Preparation and Characterization of Starch-based API Wood Adhesive
In this study modified starch was prepared by acid-thinned and oxidation with ammonium persulfate,then starch-based Aqueous Polymer Isocyanate (API) wood adhesive was prepared.The effect of the additive amount of modified starch,SBR,P-MDI and the concentration of PVA on bonding strength for starch-based API adhesive were discussed by orthogonal test.The results showed that when the addition of modified starch was 45g,SBR was 3%,concentration of PVA was 10%,and amount of P-MDI was 18%,starchbased API adhesive performance was the best.The compression shearing of glulam produced by starch-based API adhesive had reached bonding performance indicators of Ⅰ type Ⅰ adhesive stipulated by LY/T 1601-2002.
Starch-based API adhesiveOrthogonal testCompression shearing strength