How does dibenzoylmethane act as a stabilizer in the process of manufacturing PVC plastics?

Dibenzoylmethane is a commonly used heat stabilizer that can be used to make PVC plastic. In the production process of PVC plastic, adding dibenzoylmethane can effectively prevent PVC plastic from decomposing under high temperature conditions, so as to maintain its stability and durability. The mechanism of action of dibenzoylmethane is to inhibit the degradation of PVC molecules by capturing free radicals and preventing their further reaction. In addition, dibenzoylmethane can also protect PVC plastic from UV rays and oxidation, prolonging its service life.