目的 研究蔬菜复合纸的大豆蛋白喷涂液雾化角的计算方法,及喷涂过程中工艺参数对大豆蛋白喷涂液雾化角度的影响。 方法 运用 MATLAB 软件,通过图像处理方法计算蔬菜复合纸的大豆蛋白喷涂液的雾化角度,并利用响应面分析法研究喷涂参数对大豆蛋白喷涂液雾化角的影响。 结果 单个因素中喷涂流量和气压对大豆蛋白喷涂液的雾化角有显著影响,喷涂流量、气压及液压三者的交互作用对喷雾角度有极显著影响(0 . 0008 <0 . 05 ) 。 通过分析软件建立了雾化角与喷涂工艺参数之间的关系模型,并得到了最佳喷涂条件。 结论 当喷涂流量为 48 . 04 mL / min, 气压为 199 Pa, 液压为151 Pa 时,大豆蛋白喷涂液的雾化角最大值为 138 . 2637^o 。

Objective To investigate the calculation method of spray angle for soy protein spray coating dispersions ( SPCD) of the vegetable composite paper in the spraying process and the influence of spraying process parameters on atomization angle of SPSCD. Methods The spray angle of SPSCD for vegetable composite paper were calculated using MATLAB software based on the image processing method. The effect of process parameters on the spray angle produced during spraying process was also studied based on response surface methodology analysis. Results Among the single factors, the spray flow rate and pressure had a significant effect on SPSCD. The interaction of spray flow rate, air pressure and hydraulic pressure had a very significant effect on the spray angle ( 0. 0008 < 0. 05 ) . The relational model between spray angle and process parameters was built by analysis software and the optimal spraying conditions were identified. Conclusion The spray angle of SPSCD could reach 138. 2637^o , when the flow rate was 48. 04 cc / min,the air pressure was 199 Pa, and the hydraulic pressure was 151 Pa.