PVC-welding sealant:

PVC welding sealant is polyvinyl chloride paste resin and phthalate plasticizer polymerized by emulsion method or micro-suspension method A paste-like sealant composed of , diluent, tackifier, thixotropic agent, inorganic filler and pigment, and has good thixotropy. After heating and plasticizing, it becomes an elastomer with a certain bonding strength. It has excellent wear resistance, flexural resistance, and chemical resistance. It has good bonding power with electrophoretic primers, epoxy polyamide primers, etc., and is widely used. Sealing of the inner and outer welds of the car body. PVC weld sealant has become an ideal material for car body weld sealing due to its low cost, odorless, non-toxic, good construction process, excellent sealing effect and other good comprehensive properties. It is the most widely used and researched one. Weld sealant.

PVC weld sealant has three main functions on the car body:

①Weld seal The car body cab is made up of many parts welded into a whole, and there are welds at the welds. Seams, apply sealant on the welds to seal the cab and isolate it from the outside world;

② Anti-corrosion effect The welds on the car body are located in the corners and hidden parts of the car body, and are the basis of the car body coating. Weak points are the first to be corroded. After applying a layer of sealant, it is equivalent to adding a protective layer outside the paint coating, which improves the anti-corrosion performance of the paint coating;

③ Applying sealant on the weld during plastic surgery also It can achieve the purpose of flattening the car body and plastic surgery.