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U.S. Department of Energy
Office of Scientific and Technical Information

TDI-Free Polyurethane Encapsulants: Alternatives to EN-7/EN-8

Technical Report ·
DOI:https://doi.org/10.2172/2530800· OSTI ID:2530800
 [1];  [2]
  1. Sandia National Laboratories (SNL-CA), Livermore, CA (United States)
  2. Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
This report documents a cross-site effort to identify and evaluate materials that are suitable replacements for the polyurethanes known as EN-7 and EN-8. EN-7 and EN-8 are commercial formulations that contain free toluene diisocyanate (TDI) and which are used as adhesives and as encapsulants in many weapon applications. TDI is an OSHA-regulated volatile diisocyanate and has been targeted for elimination from future weapons use, prompting the need for a TDI-free replacement material.
Research Organization:
Sandia National Laboratories (SNL-CA), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
DOE Contract Number:
NA0003525
OSTI ID:
2530800
Report Number(s):
SAND--2025-02685
Country of Publication:
United States
Language:
English

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