Momentive LIM™ 6000 series is a family of fast curing and injection moldable liquid silicone rubbers supplied in the form of ready-to-use components (part A and part B).
The product range is specifically engineered to provide high tear resistance and tensile strength for high-speed injection molding processes and applications. The LIM™ 6000 series are excellent performance general purpose liquid silicone rubbers that can be used across many industries, including consumer goods, health care, and general industrial applications.
LIM™ 6000 Key Features and Benefits:
High tear resistance and tensile strength
Improved adhesion to a wide variety of substrates, including engineered thermoplastics and metals
Rapid cure speeds for higher productivity
Outstanding thermal stability across a wide range of temperatures
The LIM 6000 series is available in hardnesses of 10, 30, 40, 50 and 60 Shore A
Excellent release from metal molds
Sterilizable for use in health care and medical devices
LIM liquid silicone rubbers are supplied in the form of ready-to-use components (part A and part B).
A mixture of (1:1) ratio of the two components is transferred from the original containers to a static mixer or the mixing chamber by hydraulic piston pumps that can be connected by an interlocking system that ensures a 1:1 feed ratio. Color pastes can be fed to the system, then the mixture is injected into the heated mold.
An injection pressure of 50 to 150 bars is ordinarily sufficient for liquid silicone rubber that is typically dependent on the cross-section of the feed channel.
Processing and curing:
The mixture vulcanizes at temperatures of 140-230°C to form a cured silicone rubber within a few seconds depending on the grade. To prevent premature vulcanization in the nozzles and cylinders, cool down the parts with water to a temperature of about 20°C.
During postcuring, it is primarily siloxanecycles that evaporates, leading to a slight loss of weight. It is recommended to maintain a supply of fresh air into the post-curing oven to prevent the formation of flammable air/siloxane mixtures.
Application Examples and Recommended Grades
Sports goggles, rubber masks, camera parts, and coating metal rolls