Paper adhesive and preparation method thereof

The invention belongs to the field of decoration materials, and particularly relates to a paper adhesive and a preparation method thereof. The paper adhesive comprises the following raw materials in percentage by weight: 6-8.5% of polyvinyl alcohol, 1.5-3.5% of formaldehyde-urea formaldehyde resin, 2.5-5% of melamine modified resin, 1-2.5% of vinyl acetate, 0.5-2% of diatomaceous earth and the balance of water. The paper adhesive disclosed by the invention has the characteristics that the formaldehyde release amount is greatly reduced, the long-acting adhesive effect is good, the application range is wide, and the like. The formaldehyde-urea formaldehyde resin and melamine modified resin which are used in the raw materials and are prepared by a specific method have an obvious enhancing effect of reducing the formaldehyde release amount, and a certain synergistic effect is achieved. 本发明属于装饰材料领域，尤其涉及种纸张粘合剂及其制备方法，所述的纸张粘合剂，包含如下重量百分比原料：聚乙烯醇6~8.5%、甲醛脲醛树脂1.5~3.5%、三聚氰胺改性树脂2.5~5%、醋酸乙烯酯1~2.5%、硅藻土0.5~2%、余量为水。本发明所述的纸张粘合剂