Technical Parameter Optimization for Straw Fibre Mulching Film Raw Material from Corn Stalk

更新时间:2023-05-28

【摘要】To obtain high quality raw materials,the optimization of process parameters of corn stalk-based raw material for straw fibre mulching film was studied.A central composite design（CCD）methodology of four factors and five levels was applied to determine the effects of four process variables,i.e.,stalk size,soaking time,working temperature and processing speed;the fibre yield,initial beating degree and fibre aspect ratio were selected as the objective functions.Fibre yield higher than 95%,initial beating degree greater than 9°SR and fibre aspect ratio greater than 45 were established as the expected values meeting the technical requirements of manufacturing stalk fibre mulching film.Response surface analysis methodology was employed.As a result,the optimal ranges of process variables were obtained as the following:the stalk size was from 3 cm to 10 cm,the soaking time was 18 h,the working temperature was 80℃,and the processing speed was 107-117 r·min-1.The results could be applied to the design and optimization of the D200 type stalk fibre preparation machine and to the process of making raw materials of corn stalk-based straw fibre mulching film.

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