假肢接受腔硅胶材料的力学性能研究

采用HY0580的压缩试验机,在反复压缩模式下模拟假肢接收腔/硅胶材料界面,研究了4种不同表面结构的硅胶内衬套材料的力学压缩性能。结果表明:4种不同表面结构的硅胶内衬套材料在载荷分别为0.5 N、3 N、7 N、10 N的试验工况下进行压缩试验时,都是在相同载荷(4.5 N)时出现平台期;在同等载荷的情况下,因1和4号硅胶材料正反两面均为光面,表面微凸体不高,粗糙度较小,2和3号材料与皮肤接触的反面上微凸体较高,粗糙度较大,故1号和4号材料的变形比2号和3号小,说明材料表面的各种纹路对缓解皮肤的压力有一定作用,硅胶材料反面上的粗大微凸体,增加了与皮肤的粘结性,有利于降低皮肤摩擦损伤的风险,提高残肢患者穿戴舒适性。

Mechanical properties of the prosthetic silicone material

In repeated compression mode, used HY0580 Compression testing Machine, to analog prosthetic receiving cavity/silicone material interface. Studied Mechanical compression performance of four kinds different surface structures of the inner silicone lining material. The results show that： When compression testing, the pressure of the load was 0.5N, 3N, 7N, 10 N, four kinds different surface structures of the inner silicone lining material all appear platform in the same load（4.5N）, because 1 and 4 silicone material both sides are smooth, Surface asperities is not high, the roughness is smaller, the side of the 2and 3 material in cintact with the skin, Higher asperity, roughness larger, Therefore, the deformation on the 1 and the 4 smaller than 2 and 3, so the lines on the surface of the material can ease the skin pressure, the thick asperity on the back of the silicine material, Increases the adhesion of the skin, Help to reduce the risk of skin friction damage, make the patient more comfortable.