Recognizing the growing variety of ESD resins available, Mechnano conducted an analysis of several rigid ESD resins designed for vat photopolymerization. This report delves into the unique characteristics of each material and evaluates their ESD performance.

One of the reasons to use Vat Photopolymerization is its ability to fabricate components with intricate details and small features. (A) and (B) is microscopy of the part fabricated using FFF; (C) and (D) microscopy images of the part fabricated using Vat

Experimental Methodology
For this analysis, four commercially available rigid ESD (Electrostatic Discharge) resins were selected and compared against Mechnano’s Formula1B rigid ESD resin, setting the stage for a thorough evaluation of performance and quality. The assessment process was multi-faceted, employing several key methodologies:

  • Optical Microscopy Analysis: the quality of dispersion within each resin was closely examined.
Optical microscopy images of the ESD resins showing the differences in dispersion quality of the conductive filler.
  • Part Fabrication: test components were manufactured using each resin to allow for a practical, real-world assessment of their performance and characteristics.
Screenshots of the part orientation on the build platform used for this study.
  • Surface Resistance Measurements: Surface resistance measurements were performed to assess the ESD properties of each resin, generating definitive data on their effectiveness in dissipating static electricity.
Surface resistance data collected from SMD carriers. The bar charts show the number of readings observed in various ranges of surface resistance. Red area encompasses readings outside of the ideal ESD range.

Following these initial evaluations, the team focused on the resins that successfully passed the ESD testing criteria. These high-performing materials were then subjected to an additional examination:

  • Chemical Resistance: this step was aimed at determining the potential reusability of components made from these resins, an important factor in sustainability and cost-effectiveness in various industries.
Conformal coating caps soaked in HumiSeal S1072 for 10 days. Formula1B (left) not affected by urethane stripper, unlike caps made with Competitor 3 ESD resin (right).

Conclusions

When selecting ESD resin, it is crucial to carefully consider the wide range of options available on the market, as not all of them meet the necessary performance standards required for effective electrostatic discharge protection.

This study aimed to provide a thorough comparison between Mechnano’s Formula1B rigid ESD resin and other well-established market alternatives, assessing them across several critical parameters. This comparison offers valuable insights into how Formula1B performs in relation to other resins, helping industries make informed decisions when selecting materials for ESD protection. The findings of this study could have far-reaching implications for industries that rely on high-performance ESD materials, offering a potential pathway to more effective, reliable, and sustainable options.

Click the link below to download the full case study. To learn more about Mechnano’s technology and ESD materials options for AM, contact us online.

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