A kind of all-aqueous ink and preparation method thereof
An all-water-based, ink-based technology, used in inks, air quality improvement, household appliances, etc., can solve the problem of poor compatibility of colorant system and rheological property adjustment system, weak preparation technology of ink precursor pigment colorant, and poor stability of water-based ink. and other problems, to achieve excellent tinting strength and adhesion fastness, good water solubility and resolubility, and good wettability.
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manufacture example 1
[0034] To prepare a water-soluble grinding resin solution:
[0035]5.0L of solvent acetone was added to the 10.0L reactor, and 40g of hydroxyethyl methacrylate (HEMA), 60g of glycidyl methacrylate (GMA), 80g of alginic acid (A) and 200g of styrene (S) were added under nitrogen atmosphere , 5g dibenzoyl peroxide (BPO) was used as initiator, and the temperature was raised to reflux and stirred to carry out radical polymerization reaction for 18-24h;
[0036] Then the acetone was removed under reduced pressure. After the acetone was evaporated to dryness, deionized water was slowly added to adjust the non-volatile components to 35wt%. Finally, 0.2mol / L sodium hydroxide aqueous solution was used to adjust the acid value of the system resin liquid to 168 to obtain a quaternary copolymer. water-soluble grinding resin solution.
Embodiment 1
[0038] Adopt the water-soluble grinding resin liquid prepared in Manufacturing Example 1 as grinding resin to prepare base material, and the method is as follows:
[0039] 240g of water, 160g of water-soluble grinding resin liquid, 500g of pigment (roller carbon black, particle size of 1.1-1.2 microns), 50g of dispersant (TEGO Dispers 760W), 3.5g of defoamer (TEGO Foamex 810) were added to the high-speed After stirring by the mixer for about 30 minutes, then add 45g of the dilute resin emulsion (HC-8102B type ink resin produced by Foshan Sanshui Haocheng Synthetic Resin Co., Ltd.) and disperse it with a high-speed grinder for 1-2 hours to obtain the base material; the described High-speed grinder dispersion refers to grinding at room temperature (20-30°C) at a grinding speed of 2000-2200 rpm; the grinding media used in high-speed grinders are zirconia beads with a particle size of 0.4-0.6mm, The material ratio is 4:1.
Embodiment 2
[0052] During the preparation process of the base material, the present invention surprisingly finds that the base material prepared in winter has good stability, and the particle size is basically distributed between 0.3-0.6 μm; while the base material prepared in summer has poor stability, and the particle size is basically Distributed between 1.2-1.5 μm; so the present invention systematically optimizes the grinding temperature of the base material, the method is as follows:
[0053] 240g of water, 160g of water-soluble grinding resin liquid, 500g of pigment (roller carbon black, particle size of 1.1-1.2 microns), 50g of dispersant (TEGO Dispers 760W), 3.5g of defoamer (TEGO Foamex 810) were added to the high-speed After stirring by the mixer for about 30 minutes, then add 45g of the dilute resin emulsion (HC-8102B type ink resin produced by Foshan Sanshui Haocheng Synthetic Resin Co., Ltd.) and disperse it with a high-speed grinder for 1-2 hours to obtain the base material;...
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