Disclosure of Invention
The invention aims to solve the problems and provide an environment-friendly crease-resistant fabric auxiliary agent and a crease-resistant treatment process thereof.
In order to achieve the aim, the invention provides the technical scheme that the environment-friendly crease-resistant fabric auxiliary agent,
The formula 1 comprises the following components, by mass, 2-4 parts of polyurethane modified polysiloxane, 4-6 parts of polyamide resin, 4-6 parts of menthol, 5-15 parts of surfactant compound ethanolamine ester EPO and 80 parts of water, wherein the polyurethane modified polysiloxane and the polyamide resin are used as raw materials in preparation, the water is used as a solvent for synthesis, the menthol is heated and dissolved in a water bath at 45 ℃ and then is mixed with the ethanolamine ester EPO, then the mixture is put into water and mixed and stirred with the polyurethane modified polysiloxane and the polyamide resin in a magnetic kettle, and after the solution is completely reacted, the mixture is decompressed and concentrated to obtain a No. 1 finishing liquid;
The formula 2 comprises the following components, by mass, 10-20 parts of benzotriazole, 5-10 parts of polyvinyl acetate, 10-20 parts of polyether polyurethane and 50-75 parts of water, wherein the benzotriazole, the polyvinyl acetate and the polyether polyurethane are used as raw materials and water is used as a solvent for synthesis in the preparation process, the mixture is mixed and stirred in a magnetic kettle, and the solution is decompressed and concentrated after the reaction is completed to obtain a No. 2 finishing liquid.
An anti-wrinkle treatment process of an environment-friendly anti-wrinkle fabric auxiliary agent adopts the prepared environment-friendly anti-wrinkle fabric auxiliary agent, and the process comprises the following steps:
dyeing, color matching, color fixation, water washing, dehydration, cloth loosening, shaping, nuclear color, printing, dry shaping, water washing and shaping;
wherein, in the water washing step, the finishing liquid No. 1 with the temperature of 25-45 ℃ and the dosage of 5-10g/L is added into a dye vat, and the water washing time is 15-30min;
wherein, in the shaping step, the finishing liquid No.2 with the temperature of 20-25 ℃ and the dosage of 30-80g/L is added into a dye vat, the shaping temperature is 140-160 ℃ and the vehicle speed is 30-40m/min.
Preferably, in the printing step, the fabric is subjected to printing treatment through a No. 3 finishing liquid, and the preparation process of the No. 3 finishing liquid comprises the following steps:
Dissolving sodium alginate into water at 35 ℃ to obtain sodium alginate solution with the mass fraction of 3%, regulating the pH value of the sodium alginate solution to 3.5 by adopting hydrochloric acid solution with the mass fraction of 0.5mol/L, adding pure water to regulate the pH value of the sodium alginate solution to obtain sodium alginate solution with the mass fraction of 2%, sequentially adding 2.4g/L of glycyrrhizic acid and 0.7g/L of cyclohexyl isocyanate into the sodium alginate solution, stirring the sodium alginate solution in a stirring kettle at the rotating speed of 1200r/min for 1h, standing the sodium alginate solution for 30min, stirring the sodium alginate solution at the rotating speed of 600r/min for 24h for full reaction, dialyzing the sodium alginate solution through a 3500 daltons dialysis membrane for 7d to obtain high-concentration modified alginate solution, adding the high-concentration modified alginate solution into ethanol solution with the mass fraction of 250mL/L, uniformly mixing the high-concentration modified alginate solution with ammonia water/ethanol solution with the volume ratio of 1:20 according to the proportion of 3:5, adding the high-concentration modified alginate solution into the stirring kettle at the temperature of 20-25 ℃ for 12h, and concentrating the high-concentration to obtain finishing liquid with the No. 3.
Preferably, in the printing step, crease-resistant finishing of the finishing liquid No. 3 comprises the following steps of immersing the printed fabric in the finishing liquid No. 3, standing for 10s, padding 1 time by a padding machine to obtain the fabric with 30% liquor rate, carrying out ultrasonic treatment on the fabric for 30min, drying at 20 ℃ and then drying in a 70 ℃ oven for 5min.
Compared with the prior art, the invention has the beneficial effects that:
Firstly, the strong polar urethane groups in the molecular structure of the modified crosslinked polyurethane in the finishing liquid No.1 can form hydrogen bonds with the fabric, so that the intramolecular force is enhanced, the fabric keeps soft hand feeling, the modified crosslinked polyamide molecules can penetrate between fibers of the fabric, and the crease resistance of the fabric is improved by means of the stability and elasticity of the molecular structure of the modified crosslinked polyamide molecules;
Secondly, modifying benzotriazole group polyvinyl acetate in the finishing liquid No. 2, wherein N-hydroxybenzotriazole in a molecular structure reacts with fibers in the fabric and activates carboxyl groups, so that the molecular structure in the fabric fibers is denatured and dehydrated to generate acetic anhydride, and the fabric fibers are subjected to crease-resistant modification;
thirdly, the modified polyurethane-alginate of the high dispersion system in the finishing liquid No.3 can be adhered to the fabric to form a film after padding and ultrasonic curing, and moisture is gradually removed in the film forming process, and the intermolecular and ionic groups of the modified polyurethane-alginate are regularly distributed, so that not only are electrostatic action and hydrogen bonding force, but also crosslinking reaction occurs between molecules to form a network structure, and the adhesive film is firm and elastic and has strong adhesion, so that the fabric has excellent crease resistance.
Detailed Description
In the following description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The environment-friendly crease-resistant fabric auxiliary agent comprises the following components, by mass, 2-4 parts of polyurethane modified polysiloxane, 4-6 parts of polyamide resin, 4-6 parts of menthol, 5-15 parts of surfactant compound ethanolamine ester EPO and 80 parts of water, wherein the polyurethane modified polysiloxane and the polyamide resin are used as raw materials, the water is used as a solvent for synthesis, the menthol is heated and dissolved in a water bath at 45 ℃, then mixed with the ethanolamine ester EPO, then added into water, mixed and stirred with the polyurethane modified polysiloxane and the polyamide resin in a magnetic kettle, and the solution is decompressed and concentrated after the solution is completely reacted to obtain a No. 1 finishing liquid;
The polyurethane modified polysiloxane and polyamide resin are mixed and reacted with menthol and ethanolamine ester EPO to obtain modified cross-linked polyurethane polyamide emulsion, the particle size of the emulsion is below 0.05 mu m, the strong polar urethane groups in the molecular structure of the modified cross-linked polyurethane can form hydrogen bonds with fabrics, the intramolecular force is enhanced, the fabrics keep soft hand feeling, the modified cross-linked polyamide molecules can penetrate between the fibers of the fabrics, and the crease resistance of the fabrics is improved by virtue of the stability and elasticity of the molecular structure of the modified cross-linked polyamide molecules;
the following formula 1 is prepared from the following components in percentage by weight:
The polyurethane modified polysiloxane, polyamide resin, menthol and surfactant compound ethanolamine ester EPO are prepared according to the following mass parts:
① 2 parts, 4 parts and 5 parts;
② 3 parts, 5 parts and 10 parts;
③ 4 parts, 6 parts and 15 parts;
As shown in fig. 1, which shows a graph of anti-wrinkle performance corresponding to three schemes, a crease recovery angle method is adopted to take a 10cm cloth sample, experiments are carried out according to the GB/T3819-1997 standard, the anti-wrinkle performance is increased with the increase of the dosage of polyurethane modified polysiloxane, polyamide resin, menthol and surfactant compound ethanolamine ester EPO, namely 3 parts of polyurethane modified polysiloxane, 5 parts of polyamide resin, 5 parts of menthol and 10 parts of surfactant compound ethanolamine ester EPO are adopted to achieve the maximum crease recovery angle, the anti-wrinkle performance is best, a proper amount of strong polar urethane groups in a polyurethane molecular structure can form hydrogen bonds with fabrics, modified crosslinked polyamide molecules can permeate between fibers of the fabrics, the anti-wrinkle performance of the fabrics is improved by means of the stability and elasticity of the molecular structure of the modified crosslinked polyamide molecules, but the excessive content of polyurethane molecules and modified crosslinked polyamide molecules can influence the quantity of the formed hydrogen bonds and the permeability of the fabrics, meanwhile, the excessive content of polyurethane molecules and the modified crosslinked polyamide molecules can mutually block the formation of the hydrogen bonds and the permeability of the fabrics, and the obtained anti-wrinkle performance of the scheme ② is best.
The formula 2 comprises the following components, by mass, 10-20 parts of benzotriazole, 5-10 parts of polyvinyl acetate, 10-20 parts of polyether polyurethane and 50-75 parts of water, wherein the benzotriazole, the polyvinyl acetate and the polyether polyurethane are used as raw materials and water is used as a solvent for synthesis during preparation, the materials are mixed and stirred in a magnetic kettle, and the solution is decompressed and concentrated after the reaction is completed to obtain a No. 2 finishing liquid;
The modified benzotriazole polyvinyl acetate is obtained after the mixed reaction of benzotriazole, polyvinyl acetate and polyether polyurethane, N-hydroxybenzotriazole in the molecular structure reacts with fibers in the fabric and activates carboxyl, so that the molecular structure in the fabric fibers is denatured and dehydrated to generate acetic anhydride, and the fabric fibers are subjected to crease-resistant modification.
The traditional crease-resistant finishing auxiliary agent adopts 50g/L-150g/L of urea-formaldehyde resin, melamine formaldehyde resin or etherified 2D resin, 10g/L-40g/L of metal salt is used as a catalyst, the addition amount of the catalyst is 10% -20% of the dosage of the resin, free formaldehyde can be released to different degrees under the action of humidity and heat, more free formaldehyde exists on fabrics to influence the wearability of the fabrics, and the formula 1 and the formula 2 in the environment-friendly crease-resistant fabric auxiliary agent do not produce extra free formaldehyde pollution.
An anti-wrinkle treatment process of an environment-friendly anti-wrinkle fabric auxiliary agent adopts the prepared environment-friendly anti-wrinkle fabric auxiliary agent, and the process comprises the following steps:
dyeing, color matching, color fixation, water washing, dehydration, cloth loosening, shaping, nuclear color, printing, dry shaping, water washing and shaping;
Wherein, in the washing step, the No. 1 finishing liquid with the temperature of 25-45 ℃ and the dosage of 5-10g/L is added into a dye vat, and the washing time is 15-30min, wherein, in the shaping step, the No. 2 finishing liquid with the temperature of 20-25 ℃ and the dosage of 30-80g/L is added into the dye vat, and the shaping temperature is 140-160 ℃ and the speed of the vehicle is 30-40m/min;
in the printing step, the fabric is printed through a No. 3 finishing liquid, and the preparation process of the No. 3 finishing liquid comprises the following steps:
Dissolving sodium alginate into water at 35 ℃ to obtain sodium alginate solution with the mass fraction of 3%, regulating the pH value of the sodium alginate solution to 3.5 by adopting hydrochloric acid solution with the mass fraction of 0.5mol/L, adding pure water to regulate the pH value of the sodium alginate solution to obtain sodium alginate solution with the mass fraction of 2%, sequentially adding 2.4g/L of glycyrrhizic acid and 0.7g/L of cyclohexyl isocyanate into the sodium alginate solution, stirring for 1h at the rotating speed of 1200r/min in a stirring kettle, standing for 30min, stirring for 24h at the rotating speed of 600r/min, fully reacting, dialyzing for 7d by using a dialysis membrane of 3500 daltons to obtain high-concentration modified alginate solution, adding the high-concentration modified alginate solution into ethanol solution with the mass fraction of 250mL/L, uniformly mixing the high-concentration modified alginate solution with ammonia water/ethanol solution with the volume ratio of 1:20 according to the proportion of 3:5, adding the high-concentration modified alginate solution into the stirring kettle, stirring for 12h at the temperature of 20-25 ℃, and concentrating the high-concentration to obtain finishing liquid with the number 3;
in the printing step, crease-resistant finishing of the finishing liquid No. 3 comprises the following steps of immersing the printed fabric in the finishing liquid No. 3, standing for 10s, padding for 1 time by a padding machine to obtain a fabric with 30% liquor ratio, carrying out ultrasonic treatment on the fabric for 30min, drying at 20 ℃ and then drying in a 70 ℃ oven for 5min;
the hydrophilic polyurethane-alginate is obtained by reacting hydrophilic groups with alginate and prepolymer-NCO groups during reaction, and the modified polyurethane-alginate with high dispersion is obtained by padding and ultrasonic curing, and can be adhered to fabrics to form films, moisture is gradually removed in the film forming process, the intermolecular and ionic groups are regularly distributed, electrostatic action and hydrogen bonding force exist, and crosslinking reaction also occurs between molecules to form a network structure, so that the adhesive film is firm and elastic, and has strong adhesion, and the fabrics have excellent crease resistance.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.