桐油-海藻酸钙自修复涂层的制备及性能研究

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中图分类号：TG174.426 文献标志码：A

文章编号：2096-2983（2025）03-0019-07

Abstract： Stainless steel is widely used in implant materials and medical devices， but it is susceptible to corosion in the human body environment， which can lead to device failure. To address this problem， a self-healing coating was designed. Core-shell microcapsules of tung oil-alcium alginate with medical tung oil as the core and calcium alginate as the shell material were prepared by in situ emulsion polymerization， and then the microcapsules were dispersed in modified silicone gel to form a wearresistant and corrosion-resistant coating. The microcapsules were characterized by scanning electron microscope， Fourier transform infrared spectrometer and thermogravimetric analyzer. The results show that when the mass fraction of microcapsule in the coating is 15% ， the wear resistance is optimal， the friction coefficient is as low as 0.32， and the wear depth is only 0.35mm . After being immersed in the simulated body fluid for 20d ， the low-frequency impedance was 7.0×105Ω⋅cm2 ， which demonstrated that tung oil as the core has a self-healing effect on microcracks.

Keywords： calcium alginate; tung oil; friction and wear resistance performance; corrosion resistance

不锈钢因其良好的力学性能、耐腐蚀性和生物相容性[1-2]，被广泛应用于植人材料和医疗器械领域[3。（剩余10627字）