Low-viscosity high-solid-content polyvinyl acetate emulsion adhesive and preparation method thereof

The invention discloses a low-viscosity high-solid-content polyvinyl acetate emulsion adhesive and a preparation method thereof. The preparation method comprises the following steps: by taking a protective colloid, a reaction monomer, a modifing monomer, an initiator, an emulsifier, a plasticizer, a pH regulator and deionized water as raw materials, polymerizing to obtain an initial emulsion, andadding the protective colloid into the initial emulsion as required to regulate the adhesion and solid content of the emulsion to meet the requirements, thereby obtaining the target product. Accordingto the method, industrial production can be achieved, the viscosity and the solid content of the product can be adjusted as required, safety and environmental protection are achieved, and the productquality is stable. 本发明公开了一种低粘度高固含聚醋酸乙烯酯乳液胶粘剂及其制备方法，是以保护胶体、反应单体、改性单体、引发剂、乳化剂、增塑剂、pH调节剂和去离子水为原料，经聚合获得初始乳液，再在初始乳液中按需加入保护胶体，以调整乳液的粘合和固含量至满足需求，从而获得目标产品。本发明的方法能够实现工业化生产，产品的粘度和固含量可按需调整，且安全环保、产品质量稳定。