What are the application scenarios of high-viscosity material sgima mixer kneading machines?

1. New energy materials field (high value-added core scenarios)

Key materials for lithium batteries: positive and negative electrode slurry

II. Polymer Materials and Chemical Engineering (Upgrading Traditional Core Scenarios)

Polyurethane sealant, silicone structural adhesive, glass adhesive, adhesive, silicone rubber, hot melt adhesive, butyl rubber, BMC resin manhole cover, plastic particles

III. Pharmaceutical and food industry (high cleanliness requirements scenarios)

Medical ointment, gel, food gum base (chewing gum / bubble gum)

IV. Children's toy field

Ultra-light clay, foam rubber, space clay, space sand

The kneading machine is an ideal equipment for kneading, mixing, vulcanizing, and polymerizing high-viscosity, elastoplastic materials. It can be used for the production of silicone rubber, sealant, hot melt adhesive, food gum base, pharmaceutical preparations, etc. The kneading machine is a special mixing and stirring equipment. The most commonly used type employs two Σ-shaped blades arranged in a side-by-side tangential differential speed configuration, where one stirring blade rotates faster and the other slower, facilitating the generation of shear force. The different blade speeds enable the rapidly shearing of the mixed material, thereby ensuring uniform mixing.

The Vacuum sigma Kneader mixer is a type of kneading machine primarily used in chemical production fields such as silicone rubber, glass adhesive, butyl rubber, and hot melt adhesive. A kneading machine typically consists of several major components, including the kneading system, vacuum system, heating system, cooling system, and electrical control system.

Key configuration for adapting to silicone characteristics

Rotor configuration:

General-purpose silicone rubber: Z-shaped rotor (dual action of shearing + extrusion), no dead zones in mixing, residual amount <0.1g per batch;

High-viscosity HTV silicone rubber: "Z-shaped + screw composite structure", which improves the dispersion efficiency of silica white by 15% and avoids material accumulation;

LSR liquid silicone rubber: Planetary rotor + wall scraping design ensure uniform distribution of platinum catalyst, with consistent vulcanization and a CV of ≤3.2%.

Cavity material and surface treatment:

Food/Medical Grade: 316L stainless steel with PTFE anti-adhesive coating, featuring an inner wall roughness of Ra≤0.8μm, effectively preventing bacterial harbouring and material adhesion;

Industrial grade: 304 stainless steel, wear-resistant treatment, suitable for high filler silica gel mixing, with a service life of ≥8000 hours.

Sealing system: PTFE composite corrugated tube seal, with a leakage rate of ≤1×10⁻⁵ Pa・m³/s, to prevent contamination of the platinum catalytic system by impurities and ensure the purity of the silicone rubber (VOC emission <50μg/g).

3. Auxiliary system: the core configuration to ensure the quality of silicone

Temperature control system:

High Temperature Vulcanization (HTV) scenario: AI self-tuning temperature control, with an accuracy of ±0.5℃, suitable for vulcanization processes at 120-150℃;

Thermal sensitive scenarios (RTV/LSR): Low-temperature cooling system, temperature control range of 5-30℃, to avoid peroxide residue (DCP residue < 0.1%);

Food/Medical Grade: Temperature control accuracy ±0.3℃ to prevent heavy metal migration caused by high temperatures (lead content ≤0.01mg/kg).

Vacuum system:

Conventional silicone rubber: Ultimate vacuum ≤ -0.098 MPa, remove air bubbles to avoid pores in the rubber layer;

LSR / medical silicone: ultimate vacuum ≤ -0.099 MPa, vacuum recovery time < 90s, residual air bubbles < 0.02%;

Inert gas protection: Optional nitrogen/argon sealing to prevent silica gel from oxidizing and yellowing, enhancing anti-aging performance.