▎ 摘　　要

NOVELTY - Rigid foam complex plastic micro-foam board obtained by providing 85-93 pts. wt. polystyrene, 1 pts. wt. ethylene vinyl alcohol (EVOH), 0.02-0.3 pts. wt. monoglyceride, 2-7 pts. wt. graphene particles, 1-3 pts. wt. nano-montmorillonite, 1-1.5 pts. wt. phosphate, 5-7 pts. wt. flame retardant, and 8-15 pts. wt. foaming agent, blending the ingredients, mixing, introducing the first extruder for the melt mixing process, achieving preliminary melt mixing within a certain temperature and pressure, introducing the second extruder for low temperature and high pressure conditioning, the static mixing section for further mixing, and the dynamic mixing section for dynamic mixing, and finally extruding through the die to produce a complex plastic micro-foam board. USE - Used as rigid foam complex plastic micro-foam board. ADVANTAGE - The method: has higher foaming density of the molded product, improves the tensile and compressive properties of the micro-foam board; ensures the environmental protection, and the thermal insulation characteristics and heat retardant characteristics; and meets the requirements of energy saving and emission reduction. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for manufacturing a rigid foam complex plastic micro-foam board comprising (1) providing 85-93 pts. wt. polystyrene, 1 pts. wt. ethylene vinyl alcohol, 0.02-0.3 pts. wt. monoglyceride, 4-5.5 pts. wt. graphene particles, 1-3 pts. wt. nano-montmorillonite, 1.0-1.5 pts. wt. phosphate, 5-7 pts. wt. flame retardant and mixing evenly to obtain a mixture, (2) transferring the mixture to the first extruder, and carrying out the initial mixing under the dynamic change of temperature conditions from 180-230 degrees C and pressure conditions from 20-28MPa, (3) injecting 8-15 pts. wt. blowing agent at the end of the first extruder, (4) filtering the mixed materials injected with blowing agent, (5) feeding the processed kneaded materials into the second extruder, and performing low-temperature and high-pressure kneading under the dynamic change of temperature conditions from 180-160 degrees C and pressure conditions from 18-16 MPa, (6) introducing the static mixing section for static mixing, (7) introducing the dynamic mixing section for dynamic mixing, and (8) setting an extrusion die at the end of the second extruder, heating the die to 90 plus minus 5 degrees C, extruding the material through the die under the state of expansion and release pressure of 8-11 MPa, and pressing into a complex plastic microfoam plate.