Preparation method of high-wear-resistance water-based quick-drying ink

Abstract

The invention belongs to the technical field of water-based ink, and particularly relates to a preparation method of high-wear-resistance water-based quick-drying ink which comprises the following components in parts by mass: 30-35 parts of water-based polyurethane resin, 8-12 parts of alkyd resin, 2-4 parts of pigment, 0.8-1.0 part of water-based dispersant, 0.8-1.2 parts of acetylene glycol, 5-8 parts of ethanol, 15-20 parts of distilled water, 2-4 parts of filler, 0.2-0.5 part of anti-settling agent and 2-4 parts of quick-drying agent. The invention also provides a preparation method of the ink. According to the water-based ink, the defects of the existing water-based ink in adhesion and stability are overcome, the adhesive force and cohesion of the ink are improved by utilizing the group activity and cross-linking reactivity of the quick-drying agent, and the stability of the ink is ensured; meanwhile, the permeability and flocculent dispersity of the anti-settling agent are utilized, so that the deposition and caking of precipitates are effectively prevented on the premise of ensuring the stability of the viscosity of the ink.

Description

Technical Field

[0001] The present invention belongs to the technical field of water-based inks, and particularly relates to a preparation method of a highly wear-resistant water-based quick-drying ink. Background Art

[0002] Traditional quick-drying inks are mainly composed of organic solvents, resins, pigments, fillers, etc. However, organic solvents are harmful to human health and also cause volatile pollution. With the development of technology, water-based quick-drying inks have gradually replaced traditional quick-drying inks and become one of the preferred environmentally friendly inks. However, water-based inks use water as a solvent and have good dilutability for resin materials, which will reduce the adhesiveness of the ink, resulting in a decrease in adhesiveness. At the same time, the wear resistance decreases severely. Summary of the Invention

[0003] Aiming at the problems in the prior art, the present invention provides a preparation method of a highly wear-resistant water-based quick-drying ink, which solves the defects of existing water-based inks in adhesiveness and stability. By using the group activity and cross-linking reactivity of the quick-drying agent, the adhesion and cohesion of the ink are improved, and the stability of the ink is ensured; at the same time, by using the permeability and flocculent dispersibility of the anti-settling agent, sediment deposition and caking are effectively prevented on the premise of ensuring the stable viscosity of the ink.

[0004] To achieve the above technical objectives, the technical solution of the present invention is as follows:

[0005] A preparation method of a highly wear-resistant water-based quick-drying ink, the mass ratio of the highly wear-resistant water-based quick-drying ink is: 30 - 35 parts of water-based polyurethane resin, 8 - 12 parts of alkyd resin, 2 - 4 parts of pigment, 0.8 - 1.0 part of water-based dispersant, 0.8 - 1.2 parts of acetylene glycol, 5 - 8 parts of ethanol, 15 - 20 parts of distilled water, 2 - 4 parts of filler, 0.2 - 0.5 part of anti-settling agent, and 2 - 4 parts of quick-drying agent.

[0006] The water-based pigment is one of titanium dioxide, lemon yellow, and phthalocyanine blue.

[0007] The water-based dispersant is sodium dodecylbenzenesulfonate.

[0008] The filler uses porous silicon oxide particles, and the porous silicon oxide particles are prepared from silane. The porous silicon oxide particles have good supportability and porosity, and are rich in silanol groups inside, showing excellent reactivity. The preparation of the porous silicon oxide particles includes the following steps: a1. Add methyltrichlorosilane, dimethyldichlorosilane, and ethyltrichlorosilane to ether and stir evenly, then add ethyl cellulose and stir at a constant temperature and seal. After cooling, a mixed solution is obtained. The molar ratio of methyltrichlorosilane, dimethyldichlorosilane, and ethyltrichlorosilane is 5:1-2:3-4, and the concentration of methyltrichlorosilane in ether is 200-400 g / L. The stirring speed for even stirring is 100-200 r / min. The addition amount of ethyl cellulose is 180-210% of the mass of methyltrichlorosilane. The temperature for constant-temperature sealed stirring is 30-35 °C, and the stirring speed is 300-500 r / min. The temperature for cooling is 0-5 °C. In this step, using ether as a solvent, methyltrichlorosilane, dimethyldichlorosilane, and ethyltrichlorosilane are fully mixed, and ethyl cellulose has good solubility in ether and plays a dispersing role in ether. The constant-temperature sealed stirring process fully considers the volatility and boiling point temperature of ether, uses gas-liquid equilibrium to improve the dispersion effect, and converts the volatilized ether into liquid during cooling, thereby improving the solubility of the solute. In this step, ethyl cellulose, methyltrichlorosilane, dimethyldichlorosilane, and ethyltrichlorosilane are all stably dispersed in ether to achieve full mixing; a2. Spray the mixed solution into an ethanol aqueous solution, let it stand for 20-30 min and then filter. After washing, porous silicon oxide particles are obtained. The spraying speed is 1-2 mL / min, and the spraying area is 200-400 cm 2, the volume ratio of ethanol in the aqueous ethanol solution is 20 - 30%, the spraying temperature is 20 - 30°C, the temperature of the aqueous ethanol solution is 70 - 75°C, and the temperature for standing is 70 - 75°C; the washing is carried out with ethanol; this step uses spraying to disperse the mixture. The droplets contain ethyl cellulose, methyltrichlorosilane, dimethyldichlorosilane, and ethyltrichlorosilane. When the droplets enter the aqueous ethanol solution, distilled water reacts with methyltrichlorosilane, dimethyldichlorosilane, and ethyltrichlorosilane to form hydrolysis reactions, obtaining methyltrihydroxysilane, dimethyldihydroxysilane, and ethyltrihydroxysilane. Combining with the temperature of the aqueous ethanol solution, methyltrihydroxysilane, dimethyldihydroxysilane, and ethyltrihydroxysilane are complexed and polycondensed to form a silicon-oxygen structure containing methyl and ethyl, and ethyl cellulose is contained as a spacer in this silicon-oxygen structure, homogeneously dispersed in the particles of the silicon-oxygen structure. This is a rapid reaction during the process of droplets entering the aqueous ethanol solution. Ethanol has good solubility in ethyl cellulose and can form good softening in the aqueous ethanol solution, which helps water molecules enter, promotes the progress and uniformity of the hydrolysis reaction, and improves the structural looseness of the porous silicon-oxygen particles. The improvement of this looseness helps its permeability and curing effect in the resin of the ink; ethanol washing can effectively remove ethyl cellulose, improve the cleanliness of the porous silicon-oxygen particles, and also ensure the exposure of methyl, ethyl, and silicon hydroxyl groups.

[0009] The anti-settling agent used is aluminum isopropoxide. Aluminum isopropoxide has good solubility in ethanol and isopropanol and has the reaction activity of a welding torch. Ethanol can completely disperse aluminum isopropoxide, and ethanol is miscible with distilled water. Therefore, the anti-settling agent is first added to ethanol and dispersed into distilled water through ethanol. Aluminum isopropoxide directly reacts with distilled water to form aluminum hydroxide, and the aluminum hydroxide precipitate has a flocculent dispersed structure with rich aluminum hydroxyl activity on the surface. This flocculent precipitate can be quickly dispersed throughout the ink, and with its own adsorption property, it effectively ensures the flow of the ink during high-speed operation. At the same time, it belongs to an inorganic material and will not cause an increase in the viscosity of the ink, effectively preventing sedimentation and caking phenomena.

[0010] The quick-drying agent used is a water-soluble titanate coupling agent, specifically bis(acetylacetonato)diisopropoxytitanium. This quick-drying agent has good group activity and can form cross-linking reactions with the active groups contained in resin materials such as polyurethane and alkyd resin, as well as materials such as anti-settling agents and fillers, thereby increasing the overall molecular weight, precisely improving the adhesion and cohesion of the ink, and ensuring the stability of the ink. This quick-drying agent uses Tyzor Aa75 from DuPont, USA.

[0011] The preparation method of the high-wear-resistant water-based quick-drying ink includes the following steps:

[0012] Step 1: Add the anti-settling agent, quick-drying agent, and filler into ethanol, stir at a constant temperature for 20 - 30 min, then spray it into distilled water. After adding the water-based dispersant, stir rapidly at a low temperature to obtain a mixed solution. The temperature of the constant-temperature stirring is 50 - 60°C, the stirring speed is 200 - 400 r / min, the spraying speed is 1 - 2 mL / min, and the spraying area is 100 - 200 cm 2 . The temperature of the rapid stirring at a low temperature is 2 - 5°C, and the speed is 500 - 800 r / min. The quick-drying agent and the anti-settling agent form a stable dispersion in ethanol and are sprayed into distilled water, and cooperate with the water-based dispersant to form a homogeneous dispersion structure. Moreover, the low-temperature stirring ensures the reaction activity in the mixed solution and maintains the relative stability of the active groups.

[0013] Step 2: Add the pigment and acetylene diol into the mixed solution and stir evenly. Then add the water-based polyurethane resin and alkyd resin and stir at a constant temperature for 20 - 30 min to obtain the water-based quick-drying ink. The stirring speed for even stirring is 200 - 400 r / min, and the temperature is 0 - 3°C. The temperature of the constant-temperature stirring is 65 - 70°C, and the stirring speed is 500 - 700 r / min.

[0014] As can be seen from the above description, the present invention has the following advantages:

[0015] 1. The present invention solves the defects of the existing water-based inks in adhesion and stability. By utilizing the group activity and cross-linking reactivity of the quick-drying agent, the adhesion and cohesion of the ink are improved, ensuring the stability of the ink. At the same time, by utilizing the permeability and flocculent dispersibility of the anti-settling agent, sediment deposition and caking are effectively prevented on the premise of ensuring the stable viscosity of the ink.

[0016] 2. The present invention uses acetylene diol as a leveling agent, wetting property, and defoaming property, which helps the deposition and wetting of the ink on food packaging, improves the viscosity of the ink. At the same time, acetylene diol has good hydroxyl activity and can react with the active groups in the anti-settling agent and quick-drying agent.

[0017] 3. The present invention uses alkyd resin and water-based polyurethane resin as the main resins. By utilizing the hydroxyl, carboxyl, and amide groups in the alkyd resin and the hydroxyl, isocyanate group, carboxyl group, etc. in the water-based polyurethane resin to form fixed positions in the resin, and cooperating with the active groups of acetylene diol, filler, anti-settling agent, and quick-drying agent, a multi-dimensional reaction based on active groups is formed, effectively improving the fastness, weather resistance, and strong adhesion of the ink. At the same time, the water-based polyurethane resin and alkyd resin improve the wear resistance of the ink in terms of strong adhesion and structural stability.

[0018] 4. The present invention uses porous silicon oxide particles as fillers to form a resin penetration space, achieving a clamping and fixing effect at the physical level. The methyl and ethyl groups on the surface form a rough surface, improving the surface penetration and connectivity of the fillers. Moreover, the filler surface contains silanol groups, which have hydroxyl activity and can form stable chemical connectivity in the ink. Detailed Embodiment

[0019] The present invention will be described in detail in conjunction with the embodiments, but no limitation is made to the claims of the present invention.

[0020] Embodiment 1

[0021] A preparation method of a highly wear-resistant water-based fast-drying ink, and the mass ratio of the highly wear-resistant water-based fast-drying ink is: 30 parts of water-based polyurethane resin, 12 parts of alkyd resin, 2 parts of pigment, 1.0 part of water-based dispersant, 0.8 part of acetylene glycol, 8 parts of ethanol, 20 parts of distilled water, 2 parts of filler, 0.2 part of anti-settling agent, and 2 parts of fast-drying agent.

[0022] The water-based pigment uses phthalocyanine blue.

[0023] The water-based dispersant uses sodium dodecylbenzenesulfonate.

[0024] The filler uses porous silicon oxide particles, and the porous silicon oxide particles are prepared by using silane. Specifically, the preparation of the porous silicon oxide particles includes the following steps: a1, adding methyltrichlorosilane, dimethyldichlorosilane, and ethyltrichlorosilane to ether and stirring evenly, then adding ethyl cellulose and stirring at a constant temperature and sealing, and obtaining a mixed solution after cooling. The molar ratio of methyltrichlorosilane, dimethyldichlorosilane, and ethyltrichlorosilane is 5:1:4, and the concentration of methyltrichlorosilane in ether is 200 g / L. The stirring speed for even stirring is 100 r / min. The addition amount of ethyl cellulose is 180% of the mass of methyltrichlorosilane. The temperature for constant-temperature sealed stirring is 30 °C, and the stirring speed is 300 r / min. The temperature for cooling is 0 °C; a2, spraying the mixed solution into an ethanol aqueous solution, standing for 20 min and then filtering, and obtaining porous silicon oxide particles after washing. The spraying speed is 1 mL / min, and the spraying area is 200 cm 2 , the volume ratio of ethanol in the ethanol aqueous solution is 20%, the spraying temperature is 20 °C, the temperature of the ethanol aqueous solution is 70 °C, and the standing temperature is 70 °C; the washing uses ethanol washing.

[0025] The anti-settling agent uses aluminum isopropoxide.

[0026] The fast-drying agent uses bis(acetylacetonato)diisopropoxytitanium, and the fast-drying agent uses Tyzor Aa75 of DuPont in the United States.

[0027] The preparation method of the high wear-resistant water-based fast-drying ink comprises the following steps:

[0028] Step 1, adding an anti-settling agent, a fast-drying agent and a filler into ethanol, stirring at a constant temperature for 20 min, then spraying into distilled water, adding a water-based dispersant and rapidly stirring at a low temperature to obtain a mixed solution; the temperature of the constant-temperature stirring is 50 °C, the stirring speed is 200 r / min, the spraying speed is 1 mL / min, and the spraying area is 100 cm 2 , the temperature of the low-temperature rapid stirring is 2 °C, and the speed is 500 r / min;

[0029] Step 2, adding a pigment and acetylene diol into the mixed solution, stirring evenly, then adding a water-based polyurethane resin and an alkyd resin, and stirring at a constant temperature for 20 min to obtain a water-based fast-drying ink. The stirring speed for even stirring is 200 r / min, the temperature is 0 °C, the temperature of the constant-temperature stirring is 65 °C, and the stirring speed is 500 r / min.

[0030] Example 2

[0031] A preparation method of a high wear-resistant water-based fast-drying ink, and the mass ratio of the high wear-resistant water-based fast-drying ink is as follows: 35 parts of water-based polyurethane resin, 8 parts of alkyd resin, 4 parts of pigment, 0.8 part of water-based dispersant, 1.2 parts of acetylene diol, 5 parts of ethanol, 15 parts of distilled water, 4 parts of filler, 0.5 part of anti-settling agent, and 4 parts of fast-drying agent.

[0032] The water-based pigment is lemon yellow.

[0033] The water-based dispersant is sodium dodecylbenzenesulfonate.

[0034] The filler is porous silicon oxide particles, and the porous silicon oxide particles are prepared by using silane. Specifically, the preparation of the porous silicon oxide particles comprises the following steps: a1, adding methyltrichlorosilane, dimethyldichlorosilane and ethyltrichlorosilane into ether, stirring evenly, then adding ethyl cellulose and stirring at a constant temperature and sealing, and obtaining a mixed solution after cooling. The molar ratio of methyltrichlorosilane, dimethyldichlorosilane and ethyltrichlorosilane is 5:2:3, and the concentration of methyltrichlorosilane in ether is 400 g / L. The stirring speed for even stirring is 200 r / min. The addition amount of ethyl cellulose is 210% of the mass of methyltrichlorosilane. The temperature of the constant-temperature sealed stirring is 30-35 °C, the stirring speed is 500 r / min, and the temperature of cooling is 5 °C; a2, spraying the mixed solution into an ethanol aqueous solution, standing for 30 min and then filtering, and obtaining porous silicon oxide particles after washing. The spraying speed is 2 mL / min, and the spraying area is 400 cm 2, the volume ratio of ethanol in the aqueous ethanol solution is 30%, the spraying temperature is 30°C, the temperature of the aqueous ethanol solution is 75°C, and the temperature for standing is 75°C; ethanol is used for washing.

[0035] The anti-settling agent used is aluminum isopropoxide.

[0036] The quick-drying agent used is bis(acetylacetonato)diisopropoxytitanium, and the quick-drying agent used is Tyzor Aa75 from DuPont, USA.

[0037] The preparation method of the high-wear-resistant water-based quick-drying ink includes the following steps:

[0038] Step 1, add the anti-settling agent, quick-drying agent and filler into ethanol, stir at a constant temperature for 30 min, then spray into distilled water, add a water-based dispersant and stir rapidly at a low temperature to obtain a mixture; the temperature for stirring at a constant temperature is 60°C, the stirring speed is 400 r / min, the spraying speed is 2 mL / min, and the spraying area is 200 cm 2 , the temperature for rapid stirring at a low temperature is 5°C, and the speed is 800 r / min;

[0039] Step 2, add the pigment and acetylenediol into the mixture and stir evenly, then add the water-based polyurethane resin and alkyd resin and stir at a constant temperature for 30 min to obtain the water-based quick-drying ink. The stirring speed for stirring evenly is 400 r / min, the temperature is 3°C, the temperature for stirring at a constant temperature is 70°C, and the stirring speed is 700 r / min.

[0040] Example 3

[0041] A preparation method of a high-wear-resistant water-based quick-drying ink, and the mass ratio of the high-wear-resistant water-based quick-drying ink is: 33 parts of water-based polyurethane resin, 10 parts of alkyd resin, 3 parts of pigment, 0.9 part of water-based dispersant, 1.0 part of acetylenediol, 7 parts of ethanol, 18 parts of distilled water, 3 parts of filler, 0.4 part of anti-settling agent, and 3 parts of quick-drying agent.

[0042] The water-based pigment used is titanium dioxide.

[0043] The water-based dispersant used is sodium dodecylbenzenesulfonate.

[0044] The filler is made of porous silicon oxide particles, and the porous silicon oxide particles are prepared from silane. Specifically, the preparation of the porous silicon oxide particles includes the following steps: a1. Add methyltrichlorosilane, dimethyldichlorosilane, and ethyltrichlorosilane to diethyl ether and stir evenly, then add ethyl cellulose and stir at a constant temperature and seal. After cooling, a mixed solution is obtained. The molar ratio of methyltrichlorosilane, dimethyldichlorosilane, and ethyltrichlorosilane is 5:2:4, and the concentration of methyltrichlorosilane in diethyl ether is 300 g / L. The stirring speed for even stirring is 150 r / min. The addition amount of ethyl cellulose is 200% of the mass of methyltrichlorosilane. The temperature for constant-temperature sealed stirring is 33 °C, and the stirring speed is 400 r / min. The temperature for cooling is 3 °C; a2. Spray the mixed solution into an ethanol aqueous solution, let it stand for 25 min and then filter. After washing, porous silicon oxide particles are obtained. The spraying speed is 2 mL / min, and the spraying area is 300 cm 2 , the volume ratio of ethanol in the ethanol aqueous solution is 25%, the spraying temperature is 25 °C, the temperature of the ethanol aqueous solution is 73 °C, and the temperature for standing is 73 °C; The washing is carried out with ethanol.

[0045] The anti-settling agent is aluminum isopropoxide.

[0046] The quick-drying agent is bis(acetylacetonato)diisopropoxytitanium, and this quick-drying agent uses Tyzor Aa75 from DuPont, USA.

[0047] The preparation method of the high-wear-resistant water-based quick-drying ink includes the following steps:

[0048] Step 1. Add the anti-settling agent, quick-drying agent, and filler to ethanol and stir at a constant temperature for 25 min, then spray it into distilled water. After adding a water-based dispersant, stir rapidly at a low temperature to obtain a mixed solution; The temperature for constant-temperature stirring is 55 °C, and the stirring speed is 300 r / min. The spraying speed is 2 mL / min, and the spraying area is 150 cm 2 , the temperature for rapid stirring at low temperature is 4 °C, and the speed is 700 r / min;

[0049] Step 2. Add the pigment and acetylene diol to the mixed solution and stir evenly, then add water-based polyurethane resin and alkyd resin and stir at a constant temperature for 25 min to obtain water-based quick-drying ink. The stirring speed for even stirring is 300 r / min, and the temperature is 2 °C. The temperature for constant-temperature stirring is 68 °C, and the stirring speed is 600 r / min.

[0050] Comparative Example 1

[0051] A preparation method of a highly wear-resistant water-based quick-drying ink, and the mass ratio of the highly wear-resistant water-based quick-drying ink is as follows: 33 parts of water-based polyurethane resin, 10 parts of alkyd resin, 3 parts of pigment, 0.9 part of water-based dispersant, 1.0 part of acetylene glycol, 7 parts of ethanol, 18 parts of distilled water, 3 parts of filler, 0.4 part of anti-settling agent, and 3 parts of quick-drying agent.

[0052] The water-based pigment used is titanium dioxide.

[0053] The water-based dispersant used is sodium dodecylbenzenesulfonate.

[0054] The filler used is nano-silica, and the particle size of the nano-silica is 500 - 700 nm.

[0055] The anti-settling agent used is aluminum isopropoxide.

[0056] The quick-drying agent used is bis(acetylacetonato)diisopropoxytitanium, and the quick-drying agent used is Tyzor Aa75 from DuPont, USA.

[0057] The preparation method of the highly wear-resistant water-based quick-drying ink includes the following steps:

[0058] Step 1, add the anti-settling agent, quick-drying agent, and filler into ethanol, stir at a constant temperature for 25 min, then spray it into distilled water, add the water-based dispersant, and stir rapidly at a low temperature to obtain a mixed solution; the temperature of the constant-temperature stirring is 55 °C, the stirring speed is 300 r / min, the spraying speed is 2 mL / min, and the spraying area is 150 cm 2 , the temperature of the low-temperature rapid stirring is 4 °C, and the speed is 700 r / min;

[0059] Step 2, add the pigment and acetylene glycol into the mixed solution, stir evenly, then add the water-based polyurethane resin and alkyd resin, and stir at a constant temperature for 25 min to obtain the water-based quick-drying ink. The stirring speed for stirring evenly is 300 r / min, the temperature is 2 °C, the temperature of the constant-temperature stirring is 68 °C, and the stirring speed is 600 r / min.

[0060] Comparative Example 2

[0061] A preparation method of a highly wear-resistant water-based quick-drying ink, and the mass ratio of the highly wear-resistant water-based quick-drying ink is as follows: 33 parts of water-based polyurethane resin, 10 parts of alkyd resin, 3 parts of pigment, 0.9 part of water-based dispersant, 1.0 part of acetylene glycol, 7 parts of ethanol, 18 parts of distilled water, 3 parts of filler, 0.4 part of anti-settling agent, and 3 parts of quick-drying agent.

[0062] The water-based pigment used is titanium dioxide.

[0063] The water-based dispersant used is sodium dodecylbenzenesulfonate.

[0064] The filler is made of porous silicon oxide particles, and the porous silicon oxide particles are prepared by using silane. Specifically, the preparation of the porous silicon oxide particles includes the following steps: a1. Add methyltrichlorosilane, dimethyldichlorosilane, and ethyltrichlorosilane into diethyl ether and stir evenly. Then add ethyl cellulose and stir at a constant temperature and seal. After cooling down, a mixed solution is obtained. The molar ratio of methyltrichlorosilane, dimethyldichlorosilane, and ethyltrichlorosilane is 5:2:4, and the concentration of methyltrichlorosilane in diethyl ether is 300 g / L. The stirring speed for even stirring is 150 r / min. The addition amount of ethyl cellulose is 200% of the mass of methyltrichlorosilane. The temperature for constant-temperature sealed stirring is 33 °C, and the stirring speed is 400 r / min. The temperature for cooling down is 3 °C; a2. Spray the mixed solution into an ethanol aqueous solution, let it stand for 25 min and then filter. After washing, porous silicon oxide particles are obtained. The spraying speed is 2 mL / min, and the spraying area is 300 cm 2 , the volume ratio of ethanol in the ethanol aqueous solution is 25%, the spraying temperature is 25 °C, the temperature of the ethanol aqueous solution is 73 °C, and the temperature for standing is 73 °C; The washing is carried out with ethanol.

[0065] The anti-settling agent used is BYK-1180.

[0066] The quick-drying agent used is bis(acetylacetonato)diisopropoxytitanium, and the quick-drying agent used is Tyzor Aa75 from DuPont in the United States.

[0067] The preparation method of the high-wear-resistant water-based quick-drying ink includes the following steps:

[0068] Step 1. Add the anti-settling agent, quick-drying agent, and filler into ethanol and stir at a constant temperature for 25 min. Then spray it into distilled water, add a water-based dispersant, and stir rapidly at a low temperature to obtain a mixed solution; The temperature for constant-temperature stirring is 55 °C, and the stirring speed is 300 r / min. The spraying speed is 2 mL / min, and the spraying area is 150 cm 2 , the temperature for rapid stirring at a low temperature is 4 °C, and the speed is 700 r / min;

[0069] Step 2. Add the pigment and acetylene diol into the mixed solution and stir evenly. Then add water-based polyurethane resin and alkyd resin and stir at a constant temperature for 25 min to obtain the water-based quick-drying ink. The stirring speed for even stirring is 300 r / min, and the temperature is 2 °C. The temperature for constant-temperature stirring is 68 °C, and the stirring speed is 600 r / min.

[0070] Comparative Example 3

[0071] A preparation method of a highly wear-resistant water-based quick-drying ink, and the mass ratio of the highly wear-resistant water-based quick-drying ink is as follows: 33 parts of water-based polyurethane resin, 10 parts of alkyd resin, 3 parts of pigment, 0.9 part of water-based dispersant, 1.0 part of acetylene glycol, 7 parts of ethanol, 18 parts of distilled water, 3 parts of filler, 0.4 part of anti-settling agent, and 3 parts of quick-drying agent.

[0072] The water-based pigment is titanium dioxide.

[0073] The water-based dispersant is sodium dodecylbenzenesulfonate.

[0074] The filler is porous silicon oxide particles, and the porous silicon oxide particles are prepared by silane. Specifically, the preparation of the porous silicon oxide particles includes the following steps: a1, adding methyltrichlorosilane, dimethyldichlorosilane, and ethyltrichlorosilane into ether and stirring evenly, then adding ethyl cellulose and stirring at a constant temperature and sealing. After cooling, a mixed solution is obtained. The molar ratio of methyltrichlorosilane, dimethyldichlorosilane, and ethyltrichlorosilane is 5:2:4, and the concentration of methyltrichlorosilane in ether is 300 g / L. The stirring speed for even stirring is 150 r / min. The addition amount of ethyl cellulose is 200% of the mass of methyltrichlorosilane. The temperature for stirring at a constant temperature and sealing is 33 °C, and the stirring speed is 400 r / min. The temperature for cooling is 3 °C; a2, spraying the mixed solution into an ethanol aqueous solution, standing for 25 min and then filtering, and obtaining porous silicon oxide particles after washing. The spraying speed is 2 mL / min, and the spraying area is 300 cm 2 , the volume ratio of ethanol in the ethanol aqueous solution is 25%, the spraying temperature is 25 °C, the temperature of the ethanol aqueous solution is 73 °C, and the temperature for standing is 73 °C; The washing is carried out with ethanol.

[0075] The anti-settling agent is aluminum isopropoxide.

[0076] The preparation method of the highly wear-resistant water-based quick-drying ink includes the following steps:

[0077] Step 1, adding the anti-settling agent and the filler into ethanol and stirring at a constant temperature for 25 min, then spraying into distilled water, and adding the water-based dispersant and stirring rapidly at a low temperature to obtain a mixed solution; the temperature for stirring at a constant temperature is 55 °C, the stirring speed is 300 r / min, the spraying speed is 2 mL / min, and the spraying area is 150 cm 2 , the temperature for rapid stirring at a low temperature is 4 °C, and the speed is 700 r / min;

[0078] Step 2: Add pigments and acetylene glycol into the mixture and stir evenly. Then add waterborne polyurethane resin and alkyd resin and stir at a constant temperature for 25 min to obtain waterborne quick-drying ink. The stirring speed for even stirring is 300 r / min, the temperature is 2 °C, the temperature for constant-temperature stirring is 68 °C, and the stirring speed is 600 r / min.

[0079] Performance testing

[0080] Using the inks prepared in Examples 1-3 and Comparative Examples 1-3 as test samples, perform performance index testing, and the results are shown in Table 1.

[0081] Table 1: Product performance testing results of Examples 1-3 and Comparative Examples 1-3

[0082]

[0083] Among them, adhesion: Adhere a 40 mm * 20 mm strong tape to the surface of the printed sample, and remove the air bubbles on the adhesion surface by extrusion. After standing for 10 min, quickly peel it off from one end and observe the coating situation on the strong tape. If no coating peeling is found, it is recorded as A; if the peeling area of the coating is less than 5 mm 2 , it is recorded as B; if the peeling area of the coating is 5 - 10 mm 2 , it is recorded as C; if the peeling area of the coating is 10 - 15 mm 2 , it is recorded as D;

[0084] Weather resistance: Use xenon lamp irradiation treatment with 0.5 W / m 2 for 200 h. If there are no aging phenomena such as coating discoloration, peeling, and cracking, it is recorded as A; if there is a slight discoloration phenomenon, it is recorded as B; if there is obvious aging, it is recorded as C;

[0085] Initial dryness: Test the initial dryness of the waterborne ink based on the blade fineness method in the "Test Method for Initial Dryness of Liquid Ink", with a time of 30 s and a temperature of 25 °C.

[0086] Abrasion resistance: Rub the ink-printed product 500 times repeatedly under a test pressure of 20 N. If the coating surface is smooth, it is recorded as A; if there is slight wear on the coating, it is recorded as B; if there is a small amount of wear on the coating, it is recorded as C; if there is obvious wear on the coating, it is recorded as D.

[0087] Water resistance: Wipe the printed sample with a wet cloth. If it does not fade after wiping, it is recorded as A; if it fades after wiping, it is recorded as B.

[0088] The above product performance test results show that: from the comparison between Examples 1-3 and Comparative Example 1, it can be seen that when porous silicon oxide particles are used as fillers, they can utilize their own porous structure, short-chain permeability and the reaction activity of silanol groups to improve the wear resistance of the ink. At the same time, their porosity provides the compatibility between the resin and the porous silicon oxide particles, reducing the impact of the filler on the adhesion of the ink; from the comparison between Examples 1-3 and Comparative Example 2, it can be seen that using aluminum isopropoxide as an anti-settling agent, it is homogeneously dispersed in the resin by its own alcohol solubility, and through in-situ flocculent hydrolysis with the dispersant, it effectively improves the fluidity of the ink and does not affect the adhesion of the ink. At the same time, there is a certain improvement in weather resistance, wear resistance and water resistance; from the comparison between Examples 1-3 and Comparative Example 3, it can be seen that bis(acetylacetonato)diisopropoxytitanium can form a cross-linking reaction with the active groups contained in resin materials such as polyurethane and alkyd resin and materials such as anti-settling agents and fillers, thereby increasing the overall molecular weight, improving the adhesion and wear resistance of the ink, and also improving the rapid drying performance of the ink.

[0089] It can be understood that the above specific description of the present invention is only for explaining the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those of ordinary skill in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effects; as long as it meets the usage requirements, it is within the protection scope of the present invention.

Claims

1. A method for preparing a highly wear-resistant water-based quick-drying ink, characterized in that: The mass ratio of the highly wear-resistant water-based quick-drying ink is: 30-35 parts of water-based polyurethane resin, 8-12 parts of alkyd resin, 2-4 parts of pigment, 0.8-1.0 parts of water-based dispersant, 0.8-1.2 parts of acetylene glycol, 5-8 parts of ethanol, 15-20 parts of distilled water, 2-4 parts of filler, 0.2-0.5 parts of anti-settling agent, and 2-4 parts of quick-drying agent.

2. The method for preparing the highly wear-resistant water-based quick-drying ink according to claim 1, characterized in that: The water-based pigment is one of titanium dioxide, lemon yellow and phthalocyanine blue.

3. The method for preparing the highly wear-resistant water-based quick-drying ink according to claim 1, characterized in that: The aqueous dispersant is sodium dodecylbenzene sulfonate.

4. The method for preparing the highly wear-resistant water-based quick-drying ink according to claim 1, characterized in that: The filler is porous silicon oxide particles, and the porous silicon oxide particles are prepared by using silane.

5. The method for preparing the highly wear-resistant water-based quick-drying ink according to claim 1, characterized in that: The anti-settling agent is aluminum isopropoxide.

6. The method for preparing the highly wear-resistant water-based quick-drying ink according to claim 1, characterized in that: The quick-drying agent is a water-soluble titanate coupling agent.

7. The method for preparing the highly wear-resistant water-based quick-drying ink according to claim 1, characterized in that: The preparation method of the highly wear-resistant water-based quick-drying ink comprises the following steps: Step 1, adding an anti-settling agent, a quick-drying agent and a filler into ethanol and stirring at a constant temperature for 20-30 minutes, then spraying into distilled water, adding an aqueous dispersant and stirring rapidly at a low temperature to obtain a mixed solution; Step 2, adding the pigment and acetylene glycol to the mixed solution and stirring evenly, then adding the water-based polyurethane resin and the alkyd resin and stirring at a constant temperature for 20-30 minutes to obtain a water-based quick-drying ink.

8. The method for preparing the highly wear-resistant water-based quick-drying ink according to claim 7, characterized in that: The constant temperature stirring temperature in step 1 is 50-60°C, the stirring speed is 200-400r / min, the spraying speed is 1-2mL / min, and the spraying area is 100-200cm 2 The temperature of the low-temperature rapid stirring is 2-5°C and the speed is 500-800r / min.

9. The method for preparing the highly wear-resistant water-based quick-drying ink according to claim 7, characterized in that: The stirring speed for uniform stirring in step 2 is 200-400 r / min, the temperature is 0-3°C, the temperature for constant temperature stirring is 65-70°C, and the stirring speed is 500-700 r / min.

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