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Optimization of technique parameters of pneumatic molding for rice straw bowl tray

文献类型： 外文期刊

作者： Li, Hailiang 1 ; Wang, Chun 1 ; Sun, Haitian 1 ; Zou, Huafen 1 ; Wang, Hongxuan 1 ; Wang, Huiyuan 4 ; Liu, Xinyu 1 ; Yu, Zhenzhen 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, South Subtrop Crop Res Inst, Hainan Prov Key Lab Trop Crop Nutr, Zhanjiang, Peoples R China

2.Henan Agr Univ, Coll Mech & Elect Engn, Zhengzhou, Peoples R China

3.Heilongjiang Bayi Agr Univ, Coll Engn, Daqing, Peoples R China

4.Chinese Acad Trop Agr Sci, Inst Sci & Tech Informat, Haikou, Hainan, Peoples R China

5.Renhe Meteorol Bur Panzhihua, Panzhihua, Peoples R China

期刊名称：PLOS ONE （ 影响因子：3.752； 五年影响因子：4.069 ）

ISSN： 1932-6203

年卷期： 2022 年 17 卷 9 期

页码：

收录情况： SCI

摘要： In order to find out the optimized technological parameters of rice straw bowl tray, the forming test was carried out with the slurry made of rice straw as the main raw material and the pneumatic molding machine as the equipment. The orthogonal rotational combination test of ternary quadratic regression and response surface analysis method were used to study the effect of 3 molding factors (vacuum degree, pressure preservation time and adsorption time) on 3 molding technical indices (bowl hole molding rate, relaxation density and rupture-resisting strength). Design-Expert data analysis software was used to establish regression models between rice straw bowl tray molding factors and molding properties so as to obtain optimal technological parameters, which were as follows: vacuum degree: -0.09 MPa; holding time: 14 s; adsorption time: 5 s. At the moment, theoretical bowl hole molding rate was 98.62%, relaxation density was 5.8 g/cm3 and rupture-resisting strength was 27.48 N, the experimental results show that the theoretical analysis is correct, and the model fitting is better. This study can provide a theoretical basis for optimization of pneumatic molding technological of rice straw bowl tray and lay a foundation for realizing industrialized production of biomass seeding tray.

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