Research On The Development And Industrialization Of Environmentally Friendly Flame Retardant ABS Resin

The research on the development and industrialization of environmentally friendly flame retardant ABS resin is described in this thesis which gives solutions to the technical issues of the ABS flame retarding modification and the industrialized production of the modified ABS resin. This thesis mainly focuses on the following aspects:The process principle and flame retarding principle of the ABS production; the flame retarding modification technique of general ABS0215A; the production technology and the industrialization of the modified product.Based on the ABS plant of Jilin Petrochemical Company, using pilot scale twin-screw extruder research and develop the flame retardant ABS by adjusting the ratio of ABS and SAN powder and adopting the bromide flame retardant complies with ROSH legislation formulated by antimony trioxide as flame retarding system. The result proves that the UL-94can achieve V-0class when Br content is higher than8%; the increase of Sb2O3content can enhance the flame retarding effect but drop the impact strength and by experiment the ratio between Sb2O3and Br is set at1:2; TBBPA flame retardant has excellent flow ability at ABS molding temperature and becomes lubricant between ABS molecules and by adopting it in the development of flame retardant ABS can not only reduce energy consumption but also improve production efficiency; High emulsion power is the preferred toughening agent of flame retardant ABS due to its excellent toughening property; It is proved by experiment that the flame retardant ABS has features of wide-range process capability, stable tensile and flexible strength under different processing conditions and the impact strength can be enhanced by adjusting the screw rotation speed to an appropriate value with the same feeding rate.The stability test result indicates that the process requirement for pilot scale production is as following:extruding temperature:180℃; Screw rotation rate:220-240rpm; Feeding rate:90Kg/hr (Note:To avoid the melting product blocking the feed inlet, the extruder feed inlet temperature should be set at170℃). The production process parameters are stable and ease to control, product owns high standard of quality and stability whose impact strength and distortion temperature etc. are markedly higher than the expected parameters. The industrialized production can be implemented.