Research on Multivariate Nano-composites for High-speed Train Windshield

The nano-composites were prepared with ethylene-propylene diene rubber (EPDM) and organic montmorillonite(OMMT) nano-composite as basic material, and polyhedral oligomeric silsesquioxane(POSS), aluminium hydroxide(Al(OH)₃), expanded graphite(EG) as additives. The flame retardant properties and mechanical properties were tested by cone calorimeter and smoke density etc. The results showed that, compared with the pure EPDM/OMMT nano-composite, adding POSS,EG and Al(OH)₃ could effectively increase the charring and flame retardant properties. The mechanical properties of nano-composite prepared with EPDM/OMMT/EG or EPDM/OMMT/Al(OH)₃ were reduced. The properties of inner/outer windshield rubber material which was prepared with EPDM/OMMT/EG or EPDM/OMMT/Al(OH)₃ could meet the flame retardant and functional requirements. In addition, the tensile strength, low temperature and retardant performance were more excellent than the foreign samples. At present,the engineering application of multivariate nano-composite in a variety of high-speed train windshield has been realized.