▎ 摘　　要

NOVELTY - Starch-based alloy environmentally-friendly material comprises 30-60 pts. wt. plant starch, 10-20 pts. wt. plant straw fiber, 1-5 pts. wt. reaction auxiliary agent, 30-60 pts. wt. bio-based resin, 1-5 pts. wt. nanocomposite material, 0.2-1 pts. wt. plasticizer, 0.5-2 pts. wt. lubricant, 5-8 pts. wt. silicon oxide, 8-12 pts. wt. chitosan, and 6-10 pts. wt. rosin derivative. USE - Used as starch-based alloy environmentally-friendly material. ADVANTAGE - The material is economical, saves energy and environmentally-friendly. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the starch-based alloy environmentally-friendly material, comprising (i) placing the plant starch into a dry reactor at 88-92degreesC, adding reaction auxiliary agent, and reacting for 1-2 hours to obtain modified starch; placing the plant straw fiber into a drier, drying at 105-110degreesC for 2-3 hours to obtain dry plant straw fiber with water content less than 3%; (ii) placing modified starch and dried plant straw fiber into a blending machine, adding the bio-based resin, keeping the temperature at 60-70degreesC, stirring under the speed of 150-250 revolutions/minute, blending and modifying for 0.5-1 hours, adding the nano-composite material, plasticizing agent, lubricant, silicon oxide, chitosan and rosin derivative, keeping the temperature at 65-85degreesC, stirring under the speed of 300-1000 revolutions/minute, high speed blending and modifying for 0.5-1 hours, and heating to 30-55degreesC to obtain powder; (iii) adding the powder into the parallel co-direction double-screw machine, cooling the extruded material, melting and granulating in the granulator, where the length-diameter ratio of the parallel co-direction double-screw machine screw is greater than or equal to 52:1, the parameter of the granulator is set as the temperature is 150-170degreesC, the die temperature is 150-170degreesC, and the rotating speed 100-210 revolutions/minute.