Preparation and Characterization of an Epoxy Soybean Oil-Based Acrylate-Polyurethane Resin
The development of new renewable bio-based resins is an important means to realize the substitution of petroleum-based related products and green and sustainable development.In this paper,epoxy soybean oil-based acrylic resin(AESO)was prepared by one-pot method using maleic anhydride(MA),methyl tetrahydrophthalic anhydride(MTHPA),hydroxyethyl acrylate(HEA)and epoxy soybean oil(ESO)as raw materials.A certain amount of isocyanate or HEA semi-sealed isocyanate was added to the resin to obtain an epoxy soybean oil-based acrylate-polyurethane resin with a bio-base content of more than 30%.The effects of different isocyanate types and amounts on photocuring activity,thermal stability and tensile properties of resin were investigated.Through the dynamic thermo-mechanical,mechanical properties and rheological viscosity tests,the results show that the introduction of HEA structure can increase the glass transition temperature to 65.3℃,the energy storage modulus to 1417.9 MPa.the tensile strength is up to 27.4 MPa and the fracture elongation is 67.2%.The viscosity is reduced to 43.4 Pa·s.At the same time,the gel-found rate of the above two resins is more than 86%,both of which have alkali soluble,excellent solvent resistance and high gloss.This study provided a new idea for the development of epoxy soybean oil-based acrylate-polyurethane resin,which is helpful to broaden its application in the field of bio-based light curing coating.
soybean oillight curingone pot methodbio-basedacrylic-polyurethane resin
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