定型聚合物对不同人种头发力学性能的影响

Differences in performance of styling polymers on ethnic hair types

通过使用亚洲、欧洲(高加索)、非洲以及拉美(黑白混血)等不同人种头发做成Ω环状发束,再经定型聚合物定型,用质构分析仪对其进行力学性能测试,并应用环状材料弯曲受力的数学模型,分析了头发的形态结构对定型后的发束力学性能的影响。结果表明,不使用定型产品时,发束的力学性能与发丝粗细有关,发丝越粗,发束的力学性能越好。使用定型产品时,发束的力学性能与发丝粗细关系较小,而与排列层数有关。

A comparison is made of the performance of styling polymers on hair of four major racial sources, namely Asian, Caucasian, Mulatto and African. Differences among hair types are shown using high humidity curl retention （HHCR） and assessment of mechanical properties as measured with a Texture Analyzer （TA） assuming that the fibers were in omega loop configuration. Results from this study demonstrated that the stiffness of styling polymers treated fiber assemblies of different hair types is controlled by their differences in diameter.