Oya-Hasegawa Miyako, Oya Masaru
Department of Digestive Surgery, Chiba Rosai Hospital.
Graduate School of Environment and Information Sciences, Yokohama National University.
J Oleo Sci. 2023;72(2):161-170. doi: 10.5650/jos.ess22314.
A small-scale washing test model was proposed to reproduce the mechanical forces occurring inside a household washing machine in Japan. Washing tests were conducted using household washing machines, a tergotometer, and four types of small-scale washing test models using JIS-designated artificially soiled fabric. As a result of conducting washing tests in 10 households during winter and summer, we determined that the mechanical force of the washing machine was equivalent to 90-100 rpm agitation by a tergotometer. Similar detergency was obtained by rotating a 50 mL centrifuge tube with a tube rotator. Then, a centrifuge tube containing 35 mL of detergent solution, ten 1/4-inch stainless steel balls, and three 20 × 20 mm soiled fabrics was rotated at 50 rpm. Probability density functional theory analysis did not identify any kinetic problems, which means that the properties of the applied mechanical forces are similar to those occurring in the tergotometer and tube rotator test.
提出了一种小规模洗涤测试模型，以再现日本家用洗衣机内部产生的机械力。使用家用洗衣机、皮肤摩擦计以及四种使用JIS指定人工污染织物的小规模洗涤测试模型进行了洗涤测试。通过在冬季和夏季对10户家庭进行洗涤测试，我们确定洗衣机的机械力相当于皮肤摩擦计以90 - 100 rpm的转速搅拌。通过用试管旋转器旋转一个50 mL的离心管可获得类似的去污力。然后，将一个装有35 mL洗涤剂溶液、十个1/4英寸不锈钢球和三块20×20 mm污染织物的离心管以50 rpm的转速旋转。概率密度泛函理论分析未发现任何动力学问题，这意味着所施加机械力的特性与皮肤摩擦计和试管旋转器测试中产生的机械力特性相似。
