About PVB's thermoplasticity

About PVB's thermoplasticity

What is thermoplastic

The object deforms when heated, has certain fluidity after cooling, can be repeatedly heated and plastic, and can be processed by extrusion, injection and blow molding. This property is called thermoplastic.

What is the difference between thermoplastic and thermoset?

The thermoplastic resin can be repeatedly added with thermoplastics after heating, but the thermosetting is no longer fluid after cooling for the first time, and it needs to be plasticized and processed during the first heating.

About the processing characteristics of PVB

Processing Properties

Although PVB resin is a thermoplastic, it has almost no workability before the addition of plasticizers. Once the plasticizer is added, its processability is very easy. PVB can be used with phosphate esters such as TBP, TCP; phthalates such as DOP, DBP, BBP. The use of general coatings and adhesives, through the addition of plasticizers, changes the resin characteristics to meet the application requirements.


PVB is compatible with many resins such as phenolic resin, epoxy resin, alkyd resin and melamine resin. PVB and alkyd resin are partially compatible; generally, PVB is compatible with low molecular weight epoxy resins, while high molecular weight epoxy resins need to select PVB with a high acetal degree to be compatible.