关键词: 家用干衣机, 无氟防水整理, 烘干, 防水性能, 整理工艺

Abstract: To address the high cost and energy consumption associated with restoring the diminished waterproof performance of traditional waterproof garments after home laundering, this study explores a novel approach for fabric water-repellent functionalization using household tumble dryers. Untreated pure nylon fabric was selected as the test specimen. By establishing a treatment system involving off-machine spraying followed by in-dryer treatment, we systematically investigated the effects of fluorine-free water-repellent agent concentration (SH-A), add-on level (o.w.f), drying duration, fabric movement pattern, and initial moisture content on the water-repellent performance of pure nylon fabric.The study found that within the home laundry context, untreated pure nylon fabric treated with a fluorine-free process (5% SH-A concentration, 1.29% o.w.f, 65°C, static drying for 20 minutes) exhibited significantly enhanced water repellency. The water spray rating improved from Grade 2.0 to Grade 4.5, and the static water contact angle reached 133.2°. Importantly, the moisture vapor transmission rate remained high at 2576±2 g/m²·d, air permeability decreased by only 1.67%, and fabric hand feel showed no significant alteration. These results demonstrate that this approach achieves excellent water-repellent functionalization suitable for household application.

Key words: Household tumble dryer, Fluorine-free water-repellent finishing, Drying, Waterproof performance, Finishing process