迷彩服织物与人体肘部皮肤摩擦特性研究

Friction Properties between Different Camouflage Clothing Textiles and Human Elbow Skin

在往复摩擦模式下模拟迷彩服穿着环境,研究了5种不同迷彩服织物的表面结构、亲疏水性、接触力值以及干湿状态对皮肤摩擦特性的影响.结果表明:在法向载荷为1 N时,湿态下的环境增强了织物与皮肤间的黏着力,织物与皮肤在湿态下的摩擦系数均高于干态;当法向载荷增加到5 N时,界面间的干湿状态对织物与皮肤的摩擦系数无明显影响.在干态时,不同迷彩服织物与皮肤的摩擦性能与织物的材质和针织结构有关,纯棉材质和斜纹结构的织物与皮肤的摩擦系数较小;在湿态时,不同迷彩服织物与皮肤的摩擦性能与织物的亲疏水性有关,疏水性强的织物由于增强了皮肤的水合作用以及界面间的粘附力,因此增加了织物与皮肤的摩擦系数.质地较硬的平纹结构织物易造成摩擦后的皮肤表面粗糙,造成皮肤不同程度的角质层分离及表皮撕裂,增加了皮肤表面损伤的风险.

The influences of surface structure and hydrophobicity of 5 kinds of camouflage clothing textiles, normal pressure and dry or wet conditions on the friction properties of skin were studied at a reciprocating friction mode to simulate the wearing conditions of camouflage clothing. Results show that at a normal load of 1 N, the wet condition increased the adhesion between the textiles and skin, and the friction coefficient in the wet condition was higher than that in the dry condition. At a normal load of 5 N, the wet or dry condition at the interface had no significant influence on the friction coefficient. In the dry condition, the friction properties between different camouflage clothing textiles and skin were related to the materials and knitting structure. The friction coefficient of textiles with cotton material and twill knitting structure was lower when contacting with skin. In the wet condition, the friction properties between different camouflage clothing textiles and skin were related to the hydrophobicity-hydrophilicity of textiles. Since the textiles with strong hydrophobicity could increase the hydration of skin and the adhesion between the interfaces, the friction coefficient was higher. The tough tabby knitting structure could cause rough skin surface and different levels of cuticle separation and epidermis tear, which increased the risk of skin injure.