▎ 摘　　要

NOVELTY - Halogen-free flame retardant masterbatch comprises 40-50 pts. wt. nylon 6, 10-20 pts. wt. glass fiber, 4-10 pts. wt. interface directing agent, 5-11 pts. wt. graphene carrier, 6-10 pts. wt. shell powder flame retardant, and 1-3 pts. wt. lubricant. The preparation of shell powder type flame retardant includes (i) passing shell powder into deionized water for ultrasonic dispersion for 10-20 minutes, the ultrasonic power is 100-500 W, washing with water, drying, and grinding to 100-200 meshes, then adding to 10-20 pts. wt. barium nitrate solution with a mass ratio of 5%, 1-5 pts. wt. cetyl trimethyl ammonium bromide, 1-2 pts. wt. n-octyltriethoxysilane in a modified liquid, stirring, washing with water and drying to obtain modified shell powder, (ii) mixing flame retardant and modified shell powder in a mass ratio of 1:3 to obtain a composite agent, and (iii) passing compounding agent into ethanol solvent with a total amount of 3 times. USE - The halogen-free flame retardant masterbatch is useful in electronics, electrical appliances and communications (claimed). ADVANTAGE - The masterbatch: provides glass fiber reinforced nylon with improved flame retardant effect and auxiliary flame retardant effect. DETAILED DESCRIPTION - Halogen-free flame retardant masterbatch comprises 40-50 pts. wt. nylon 6, 10-20 pts. wt. glass fiber, 4-10 pts. wt. interface directing agent, 5-11 pts. wt. graphene carrier, 6-10 pts. wt. shell powder flame retardant, and 1-3 pts. wt. lubricant. The preparation of shell powder type flame retardant includes (i) passing shell powder into deionized water for ultrasonic dispersion for 10-20 minutes, the ultrasonic power is 100-500 W, washing with water, drying, and grinding to 100-200 meshes, then adding to 10-20 pts. wt. barium nitrate solution with a mass ratio of 5%, 1-5 pts. wt. cetyl trimethyl ammonium bromide, 1-2 pts. wt. n-octyltriethoxysilane in a modified liquid, stirring, washing with water and drying to obtain modified shell powder, (ii) mixing flame retardant and modified shell powder in a mass ratio of 1:3 to obtain a composite agent, and (iii) passing compounding agent into ethanol solvent with a total amount of 3 times, and adding polyethylene glycol with a total amount of 10-20% of the total amount of ethanol, and stirring mixture until sufficient, washing and drying to obtain shell powder type flame retardant, where the flame retardant is prepared by mixing ammonium polyphosphate and tricresyl phosphate in a mass ratio of 1:3. An INDEPENDENT CLAIM is also included for preparing halogen-free flame retardant masterbatch comprising adding raw materials to mixer for mixing treatment, mixing, and passing to twin-screw extruder for extrusion to obtain halogen-free flame retardant masterbatch.