The invention discloses a single-component polyvinylacetate binding agent and a preparation method thereof. The single-component polyvinylacetate binding agent comprises the following raw materials in percentage by weight: 48 to 52 percent of deionized water, 3 to 5 percent of
polyvinyl alcohol, 25 to 40 percent of polyvinylacetate, 5 to 10 percent of
butyl acrylate, 2 to 3 percent of hydroxyethyl
acrylate, 1 to 3 percent of methyl
acrylic acid, 10 to 15 percent of organic
silicon, 2 to 3 percent of composite emulsifier, 0.1 to 0.9 percent of initiator, 0.1 to 0.3 percent of pH
regulator and 5 to 10 percent of
plasticizer. The binding agent of the invention is modified waterproof and high temperature-resistant white latex prepared by acrylic ester and organic
silicon modification with
polyvinyl alcohol as protective
colloid and polyvinylacetate as a base stock. All technical indexes of the binding agent are beyond standards of
chemical industry, the waterproof performance and high
temperature resistance of the binding agent are high, the production process of the binding agent is simple, the cost of the binding agent is low, and thus, the binding agent is a safe and environmentally-friendly product.