Biomass safe and environment-friendly printing ink and preparation method thereof

Abstract

The invention discloses biomass safe and environment-friendly printing ink and a preparation method thereof, and belongs to the field of printing ink materials. The biomass safe and environment-friendly printing ink is prepared from the following components in parts by weight: 20 to 30 parts of plant oil-based epoxy acrylate, 20 to 30 parts of acrylate maleate modified rosin, 3 to 5 parts of pigment, 10 to 15 parts of filler, 10 to 15 parts of solvent, 1 to 5 parts of flame retardant, 0.1 to 0.5 part of heat stabilizer and 1 to 3 parts of additive. The biomass safe and environment-friendly printing ink matrix resin provided by the invention is green and environment-friendly in source, and high in stability and safety.

Description

Technical Field

[0001] The present invention relates to the field of ink materials, and in particular to a biomass safe and environmentally friendly ink and a preparation method thereof. Background Art

[0002] Traditional ink manufacturing uses industrial petroleum resin as raw material, which not only consumes a large amount of organic solvents, but also pollutes the environment. In order to overcome these shortcomings, people began to study inks with relatively small resin molecular weights and tried to adopt biomass environmental protection technology. Biomass as raw material resources are abundant, widely distributed, and have great development potential. The overall ink formula is healthier and more environmentally friendly. However, problems such as excessive pigments or fillers, too high acid value of the ink system, ink absorption of moisture, mismatch of solvent ratio and volatility, and high ink viscosity can cause the ink to gel and swell, which is easy to swell during storage, transportation, and construction, and is flammable, causing safety hazards. Therefore, the current green and environmentally friendly ink materials are not stable and safe. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention proposes a biomass safe and environmentally friendly ink and a preparation method thereof, aiming to solve the problem of poor stability and safety of current green environmentally friendly ink materials.

[0004] To achieve the above-mentioned purpose, the present invention provides a biomass safe and environmentally friendly ink, which comprises, by weight: 20 to 30 parts of vegetable oil-based epoxy acrylate, 20 to 30 parts of acrylate maleate-modified rosin, 3 to 5 parts of pigment, 10 to 15 parts of filler, 10 to 15 parts of solvent, 1 to 5 parts of flame retardant, 0.1 to 0.5 parts of heat stabilizer, and 1 to 3 parts of additives.

[0005] Optionally, the plant oil-based epoxy acrylate is derived from at least one of epoxy soybean oil, epoxy rubber seed oil, epoxy linseed oil, epoxy rapeseed oil, epoxy tung oil, epoxy palm oil, epoxy balsam pear oil, epoxy sunflower seed oil, epoxy cottonseed oil, epoxy oleic acid methyl ester, epoxy linoleic acid methyl ester and epoxy linolenic acid methyl ester.

[0006] Optionally, the heat stabilizer includes 168 and A mixture of 1010.

[0007] Optionally, the flame retardant includes organic silicon flame retardant F910 and / or organic silicon flame retardant F920.

[0008] Optionally, the filler includes talcum powder and calcium powder, and the mass ratio of the talcum powder to the calcium powder is (1-3):1.

[0009] Optionally, the solvent comprises one of an alcohol, a thiol, a ketone, a phosphate, a carbonate, a sulfite or a hydroxy ester.

[0010] In order to achieve the above object, the present invention also proposes a method for preparing a biomass safe and environmentally friendly ink, comprising the following steps:

[0011] S1: Under a nitrogen atmosphere, rosin, hydroxyethyl acrylate and maleic anhydride are used to prepare acrylate maleate modified rosin;

[0012] S2: Mix the vegetable oil-based epoxy acrylate, flame retardant, heat stabilizer, pigment and filler in proportion, then add acrylate maleate modified rosin and solvent, stir evenly in a stirring tank, grind and filter on a three-roll grinder to obtain biomass safe and environmentally friendly ink.

[0013] Optionally, the filtration fineness is 300-500 mesh.

[0014] Optionally, in the three-roll mill, the speed ratio of the front roll, the middle roll and the rear roll is (7-9):3:1.

[0015] Optionally, the temperature of the stirring tank is 80° C. to 90° C., and the stirring time is 2 h to 4 h.

[0016] Beneficial effects of the present invention: The biomass safe and environmentally friendly ink technical solution of the present invention optimizes environmental protection performance and printing performance through the designed component ratio, wherein the combination of vegetable oil-based epoxy acrylate and modified rosin not only enhances the hardness and heat resistance of the ink, but also maintains the utilization of renewable resources, the appropriate amount of pigments and fillers provide good color performance and physical properties, the selection of environmentally friendly materials reduces the impact on the environment, the cross-linking of the two resins and the addition of flame retardants and heat stabilizers improve the safety and stability during storage, transportation and construction. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. It should be understood that the following embodiments are only used to explain the present invention and are not used to limit the present invention.

[0018] Unless otherwise specified, all technical and scientific terms used herein have the common meanings in the art to which the claimed subject matter belongs, and all reagents used are industrial or analytically pure.

[0019] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0020] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0021] Traditional ink manufacturing uses industrial petroleum resin as raw material, which not only consumes a large amount of organic solvents, but also pollutes the environment. In order to overcome these shortcomings, people began to study inks with relatively small resin molecular weights and tried to adopt biomass environmental protection technology. Biomass as raw material resources are abundant, widely distributed, and have great development potential. The overall ink formula is healthier and more environmentally friendly. However, problems such as excessive pigments or fillers, too high acid value of the ink system, ink absorption of moisture, mismatch of solvent ratio and volatility, and high ink viscosity can cause the ink to gel and swell, which is easy to swell during storage, transportation, and construction, and is flammable, causing safety hazards. Therefore, the current green and environmentally friendly ink materials are not stable and safe.

[0022] To solve the above problems, the present invention proposes a biomass safe and environmentally friendly ink, which includes, by weight: 20 to 30 parts of vegetable oil-based epoxy acrylate, 20 to 30 parts of acrylate maleate-modified rosin, 3 to 5 parts of pigment, 10 to 15 parts of filler, 10 to 15 parts of solvent, 1 to 5 parts of flame retardant, 0.1 to 0.5 parts of heat stabilizer, and 1 to 3 parts of additives.

[0023] This solution uses a mixture of plant oil-based epoxy acrylate and acrylate maleate modified rosin to form a high-functionality resin system, which not only enhances the crosslinking density of the ink and the physical properties after curing, but also maintains the flexibility and adhesion of the ink, ensuring the durability and stability of the ink. In addition, the flame retardant entering the above crosslinking network effectively improves the flame retardant properties of the ink, which is especially suitable for printed products that need to meet strict fire safety standards, such as children's toys, educational materials, etc. At the same time, the addition of heat stabilizers increases the flash point of the ink, ensures the stability of the ink during storage and high temperature environments, prevents early deterioration or performance degradation of the ink, and avoids some safety accidents caused by can expansion.

[0024] In some embodiments, the ink of this scheme is suitable for printing on plastic materials such as polyvinyl chloride (PVC), polyethylene (PE), and polypropylene (PP). PE is suitable for one-time injection molding products and hollow children's toys; PP materials are used to make containers, such as lunch boxes and fresh-keeping boxes, and are also suitable for children's toys such as plastic milk bottles and teethers. Acrylate maleate-modified rosin is beneficial for adjusting the polarity of the ink. In other embodiments, a small amount of chlorinated polypropylene resin and polyurethane resin mixture specially used for promoting the adhesion of PP and PE can be added into the ink system to achieve better adhesion of the ink on the above-mentioned substrates.

[0025] In some embodiments, the additive includes at least one of a leveling agent, a defoaming agent, and an adhesion promoter. Leveling agents and defoaming agents are commonly used in the industry, and adhesion promoters include titanate coupling agents and silane coupling agents, which can improve the compatibility between inorganic fillers and organic resins, and help improve the mechanical properties and adhesion of inks.

[0026] Furthermore, the plant oil-based epoxy acrylate is derived from at least one of epoxy soybean oil, epoxy rubber seed oil, epoxy linseed oil, epoxy rapeseed oil, epoxy tung oil, epoxy palm oil, epoxy balsam pear fruit oil, epoxy sunflower seed oil, epoxy cotton seed oil, epoxy oleic acid methyl ester, epoxy linoleic acid methyl ester, and epoxy linolenic acid methyl ester.

[0027] In this scheme, vegetable oils are derived from naturally grown plants and are a renewable resource. Using them as raw materials for inks helps reduce dependence on fossil fuels. Vegetable oil-based epoxy acrylates have good biodegradability, which means that using this ink can reduce environmental pollution and meet the current high requirements for environmental protection.

[0028] In addition, since vegetable oil-based epoxy acrylate contains more functional groups in its molecular structure, it can increase the cross-linking density of the coating after curing, thereby enhancing the hardness, heat resistance and chemical resistance of the coating; compared with traditional acrylic compounds, vegetable oil-based epoxy acrylate produces almost no volatile products during the synthesis process, thereby reducing irritation to the human body and the environment.

[0029] Furthermore, the thermal stabilizer comprises 168 and A mixture of 1010.

[0030] This solution provides excellent long-term thermal stability to prevent thermal oxidation degradation of the ink, and the thermal stabilizer maintains the original melt fluidity and color during processing, reduces pigment formation, and avoids affecting the color of the ink. 168 is a low volatility organic phosphate ester that is particularly resistant to hydrolysis and can protect organic polymers that are susceptible to oxidation during processing. 1010 is a hindered phenolic antioxidant that works synergistically with polymers during processing to provide long-term thermal stability and prevent thermo-oxidative degradation during service life.

[0031] In some embodiments, 168 and The mass ratio of 1010 is 1:1.

[0032] Furthermore, the flame retardant includes silicone flame retardant F910 and / or silicone flame retardant F920. Silicone flame retardant F910 has good thermal stability and low volatility, does not react chemically with other chemicals, pigments or additives, and can improve the processing performance of the material. During combustion, the silicone flame retardant synergist is enriched on the surface of the material to form a dense silica barrier layer, which effectively blocks oxygen and flammable small molecule gases and has a flame retardant effect. Silicone flame retardant F920 has excellent charring and flame retardancy, and can form a protective carbon layer during the combustion process to isolate oxygen and heat, thereby achieving the purpose of flame retardancy.

[0033] Furthermore, the filler includes talcum powder and calcium powder, and the mass ratio of the talcum powder to the calcium powder is (1-3):1.

[0034] Talc has a layered structure that can improve the fluidity and stability of ink, increase the smoothness and gloss of the coating, and also improve the heat resistance and dimensional stability of the ink. Talc has stable chemical properties and is suitable for use under different pH conditions. It also has a low friction coefficient, which helps extend the service life of printing equipment. Calcium powder (calcium carbonate) has high whiteness and moderate hardness, which can help reduce smoke produced during combustion.

[0035] In the ink of this scheme, the mass ratio of talcum powder to calcium powder is (1-3):1. This ratio can produce a synergistic effect, that is, the flaky structure of talcum powder and the spherical structure of calcium carbonate work together to optimize the dispersibility of the filler in the ink and improve the mechanical and optical properties of the ink. In addition, this ratio can also improve the printability of the ink, such as reducing printing pressure and improving the gloss and wear resistance of the printed product. Preferably, the mass ratio of talcum powder to calcium powder is 1.5:1.

[0036] Further, the solvent comprises one of alcohol, thiol, ketone, phosphate, carbonate, sulfite or hydroxy acid ester. Preferably, the solvent is one of phosphate, sulfite or hydroxy acid ester.

[0037] In order to solve the above problems, the present invention also proposes a method for preparing a biomass safe and environmentally friendly ink, comprising the following steps:

[0038] S1: Under a nitrogen atmosphere, rosin, hydroxyethyl acrylate and maleic anhydride are used to prepare acrylate maleate modified rosin;

[0039] In some embodiments, rosin, hydroxyethyl acrylate and a polymerization inhibitor are added to a reaction kettle, heated at 120° C. until the rosin is melted, and then the temperature is raised to 180-230° C. and reacted for 3-5 hours to obtain acrylate-modified rosin; after the temperature drops to 90° C.-120° C., maleic anhydride is added to the reaction kettle and the reaction is continued for 4-6 hours to obtain acrylate-maleate-modified rosin;

[0040] S2: Mix the vegetable oil-based epoxy acrylate, flame retardant, heat stabilizer, pigment and filler in proportion, then add acrylate maleate modified rosin and solvent, stir evenly in a stirring tank, grind and filter on a three-roll grinder to obtain biomass safe and environmentally friendly ink.

[0041] Furthermore, the filtration fineness is 300-500 meshes. Filtering is performed through a filter screen to remove possible agglomerates or undispersed pigment particles.

[0042] Furthermore, in the three-roll mill, the speed ratio of the front roller, the middle roller, and the rear roller is (7-9):3:1. The mixed ink material is transferred to the three-roll mill for fine grinding. By adjusting the roller distance and speed of the three-roll mill, sufficient shear force is ensured so that the pigment and filler can reach the required fineness and dispersibility in the ink. In some embodiments, the speed ratio of the front roller, the middle roller, and the rear roller is preferably 8:3:1.

[0043] Furthermore, the temperature of the stirring tank is 80° C. to 90° C., and the stirring time is 2 h to 4 h.

[0044] The technical solution of the present invention is further described in detail below in conjunction with specific embodiments.

[0045] Embodiment 1:

[0046] S1: adding rosin, hydroxyethyl acrylate and a polymerization inhibitor into a reaction kettle, heating at 120°C until the rosin melts, raising the temperature to 200°C, and reacting for 4 hours to obtain acrylate-modified rosin; after the temperature drops to 90°C, adding maleic anhydride into the reaction kettle, and continuing the reaction for 5 hours to obtain acrylate-maleate-modified rosin;

[0047] S2: By weight, 25 parts of soybean oil-based epoxy acrylate, 2 parts of silicone flame retardant F910, 0.3 parts of 168 and A 1:1 mixture of 1010, 3 parts of pigment, 6 parts of talc and 2 parts of calcium powder are mixed evenly, and then 25 parts of acrylate maleate modified rosin, 12 parts of isobutyl alcohol and 2 parts of phosphate are added. After stirring at 80 ° C in a stirring kettle for 3 hours, it is ground on a three-roll mill with a speed ratio of the front roller, the middle roller and the rear roller being 8:3:1. After grinding, it is filtered at a fineness of 300 mesh to obtain a biomass safe and environmentally friendly ink.

[0048] Embodiment 2:

[0049] S1: adding rosin, hydroxyethyl acrylate and a polymerization inhibitor into a reaction kettle, heating at 120°C until the rosin melts, raising the temperature to 200°C, and reacting for 4 hours to obtain acrylate-modified rosin; after the temperature drops to 90°C, adding maleic anhydride into the reaction kettle, and continuing the reaction for 5 hours to obtain acrylate-maleate-modified rosin;

[0050] S2: By weight, 30 parts of palm oil-based epoxy acrylate, 2 parts of silicone flame retardant F910, 0.3 parts of 168 and A 1:1 mixture of 1010, 3 parts of pigment, 6 parts of talcum powder and 2 parts of calcium powder are mixed evenly, and then 20 parts of acrylate maleate modified rosin, 12 parts of isobutyl alcohol and 2 parts of phosphate are added. After stirring at 80 ° C in a stirring kettle for 3 hours, it is ground on a three-roll mill with a speed ratio of the front roller, the middle roller and the rear roller being 8:3:1. After grinding, it is filtered at a fineness of 300 mesh to obtain a biomass safe and environmentally friendly ink.

[0051] Embodiment 3:

[0052] S1: adding rosin, hydroxyethyl acrylate and a polymerization inhibitor into a reaction kettle, heating at 120°C until the rosin melts, raising the temperature to 220°C, and reacting for 4 hours to obtain acrylate-modified rosin; after the temperature drops to 100°C, adding maleic anhydride into the reaction kettle, and continuing the reaction for 5 hours to obtain acrylate-maleate-modified rosin;

[0053] S2: By weight, 20 parts of soybean oil-based epoxy acrylate, 2 parts of silicone flame retardant F910, 0.2 parts of 168 and A 1:1 mixture of 1010, 3 parts of pigment, 6 parts of talc and 2 parts of calcium powder are mixed evenly, and then 30 parts of acrylate maleate modified rosin, 12 parts of isobutyl alcohol and 2 parts of phosphate are added. After stirring at 80 ° C in a stirring kettle for 3 hours, it is ground on a three-roll mill with a speed ratio of the front roller, the middle roller and the rear roller being 8:3:1. After grinding, it is filtered at a fineness of 300 mesh to obtain a biomass safe and environmentally friendly ink.

[0054] Embodiment 4:

[0055] S1: adding rosin, hydroxyethyl acrylate and a polymerization inhibitor into a reaction kettle, heating at 120°C until the rosin melts, raising the temperature to 220°C, and reacting for 4 hours to obtain acrylate-modified rosin; after the temperature drops to 100°C, adding maleic anhydride into the reaction kettle, and continuing the reaction for 5 hours to obtain acrylate-maleate-modified rosin;

[0056] S2: By weight, 30 parts of linseed oil-based epoxy acrylate, 5 parts of silicone flame retardant F910, 0.5 parts of 168 and A 1:1 mixture of 1010, 3 parts of pigment, 6 parts of talcum powder and 2 parts of calcium powder are mixed evenly, and then 30 parts of acrylate maleate modified rosin, 12 parts of isobutyl alcohol and 2 parts of phosphate are added. After stirring at 80 ° C in a stirring kettle for 3 hours, it is ground on a three-roll mill with a speed ratio of the front roller, the middle roller and the rear roller being 9:3:1. After grinding, it is filtered at a fineness of 300 mesh to obtain a biomass safe and environmentally friendly ink.

[0057] Embodiment 5:

[0058] S1: adding rosin, hydroxyethyl acrylate and a polymerization inhibitor into a reaction kettle, heating at 120°C until the rosin melts, raising the temperature to 220°C, and reacting for 4 hours to obtain acrylate-modified rosin; after the temperature drops to 100°C, adding maleic anhydride into the reaction kettle, and continuing the reaction for 5 hours to obtain acrylate-maleate-modified rosin;

[0059] S2: By weight, 20 parts of linseed oil-based epoxy acrylate, 5 parts of silicone flame retardant F910, 0.5 parts of 168 and A 1:1 mixture of 1010, 3 parts of pigment, 6 parts of talcum powder and 2 parts of calcium powder are mixed evenly, and then 20 parts of acrylate maleate modified rosin, 12 parts of isobutyl alcohol and 2 parts of phosphate are added. After stirring at 80 ° C in a stirring kettle for 3 hours, it is ground on a three-roll mill with a speed ratio of the front roller, the middle roller and the rear roller being 8:3:1. After grinding, it is filtered at a fineness of 300 mesh to obtain a biomass safe and environmentally friendly ink.

[0060] Embodiment 6:

[0061] S1: adding rosin, hydroxyethyl acrylate and a polymerization inhibitor into a reaction kettle, heating at 120°C until the rosin melts, raising the temperature to 220°C, and reacting for 4 hours to obtain acrylate-modified rosin; after the temperature drops to 100°C, adding maleic anhydride into the reaction kettle, and continuing the reaction for 5 hours to obtain acrylate-maleate-modified rosin;

[0062] S2: By weight, 25 parts of rapeseed oil-based epoxy acrylate, 5 parts of silicone flame retardant F920, 0.5 parts of 168 and A 1:1 mixture of 1010, 3 parts of pigment, 6 parts of talc and 2 parts of calcium powder are mixed evenly, and then 25 parts of acrylate maleate modified rosin, 12 parts of isobutyl alcohol and 2 parts of phosphate are added. After stirring at 80 ° C in a stirring kettle for 3 hours, it is ground on a three-roll mill with a speed ratio of the front roller, the middle roller and the rear roller being 8:3:1. After grinding, it is filtered at a fineness of 300 mesh to obtain a biomass safe and environmentally friendly ink.

[0063] Comparative Example 1:

[0064] The same as Example 1, except that: based on weight, only 50 parts of soybean oil-based epoxy acrylate is used, and no acrylate maleate-modified rosin is added for crosslinking.

[0065] Further, ink performance tests were performed on Examples 1-4 and Comparative Example 1, including stability, flash point, and oxygen index determination. The specific test contents included (items that need to be tested after printing are tested after screen printing on a plastic substrate according to the standard of GB / T13217.7-2023):

[0066] 1. Stability test: The samples were stored at 40°C for 7 days. The parameter used to evaluate stability was the observation of the sedimentation of the ink particles. A qualitative judgment was made on the sedimentation of the biomass safe and environmentally friendly ink samples. The sedimentation of the strong durable ink samples was rated on a scale from 1 to 5, where 1 indicated complete sedimentation and 5 indicated no sedimentation;

[0067] 2. Flash point test: The flash point of ink, commonly known as the flash point, is an important indicator to measure the safety of materials during storage, transportation and use. It refers to the lowest temperature at which the test flame causes the sample vapor to ignite and the flame to spread to the surface of the liquid under specified conditions. The flash point is determined according to GB / T261-2008 "Determination of Flash Point-Pensky-Martin Closed Cup Method". First, place the sample in the flash point tester, and then gradually heat the sample while controlling the heating rate. When the sample temperature reaches a certain temperature before the expected flash point, start scanning ignition. The igniter moves above the sample and repeats the ignition test every time the sample temperature rises by a certain amount. When the mixture formed by the sample vapor and air encounters an ignition source and flashes instantly, the temperature at this time is recorded as the flash point;

[0068] 3. Oxygen index (OI) determination: The oxygen index is a measure of the minimum oxygen concentration required for a material to maintain combustion. It is an important flame retardant performance parameter. The oxygen index of the sample can be determined by changing the mixing ratio of oxygen and nitrogen and igniting the sample. The test is carried out in accordance with GB / T5454 standard.

[0069] The test results are summarized in the following table:

[0070]

[0071] In the above data, the ink samples in all embodiments obtained the highest stability rating (level 5), indicating that no particle sedimentation occurred during the observation period, indicating that the ink has good physical stability. The flash point of Example 4 is the highest, which is 259°C, while the flash point of Comparative Example 1 is the lowest, which is 210°C; the higher the flash point, the better the safety of the material during storage, transportation and use. In the oxygen index (OI) determination, the oxygen index of Example 4 is the highest, reaching 29.8%, while the oxygen index of Comparative Example 1 is the lowest, which is 22.1%. The higher the oxygen index, the more difficult the material is to burn and the better the flame retardant performance. From these data, it can be seen that the ink samples (Examples 1-4) to which acrylate maleate-modified rosin and soybean oil-based epoxy acrylate form a cross-linked resin are added. The performance of the ink sample (Comparative Example 1) without adding this component in terms of stability, flash point and oxygen index is better. In particular, Example 4 not only achieved the highest rating in stability, but also performed well in flash point and oxygen index, showing good safety performance and flame retardant performance.

[0072] In summary, the technical solution of biomass safe and environmentally friendly ink obtained in the embodiment achieves the optimization of environmental protection performance and printing performance through the designed component ratio. The combination of vegetable oil-based epoxy acrylate and modified rosin not only enhances the hardness and heat resistance of the ink, but also maintains the utilization of renewable resources. The appropriate amount of pigments and fillers provides good color performance and physical properties. The selection of environmentally friendly materials reduces the impact on the environment. The cross-linking of the two resins and the addition of flame retardants and heat stabilizers improve the safety and stability during storage, transportation and construction.

[0073] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the patent protection scope of the present invention.

Claims

1. A biomass safe and environmentally friendly ink, characterized in that: In parts by weight, it includes: 20 to 30 parts of vegetable oil-based epoxy acrylate, 20 to 30 parts of acrylate maleate modified rosin, 3 to 5 parts of pigment, 10 to 15 parts of filler, 10 to 15 parts of solvent, 1 to 5 parts of flame retardant, 0.1 to 0.5 parts of heat stabilizer, 1 to 3 parts of auxiliary agent.

2. The biomass safe and environmentally friendly ink according to claim 1, characterized in that: The plant oil-based epoxy acrylate is derived from at least one of epoxy soybean oil, epoxy rubber seed oil, epoxy linseed oil, epoxy rapeseed oil, epoxy tung oil, epoxy palm oil, epoxy balsamic oil, epoxy sunflower seed oil, epoxy cotton seed oil, epoxy oleic acid methyl ester, epoxy linoleic acid methyl ester and epoxy linolenic acid methyl ester.

3. The biomass safe and environmentally friendly ink according to claim 1, characterized in that: The heat stabilizer includes 168 and A mixture of 1010.

4. The biomass safe and environmentally friendly ink according to claim 1, characterized in that: The flame retardant includes organic silicon flame retardant F910 and / or organic silicon flame retardant F920.

5. The biomass safe and environmentally friendly ink according to claim 1, characterized in that: The filler includes talcum powder and calcium powder, and the mass ratio of the talcum powder to the calcium powder is (1-3):

1.

6. The biomass safe and environmentally friendly ink according to claim 1, characterized in that: The solvent includes one of an alcohol, a thiol, a ketone, a phosphate ester, a carbonate ester, a sulfite ester or a hydroxy ester.

7. A method for preparing a biomass safe and environmentally friendly ink according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1: Under a nitrogen atmosphere, rosin, hydroxyethyl acrylate and maleic anhydride are used to prepare acrylate maleate modified rosin; S2: Mix the vegetable oil-based epoxy acrylate, flame retardant, heat stabilizer, pigment and filler in proportion, then add acrylate maleate modified rosin and solvent, stir evenly in a stirring tank, grind and filter on a three-roll grinder to obtain biomass safe and environmentally friendly ink.

8. The method for preparing the biomass safe and environmentally friendly ink according to claim 7, characterized in that: The filtration fineness is 300-500 meshes.

9. The method for preparing the biomass safe and environmentally friendly ink according to claim 7, characterized in that: In the three-roll mill, the speed ratio of the front roll, the middle roll and the rear roll is (7-9):3:

1.

10. The method for preparing the biomass safe and environmentally friendly ink according to claim 7, characterized in that: The temperature of the stirring kettle is 80° C. to 90° C., and the stirring time is 2 h to 4 h.

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