Application of Easmer Oligomers in Photopolymerization 3D Printing

In photopolymerization 3D printing technologies, such as SLA, DLP, and LCD, the formulation of photosensitive resin is crucial as it directly determines the performance of the final printed object. While photoinitiators and reactive diluents receive attention for their roles in controlling curing speed and viscosity, the choice of oligomers (also known as prepolymers) most directly dictates the mechanical properties of the printing material, including its rigidity, toughness, and flexibility.

EASTOMAT offers a variety of high-performance Easmer oligomers that cover the full range of needs from rigid to flexible.

Easmer Oligomer Classification and Applications 

For ease of understanding and selection, Easmer oligomer products can be classified based on their primary performance characteristics. The table below summarizes the core properties and typical applications for each category of oligomer, providing a clear reference for formulation engineers and designers.

1. Rigid Series Oligomers: The Cornerstone for Building Sturdy Models 

In many applications, the primary requirements are strength and hardness. The rigid oligomer series is designed to meet this demand, providing excellent mechanical properties for printed parts.

Easmer UA8312 & Easmer UA8813: Both of these oligomers are known for their high strength and high hardness. Easmer UA8312 is a difunctional polyurethane acrylate prepolymer particularly suitable for hard models like dental molds and figurines. Easmer UA8813 is a trifunctional oligomer with a hardness of up to 85D, good formability, making it an ideal main component or reinforcing additive for rigid resin materials.

Easmer UA8702 & Easmer UA8332: These two oligomers are characterized by their balance of rigidity and toughness. Easmer UA8702 can be used to formulate resin products with high strength and resistance to impact and drops. Easmer UA8332 provides excellent and long-lasting bending toughness to formulations, making the parts less prone to cracking during tapping or drilling, suitable for tough resins like ABS-like materials.

1. Tough Series Oligomers: The Beauty of Balancing Flexibility and Strength 

When a model needs to withstand impact or bending without breaking easily, tough oligomers become especially important.

Easmer UA5023A & Easmer UA2171: These are two difunctional polyurethane acrylate oligomers that offer strong toughness and can achieve large-angle bending. Easmer UA5023A also features high impact resistance and low yellowing, while Easmer UA2171 provides impact resistance and solvent resistance. They are excellent choices for applications that require strong toughness, such as figurines and dental models.

Easmer UA2105 & Easmer UA8322: As an aliphatic oligomer, Easmer UA2105 offers excellent toughness and high elongation, resulting in a slightly elastic surface effect. Easmer UA8322, on the other hand, combines strength with excellent toughness, giving molded parts a cushioning and drop-resistant capability.

1. Flexible, Washable, and Transparent Low-Yellowing Series: Catering to Special Needs 

In addition to rigid and tough materials, EASTOMAT has developed a series of oligomers for specific applications.

Easmer UA8232 (Flexible): This is an oligomer specifically designed for flexible resins, enabling high elongation and a soft, elastic feel with low yellowing properties. It is highly suitable for medical applications like dental gingival masks and pre-operative organ simulations.

Easmer UA7030W (Washable): This 2.5-functional oligomer is highly compatible with water, making printed parts easy to clean while providing balanced mechanical properties. It addresses the performance limitations often found in washable resins.

Easmer UA8192 (Transparent Low-Yellowing): Designed for applications that require high transparency and low yellowing effects. It offers good flexibility and high elongation, with low yellowing after post-processing and quick yellowing fade. It is an ideal choice for producing products like transparent splints.

Conclusion Easmer photopolymerization 3D printing oligomers are more than just a collection of chemical materials; they are key enablers for 3D printing designers and engineers to realize their creative ideas. By accurately understanding and flexibly blending the characteristics of different oligomers, users can easily customize resin materials to meet specific application needs, whether for robust and durable functional parts or for soft and elastic medical models, an optimal solution can be found. This is the value of EASTOMAT as an innovator in the field of photocurable materials.

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