Polyvinyl Butyral (PVB) filament is a versatile and transparent material. One of its standout features is the ease with which it can be smoothed using isopropyl alcohol,
resulting in a glass-like surface. PVB has mechanical properties, similar to PETG, making it both strong and flexible. However it can't handle high temperatures as well
as some other materials like PLA. It has lower temperature
resistance compared to other common filaments like PLA. Printing with PVB usually requires a nozzle temperature of around 190-210°C and a heated bed at 60-80°C.
Printed models made from PVB filament are generally not recommended for outdoor use. PVB is sensitive to moisture and UV light, which can cause it to degrade over time.
Exposure to the elements can reduce its transparency and affect its overall durability.
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As stated from the name, PVB is a type of polymer composed of polyvinyl alcohol (PVA) and butyraldehyde through a condensation reaction. This combination results in a polymer with excellent adhesive properties, optical clarity, and toughness. It is primarily used in safety glass, such as laminated glass in automotive and architectural applications, due to its ability to hold glass pieces together in the event of breakage, preventing shattering. PVB filament in 3D printing benefits from these characteristics, providing transparency and the ability to create smooth, glass-like surfaces after chemical treatment with isopropyl alcohol (IPA).
