废纸纤维发泡制品的静态缓冲性能及曲线拟合

Static Cushioning Performance and Curve Fitting of Waste Paper Fiber Foaming Products

目的为了促进包装废纸的再生利用,节约自然资源和保护生态环境,文中在优化废纸纤维发泡制品配方的基础上,研究制品的静态缓冲性能,并进行曲线拟合。方法使用废弃瓦楞纸板,利用微波加热发泡工艺,通过正交试验探究发泡剂种类和配比,以及丙三醇和碳酸钙用量对废纸纤维发泡制品性能的影响,并据此确定废纸纤维发泡制品的优化配方。以最优配方的材料试样进行静态压缩试验,探究材料试样的静态缓冲性能,并使用Matlab进行曲线拟合。结果确定了废纸纤维发泡制品的优化配方,绝干废纸浆、碳酸氢钠、发泡剂H、淀粉、聚乙烯醇、甘油、碳酸钙、硼砂的质量比约为32∶3∶1∶0.9∶0.6∶4∶4.5∶0.2;最小缓冲系数在5左右时,缓冲性能较好;可采用正切加双曲正切函数方程拟合该材料试样的静态压缩曲线,方程的残差平方和为0.000 451,其具有较高的精度。结论经过配方优化后,废纸纤维发泡制品具有较好的静态缓冲性能,并且可用函数方程较好地拟合其静态压缩曲线。

The work aims to promote the recycling of packaging waste paper, save natural resources and protect the ecological environment, as well as study the static cushioning performance of the product based on the optimization of the formula of waste paper fiber foaming products, and perform curve fitting. With waste corrugated paperboard and microwave heating foaming technology, the effects of type and proportion of foaming agent and the amounts of glycerol and calcium carbonate on properties of foaming products of waste paper fiber were investigated by orthogonal test. Based on this, the optimum formula of waste paper fiber foaming products was determined. The static compression test of the material sample was carried out with the best formula, the static cushioning performance of the material sample was investigated, and the curve fitting was performed with Matlab. The optimized formulation of waste paper fiber foaming products was determined： the mass ratio of oven dry waste paper pulp, sodium bicarbonate, foaming agent H, starch, polyvinyl alcohol, glycerol, calcium carbonate and borax was about 32∶3∶1∶0.9∶0.6∶4∶4.5∶0.2. When the minimum cushioning coefficient was about 5, the cushioning performance was better. The static compression curve of the material sample was fitted with tangent and hyperbolic tangent function equation. The residual sum of squares of the equation was 0.000 451, which had high precision. After optimizing the formula, the foaming products of waste paper fiber have better static cushioning performance, and the static compression curve can be fitted well by the function equation.