What can be used to stick metal and silicone tightly?

1. Silicone Glue (Room Temperature Curing)

Suitable Applications: Small-area bonding, repairs, and handcrafts.

Recommended Products:

Slow-drying Glue: Such as KN-300 Silicone Soft Glue is flexible, waterproof, and heat-resistant (-50°C to 200°C), making it suitable for applications requiring elasticity and sealing. It cures at room temperature for easy handling.

Quick-drying Glue: Such as KL-363 Quick-drying Glue offers fast positioning (10 seconds), low whitening, and is suitable for small-area bonding. Applications: Suitable for bonding PVC scalp to hair, as well as metal and rubber materials. This colorless, transparent liquid has a surface-drying time of 10-15 seconds and a full-drying time of 8-10 hours. Features: Quick-drying, strong penetration, excellent adhesion, and a wide range of applications.

Key Operation Instructions:
Clean the metal surface (remove oil and dust).
The metal surface can be sandblasted or roughened to enhance adhesion. After evenly applying the glue, gently press and secure for 5-15 minutes (slow-drying) or 10 seconds (fast-drying).
2. Silicone Hot Vulcanization Bonding (Heat and Pressure Curing)
Applicable Scenarios: Industrial production, large-area bonding, high-strength requirements.

Applications: Silicone kitchenware, silicone protective film coating, silicone accessories, etc.

Product Features: Addition-type, peroxide-type hot-vulcanizing adhesive for bonding hard substrates such as metal (such as stainless steel, aluminum), terylene, PET (polyethylene terephthalate), sodium-treated Teflon, and plexiglass.

Recommended Product:
Silicone Hot Vulcanizing Agent CL-24S-3 is suitable for hot-pressing unmolded silicone rubber to metal (stainless steel, aluminum, electroplated metal) in a mold.
Key Operation Tips:
The metal surface must be cleaned and coated with a treatment agent (such as a primer).
Bonding is achieved through a hot-pressing process (high temperature and high pressure), resulting in high bond strength and excellent durability. 3. Silicone Metal Treatment + General-Purpose Glue
Applicable Scenarios: Need to improve the polarity of the metal surface and enhance bonding performance.
Recommended Products:
Silicone Metal Treatment (such as K770) activates the silicone surface and enhances adhesion to the metal.
Use with general-purpose glue (such as epoxy or acrylate glue).
Key Points:
Clean the metal surface.
Apply the treatment and allow to dry.
Apply general-purpose glue before bonding.
4. Mechanical Fixing with Glue
Applicable Scenarios: Where extremely high bond strength is required or where thermal expansion and contraction need to be accommodated.
Method:
Design bumps, grooves, or threads on the metal component to create a mechanical bond with the silicone.
Combined with glue for enhanced overall strength.
Notes:
Surface Preparation: The metal surface should be cleaned and degreased, and sandblasted or roughened if necessary.
Glue Selection: Choose the appropriate glue based on the bonding area, temperature resistance, and flexibility requirements. Operating Environment: Ensure the bonding environment is clean and free of dust.
Curing Time: Allow sufficient curing time for the adhesive type (e.g., instant adhesive requires 24 hours to reach peak strength).