Preparation and Performance of Soybean Oil-based UV Curable Underwater Adhesives
This work used soybean oil as raw material to prepare a novel soybean oil-based acrylamide monomer(SO-HEAA)through a simple alcoholysis reaction.Then,it was compounded with isobornyl acrylate(IBOA)to prepare various adhesives with different properties under UV irradiation.Firstly,its structure was characterized by infrared and nuclear magnetic methods.Subsequently,the mechanical properties,heat resistance,storage modulus,loss modulus,and contact angle values of the adhesive were characterized using a universal testing machine,thermogravimetric analyzer,rheometer,and contact angle tester.It was found that the properties of adhesive could be effectively regulated by changing the content of IBOA.When the mass ratio of SO-HEAA to IBOA was 1∶4,the adhesive IBOA4 showed better comprehensive properties,its breaking strength could reach 1.42 MPa,the elongation at break could reach 419.7%,and its surface could achieve hydrophobic effect.The adhesive not only had better bonding effect on different substrates,but also had better underwater bonding performance.In addition,all adhesives were frequency dependent,and the regulation between elastic and viscous properties of adhesives was achieved through IBOA regulation.In conclusion,the adhesive prepared in this work was expected to achieve effective bonding in underwater environment,and the use of soybean oil also expanded the application of biomass materials in adhesives.
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