm) | Vacuum Abs Pressure (kPa)
VK-10 | 2600*1600*1400 | 2.5t | 300*240 | 16.9 | 12 | 2 | 5.5 | 0~25 | 0~50 | 0~6 | 3±0.5 | <1.5
VK-100 | 3200*2000*1600 | 6t | 600*480 | 135 | 100 | 15 | 22 | 0~25 | 0~50 | 0~6 | 4.5±0.5 | <1.5
VK-500 | 4200*2500*2000 | 12t | 900*800 | 500 | 350 | 60 | 37 | 0~22.5 | 0~45 | 0~6 | 5.5±0.5 | <1.5
VK-1000 | 5100*3000*2500 | 24t | 1200*1100 | 1000 | 600 | 120 | 45 | 0~22.5 | 0~45 | 0~6 | 6±1 | <1.5
VK-2000 | 6000*4200*3000 | 32t | 1400*1300 | 2000 | 1200 | 200 | 55 | 0~20 | 0~40 | 0~6 | 7±1 | <1.5
VK-3000 | 6500*4600*3400 | 35t | 1600*1500 | 3000 | 1800 | 300 | 75 | 0~20 | 0~40 | 0~5 | 8±1 | <1.5
VK-5000 | 7300*5000*3600 | 40t | 1900*1800 | 5000 | 3000 | 500 | 110 | 0~18 | 0~36 | 0~5 | 9±1 | <1.5

Advantages

• Solvent‑free mixing capability for low‑temperature compounding of high‑viscosity materials, reducing energy use and emissions.
• High product purity and uniformity compared with alternative mixing systems.
• Planetary mixing removes dead zones, ensuring consistent dispersion of fillers.
• Enables increased filler loading (up to 96%) to improve thermal conductivity of the compound.
• High throughput with multiple vessels and straightforward discharge/cleaning for batch or continuous workflows.

Notes
Optional degassing/high‑vacuum packages and customizable wear‑resistant coatings are available to prevent metal contamination and preserve electrical insulation characteristics. JCT can supply tailored configurations based on process requirements.

Technical Specifications

• Maximum processable viscosity: up to 20,000,000 cP.
• Series designation: VK series (models VK‑10 to VK‑5000).
• Blade and barrel coatings: tungsten carbide (WC), PTFE (Teflon), silicon nitride options.
• Material‑contact drives and seals: located above the material zone for zero metal contamination risk.
• Vacuum absolute pressure achievable: typically <1.5 kPa (model dependent).
• Blade speed ranges (pericentric/telecentric/revolution) vary by model — see model table for rpm ranges.
• Machine dimensions, weights and power ratings vary by model (see model table).
• Designed for high‑solid‑content thermally conductive composites (filler loading up to 96%).