摘要
为解决传统矫形鞋垫材料的力学性能单一、个性化适配不足等问题,本文通过活性稀释单体丙烯酸羟乙酯对聚氨酯材料进行改性,制备了一种光固化聚氨酯材料,并对该材料的黏度、硬度、压缩模量等进行了测试。同时,结合光固化3D打印技术制备扁平足定制矫形鞋垫。结果表明,当丙烯酸羟乙酯添加量为50%时,聚氨酯材料体系的黏度为281Pa·s,硬度为64HA,压缩模量为476MPa,可以适配3D打印工艺需求。且这种聚氨酯材料浸提液培养7d的细胞存活率高达887%,具有良好的生物相容性。并且,基于280μW紫外光照强度与8s分层固化参数的梯度填充策略,成功制备了一种具有足弓支撑和前掌缓冲功能的定制矫形鞋垫。综上,这种光固化聚氨酯材料综合性能良好,在定制矫形鞋垫应用中的适应性良好,可为个性化矫形材料的发展提供参考。
In order to solve the problems of single mechanical properties and insufficient personalized adaptation of traditional orthopedic insoles,the polyurethane material was modified by active dilution monomer hydroxyethyl acrylate to prepare a lightcured polyurethane material,and the viscosity,hardness and compression modulus of the material were tested.At the same time,the flat foot customized orthopedic insole was prepared by combining light-cured 3D printing technology.The results show that when the addition amount of hydroxyethyl acrylate is 50%,the viscosity of the polyurethane material system is 2.81 Pa·s,the hardness is 64 HA,and the compression modulus is 4.76 MPa,which could meet the requirements of 3D printing process.Moreover,the cell survival rate of the polyurthane material extract cultured for 7 days is as high as 88.7%,which has good biocompatibility.Moreover,based on the gradient filling strategy of 280μW ultraviolet light intensity and 8 s layered curing parameters,a customized orthopedic insole with arch support and forefoot cushioning function was successfully prepared.In summary,this light-cured polyurethane material has good comprehensive performance and good adaptability in the application of custom-ized orthopedic insole,which can provide reference for the development of personalized orthopedic materials.
作者
许向宇
王志强
XU Xiangyu;WANG Zhiqiang(Xi'an Siyuan University,Xi'an 710000,China;Xi'an Eurasia University,Xi'an 710065,China)
出处
《中国皮革》
2025年第10期78-83,共6页
China Leather
基金
2023年陕西省教育厅专项科研计划项目(23JK0169)。
关键词
矫形鞋垫
聚氨酯
硬度
压缩模量
生物相容性
orthopedic insoles
polyurethane
hardness
compression modulus
biocompatibility
