Synthesis And Application Of The Fabric Functional Additives

With the development of the society and the improvement of people’s livingstandards, people become more and more fastidious on the fabric appearance andwearing comfort. Thus, it becomes particularly important to the facric finishing. Thefunction additives, which are used in finishing, should be non-toxic, no pollution tothe environment and should have better finishing results (such as wrinkle-free,washable, anti-static, anti-UV). Therefore, the design and synthesis of high-performance and environmentally friendly fabrics functional additives is always a hotresearch topic in the dyeing and finishing industry.The main contents of this paper include:(1) a series of waterborne polyurethanefunction additives were prepared with isophorone-diisocyanate(IPDI), polyethyleneglycol polyols, polypropylene glycol, dimethylol propionic acid(DMPA), and therelevant molecular structures were characterized.(2) The dimethyl diallyl ammoniumchloride (DMDAAC) was prepared with dimethyl amine and allyl chloride. A seriesof waterborne polyurethane function additives which modified by DMDAAC weresynthesised. And the relevant molecular structures were characterized.(3) The N,N-dimethyl allyl p-benzoyl benzyl ammonium bromide was prepared with toluene,benzoyl chloride, etc. A series of waterborne polyurethane function additives whichmodified by it were synthesised. And the relevant molecular structures werecharacterized.(4) The series of synthetic waterborne polyurethane function additiveswere applied to several dyeing fabrics, and we tested the related effect.The research showed:(1) the conditions of emulsion stability were determined asfollows: R=1.6-2.0, amount of DMPA was4%, neutralizing temperature was40℃,neutralization degree was100%. The optimal synthesis conditions were determinedaccording fabric finishing results: R=2.0, amount of blocking agent was6.5%, amountof epichlorohydrin was5.5%, PH=6. And the optimal finishing process weredetermined: amount of finishing agent was4%, the baking time was1.5min, thetemperature of finishing solution was50℃, the time was30min, liquor retention was100%, the baking temperature was140℃.(2) The optimal synthesis conditions of thewaterborne polyurethane which modified by DMDAAC were: n(monomer1):n(monomer2)=1:2, initiator AIBN amount was1%. The optimal finishing processwere amount of finishing agent was3%, the PH was6, the temperature of finishing solution was50℃, the time was30min, the baking temperature was130℃.(3) Theoptimal synthesis conditions of the waterborne polyurethane which modified byN,N-dimethyl allyl p-benzoyl benzyl ammonium bromide weren(monomer1):n(monomer2)=1:2, initiator AIBN amount was1%. And the optimalfinishing process were: amount of finishing agent was3.5%, the PH was6, thetemperature of finishing solution was50℃, the time was30min, the bakingtemperature was140℃. The ultraviolet protection factor (UPF) can be up to30. Itindicated that it had a better UV absorption function.Result indicated: the modified waterborne polyurethane function additives wereunreported. And they had good finishing results to the fabric which dyed by differentreactive dyes, and the waterborne polyurethane which modified by N, N-dimethylallyl p-benzoyl benzyl ammonium bromide had a better UV absorption function.