| 摘要 |
PURPOSE: A manufacturing method of a polylactic acid vegetation mat using a biodegradable composite material with polylactic acid is provided to enhance the supporting force of a vegetation ground by suppressing the loss of biodegraded particles. CONSTITUTION: A manufacturing method of a polylactic acid vegetation using a biodegradable composite material comprises: a step of primary compounding 0.5-2 weight% of a biodegradable resin, and 98-99.5 weight% of a resin selected from PBS, PBSA and PBA resin; a step of secondary compounding 90-95 weight% of a polylactic acid resin, and 4-8 weight% of a resin selected from PBS, PBSA and PBA resin, and 4-8 weight% of the primary compounded nanocomposite resin; a step of manufacturing a biodegradable composite fiber by extruding and elongating the biodegradable composite resin; a step of soaking broken stones into a plant-nutrient solution for 30-40 minutes and drying the same; and a step of mixing 40-55 weight% of a biodegradable composite short fiber, 20-30 weight% of natural fiber and 25-30 weight% of the dried broken stone to manufacture a biodegradable composite material. [Reference numerals] (AA) Manufacturing a nanocomposite resin; (BB) Primarily compounding; (CC) Secondarily compounding; (DD) Manufacturing biodegradably composite short fibers; (EE) Introducing fine aggregate; (FF) Mixing; (GG) Introducing natural fibers; (HH) Introducing nutrient supplements; (II) Pressure molding; (JJ) Drawing after cooling and stabilization
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