EP 137 LOW SMOKE EPOXY PREPREG Low smoke, highly toughened and self-extinguishing epoxy resin system Improved hot/wet stability Controlled resin flow Excellent adhesion to core materials Shop life of 15 days at room temperature, 21ºC (70ºF) Introduction EP 137 prepreg resin system is a 125ºC (257ºF) curing system with a high degree of flame-retardancy and low smoke behaviour. EP 137 also provides excellent properties such as high interlaminar shear strength, adjustable tackiness and flow control during processing. EP 137 is suitable for high performance light-weight composite structures required to meet the highest structural requirements for interior applications. For example, passenger aircraft floors, where EP 137 is used as a top layer to avoid electro-galvanic corrosion of the carbon-aluminium structure and improve overall impact behaviour of the panels. Both monolithic and sandwich structures can be easily manufactured with EP 137 prepreg. The curing can be performed by press, vacuum and autoclave moulding at a temperature range between 120ºC (248ºF) and 155ºC (311ºF) and a pressure of at least 0.7 bar / 10 psi. Such composite structures can be exposed easily to temperatures in the range of -55ºC (-67ºF) up to +90ºC (194ºF).