直接黑染料代替炭黑制备育果袋纸的研究

Making Fruit Bag Paper with Direct Black Dye Instead of Carbon Black

选用适宜的媒染剂,研究以染料的染色工艺条件来改善直接黑染料在育果袋纸中的应用效果。结果表明:硫酸铝和聚合氯化铝适宜用量均为2%,从助染效果和成本两方面来说聚合氯化铝的效果较好。在最佳的染色体系下根据染料成本和纸张黑度两方面综合考虑,确定直接黑染料用量2%。适宜染色工艺条件:在搅拌速率为500 r/min下染色温度为25℃,染色时间为30 min,在一定打浆度范围内,适当提高浆料打浆度有利于染色。染色纸张的耐晒性能良好,遮光性能达到标准要求,耐水性能良好。

In this research,suitable mordant and dyeing conditions for improving the dyeing effect of black dyes on fruit bag paper were studied.The results showed that the appropriate dosage of aluminum sulfate and polyaluminum chloride were both 2%,and when the cost and retention effect were taken into consideration,polyaluminium chloride was better than aluminum sulfate.Therefore,the dye dosage should be 2%.At a stirring rate of 500 r/min,the dyeing temperature and time for proper dyeing were 25 ℃ and 30 min.Increasing the beating degree of the slurry within a certain range can help dyeing.The dyed paper has good light fastness and water resistance,and the shading performance meets the requirements.