Environment-friendly water-based ink solvent with high drying efficiency and preparation method thereof

Abstract

The invention relates to the technical field of ink solvents, and particularly discloses an environment-friendly water-based ink solvent with high drying efficiency and a preparation method of the environment-friendly water-based ink solvent. The environment-friendly water-based ink solvent with high drying efficiency is prepared from the following raw materials in parts by weight: 40 to 60 parts of water, 30 to 50 parts of bio-based alcohol compound, 5 to 15 parts of n-propyl acetate, 0.3 to 1 part of tripropylene glycol n-butyl ether, 1 to 3 parts of nano cellulose, 0.5 to 1 part of calcium chloride, 1 to 2 parts of pH regulator and 0.2 to 0.4 part of chelating agent. The environment-friendly water-based ink solvent with high drying efficiency and the preparation method thereof can be used for ink printing, and have the advantages of high drying efficiency and good stability.

Description

Technical Field

[0001] This invention relates to the field of ink solvent technology, and in particular to an environmentally friendly water-based ink solvent with high drying efficiency and its preparation method. Background Technology

[0002] In recent years, with the development of the global economy and the improvement of people's living standards, the printing industry has ushered in a period of vigorous development. From everyday product packaging to various publications, printed materials are ubiquitous, leading to a growing demand for inks. As an indispensable key material in the printing process, the performance of ink directly affects the quality of printing and the speed of production. With environmental protection concepts gaining widespread acceptance, the research and application of environmentally friendly inks has become an important direction for the printing industry. Among them, water-based inks, with their significant characteristic of low volatile organic compound (VOC) emissions, have gradually gained a mainstream position in the market. They have been widely used in many fields such as packaging printing and publication printing, playing a positive role in promoting the printing industry towards a green and environmentally friendly direction. Moreover, the use of water-based inks reduces environmental pollution and helps create a healthier and more sustainable ecological environment. However, with the market's increasing demands for printing efficiency and environmental protection, some problems with water-based inks have gradually emerged, and how to solve these problems has become a pressing issue for the industry.

[0003] In the traditional printing industry, two main types of inks are typically used to achieve ink drying: water-based inks and solvent-based inks. Solvent-based inks were widely used for a considerable period, primarily drying through the rapid evaporation of the solvent. This drying method met the needs of printing production to a certain extent, but with strict global restrictions on VOC emissions, the use of solvent-based inks has been severely limited. Companies need to invest significant funds and equipment to treat VOC emissions, which not only increases production costs but also exposes them to the risk of failing to meet environmental standards. While water-based inks, as an alternative to solvent-based inks, are gaining market share, their solvents face the challenge of difficult evaporation during production. Traditional water-based ink solvents are mainly water-based, which has a high latent heat of vaporization and a high boiling point, requiring a large amount of heat energy to evaporate. This means that drying water-based inks requires more energy, increasing energy consumption and production costs. Furthermore, the strong hydrogen bond network in traditional water-based systems creates an evaporation resistance approximately six times greater than that of solvent-based systems, further hindering solvent evaporation. Furthermore, during the drying process, water-based inks are prone to surface sealing, where the ink surface dries rapidly and forms a sealed film, making it difficult for internal moisture to evaporate. This results in uneven drying speeds for water-based inks, affecting print quality.

[0004] The persistent problem of solvent evaporation in water-based inks severely impacts printing production efficiency. Furthermore, solvent and additive residues are a significant concern, affecting not only print quality but also posing potential health and environmental hazards. These issues have become critical factors hindering the further development of water-based inks, necessitating the development of an environmentally friendly solvent that improves drying efficiency and reduces solvent and additive residues. Summary of the Invention

[0005] To improve the drying efficiency of water-based inks, this application provides an environmentally friendly water-based ink solvent with high drying efficiency and its preparation method.

[0006] Firstly, this application provides an environmentally friendly water-based ink solvent with high drying efficiency, employing the following technical solution: An environmentally friendly water-based ink solvent with high drying efficiency, comprising the following raw materials in parts by weight: 40-60 parts water, 30-50 parts bio-based alcohols, 5-15 parts n-propyl acetate, 0.3-1 part tripropylene glycol n-butyl ether, 1-3 parts nanocellulose, 0.5-1 part calcium chloride, 1-2 parts pH adjuster, and 0.2-0.4 parts chelating agent.

[0007] By employing the above technical solution, bio-based alcohol compounds and n-propyl acetate work synergistically to disrupt hydrogen bond sites, reduce the hydrogen bonding effect, effectively lower the latent heat of vaporization of the solvent, and accelerate the evaporation rate. Combined with tripropylene glycol n-butyl ether, it can react with resin particles during ink printing, softening the resin particles and lowering the film-forming temperature. Simultaneously, its high boiling point prevents the ink surface from drying too quickly and forming a sealed film during printing, ensuring both efficient drying and ink printing quality. Nanocellulose acts as a thickener, increasing the adhesion of the ink to the substrate and constructing moisture diffusion channels, accelerating the drying rate. Calcium chloride helps regulate the drying speed of the solvent, playing a role in absorbing moisture during the drying process, reducing the impact of environmental humidity on the drying of water-based inks, further accelerating drying efficiency and maintaining solvent stability under different humidity conditions. A pH adjuster maintains the stability of the system's acidity and alkalinity, and a chelating agent can complex metal ions to prevent them from interfering with the reaction, ensuring the storage stability of the solvent. This application's solution, through the combined action of multiple components, significantly improves drying efficiency while ensuring environmental performance and printing quality.

[0008] Optionally, the bio-based alcohol compound is obtained by mixing bio-based ethanol and bio-based isopropanol in a weight ratio of 4-6:3.

[0009] By employing the above technical solution, bio-based ethanol and bio-based isopropanol are mixed at a weight ratio of 4-6:3 as a bio-based alcohol compound and applied to the solvent of this environmentally friendly water-based ink. The hydroxyl groups in the bio-based ethanol molecule have high activity, enabling rapid interaction with polar components in the ink and promoting their dissolution and dispersion. Bio-based isopropanol, with its large molecular volume and unique spatial structure, effectively reduces the surface tension of the solvent system, enhancing the wetting properties of the ink. The two compounds, mixed in a specific ratio, synergistically exert their dissolving and wetting effects, allowing the ink to spread and penetrate better on the printing substrate. Simultaneously, the bio-based origin endows it with good environmental friendliness. During the drying process, both compounds are easily volatile with a moderate evaporation rate, ensuring rapid drying and curing of the ink while avoiding problems such as ink shrinkage and cracking caused by excessive evaporation, thereby improving printing quality and drying efficiency.

[0010] Optionally, the weight ratio of n-propyl acetate to tripropylene glycol n-butyl ether is (8-12):1.

[0011] By adopting the above technical solution, n-propyl acetate, as a fast-drying component, rapidly evaporates on the surface of the liquid film, opening microporous channels. Tripropylene glycol n-butyl ether, with its long-chain ethoxy structure, forms a hydrophilic molecular film on the pore wall to prevent micropore collapse and guide deep water to escape, thereby increasing the solvent drying rate. At the same time, the weak hydrogen bonds formed by the two weaken the binding energy of the water hydrogen bond network, reducing the size of water molecule clusters and lowering the evaporation activation energy. Furthermore, the ether bonds of tripropylene glycol anchor water molecules and accelerate the detachment of interfacial water molecules through the molecular thermal wobbling effect. Moreover, the two form a microphase separation structure, generating a local Marangoni effect, driving the formation of vortex convection inside the ink film, increasing the water diffusion flux, eliminating the boundary layer retention effect, and further improving the solvent evaporation rate.

[0012] Optionally, the nanocellulose is carboxylated nanocellulose with a diameter of 20-50 nm and an aspect ratio of >50.

[0013] By employing the above technical solution, the high aspect ratio rod-shaped structure is oriented to form a continuous three-dimensional nano-network channel. The huge specific surface area provides a low-resistance diffusion path for water molecules, thereby increasing the water migration rate. In addition, the carboxyl groups ionize in an alkaline environment to generate strong negative charge, which adsorbs hydrated protons through electrostatic interaction, inducing directional electroosmosis and attracting water molecules to migrate rapidly to the solvent surface. Furthermore, the surface hydroxyl groups disintegrate large water molecule clusters through an "adsorption-desorption" cycle, reducing evaporation energy. At the same time, the carboxyl groups and calcium chloride release Ca2+. 2+ By forming weak coordination bonds, the solvent can temporarily retain moisture to prevent moisture return under high humidity, and break the bonds during drying to ensure unobstructed channels. The synergistic effect of multiple mechanisms greatly improves the drying efficiency and performance stability of the solvent.

[0014] By limiting the diameter and aspect ratio, carboxylated nanocellulose can fully contact and interact strongly with the resin, pigment and other components in the ink. Through physical adsorption and chemical bonding (carboxyl groups can participate in chemical reactions), the dispersed components are tightly connected together, effectively enhancing the cohesion and stability of the ink system and preventing pigment sedimentation and ink stratification.

[0015] Optionally, the pH adjuster is 2-amino-2-methyl-1-propanol.

[0016] By adopting the above technical solution, 2-amino-2-methyl-1-propanol (AMP-95) was selected as the pH adjuster for this high-drying-efficiency, environmentally friendly water-based ink solvent. Its tertiary amine group reacts with the H+ ions released from water dissociation. + By combining specific ionic structures, a dynamic buffer system is constructed, maximizing the electrostatic repulsion between nanofibers, preventing aggregation, and ensuring unobstructed water channels. Simultaneously, the enhanced alkalinity of the system promotes the recombination of the hydrogen bond network, lowers the activation energy of water molecule evaporation, and accelerates water evaporation. Furthermore, its α-amino alcohol structure forms a complementary coordination chain with the chelating agent disodium EDTA, preferentially adsorbing catalytic metal ions, blocking the oxidative free radical chain reaction initiated by metal ions, preventing increased film-forming resistance caused by resin pre-crosslinking in the ink, and thus improving water diffusion flux. This multi-mechanism synergistic effect significantly improves the solvent drying efficiency and system stability.

[0017] Optionally, the chelating agent is disodium ethylenediaminetetraacetate.

[0018] By adopting the above technical solution, the drying efficiency of the solvent and the stability of the system are significantly improved. Its hexadecimal ligand structure preferentially forms a highly stable stereochelate with metal ions, blocking the free Ca2+ ionization. 2+ Crosslinking with carboxylated nanocellulose avoids the formation of a gel network that would block water diffusion channels, ensuring smooth water diffusion within the solvent system and thus improving drying efficiency. On the other hand, strong chelation of transition metal ions inhibits their catalytic oxidation reaction, preventing oxidative prepolymerization of the resin and maintaining the stability of the solvent system. This avoids increased film-forming resistance due to resin prepolymerization and inhibits the decomposition of chromophores caused by peroxides, ensuring stable ink color. Through multiple synergistic effects, a comprehensive improvement in drying efficiency, film quality, and system stability is ultimately achieved.

[0019] Optionally, the raw material may also include 0.1-0.5 parts of acetylenic diol surfactant.

[0020] By employing the above technical solution, in terms of dynamic surface tension control, its unique alkynyl-dihydroxy structure can be oriented at the gas-liquid interface, significantly reducing the solvent surface tension and rapidly reducing it to a steady-state value, quickly driving the migration of water inside the ink film to the surface. Simultaneously, the steric hindrance effect of the branched alkyl groups effectively suppresses foam formation. Regarding the synergistic effect of nanochannels, its hydroxyl groups and the -COO groups of carboxylated nanocellulose... - The formation of weak hydrogen bonds induces the directional arrangement of nanocellulose at the solvent interface, constructing a "radial" moisture conduction network and reducing the resistance to deep moisture diffusion. During the optimization of liquid film thinning kinetics, the intensified thermal motion of alkynyl groups at the drying temperature triggers Marangoni convection, which significantly increases the liquid film thinning rate and prevents the obstruction of internal moisture evaporation caused by surface crusting. The drying efficiency is improved through the synergistic effect of multiple mechanisms.

[0021] Secondly, this application provides a method for preparing an environmentally friendly water-based ink solvent with high drying efficiency, using the following technical solution: A method for preparing an environmentally friendly water-based ink solvent with high drying efficiency includes the following steps: Bio-based alcohol compounds, n-propyl acetate, calcium chloride, and chelating agents are mixed and heated to 35-45℃ and stirred until a transparent solution is formed, resulting in a mixed solvent. Water is added and dispersed at 2000-3000 rpm for 5-10 minutes. Then, a pH adjuster, tripropylene glycol n-butyl ether, and nanocellulose are added sequentially and mixed and stirred to obtain an environmentally friendly water-based ink solvent with high drying efficiency.

[0022] In summary, this application has the following beneficial effects: 1. This application utilizes a multi-component synergistic design to effectively accelerate the solvent evaporation process. Bio-based alcohols and n-propyl acetate synergistically disrupt the hydrogen bond network between water molecules, reducing the latent heat of vaporization; tripropylene glycol n-butyl ether delays excessively rapid film formation on the surface, preventing a "sealing effect" and ensuring continuous escape of internal moisture; carboxylated nanocellulose constructs interconnected three-dimensional nanochannels, providing a low-resistance path for moisture diffusion and inducing electroosmotic flow through electrostatic interactions, promoting the directional migration of water molecules; 2-amino-2-methyl-1-propanol adjusts the pH of the system, maintaining a high zeta potential on the nanocellulose surface, preventing aggregation, and simultaneously participating in hydrogen bond recombination, further reducing the evaporation activation energy. The synergistic effect of these mechanisms significantly improves the solvent drying rate and energy utilization efficiency.

[0023] 2. The disodium ethylenediaminetetraacetate in this application can efficiently chelate metal ions, inhibit the oxidation side reactions and resin pre-crosslinking initiated by metal ions, and prevent ink deterioration and film-forming performance degradation; calcium chloride regulates drying kinetics, mitigates the impact of environmental humidity fluctuations on the drying process, and improves process stability. The preferred ratio of n-propyl acetate to tripropylene glycol n-butyl ether achieves a balance between fast and slow volatile components, avoiding printing defects such as cracking and wrinkling.

[0024] 3. Using bio-based ethanol and bio-based isopropanol as the main co-solvents, the raw materials are renewable, with low VOC emissions, aligning with the trend of green printing. The overall formula contains no toxic solvents, is environmentally friendly, and is suitable for packaging and publishing printing fields with high environmental protection requirements. Detailed Implementation

[0025] The following detailed description of this application is provided in conjunction with the embodiments. It should be noted that: unless otherwise specified, the conditions in the following embodiments are performed under conventional conditions or conditions recommended by the manufacturer. Unless otherwise specified, the raw materials used in the following embodiments are all from commercially available sources.

[0026] Surfynol 104E was selected as the surfactant and purchased from Jining Tangyi Chemical Co., Ltd.; the bio-based ethanol can be derived from the fermentation process of corn, sugarcane, cassava or cellulose biomass; the bio-based isopropanol can be obtained through the biohydrogenation of biomass-derived acetone or microbial fermentation.

[0027] Example 1 An environmentally friendly water-based ink solvent with high drying efficiency is prepared by the following steps: 40 kg of bio-based alcohol compound, 10 kg of n-propyl acetate, 0.8 kg of calcium chloride, and 0.3 kg of disodium ethylenediaminetetraacetate (chelating agent) were mixed and heated to 40°C, and stirred until a transparent solution was formed to obtain a mixed solvent. 50 kg of water was added and dispersed at 2500 rpm for 8 min. Then, 1.5 kg of 2-amino-2-methyl-1-propanol (pH adjuster), 0.65 kg of tripropylene glycol n-butyl ether, and 2 kg of carboxylated nanocellulose were added sequentially and stirred to obtain an environmentally friendly water-based ink solvent with high drying efficiency. The bio-based alcohol compound was obtained by mixing bio-based ethanol and bio-based isopropanol in a weight ratio of 5:3. The carboxylated nanocellulose had a diameter of 20-50 nm and an aspect ratio > 50.

[0028] Example 2 An environmentally friendly water-based ink solvent with high drying efficiency is prepared by the following steps: 30 kg of bio-based alcohol compound, 15 kg of n-propyl acetate, 0.5 kg of calcium chloride, and 0.4 kg of disodium ethylenediaminetetraacetate (chelating agent) were mixed and heated to 35°C, and stirred until a transparent solution was formed to obtain a mixed solvent. 40 kg of water was added and dispersed at 3000 rpm for 5 min. Then, 1 kg of 2-amino-2-methyl-1-propanol (pH adjuster), 1 kg of tripropylene glycol n-butyl ether, and 1 kg of carboxylated nanocellulose were added sequentially and stirred to obtain an environmentally friendly water-based ink solvent with high drying efficiency. The bio-based alcohol compound was obtained by mixing bio-based ethanol and bio-based isopropanol in a weight ratio of 6:3. The carboxylated nanocellulose had a diameter of 20-50 nm and an aspect ratio > 50.

[0029] Example 3 An environmentally friendly water-based ink solvent with high drying efficiency is prepared by the following steps: 50 kg of bio-based alcohol compound, 5 kg of n-propyl acetate, 1 kg of calcium chloride, and 0.2 kg of disodium ethylenediaminetetraacetate (chelating agent) were mixed and heated to 45°C, and stirred until a transparent solution was formed to obtain a mixed solvent. 60 kg of water was added and dispersed at 2000 rpm for 10 min. Then, 2 kg of 2-amino-2-methyl-1-propanol (pH adjuster), 0.3 kg of tripropylene glycol n-butyl ether, and 3 kg of carboxylated nanocellulose were added sequentially and stirred to obtain an environmentally friendly water-based ink solvent with high drying efficiency. The bio-based alcohol compound was obtained by mixing bio-based ethanol and bio-based isopropanol in a weight ratio of 4:3. The carboxylated nanocellulose had a diameter of 20-50 nm and an aspect ratio > 50.

[0030] Example 4 An environmentally friendly water-based ink solvent with high drying efficiency is different from Example 1 in that 6.5 kg of n-propyl acetate is added in this example to replace the original components, while the remaining steps and components are the same as in Example 1.

[0031] Example 5 An environmentally friendly water-based ink solvent with high drying efficiency is different from Example 1 in that 5.2 kg of n-propyl acetate is added in this example to replace the original components, while the remaining steps and components are the same as in Example 1.

[0032] Example 6 An environmentally friendly water-based ink solvent with high drying efficiency is different from Example 1 in that 7.8 kg of n-propyl acetate is added in this example to replace the original components, while the remaining steps and components are the same as in Example 1.

[0033] Example 7 An environmentally friendly water-based ink solvent with high drying efficiency, differing from Example 4 in that 0.25 kg of acetylenic diol surfactant is also added in this example. The preparation includes the following steps: 40 kg of bio-based alcohol compound, 10 kg of n-propyl acetate, 0.8 kg of calcium chloride, and 0.3 kg of disodium ethylenediaminetetraacetate (chelating agent) were mixed and heated to 40°C, and stirred until a transparent solution was formed to obtain a mixed solvent. 50 kg of water was added and dispersed at 2500 rpm for 8 min. Then, 1.5 kg of 2-amino-2-methyl-1-propanol (pH adjuster), 1 kg of tripropylene glycol n-butyl ether, and 2 kg of carboxylated nanocellulose were added sequentially and stirred. Finally, 0.25 kg of acetylation diol surfactant was added, and the mixture was sheared and homogenized to obtain an environmentally friendly water-based ink solvent with high drying efficiency. The bio-based alcohol compound was obtained by mixing bio-based ethanol and bio-based isopropanol in a weight ratio of 5:3. The carboxylated nanocellulose had a diameter of 20-50 nm and an aspect ratio > 50.

[0034] Example 8 An environmentally friendly water-based ink solvent with high drying efficiency, which differs from Example 7 in that 0.1 kg of acetylation diol surfactant is added in this example.

[0035] Example 9 An environmentally friendly water-based ink solvent with high drying efficiency, which differs from Example 7 in that 0.5 kg of acetylation diol surfactant is added in this example.

[0036] Comparative Example 1 An environmentally friendly water-based ink solvent with high drying efficiency, which differs from Example 1 in that carboxylated nanocellulose was not added in this comparative example.

[0037] Comparative Example 2 An environmentally friendly water-based ink solvent with high drying efficiency differs from Example 1 in that conventional alcohols are used instead of bio-based alcohols in this comparative example, that is, bio-based ethanol and bio-based isopropanol are used in equal amounts of petroleum-based ethanol and isopropanol.

[0038] Comparative Example 3 An environmentally friendly water-based ink solvent with high drying efficiency, which differs from Example 1 in that calcium chloride and disodium ethylenediaminetetraacetate were not added in this comparative example.

[0039] Performance testing Detection methods / test methods Surface tension (mN / m): The surface tension of the solvent was determined according to GB / T 22237-2008 "Determination of Surface Tension of Surfactants"; Evaporation rate (relative value, with ethyl acetate = 1): The evaporation rate of the solvent is tested according to the relevant method of ASTM D3539-11 (2020); Drying energy consumption (kWh / kg): The energy consumption for solvent drying was calculated according to the relevant methods in GB / T 2589-2020 "General Rules for Calculation of Comprehensive Energy Consumption"; Storage stability (30 days): The viscosity change rate of the solvent was tested according to the method shown in GB / T 6753.3-1986 "Test Method for Storage Stability of Coatings". The lower the viscosity change rate, the better the storage stability of the solvent.

[0040] Table 1 Test Data

[0041] Combining Examples 1-3 and Comparative Example 1 with Table 1, it can be seen that the experimental data of Examples 1-3 are all better than those of Comparative Example 1. This indicates that the addition of nanocellulose forms a certain network structure in the solvent. This structure can increase the space for movement and diffusion channels of solvent molecules, promote the volatilization of solvent molecules, and enable the solvent to change from liquid to gaseous state more quickly during the drying process, thereby reducing the drying time and improving the drying efficiency.

[0042] Combining Examples 1-3 and Comparative Example 2 with Table 1, it can be seen that the experimental data of Examples 1-3 are all better than those of Comparative Example 2. This indicates that bio-based alcohols are more likely to change from liquid to gas at room temperature, which accelerates the evaporation rate of the solvent. As a result, the solvent can be removed more quickly during the drying process, reducing drying time and energy consumption.

[0043] Combining Examples 1-3 and Comparative Example 3 with Table 1, it can be seen that the experimental data of Examples 1-3 are all better than those of Comparative Example 3, indicating that Cu in the EDTA chelated ink... 2+ 、Fe 3+ Trace amounts of metal impurities are removed to prevent catalytic oxidation and cross-linking; CaCl2 inhibits the dissociation of cellulose carboxyl groups through the common ion effect, reducing hydrogen bond aggregation. The lack of these two substances will lead to flocculation in the system and affect the storage stability of the solvent.

[0044] Based on Examples 1-6 and Table 1, it can be seen that the experimental data of Examples 4-6 are better than those of Examples 1-3. This indicates that further control of the addition ratio of n-propyl acetate to tripropylene glycol n-butyl ether can adjust the overall evaporation rate of the solvent to an optimal value, making the evaporation process before and after the process stable and efficient.

[0045] Combining Examples 4 and 7-9 with Table 1, it can be seen that the experimental data of Examples 7-9 are better than those of Example 4. This indicates that the addition of acetylacetonate surfactant can rapidly arrange itself on the solvent surface to form a tight molecular film, weakening the cohesive force between solvent molecules, thereby significantly reducing surface tension, increasing the evaporation rate of the solvent, and further improving the various properties of the ink solvent.

[0046] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. An environmentally friendly water-based ink solvent with high drying efficiency, characterized in that, Including the following parts by weight of raw materials: 40-60 parts water, 30-50 parts bio-based alcohols, 5-15 parts n-propyl acetate, 0.3-1 part tripropylene glycol n-butyl ether, 1-3 parts nanocellulose, 0.5-1 part calcium chloride, 1-2 parts pH adjuster, and 0.2-0.4 parts chelating agent.

2. The environmentally friendly water-based ink solvent with high drying efficiency according to claim 1, characterized in that: The bio-based alcohol compound is obtained by mixing bio-based ethanol and bio-based isopropanol in a weight ratio of 4-6:

3.

3. The environmentally friendly water-based ink solvent with high drying efficiency according to claim 1, characterized in that: The weight ratio of n-propyl acetate to tripropylene glycol n-butyl ether is (8-12):

1.

4. The environmentally friendly water-based ink solvent with high drying efficiency according to claim 1, characterized in that: The nanocellulose is carboxylated nanocellulose with a diameter of 20-50 nm and an aspect ratio of >50.

5. The environmentally friendly water-based ink solvent with high drying efficiency according to claim 1, characterized in that: The pH adjuster is 2-amino-2-methyl-1-propanol.

6. The environmentally friendly water-based ink solvent with high drying efficiency according to claim 1, characterized in that: The chelating agent is disodium ethylenediaminetetraacetate.

7. The environmentally friendly water-based ink solvent with high drying efficiency according to claim 1, characterized in that: The raw materials also include 0.1-0.5 parts of acetylenic diol surfactant.

8. A method for preparing the environmentally friendly water-based ink solvent with high drying efficiency as described in any one of claims 1-6, characterized in that, Includes the following steps: Bio-based alcohol compounds, n-propyl acetate, calcium chloride, and chelating agents are mixed and heated to 35-45℃ and stirred until a transparent solution is formed, resulting in a mixed solvent. Water is added and dispersed at 2000-3000 rpm for 5-10 minutes. Then, a pH adjuster, tripropylene glycol n-butyl ether, and nanocellulose are added sequentially and mixed and stirred to obtain an environmentally friendly water-based ink solvent with high drying efficiency.

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