Synthesis And Application Research Of Self-crosslinking Acrylate Emulsion On The Wooden Furniture

With the increasing demand of wood in recent years, researchers’ passion on wood coating study has been more and more higher. People’s demands to wood coatings are mainly concentrated in weather ability, water resistance, flexibility, hardness and so on. In this paper, we analyzed the advantages and disadvantages of current waterborne wood coatings. Based on our analyze, we developed water-based wood coatings with good performance.Acrylic emulsion has excellent weather resistance, aging resistance and good adhesion etc. So we choose it as coating film-forming substances. According to the main demand of wood coatings in market, we choose MMA、St as hard monomers which provide hardness and mechanical strength for polymer, and BA、VV-10 as soft monomers which provide flexibility for polymer. At the same time, we designed particle structure to reduce the film-forming temperature, and used cross-linking monomers to improve film performance. Synthesis experiments showed that: when we complex polymeric emulsifier SR-10 with DNS-458, and keep the amount of initiator as 0.51%, the emulsion has better performance and high conversion rate. When the ratio of soft monomers/hard monomers is 2:8, the performance of latex and film are good enough. When we control the core-shell ratio of 4:6, the latex film has both good water resistance and film-forming property. Using MBI as cross-linking monomer could improve water resistance; using DAAM-ADH(DAAM:ADH=2:1)、GMA-HDA(GMA:HDA=2:1) as cross-linking systems, the film has good hardness and water resistance.From DSC diagram, we know that the polymer has two Tg, which means it has two different phases at least.TEM showed that the particle has core-shell structure. We used our acrylic emulsion as the main film substance with some additives to produce water-based wood coating, which could play a good protecting effect.