Preparation And Modification Of UV-cured Acrylated Epoxidized Soybean Oil

Soybean oil is a kind of renewable resource and has the largest origin and amount. It has typical triglyceride construction, the double bond and ester linkage in it can be react under suitable react condition and convert to different soybean oil derivatives. Thus, besides used as edible oil, it was also studied for industry application very early. UV-cured coating has the merits of no organic volatile solvent emission, non-toxic, low energy consumption, fast curing speed, less covers of area for the machine and can be produced automatic continuously, so it developing rapidly in the field of coatings. Epoxidized soybean oil is a kind of soybean oil derivates. With epoxidized soybean oil as raw material, the UV-cured acrylated epoxidized soybean oil and modified acrylates coating oligomer could be prepared, which is absolutely a type of "green+green" material that combined the advantages of the two environmental materials. This article is just utilize the very notion and prepared several soy-based acrylates UV-cured coating prepolymer.This topic first prepared acrylated epoxidized soybean oil under the action of catalyst and inhibitor through bulk polymerization. By means of adjust the different functional groups ratio of epoxidized soybean oil and acrylic acid, different acrylated epoxidized soybean oil oligomers were synthesized. Then discussed the influence of acrylic acid content on the reaction process and cured films performance of this reaction. The heated properties were tested by Thermal gravimetric Analysis (TGA). It turns out that the higher content of the acrylic acid could reduce the UV-cured film’s thermal decomposition temperature. Through tensile test, the series films’ tensile properties were measured and further indicate that the acrylic acid has a great influence on the UV-cured films’tensile properties. Some other mechanical properties were also measured by pencil hardness, adhesive force and impact testing. The results showed a clear mechanical performance change of the UV-cured films’when the acrylic acid content increased.In order to improve the mechanical properties and adhesion force of pure acrylated epoxidized soybean oil. Epoxy resin was added for its high modulus, high strength, good adhesive ability and excellent chemical resistance. The acrylated epoxy/acrylated epoxidized soybean oil (EA/AESO) oligomer was synthesized based on the mixture of epoxidized soybean oil and epoxy. They were both grafted by acrylic acid first. By means of copolymerization, the oligomers were UV-cured with Doracur1173. Thus UV-cured films modified by epoxy resin were prepared. The properties of UV-cured films were measured by tensile property test, pencil hardness test, adhesive force and impact resistance test and the others. The results showed an obvious improvement of the mechanical property, adhesive ability and other properties. The UV-cured film gained the best performance when the epoxy content is about6%of epoxidized soybean oil’s.The research of organic/inorganic composite materials of acrylated epoxidized soybean oil is rare. This paper use the attapulgite with porous chain-shaped layered architecture as inorganic nonocompsite, it’s surface was modified by silane coupling agent KH-570, The structure of modified attapulgite were characterized by Fourier Transform Infrared Spectroscopy (FT-IR), and the Differential Thermal Analysis was used to calculate the surface grafting ratio of attapulgite, the result showed the surface grafting ratio is about9.05%. Then the modified attapulgite was blended in situ to prepare the attapulgite/acrylated epoxidized soybean oil (ATP/AESO) composite. The surface character of the composites was tested by contact angle test. Other mechanical properties and thermal behavior were also tested by the related methods. Through the comparative analysis. The UV-cured film gained the best performance when the modified attapulgite content is about1.5%of epoxidized soybean oil’s. Fumed silica is a kind of new inorganic nonocomposite, its influence to acrylated soybean oil is also discussed simply in this thesis.