12-18 BIW assembly 12. Body Sheet Metal and Paint Repair Manual 12.1.4 Specifications 12.1.4.1 Collision repair materials Generally, body collision accidents may lead to structural deformation, cracking of steel plates, incomplete penetration at welding points, etc., and sometimes may result in local damages to other assembly parts such as the chassis. Adhesives, sealants, anti-loosening agents, surface protection materials, and anti-rust materials may be used for body collision repairs. You should operate in strict accordance with the purpose, scope of application and usage specifications in the product manual when using these materials.
For the purpose of body repairs, repair materials with same functions shall be selected according to the functional requirements of the parts and materials. The following table lists the repair materials that may be used in body repair, it is only used for reference. VOYAH FREE Product Substrate Application Vehicle sealant One-component polyurethane It is used for bonding body panels, interiors and exteriors, body structures and other components. This kind of sealant shall have strong adhesion and cohesion to ensure good adhesion with metals and various paint surfaces.
Seam sealant One-component polyurethane This is a type of curing adhesive used under room temperature for sealing of body welds and fine sealing of doors, engine hood and tailgate hems. - Anti-stone chip primer Rubber and resin This is a type of curing anti-collision sealant used under room temperature for chassis protection; it forms a permanent anti-aging elastic corrosion-resistant protective coating at the underbody and the wheel housings without any cracks at low temperatures. It performs well in rust prevention, sound insulation, stone chip resistance, anti- oxidation, coating protection, etc.
Windshield sealant One-component polyurethane It is a curing polyurethane adhesive used under room temperature for direct bonding and sealing of vehicle window glasses. This adhesive performs well in bonding. It reacts with moisture in the air and then cures to have excellent properties including high strength, aging resistance, vibration fatigue resistance, low temperature resistance, and corrosion resistance, etc. Pressure sensitive tape Acrylic tape It is used for bonding of guard strips, nameplates, protective plates, mudguards, door edge protections, trim strips of the body, etc. This tape must have excellent weather resistance and durability.
Primer - Before applying windshield sealant, primer shall be applied on the body and glass to make the windshield bond with the body firmly. Cleaning agent - It is used to clean all surfaces in contact with primers and adhesives. Heat sensitive tape Acrylic tape It is mainly applicable to rubber sealing strip systems on the vehicle. This type of tape must have strong bonding force and sealing performance to avoid clearances and corrosions caused by weak bonding. Tape primer - The primer is selected according to materials of the bonding surface. The bonding surface must be clean.
After the surface is completely dry, use a brush to apply the primer evenly on the bonding surface, and when the primer dries, attach the tape to the surface. This tape has strong adhesion.