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以医用硅胶导管为基材,利用乙酸乙酯溶胀方法处理导管表面,以改善其表面亲水性。针对乙酸乙酯溶胀时间对接触角、亲水性及导管表面形貌的影响进行了研究,优化了处理工艺。实验结果表明:乙酸乙酯溶胀有利于改善硅胶导管表面亲水性,当乙酸乙酯的溶胀时间为30min时,涂层的接触角为39.3°,吸水率为0.68%,且涂层不易脱落,润滑持久性较好。
Medical silicone tube as the substrate, the use of ethyl acetate swelling catheter surface treatment to improve the surface hydrophilicity. The influence of the swelling time of ethyl acetate on the contact angle, hydrophilicity and the surface morphology of the catheter was studied, and the treatment process was optimized. The experimental results show that the swelling of ethyl acetate helps to improve the hydrophilicity of silicone tube surface. When the swelling time of ethyl acetate is 30min, the contact angle of the coating is 39.3 ° and the water absorption rate is 0.68% Lubrication lasting better.