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研究石膏晶须对纸张强度性能的影响,并得出石膏晶须用作纸张增强材料时的最佳工艺条件。结果表明,适当加入石膏晶须,纸页物理强度可明显提高。当石膏晶须加入量低于10%时,纸页各项强度均有一定程度下降;当加入量高于10%时,纸页各项强度随加入量的增加而升高,石膏晶须在针叶木浆及阔叶木浆中的加入量分别为35%和25%时,纸页各项强度达到最大值,继续加入石膏晶须纸页强度则逐渐下降;石膏晶须用于纸张增强时,针叶木浆的最佳打浆度为55～60°SR,阔叶木浆的最佳打浆度为50～55°SR。通过使用扫描电子显微镜对加入石膏晶须前后的纸页结构进行对比分析,初步探讨了石膏晶须的增强机理。
The effect of gypsum whisker on the strength properties of paper was studied, and the optimum conditions for the application of gypsum whiskers as paper reinforcements were obtained. The results show that the appropriate addition of gypsum whisker, paper physical strength can be significantly improved. When the amount of gypsum whisker is less than 10%, the strength of the paper sheet is reduced to some extent. When the amount of gypsum whisker is more than 10%, the strength of the paper sheet increases with the increase of the amount of gypsum whisker When the addition amount of the softwood pulp and hardwood pulp is 35% and 25% respectively, the strength of the paper sheet reaches the maximum value, while the strength of the paper sheet of the gypsum whisker continues to decrease; when the plaster whisker is used for paper strengthening, The best beating degree of softwood pulp is 55 ~ 60 ° SR, and the best beating degree of hardwood pulp is 50 ~ 55 ° SR. By using scanning electron microscopy to compare the structure of paper sheets before and after the addition of gypsum whiskers, the mechanism of reinforcement of gypsum whiskers was preliminarily discussed.