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通过使用华日光纤工艺平台技术,对人造聚氨酯微孔化处理,改变微观结构,为提高其制成品透水汽性和生物医学材料的血液相容性提供了新的思路和方法。并使用SEM微观检测手段,分析对比不同激光工艺参数对微孔的形貌、分布的影响。结果表明:随着激光平均功率、单脉冲能量和脉冲峰值功率的增加,微孔深度增加,锥度减小,热影响区减小。得出最佳加工参数为激光平均功率25W、单脉冲能量0.8MJ、脉冲峰值功率17.2W。
Through the use of HuaRi fiber technology platform technology, micro-pore treatment of artificial polyurethane, change the microstructure, in order to improve the water vapor permeability of its finished products and biomedical materials, blood compatibility provides a new way of thinking and methods. And the use of SEM micro-detection means, analysis and comparison of different laser process parameters on the morphology and distribution of micropores. The results show that with the increase of laser average power, single pulse energy and pulse peak power, the micropore depth increases, the taper decreases and the heat affected zone decreases. The best processing parameters are laser average power 25W, single pulse energy 0.8MJ, pulse peak power 17.2W.