| Coating finishing is a technology of surface finishing by coating one or more layers ofpolymer on the surface of fabric uniformly, which can endow fabric some properties. Theappearance and style of fabric are changed, and other functions of fabric is increased by coatingfinishing, etc, so it has been paid great attention. At present the function of coated products is tooonefold in our country, therefore, it can’t meet the consumers’ requirements to muitifunctional oftextile. The development of multifunctional coated products exists some problems including theconsistency of different functional additives, the compatibility of different functions and theinfluence of different process parameters on each other, etc, it exists so many difficulties ontechnology that multifunctional coating products develop slowly. The paper screens out thecoating agent with good waterproof and moisture permeability, the preferable ultravioletabsorber and flame retardant which have good consistency with coating agent are elected,ultraviolet absorber scattered uniformity in the coating agent and the compatibility of eachfunctional is solved, finally, the multifunctional coating finishing technology includingwaterproof breathable, ultraviolet protection and flame retardancy properties were obtained.In this paper, padding finishing for polyester fabric by adopting four waterrepllentses offluorine, the waterrepllents TG-410HN which has good water repellent and waterproof effectwas elected, and a set of preceding water repellent technology and formula had been obtained,which is matching with coating finishing of polyester, the preceding water repellent finishing asfollows: dosage of TG-410HN is20g/L, mangle expression is45～55%,baking temperature is170℃,baking time is50s.Six kinds of polyurethanes coating agent respectively are used for fabric coating finishingafter preceding water repellent finishing, the coating agent TF-671H which has better waterproofpermeability and moisture permeability was screened out, the infrared absorption spectrum ofTF-671H and SEM of coated fabric which are made by TF-671H were observed, waterproofbreathable mechanism is both microporous moisture and hydrophilic transfer by coated fabric ofapplying to TF-671H was testified.The influence of three kinds of coating finishing methods onwaterproof and moisture permeability by using TF-671H was compared. Finally, a set of technology and formula of waterproof breathable coating finishing was developed.The ultraviolet absorber UV-234of benzotriazole was elected, it has good ultravioletprotection and consistency with coating agent TF-671H; several methods of improving scattereduniformity of ultraviolet absorber was researched, the results showed that dispersant FL-DH750combined with stirring10min, then oscillating10min using ultrasonic, it can homodisperseUV-234in the coating agent TF-671H; reffering to waterproof breathable coating finishingtechnology, the influence of dosage of UV-234on ultraviolet protection and waterproofbreathable permeability were studied, the optimal addition of UV-234is0.5%quality of coatingagent TF-671H is determined, and UPF value of the coated fabric is33.07, moisture quality is4337g/m2·24h, water pressure resistance is367mmH2O.Several kinds of organic flame retardant of phosphor series and P-N system were filtered, itwas found that the better consistency of flame retardant FR-390with coating agent TF-671H, ithad been applied to preceding water repellent, coating finishing and water repellentaftertreatment respectively, the influence of the dosage of flame retardant FR-390on flameretardancy of coated fabric is researched, and the optimal dosages of FR-390on the waterproofbreathable permeability of coated fabric were investigated, the results showed that FR-390isapplied in coating finishing better than water repellent finishing. At the same time, inorganichydrotalcite and flame coating agent TF-680B respectively were added to coating agentTF-671H respectively, the influence of two kinds of addition of flame retardant promoters on theflame retardancy of coated fabric were studied, and the optimal dosages of differentflame-retardant promoters on the waterproof breathable permeability of coated fabric wereinvestigated,The results show that the coated fabric which is added to inorganic hydrotalcite hasgood flame and waterproof breathable permeability, flame retardancy: after-flame time andafter-glow time are0s, char length is10.5cm, which reaches the requirement of nationalstandard level B1, moisture quantity is7247g/m2·24h, water pressure resistance is430mmH2O.The ultraviolet absorber UV-234and the flame retardant inorganic hydrotalcite were added tocoating agent TF-671H meanwhile, the consistency of UV-234, hydrotalcite andTF-671H werestudied,and the compatibility of ultravioletprotection and flame retardancywere investigated,the resultsshow that UV-234, inorganic hydrotalcite and TF-671H can excellent coexistence;inorganic hydrotalcite to the ultraviolet protection of coated fabric is not big effect, but UV-234 leads to flame retardancy of coated fabric is descended;through the addition of inorganichydrotalcite was adjusted,coated fabric can reach good effects on flame retardancy andultraviolet protection; based on the above study, the technology and formula of multifunctionalcoating finishing is confirmed; and the influence of multifunctionnal coating finishing onphysical properties of fabric and colour fastness of dyed fabric were discussed, the results showthat the whiteness, hardness, smoothnessand softness of fabric are not effected, breakingstrength increases, no formaldehyde has been detected by muitifunctional coating finishing; andfastness to dry heat, color fastness to washing, light fastness and rubbing fastness of dyed fabricis essentially not effected. |
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