防切割热致变色织物的制备与表征OA

Cut-resistant textiles play an important role in industrial safety and personal protection.However,traditional products mainly provide single-function mechanical protection,making it difficult to meet the demands for environmental perception and active response in complex situations.Thermochromic materials offer visual responsiveness to temperature stimuli and can endow textiles with environmental interaction capabilities.Combining these materials with cut-resistant structures is expected to achieve the functional integration of passive protection and active warning.Nevertheless,existing studies still face challenges such as insufficient synergistic design between the thermochromic system and protective structures,poor interfacial bonding stability,and inadequate functional durability.Therefore,developing composite fabrics with both high cut-resistance and stable thermochromic response is of great significance. To address these issues,this study focused on cut-resistant thermochromic fabrics and proposed a functional integration method based on a multi-layer wrapped structure combined with interfacial regulation.The cut-resistant functional layer was constructed using a double-layer wrapped structure consisting of ultra-high molecular weight polyethylene core yarn,stainless steel fiber,and aramid fiber.A low-temperature plasma process was employed to controllably activate the surface of the outer polyester fibers,increasing surface roughness and introducing polar oxygen-containing functional groups to enhance the bonding strength between the polyester fibers and thermochromic dyes.Thermochromic microcapsules were incorporated using a sodium carboxymethyl cellulose/waterborne polyurethane composite system.The effects of post-weaving dyeing and post-fabric dyeing processes on fabric performance were systematically compared.In addition,a conductive stainless steel fiber network was integrated to achieve active and rapid thermochromic response under voltage driving.The microstructure,chemical composition,protective performance,color stability,and electrothermal response of the fabric were systematically characterized using scanning electron microscopy,X-ray photoelectron spectroscopy,cut-resistant testing,color fastness testing,and electrothermal performance testing.This study combined plasma interfacial regulation with a double-layer wrapped cut-resistant structure and introduced conductive stainless steel fibers to construct an electrothermal driving pathway,achieving the synergistic integration of cut-resistant performance,thermochromic response,and electrothermal functionality.Furthermore,the influence of different dyeing processes on the distribution of thermochromic microcapsules and fabric performance was elucidated.The results showed that under plasma treatment conditions of 200 W and 60 s,the oxygen-to-carbon ratio on the polyester fiber surface increased from 0.21 to 0.55,forming a multi-scale rough morphology and polar interface favorable for dye attachment.Compared with the dyeing-after-weaving process,the dyeing-after-braiding process yielded a cut-resistance force of 26.9 N,which was higher than that of both the dyeing-after-weaving and undyed samples.It also achieved a washing color fastness of grade 4-5 and exhibited better dry rubbing fastness.In addition,the fabric showed a distinct thermochromic response at the color-changing threshold,with a color difference of 48.3,demonstrating good visual discrimination.The apparent color depth remained stable after 50 thermal cycles,indicating stable color-changing performance.Under a voltage of 5 V,the fabric temperature increased to 60℃within approximately 6 s,and the peak temperature fluctuation remained below 5％over 20 electrothermal cycles,demonstrating stable and controllable electrothermal response.These findings indicate that the proposed method effectively achieves synergy between protective performance and responsive functionality. The cut-resistant thermochromic fabric developed in this study provides a new design strategy for functional protective textiles and shows great potential in industrial protection and smart wearable applications.It also offers valuable reference for the structural design and process optimization of multifunctional textiles.