Photopolymer: An innovative material for 3D printing

Posted 2025-02-21 12:15:55

Photopolymer, also known as resin, is a light-sensitive liquid plastic that is widely used in stereolithography (SLA) and digital light processing (DLP) 3D printing technologies. When exposed to UV light, photopolymer solidifies and becomes polymerized, allowing objects to be built one ultra-thin layer at a time. This innovative material enables high-resolution and detailed 3D printed parts.

Photopolymer Composition
Photopolymer consists of a mixture of different photocurable liquid components including acrylic monomers, oligomers, photoinitiators and stabilizers. Acrylic monomers such as acrylate esters are the main building blocks that polymerize upon exposure to light. Oligomers serve as linkers between the monomers, while photoinitiators are chemicals like benzophenone that absorb UV light and generate reactive species to trigger the polymerization reaction. Stabilizers help maintain the liquid state of the photopolymer before curing. Together, these substances allow photopolymer to rapidly transform from liquid to solid under defined light conditions.

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