The Optimum Technological Parameters and Properties of LDPE/LLDPE/Nano-Mg(OH)2 Systems
Nano-structured magnesium hydroxide (nano-MH) has been added into LDPE/LLDPE, the technological parameters, flame and mechanical properties, M.F.R. of LDPE/LLDPE/nano-MH samples have been examined. It is indicated two time extruder pelletization is a good technological route, which can make nano-MH disperse evenly in PE. The optimum rotational speed of screws changes from 37 to 42 rad/min, the die pressure changes from 35 to 61.5 bar. Nano-MH has good flame retardant and smoke suppressing properties. The samples added 60% nano-MH can reach UL94 FV-0 flame retardant rating. When nano-MH content is more than 40%, no smoke emits. With nano-MH content increases, the tensile strength, impact strength, elongation and M.F.R decreases, Young’s modulus increases.
Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He
Y. H. Guo et al., "The Optimum Technological Parameters and Properties of LDPE/LLDPE/Nano-Mg(OH)2 Systems", Advanced Materials Research, Vols. 239-242, pp. 437-440, 2011