With the requirements of modern rail trains such as lightweight, energy saving and emission reduction, and operational reliability, and the maturity of fiber composite technology, the application of composite materials in the rail transportation industry has been widely recognized and supported. The application market of rail transit is also expanding. In addition to the requirements for mechanical properties, materials for rail transit vehicles must also meet the requirements of corresponding fire test standards. At present, LC New Materials has developed two major flame retardant resin systems: flame retardant epoxy resin prepreg and flame retardant phenolic resin prepreg. The products can meet the highest fire resistance requirements of rail transit DIN5510 and EN45545, and have been used in rail transit products. Get applied.
Rail transit flame retardant epoxy prepreg
LC flame retardant epoxy prepregs include glass fiber system, carbon fiber system (resin LC801) and flame retardant film (resin LC802). The resin system is modified epoxy resin, halogen-free flame retardant and latent curing. Agent combination, has excellent flame retardant properties. The composite material prepared by LC801 carbon fiber prepreg and LC801 flame retardant film has passed DIN5510-2 (2009) test (SGS test): combustion level S4, smoke level SR2, and drip level ST2.
LC801 prepreg can be used to make carbon fiber, glass fiber, basalt fiber, and aramid fiber prepreg. The composite materials produced have excellent mechanical properties. The prepreg can be formed by autoclave or molding process, and the curing temperature is 140 ~ 150 ℃.
LC802 flame retardant adhesive film has good adhesive strength. The curing temperature of the adhesive film is 120 ~ 150 ℃.
Rail transit flame retardant phenolic prepreg
LC flame retardant phenolic prepreg has glass fiber, basalt and carbon fiber systems. It uses Luchen LC806 resin system and has excellent flame retardancy. The composite material products manufactured by LC806 glass fiber prepreg passed the EN45545-2 test (SGS). Flame retardant grades are: R1, HL3 grade. Flame retardant phenolic prepreg can be formed by autoclave or molding process, and the curing temperature is 130 ~ 150 ℃.