Study on finishing and properties of the temperature-sensitive discoloration coating on knitted fabrics
With the development of society and the progress of science and technology,people's awareness of environmental protection and health,safety and comfortable life has gradually increased,and the demand for textiles has already broken through the limitations of the original shading,warmth,beautification and other aspects,and more inclined to the functionalization and intelligence of textiles.Advanced regions and some developed countries have also turned their attention to smart textiles with lower resource consumption,high economic efficiency and more in line with scientific and technological development.Smart textiles refer to textiles with the ability to perceive and respond to external stimuli,providing more functionality for traditional textiles,including intelligent monitoring products,intelligent heating and temperature control products,intelligent color-changing products,etc.Among them,color-changing textiles are favored by consumers through modern technology,which makes the color of textiles change dynamically with the change of environmental conditions.At present,foreign scholars have developed intelligent color-changing knitted clothing used in the field of military defense;domestic scholars have also applied it to medical detection,strong radiation environmental safety protection and other fields.The body temperature is the key information to reflect human life activities.To visualize the change of body temperature,an intelligent temperature monitoring color changing-fabric was designed and developed.Generally,an ordinary knitted fabric is selected as the base fabric and coated.In this paper,three kinds of knitted fabrics with different structures of mica-modified cool polyester filaments were selected as the base fabric and the coating was finished with temperature sensitivity and color change.Two kinds of reversible temperature-sensitive color-changing powder with different color-changing temperatures and effects were used to make color-changing coatings with water-based polyurethane and thickener,etc.The color-changing coating was coated on the fabric surface to obtain color-changing fabrics with different temperature ranges.The influence of the concentration of waterborne polyurethane,drying temperature and drying time on the color fastness,permeability and other properties of the color-changing fabric was analyzed,and the influence of different structures on the color-changing properties such as the color-changing effect and response speed was investigated.The results show that the higher the surface density,the slower the response speed and the lower the air permeability of the fabric.When the concentration of waterborne polyurethane reaches 60%,the drying temperature is 90℃,and the drying time is 7 min,the color fastness of the fabric is the best.Cool weft plain knitted fabrics have the best combined effect of discoloration performance and wear performance,and they are suitable to be used as the base of discoloration fabrics.Subsequent discoloration treatment can be further carried out,which can meet the personalized needs of consumers for clothing,and provide certain reference for the application of cool discoloration fabrics.A kind of thermochromic knitted fabric,which can be applied to intelligent temperature monitoring,is developed by processing and finishing the cool knitted fabric made of cool polyester filaments,which increases the function of the fabric and can monitor human temperature in real time in high temperature season.This provides reference for the innovation of traditional textile products,and a certain basis for the development and research of thermochromic products in the future,and has certain application prospects in the field of wearable display.
thermochromicmultistage discolorationHSB color modelgas permeabilityresponse speedcolour fastness
万方数据
维普
