Metal-Polymer Composite with Roughed Surface for Thermal Stress Resistance

The patent applies preliminary action by performing surface roughening treatment on the polymer base before metal layer deposition. This creates a roughed surface with increased surface area and improved mechanical interlocking capability, ensuring that when the metal layer is subsequently deposited, it forms a strong bond that can withstand thermal stress during high-temperature processes. The roughening is done in advance to prepare the surface for optimal bonding without exposing the polymer to damaging temperatures later.

The patent utilizes parameter changes by controlling the surface roughness parameters (Ra, Rz values) of the polymer base through roughening treatment. By optimizing these surface parameters, the bonding interface between polymer and metal is enhanced, allowing the metal layer to adhere strongly even under thermal expansion and contraction stresses during high-temperature processing, thus preventing peeling while maintaining the polymer's integrity.

The patent performs surface roughening treatment as a preliminary action before metal deposition. This pre-treatment creates a roughed surface that enhances mechanical interlocking and chemical bonding between the polymer and metal layers. As a result, lower deposition temperatures can be used, or the metal layer can be deposited more effectively at standard temperatures, avoiding thermal damage to the polymer while ensuring proper metal layer formation.

The roughed surface acts as an intermediary between the polymer base and metal layer. By creating this intermediate rough surface structure, the bonding interface is enhanced without requiring high temperatures for deposition. The rough surface provides mechanical interlocking and increased surface area for bonding, allowing metal deposition to proceed at lower temperatures that do not damage the polymer material.

The patent applies preliminary surface roughening treatment to the polymer base before metal deposition. This pre-treatment creates a roughed surface with increased surface area and improved mechanical interlocking characteristics. Although this adds a preparatory step, it significantly enhances bonding strength, preventing peeling under thermal stress during subsequent high-temperature processes.

The patent changes the surface parameters (roughness Ra, Rz) of the polymer base through controlled roughening treatment. By optimizing these surface parameters, the bonding interface is enhanced to provide sufficient bonding strength that prevents peeling under thermal stress, while maintaining a relatively simple overall manufacturing process.