羊毛纤维密度的液体浮力法测试

采用液体浮力法对原毛、氯化防缩羊毛和拉伸细化羊毛3种纤维密度进行了测试研究．分析了不同测试介质、不同脱泡工艺和不同纤维结构对纤维密度测试值的影响。实验结果表明：脱泡工艺是测试精度的关键，采用高速离心-煮沸-抽真空进行脱泡，操作简便易行，测试数据稳定、准确；无水乙醇为介质的测试精度要好于蒸馏水；羊毛拉伸细化工艺较常规化学处理更易造成纤维结构的不匀，给密度测试带来一定误差。

The liquid buoyancy based testing of the wool fiber density

Using the liquid buoyancy method, this paper measures the density of raw wool fiber, chlorinated wool fiber and stretched wool fiber, and analyzes the influences of different testing medium, different debubbling technology and different fiber structure on the measured density values. The experimental results show that the debubbling technology is most important to obtain an accurate result, and the debubbling process of high speed centrifugation-boiling-vacuum pumping is easy to operate and the measured data is stable and accurate; the absolute ethyl alcohol is better than distilled water as far as improving the testing accuracy is concerned; and compared to conventional chemical treatment, the thinning technology through stretching to process wool is more easy to cause uneven fiber structure.