Synthesis Of Fluoroalkyl-modified Amino Silicone Oil And Its Application On Fabric Deepening Finishing

In this dissertation, fluoroalkyl modified aminosilicone oil was synthesized usingfluoroalkyl alkenylcarboxylic ester as the modifier agent. The reaction was carried outbetween unsaturated double bond (C=C) of fluoroalkyl alkenylcarboxylic ester andprimary amino groups of amino silicon oil side-chain via Michael addition reaction. Theproduct was emulsified to obtain a homogeneous emulsion and then coated onto fabric toincrease the color depth of fabrics. The mechanical of this performance was to reduce therefractive index of amino silicone oil through modification with fluoroalkyl groups.Three kinds of fluoroalkyl alkenylcarboxylic esters, such as hexafluorobutyl acrylate,bis(1H,1H,2H,2H-Tridecafluorooctyl)methylenesuccinate and1H,1H,2H,2H-Tridecafluorooctyl-1-acrylate, were used as modifier agents and three differentfluoroalkyl modified aminosilicone oils were obtained. A series of fluoroalkyl modifiedamino silicone oils with different fluorine content were prepared by controlling the molarratio of the reactants. In addition, nano-SiO2particle was prepared by using tetraethylorthosilicate as the silicon source, ethyl alcohol as the dispersing agents, and ammoniumhydroxide as the catalyst agent via sol-gel method, the particle size of nano-SiO2could becontrolled at about60~700nm. The size and morphology of nano-SiO2particles werecharacterized by FT-IR and SEM.The fluoroalkyl modified amino silicone oil was applied on deepening finishing oncolored polyester fabrics. The K/S values of the deepened colored fabrics were graduallyincreased as the increasing of fluorine content of silicone oil. But too high content offluorine will destroy the deepening dyeing efficiency of fluoroalkyl modifiedaminosilicone oil, this can be ascribed to the worse film forming on the surface of fabric.The deepening efficiency of modified aminosilicone oil with different fluoroalkylgroup was found to be different, even though when they possessed the similar fluorinecontent. A mixed emulsion of two emulsions of hexafluorobutylacrylate modifiedaminosilicone oil with different particle sizes have been mixed and applied on finishing with the K/S value increasing of17.42%. The finishing process of1H,1H,2H,2H-Tridecafluorooctyl-1-acrylate modified silicone oil was optimized as: the dosage ofdeepening agent was30g/L, the baking temperature and baking time were about160℃and120s, respectively. As a result, the K/S value increased up to24.00%.Bis(fluoroalkyl)methylenesuccinate was reacted with aminosilicone oil with differentamino value, it was found that the color-deepening efficiency gradually decreased with theincreasing of amino contents.The refractive indexes of different kinds of fluoroalkyl modified amino silicone oilwere tested to study the relation between the refractive indexes and color-deepeningefficiency. The result showed that the lower refractive index of modified amino oil did notguarantee a better color depth effect. Using different kinds of modified silicone oil to forma multilayer on the polyester fabrics could achieve a better effect of color depth.Finally, nano-SiO2particles were attached onto the polyester fibers successfully andthe surface roughness was obtained, this can achieve the objective of the color depthtowards polyester. Furthermore, fluoroalkyl group modified amino silicone oil andnano-SiO2spheres have been finished on polyester fabrics simultaneously, this can achievethe deepening finishing with the K/S value increase of38.15%.