自制纸张透明剂的应用性能研究

Preparation and Application of Pape Transparent Agent

采用复配法制备了纸张透明剂,并对透明剂的性质及其应用性能进行了系统研究。透明剂的性能可以在常温和较长时间内保持稳定,不会出现溶液分层或浑浊等现象。采用优选出的透明剂处理纸张后,纸张透明度可达到70%以上,相比原纸,透明度提高30个百分点以上,但同时纸张强度性能有所下降。透明剂可在常温下快速渗透,最佳浸渍时间为5 s。扫描电镜分析表明,透明剂可有效存留于纸张内部,填充纤维间的空隙,黏附在纤维表面。

In this paper, the GWT transparent agent was prepared with complex formulation and the properties and applications of the transparent agent were studied in detail. The GWT transparent agent was a pale yellow emulsion with solids content 30% wt, refractive index 1.51 and viscosity 18. 8mPa.s at 25℃. The GWT transparent agent could keep a stable property without layering and feculent in a long time under room temperature. The transparency of the paper treated with GWT transparent agent increased by 32. 95% compared to the base paper, namely from 38. 66% to 71.61%. At the same time, the mechanical strengthes of the paper were decreased. The transparent agent can be permeated into the paper rapidly under room temperature, the optimal permeating time was 5 seconds. The scanning electron microscopy a- nalysis showed that, the transparent agent had a good retention rate in base paper with its adhesive ability to the fiber surface, and also the transparent agent could fill in the interspace beteeen the fibers.