MGS EPOXY RESINS

MGS epoxy resins are approved for the production of certificated aircraft parts. The 335 and 285 systems are especially suited for homebuilders because of their long shelf lives, excellent workability, physiological friendliness, adjustable cure rates and excellent static and dynamic strength characteristics. Both systems are available with fast and slow hardeners which can be blended with each other in any proportion to provide the desired working life and cure cycle. Pot lives and working times can be adjusted from fifteen minutes, using the fast hardeners, to six hours, when the slow hardeners are employed. Once the hardeners have been blended, the specified resin to hardener mixing ratio must be maintained. Components of the 335 system should not be mixed with those of the 285 system. With both systems, if only the slowest hardener is used, the cure times should be extended to a few days, otherwise some brittleness may be noted. While room temperature curing results in good properties when the faster hardener combinations are used, some curing at elevated temperatures or post curing will result in the highest achievable strength and Tg, with the slower blends. Even unfavorable low temperature and high humidity conditions in the work environment will not effect the quality of the product and high gloss, uncontaminated, tack free surfaces are achievable every time. The resins do not contain any unreactive dilutants which with many systems result in de-gassing and bubbling of the painted finish. The MGS resins do NOT contain aromatic amines. While proper processing practices should be maintained, the physiological friendliness of these systems have been demonstrated by many years of production experience. The 285 system has slightly higher physicals than the 335 and will also achieve a higher maximum Tg after post curing. While the 335 is more viscous than the 285, after mixing with the appropriate hardeners, their viscosities are comparable. These systems are used in the construction of the Cozy, Diamond, Cirrus and other aircraft. System 285 (Max. Tg 105 C - 110 C) Mixing ratio Pot life Mixed Viscosity 100:50 by volume H285-F 40 min 300-500 cp 100:40 by weight H287-S 4 hours H285 : H287 40 : 60 2 hours System 335 (Max. Tg 75 C - 80 C) Mixing ratio Pot life Mixed Viscosity 100:45 by volume H335-F 15 min 800 cp 100:38 by weight H340-S 6 hours 400 cp H335 : H340 50 : 50 1.5 hours 20 : 80 4 hours

Description Part No. Price Buy L285 MGS EPOXY RESIN 1 GA 01-41000 $137.95 H285F MGS HARDENER QT FAST 01-41005 $32.75 H287S MGS HARDENER QT SLOW 01-41006 $38.50 L335 MGS EPOXY RESIN 1 GA 01-41100 $93.75 H335F MGS HARDENER QT FAST 01-41105 $32.50 H340S MGS HARDENER QT SLOW 01-41106 $31.75