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Non-brominated, Flame-retardant Aerospace Epoxies
Ultra-low Density, PBDE-free Syntactic



Non-brominated, Flame-retardant Aerospace Epoxies Introduced by Huntsman Advanced Materials

LOS ANGELES, May 3, 2005 – To meet stringent European Union environmental directives, Huntsman Advanced Materials has developed a family of bromine-free, one- and two-component epoxy syntactics along with high-performance epoxy laminating systems. The new Epocast® flame-retardant epoxies are formulated without including the chemical components octabromodiphenyl ether (OBDE) and/OR pentabromodiphenyl ether (PBDE). Products that contain these substances at levels of > 0.1 percent can no longer be sold or marketed in Europe. Nearly all of Huntsman Advanced Materials’ non-OBDE/non-PBDE epoxy syntactics and laminating systems are qualified to leading aircraft manufacturers’ specifications governing materials used in the fabrication and repair of aircraft interior components.

According to Chris Mellings, Aerospace Marketing Manager at Huntsman Advanced Materials, “We are pleased to announce our new OBDE- and PBDE-free, flame-retardant epoxies that combine good performance with sound environmental characteristics. The result of several years of research, Epocast® non-brominated syntactics and Epocast® epoxy laminating systems are representative of our continuing effort to provide customers with high-quality, leading-edge products.”

Bromine-free systems that are now part of the Huntsman Advanced Materials product line include:

  • Low-density, two-component syntactics. Epocast® 1618-D/B syntactic is a low-flow paste that is qualified to BMS 5-28, Type 18, Class 1. It features a 15-minute work life, 200°F (93°C) service temperature and 5,000 psi compressive strength. In addition, low-density, non-brominated Epocast® 1633 syntactic products are now available in four different colors and are qualified to both the BMS 5-28, Type 18, Class 2 and AIMS 08-08-001-04 specifications. Epocast® 1633 syntactic products have a 2-5 minute work life and exhibit a compressive strength of 6,500 psi.
  • High-density, two-component syntactic. Epocast® 1636-A/B epoxy paste is qualified to the BMS 5-28, Type 6 specification. It has a two-hour work life, 350°F (177°C) service temperature and 15,000 psi compressive strength.
  • Ultra-low density, one-component syntactic. Epocast® 1610-A1 is qualified to the BMS 5-28, Type 10 specification and features a 30-day work life, a 200°F (93°C) service temperature, and a compressive strength of 2,400 psi.
  • Medium-density, one-component frozen syntactic. Epocast® 1614-A1 epoxy paste is qualified to BMS 5-208, Type 14, Class 1 and Class 2 as well as PWA 452 specifications. Featuring an eight-hour work life, the syntactic has a service temperature of 350°F (177°C) and compressive strength of 14,500 psi.
  • High-strength, one-component frozen syntactic. Epocast® 938-A1 syntactic is qualified to BMS 5-28, Type 13 and Type 12, Class 1 and Class 2 specifications. It has a 24-hour work life, a service temperature of 350°F (177°C) and compressive strength of 25,500 psi.
  • Epoxy laminating systems. Epocast® 50-A1/Hardener 946 and Epocast® 50-A1/Hardener 9816 epoxy laminating materials are qualified to BMS 8-201, Type 4 and Type 3 specifications respectively. They both have a service temperature of 200°F (93°C). The fast-setting Epocast® 50-A1/Hardener 946 system features a 15- to 20-minute work life; the slower system, Epocast® 50-A1/Hardener 9816 epoxy laminating material, has a two-hour work life. Both products have compressive strengths of 45,000 psi.

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Ultra-low Density, PBDE-free Syntactic Available from Huntsman Advanced Materials

LOS ANGELES, May 3, 2005 – An ultra-low density, two-component syntactic has been added to Huntsman Advanced Materials’ family of epoxy syntactics that are formulated with non-brominated flame retardants. Epocast® 1629-A/B epoxy syntactic, like other lightweight syntactics in the Huntsman product line, is selfextinguishing and is designed for use in edge reinforcing honeycomb structures used in aircraft interiors. The new product is formulated using an alternative to octabromodiphenyl ether and pentabromodiphenyl ether flame retardants which are the polybrominated diphenyl ethers (PBDEs) that have been banned from use in Europe.

Epocast® 1629-A/B epoxy syntactic paste exhibits physical performance properties comparable to those of conventional ultra-low density syntactics produced by Huntsman Advanced Materials (see Figure 1). The new product has a 70-minute gel time at room temperature; it can be cured at room temperature for 48 hours or for five hours at 125°F (52°C) after a room temperature gel. The cured epoxy syntactic is easy to sand and machine and has a compressive strength of 3,000 psi.

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