关中地区土壤含水率对丝织品老化的影响

Effects of soil moisture content in Guanzhong area on ageing of silk fabrics

为了探究关中地区土壤含水率对丝织品老化影响的规律,采用墓葬土和井水包埋市售桑蚕丝,利用色差仪、显微分析系统、红外光谱仪和万能材料试验机测试了样品老化前后颜色、微观形态、分子结构和抗拉强度的改变,以评价丝织品在包埋环境中的老化状况。结果表明:在20%含水率环境中,丝织品老化最明显;在10%含水率(干燥缺氧)环境中丝织品老化程度最小。在包埋过程中,有粉红色小双孢菌生成,其分泌物影响丝织品外观。因此,土壤含水率对丝织品老化的影响非常明显。

In order to study how the Guanzhong soil moisture content affects the silk ageing process, mulberry silk samples were embedded in tomb soil and well water. Color difference meter, microscopy, FT-IR and universal testing machine were applied to test the changes in color, micro-morphology, molecular structure and tensile strength of the samples before and after ageing to evaluate the ageing state. Results suggest that silk samples degraded significantly at 20% soil moisture content while aged least at 10% soil moisture content. During the embedding, some pink microbispora rosea formed, whose exudates greatly influnenced the silk appearance. Therefore,the soil moisture content strongly affects the silk ageing.