论文部分内容阅读
以木薯淀粉为基体、过氧化氢为氧化剂、丙烯酸丁酯(BA)为软单体、丙烯酰胺(AM)为硬单体、石墨烯和纳米TiO_2(二氧化钛)为填料,制备了木薯淀粉基木材胶粘剂。研究结果表明:木薯淀粉氧化后,可与BA和AM进行接枝共聚反应,所得木材胶粘剂的综合性能良好;当w(纳米TiO_2)=3%、w(石墨烯)=4%(均相对于淀粉质量而言)时,木材胶粘剂的粘接强度[干态剪切强度分别为5.35、5.45 MPa,湿态剪切强度分别为2.88、2.95 MPa]明显提高;纳米TiO_2和石墨烯在木材胶粘剂中分散良好,故木材胶粘剂在结构没有改变的前提下明显提高了热稳定性。
Using tapioca as substrate, hydrogen peroxide as oxidant, butyl acrylate (BA) as soft monomer, acrylamide (AM) as hard monomer, graphene and nano-TiO 2 as fillers, adhesive. The results showed that: the tapioca starch can be grafted with BA and AM after oxidation, and the comprehensive properties of the obtained wood adhesive are good. When w (nano TiO 2) = 3%, w (graphene) = 4% Starch quality), the adhesive strength of wood adhesive [dry shear strength of 5.35,5.45 MPa, wet shear strength of 2.88,2.95 MPa] were significantly improved; nano-TiO_2 and graphene in the wood adhesive Decentralized, so the wood adhesives in the structure has not changed under the premise of significantly improved thermal stability.