Background technology
Ink-jet printed technology is a kind of brand-new stamp mode, it has abandoned the complicated link that traditional stamp need to be made a plate, and direct spray printing on fabric has improved the precision of stamp, realize short run, many kinds, multi-color stamp, solved the problems such as traditional stamp floor space is large, seriously polluted.Simultaneously ink-jet printedly spend back flexibly size and printing effect true to nature with it, won more and more human consumers' favor.
And the printing ink that in fact can adopt spraying technique to be sprayed on the fabric only has minute quantity, and because the requirement of strict dyestuffs purity and continuous injection are to the required electric conductivity requirement of ink, other used printing assistants all can not be added in the ink, therefore ink-jet printedly are difficult to obtain blending dyestuff depth color and luster.After textiles must pass through sufficient pre-treatment, employing thickening material dip treating, low viscous printing ink just can be applied on the fabric.And in ink-jet printed technique, act on thickening material on the fabric and can prevent from being ejected into dyestuff imbibition on the fabric, impel dyestuff under humid tropical condition, to be combined with fiber, obtain certain soaping fastness and crock fastness; Owing to form uniform slurry at cloth cover, the fine ink droplet of ejection accurately location absorbs simultaneously, and fineness and the uniformity coefficient of spray printing pattern flower type just are fully guaranteed.
The selection of pretreating reagent is different and different according to the dyestuff composition that contains in the ink.Conventional thickening material can not satisfy ink-jet printed requirement, the scientific worker has done some trials, as add toughener, can improve reactive dyestuffs on dye the set effect, reduce imbibition, disclose a kind for the treatment of process of digital ink jet fabric such as patent CN1707017A, wherein treatment solution is the aqueous solution of thickening material and/or cationic auxiliary.Patent CN101381934 then discloses a kind of color-fixing method and equipment of inking and printing on cotton with active ink, wherein the fabric pre-treatment is adopted and first thickening material is mixed with former paste, other auxiliary agents are added in the former paste after with water dissolution, stirring is modulated into pretreatment fluid again.And in actual production, the different ions auxiliary agent can not be bathed use altogether, and the thickening material high viscosity also can make the operation of padding machine be difficult to carry out.Patent CN101100808 discloses a kind of normal-pressure low-temperature plasma preprocessing technique of pigment ink digital injection stamping fabric, relates to plasma surface modification and processes, and treatment process is comparatively complicated.
Summary of the invention
The technical problem to be solved in the present invention is: solve the technical problem that existing thickening material can not satisfy ink-jet printed requirement, the invention provides a kind of inkjet printing thickener and preparation method thereof, its solid content height, modest viscosity, potential resistance to electrolyte contamination ability are strong, can use in conjunction with padding technique during ink-jet printed pre-treatment, applicable to the pre-treating technology that pigment inkjet stamp, reactive dye ink are ink-jet printed, acid dye ink is ink-jet printed of cotton, silk, polyester piece good.
The technical scheme that the present invention solves its technical problem employing is: a kind of preparation method of inkjet printing thickener, and it is mixed to pH value 6.5~7 with ammoniacal liquor and acrylic monomer, and the adding linking agent mixes and is made into water; Emulsifying agent and organic solvent are made into oil phase; Under stirring state, water is added in the oil phase, drips initiator solution, 50~80 ℃ of lower polymerization times of preparation temperature 1~4 hour, cooling discharge adds the phase inversion agent, fully stirs evenly, and obtains finished product.
As preferably, acrylic monomer is selected from vinylformic acid and/or methacrylic acid and/or methylene-succinic acid.
As preferably, the initiator redox system that to be ammonium persulphate or Potassium Persulphate form with sodium bisulfite or Sodium Hydrosulphite, the initiator quality is 0.1%~2.4% of monomer mass; More preferably 0.25%~2.05%; The best is 2%.
As preferably, emulsifying agent is sorbitan fatty acid ester and/or polyoxyethylene sorbitan fatty acid ester, and the emulsifying agent quality is 2%~10.9% of monomer mass; More preferably 5%~10%; The best is 8%.
As preferably, organic solvent is 5# white oil and/or hexanaphthene, monomer mass: the organic solvent quality is 0.23~0.6: 1; More preferably 0.26~0.5: 1; The best is 0.4: 1.
As preferably, linking agent is N, a N ' methylene-bisacrylamide and/or N hydroxymethyl acrylamide and/or Phthalic acid, diallyl ester, and the linking agent quality is 0.08%~0.27% of monomer mass; More preferably 0.1%~0.2%.
As preferably, the phase inversion agent is isomery C10 polyoxyethylenated alcohol or isomery C13 polyoxyethylenated alcohol.
As preferably, preparation temperature is 68~70 ℃.
As preferably, polymerization time is 3 hours.
The invention has the beneficial effects as follows that inkjet printing thickener of the present invention can make ink-jet printed decorative pattern clear, painted darker without the imbibition phenomenon, and without the environmental protection problem.
Specific embodiments
The invention will be further described below in conjunction with embodiment, and reference when embodiment only supplies to understand technology contents does not limit protection scope of the present invention:
Embodiment one:
Take by weighing 8g vinylformic acid in four-hole boiling flask, drip load weighted ammoniacal liquor 15g (in the cooling bath, being no more than 40 ℃) to pH value 6.5-7, stop neutralization, add 0.016g N, a N ' methylene-bisacrylamide stirs 10min.
Get 0.4g span-80 and fully mix with 20g 5# white oil, 15g hexanaphthene, join aqueous phase, after the high-speed stirring, add 0.013g Potassium Persulphate and 0.007g aqueous solution of sodium bisulfite, be warming up to 50 ℃, be incubated 3 hours, cooling discharge, add phase inversion agent XL-50, fully stir evenly, obtain finished product.
Embodiment two:
Take by weighing 10g vinylformic acid, 5g methacrylic acid, 7g methylene-succinic acid in four-hole boiling flask, drip load weighted ammoniacal liquor 22g (in the cooling bath, being no more than 40 ℃) to pH value 6.5-7, stop neutralization, add the 0.06g N hydroxymethyl acrylamide, stir 15min.
Getting 1.4g span-80,1g tween-80 fully mixes with 50g 5# white oil, 35g hexanaphthene, join aqueous phase, after the high-speed stirring, add 0.35g Potassium Persulphate and 0.1g aqueous solution of sodium bisulfite, be warming up to 68 ℃, be incubated 1 hour, cooling discharge adds phase inversion agent XL-50, fully stir evenly, obtain finished product.
Embodiment three:
Take by weighing 15g methacrylic acid, 10g methylene-succinic acid in four-hole boiling flask, drip load weighted ammoniacal liquor 22g (in the cooling bath, being no more than 40 ℃) to pH value 6.5-7, stop neutralization, add 0.01g N hydroxymethyl acrylamide, 0.015g Phthalic acid, diallyl ester, stir 15min.
Get 1.5g span-80,0.5g tween-80 and fully mix with 50g 5# white oil, join aqueous phase, after the high-speed stirring, add 0.4g Potassium Persulphate and 0.2g aqueous solution of sodium bisulfite, be warming up to 80 ℃, be incubated 4 hours, cooling discharge, add phase inversion agent T-07, fully stir evenly, obtain finished product.
Embodiment four:
Take by weighing 20g vinylformic acid in four-hole boiling flask, drip load weighted ammoniacal liquor 15g (in the cooling bath, being no more than 40 ℃) to pH value 6.5-7, stop neutralization, add 0.016g N, a N ' methylene-bisacrylamide stirs 10min.
Get 0.4g span-80 and fully mix with 20g 5# white oil, 15g hexanaphthene, join aqueous phase, after the high-speed stirring, add 0.013g Potassium Persulphate and 0.007g aqueous solution of sodium bisulfite, be warming up to 70 ℃, be incubated 3 hours, cooling discharge, add phase inversion agent XL-50, fully stir evenly, obtain finished product.
Embodiment five:
Take by weighing 30g vinylformic acid in four-hole boiling flask, drip load weighted ammoniacal liquor 22g (in the cooling bath, being no more than 40 ℃) to pH value 6.5-7, stop neutralization, add the 0.06g N hydroxymethyl acrylamide, stir 15min.
Getting 2g span-80,1g tween-80 fully mixes with 50g 5# white oil, 35g hexanaphthene, join aqueous phase, after the high-speed stirring, add 0.4g Potassium Persulphate and 0.2g aqueous solution of sodium bisulfite, be warming up to 68 ℃, be incubated 4 hours, cooling discharge, add phase inversion agent XL-50, fully stir evenly, obtain finished product.
Embodiment six:
Inking and printing on cotton with active ink
1. pretreatment technology
The pretreating reagent prescription:
Urea 100g/L
Sodium bicarbonate 40g/L
Inkjet printing thickener 20g/L
Residue is water
To pad in fabric and the pretreating reagent, pick-up 70% is 100 ℃ of oven dry.
2. ink-jet printed and aftertreatment technology
Ink-jet printed → seal post-drying → decatize → as to wash → soap → as to wash → shaping and drying.
Stamp clear-cut, edge are without imbibition, and fabric backing detects through color measurement instrument and sees through without mill base.
Embodiment seven:
Polyester piece good pigment inkjet printing technology
Inkjet printing thickener 50g/L
Residue is water
Technique: fabric through two soak two roll (pick-up 50%) → oven dry → ink-jet printed → heat setting type (180 ℃, 30s) stamp clear-cut, edge be without imbibition, fabric backing detects through color measurement instrument and sees through without mill base.