High adhesion ink for green printing of notebooks

Abstract

The present invention belongs to the field of ink technology, and more particularly to a kind of notebook green printing high adhesion ink. The present invention, for the ink applied to paper in the prior art, generally has poor adhesion, the problem of easily falling off, provides a kind of notebook green printing high adhesion ink, including 30 40 parts of aqueous polyurethane resin emulsion, 1 3 parts of acrylic emulsion, 5 10 parts of pigment, 0.3 1 parts of adhesion promoter, 5 10 parts of ethanol, 1 2 parts of surfactant and 0.5 0.8 parts of stabilizer by mass fraction. The present invention, by being added with the adhesion promoter consisting of modified diatomite, isopropyl alcohol and deionized water, greatly improves the ability of ink to adhere to paper surface, ensures that it is not easy to fall off.

Description

Technical Field

[0001] The invention belongs to the technical field of inks, and in particular relates to a high-adhesion ink for green printing of notebooks. Background Art

[0002] Ink is a crucial material used in printing, creating designs and text on substrates through printing or inkjet printing. Ink consists of a primary and secondary component, which is uniformly mixed and repeatedly rolled to form a viscous, colloidal fluid. It is composed of a binder (resin), pigment, filler, additive, and solvent. It is used in a variety of printing applications, including books and periodicals, packaging and decoration, architectural decoration, and electronic circuit boards. As social demand increases, the variety and production of inks are expanding and growing accordingly. However, existing inks, particularly those applied to paper, generally suffer from poor adhesion and easy shedding.

[0003] For example, a Chinese invention patent application discloses a highly wear-resistant and high-gloss water-based paper gravure ink [application number: 201810734193.1]. The invention application includes the following components in mass fractions: 20-30 parts of carbon black, 10-20 parts of saturated polyester solid resin, 2-6 parts of pigment, 2-5 parts of linseed oil, 1-2 parts of antioxidant, 2-3 parts of sodium styrene sulfonate, 20-25 parts of water, and 5-10 parts of ethanol.

[0004] This invention application has the advantages of reducing the content of VOCs in the material and improving the wear resistance of the ink by integrating lipids and oils, but it still does not solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of the present invention is to solve the above problems and provide a high-adhesion ink for green printing of notebooks which is not easy to fall off.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A high-adhesion ink for green notebook printing comprises 30-40 parts by mass of an aqueous polyurethane resin emulsion, 1-3 parts by mass of an acrylic emulsion, 5-10 parts by mass of a pigment, 0.3-1 parts by mass of an adhesion promoter, 5-10 parts by mass of ethanol, 1-2 parts by mass of a surfactant, and 0.5-0.8 parts by mass of a stabilizer.

[0008] The high-adhesion ink for green printing of notebooks includes 35 parts by mass of aqueous polyurethane resin emulsion, 2 parts by mass of acrylic emulsion, 8 parts by mass of pigment, 0.6 parts by mass of adhesion promoter, 7 parts by mass of ethanol, 1.5 parts by mass of surfactant and 0.6 parts by mass of stabilizer.

[0009] In the above-mentioned high-adhesion ink for green printing of notebooks, the adhesion promoter includes modified diatomaceous earth, isopropyl alcohol and deionized water.

[0010] In the above-mentioned high-adhesion ink for green printing of notebooks, the mass ratio of the modified diatomaceous earth, isopropyl alcohol and deionized water is 1:2.3:10.

[0011] In the above-mentioned high-adhesion ink for green printing of notebooks, the particle size of the modified diatomaceous earth is less than 400 meshes.

[0012] In the above-mentioned high-adhesion ink for green notebook printing, the modified diatomaceous earth is prepared by the following method:

[0013] Step 1: Grind diatomaceous earth coarsely, then place the diatomaceous earth in an acidic solution, heat the solution to 40-50°C, and stir for 30-60 minutes to obtain acid-modified diatomaceous earth;

[0014] Step 2: Wash the acid-modified diatomaceous earth with water until it is neutral, and then place it in an oven and dry it at a constant temperature for 3h-5h to obtain dried diatomaceous earth;

[0015] Step 3: Finely grind the dried diatomaceous earth and sieve it through a 400-mesh sieve to obtain modified diatomaceous earth.

[0016] In the above-mentioned high-adhesion ink for green printing of notebooks, the acidic solution in step 1 is a hydrochloric acid solution with a mass concentration of 1-2 mol / L.

[0017] In the above-mentioned high-adhesion ink for green printing of notebooks, the drying temperature of the oven in step 2 is 250-350°C.

[0018] In the above-mentioned high-adhesion ink for green printing of notebooks, the surfactant is sodium styrene sulfonate.

[0019] In the above-mentioned high-adhesion ink for green printing of notebooks, the stabilizer is magnesium stearate.

[0020] Compared with the existing technology, the advantages of the present invention are:

[0021] 1. The present invention greatly improves the ability of ink to adhere to the paper surface by adding an adhesion promoter composed of modified diatomaceous earth, isopropyl alcohol and deionized water, ensuring that it is not easy to fall off.

[0022] 2. The raw materials of the present invention are easily available, the preparation process is simple, and it is suitable for large-scale promotion and use. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below with reference to specific embodiments.

[0024] Example 1

[0025] This embodiment provides a high-adhesion ink for green printing of notebooks, including 30 parts by mass of an aqueous polyurethane resin emulsion, 3 parts by mass of an acrylic emulsion, 10 parts by mass of a pigment, 1 part by mass of an adhesion promoter, 10 parts by mass of ethanol, 2 parts by mass of sodium styrene sulfonate, and 0.8 parts by mass of magnesium stearate.

[0026] The adhesion promoter is prepared by mixing modified diatomaceous earth, isopropyl alcohol and deionized water in a mass ratio of 1:2.3:10.

[0027] Wherein, the modified diatomaceous earth is prepared by the following method:

[0028] Step 1: Grind diatomaceous earth coarsely, then place the diatomaceous earth in a 1 mol / L hydrochloric acid solution, heat to 40°C, and stir for 30 minutes to obtain acid-modified diatomaceous earth;

[0029] Step 2: Wash the acid-modified diatomaceous earth with water until it is neutral, and then place it in an oven and dry it at a constant temperature of 250° C. for 3 hours to obtain dried diatomaceous earth;

[0030] Step 3: Finely grind the dried diatomaceous earth and sieve it through a 400-mesh sieve to obtain modified diatomaceous earth.

[0031] Example 2

[0032] This embodiment provides a high-adhesion ink for green printing of notebooks, including 40 parts by mass of an aqueous polyurethane resin emulsion, 1 part of an acrylic emulsion, 5 parts of a pigment, 0.3 parts of an adhesion promoter, 5 parts of ethanol, 1 part of sodium styrene sulfonate, and 0.5 parts of magnesium stearate.

[0033] The adhesion promoter is prepared by mixing modified diatomaceous earth, isopropyl alcohol and deionized water in a mass ratio of 1:2.3:10.

[0034] Wherein, the modified diatomaceous earth is prepared by the following method:

[0035] Step 1: Grind diatomaceous earth coarsely, then place the diatomaceous earth in a 1 mol / L hydrochloric acid solution, heat to 40°C, and stir for 30 minutes to obtain acid-modified diatomaceous earth;

[0036] Step 2: Wash the acid-modified diatomaceous earth with water until it is neutral, and then place it in an oven and dry it at a constant temperature of 250° C. for 3 hours to obtain dried diatomaceous earth;

[0037] Step 3: Finely grind the dried diatomaceous earth and sieve it through a 400-mesh sieve to obtain modified diatomaceous earth.

[0038] Example 3

[0039] This embodiment provides a high-adhesion ink for green printing of notebooks, including 35 parts by mass of an aqueous polyurethane resin emulsion, 2 parts by mass of an acrylic emulsion, 8 parts by mass of a pigment, 0.6 parts by mass of an adhesion promoter, 7 parts by mass of ethanol, 1.5 parts by mass of sodium styrene sulfonate, and 0.6 parts by mass of magnesium stearate.

[0040] The adhesion promoter is prepared by mixing modified diatomaceous earth, isopropyl alcohol and deionized water in a mass ratio of 1:2.3:10.

[0041] Wherein, the modified diatomaceous earth is prepared by the following method:

[0042] Step 1: Grind diatomaceous earth coarsely, then place the diatomaceous earth in a 1 mol / L hydrochloric acid solution, heat to 40°C, and stir for 30 minutes to obtain acid-modified diatomaceous earth;

[0043] Step 2: Wash the acid-modified diatomaceous earth with water until it is neutral, and then place it in an oven and dry it at a constant temperature of 250° C. for 3 hours to obtain dried diatomaceous earth;

[0044] Step 3: Finely grind the dried diatomaceous earth and sieve it through a 400-mesh sieve to obtain modified diatomaceous earth.

[0045] Example 4

[0046] This embodiment provides a high-adhesion ink for green printing of notebooks, including 35 parts by mass of an aqueous polyurethane resin emulsion, 2 parts by mass of an acrylic emulsion, 8 parts by mass of a pigment, 0.6 parts by mass of an adhesion promoter, 7 parts by mass of ethanol, 1.5 parts by mass of sodium styrene sulfonate, and 0.6 parts by mass of magnesium stearate.

[0047] The adhesion promoter is prepared by mixing modified diatomaceous earth, isopropyl alcohol and deionized water in a mass ratio of 1:2.3:10.

[0048] Wherein, the modified diatomaceous earth is prepared by the following method:

[0049] Step 1: Grind diatomaceous earth coarsely, then place the diatomaceous earth in a 2 mol / L hydrochloric acid solution, heat to 50° C., and stir for 60 minutes to obtain acid-modified diatomaceous earth;

[0050] Step 2: Wash the acid-modified diatomaceous earth with water until it is neutral, and then place it in an oven and dry it at a constant temperature of 350° C. for 5 hours to obtain dried diatomaceous earth;

[0051] Step 3: Finely grind the dried diatomaceous earth and sieve it through a 400-mesh sieve to obtain modified diatomaceous earth.

[0052] Example 5

[0053] This embodiment provides a high-adhesion ink for green printing of notebooks, including 35 parts by mass of an aqueous polyurethane resin emulsion, 2 parts by mass of an acrylic emulsion, 8 parts by mass of a pigment, 0.6 parts by mass of an adhesion promoter, 7 parts by mass of ethanol, 1.5 parts by mass of sodium styrene sulfonate, and 0.6 parts by mass of magnesium stearate.

[0054] The adhesion promoter is prepared by mixing modified diatomaceous earth, isopropyl alcohol and deionized water in a mass ratio of 1:2.3:10.

[0055] Wherein, the modified diatomaceous earth is prepared by the following method:

[0056] Step 1: Grind diatomaceous earth coarsely, then place the diatomaceous earth in a 1.5 mol / L hydrochloric acid solution, heat to 45° C., and stir for 45 minutes to obtain acid-modified diatomaceous earth;

[0057] Step 2: Wash the acid-modified diatomaceous earth with water until it is neutral, and then place it in an oven and dry it at a constant temperature of 300° C. for 4 hours to obtain dried diatomaceous earth;

[0058] Step 3: Finely grind the dried diatomaceous earth and sieve it through a 400-mesh sieve to obtain modified diatomaceous earth.

[0059] Comparative Example 1

[0060] This comparative example provides a high-adhesion ink for green printing of notebooks, comprising 35 parts by mass of an aqueous polyurethane resin emulsion, 2 parts by mass of an acrylic emulsion, 8 parts by mass of a pigment, 0.6 parts by mass of an adhesion promoter, 7 parts by mass of ethanol, 1.5 parts by mass of sodium styrene sulfonate, and 0.6 parts by mass of magnesium stearate.

[0061] The adhesion promoter was deionized water.

[0062] Comparative Example 2

[0063] This comparative example provides a high-adhesion ink for green printing of notebooks, comprising 35 parts by mass of an aqueous polyurethane resin emulsion, 2 parts by mass of an acrylic emulsion, 8 parts by mass of a pigment, 0.6 parts by mass of an adhesion promoter, 7 parts by mass of ethanol, 1.5 parts by mass of sodium styrene sulfonate, and 0.6 parts by mass of magnesium stearate.

[0064] The adhesion promoter is obtained by mixing modified diatomaceous earth and deionized water in a mass ratio of 1:10.

[0065] Wherein, the modified diatomaceous earth is prepared by the following method:

[0066] Step 1: Grind diatomaceous earth coarsely, then place the diatomaceous earth in a 1.5 mol / L hydrochloric acid solution, heat to 45° C., and stir for 45 minutes to obtain acid-modified diatomaceous earth;

[0067] Step 2: Wash the acid-modified diatomaceous earth with water until it is neutral, and then place it in an oven and dry it at a constant temperature of 300° C. for 4 hours to obtain dried diatomaceous earth;

[0068] Step 3: Finely grind the dried diatomaceous earth and sieve it through a 400-mesh sieve to obtain modified diatomaceous earth.

[0069] Comparative Example 3

[0070] This comparative example provides a high-adhesion ink for green printing of notebooks, comprising 35 parts by mass of an aqueous polyurethane resin emulsion, 2 parts by mass of an acrylic emulsion, 8 parts by mass of a pigment, 0.6 parts by mass of an adhesion promoter, 7 parts by mass of ethanol, 1.5 parts by mass of sodium styrene sulfonate, and 0.6 parts by mass of magnesium stearate.

[0071] The adhesion promoter was prepared by mixing isopropyl alcohol and deionized water in a mass ratio of 2.3:10.

[0072] Comparative Example 4

[0073] This comparative example provides a high-adhesion ink for green printing of notebooks, comprising 35 parts by mass of an aqueous polyurethane resin emulsion, 2 parts by mass of an acrylic emulsion, 8 parts by mass of a pigment, 0.6 parts by mass of an adhesion promoter, 7 parts by mass of ethanol, 1.5 parts by mass of sodium styrene sulfonate, and 0.6 parts by mass of magnesium stearate.

[0074] The adhesion promoter is prepared by mixing diatomaceous earth, isopropyl alcohol and deionized water in a mass ratio of 1:2.3:10.

[0075] Comparative Example 5

[0076] This comparative example provides a high-adhesion ink for green printing of notebooks, comprising 35 parts by mass of an aqueous polyurethane resin emulsion, 2 parts by mass of an acrylic emulsion, 8 parts by mass of a pigment, 0.6 parts by mass of an adhesion promoter, 7 parts by mass of ethanol, 1.5 parts by mass of sodium styrene sulfonate, and 0.6 parts by mass of magnesium stearate.

[0077] The adhesion promoter is prepared by mixing modified diatomaceous earth, n-propanol and deionized water in a mass ratio of 1:2.3:10.

[0078] Wherein, the modified diatomaceous earth is prepared by the following method:

[0079] Step 1: Grind diatomaceous earth coarsely, then place the diatomaceous earth in a 1.5 mol / L hydrochloric acid solution, heat to 45° C., and stir for 45 minutes to obtain acid-modified diatomaceous earth;

[0080] Step 2: Wash the acid-modified diatomaceous earth with water until it is neutral, and then place it in an oven and dry it at a constant temperature of 300° C. for 4 hours to obtain dried diatomaceous earth;

[0081] Step 3: Finely grind the dried diatomaceous earth and sieve it through a 400-mesh sieve to obtain modified diatomaceous earth.

[0082] Application Example 1

[0083] Ink 1 was prepared using the components described in Example 5;

[0084] Ink 2 was prepared using the components described in Comparative Example 1;

[0085] Ink 3 was prepared using the components described in Comparative Example 2;

[0086] Ink 4 was prepared using the components described in Comparative Example 3;

[0087] Ink 5 was prepared using the components described in Comparative Example 4;

[0088] Ink 6 was prepared using the components described in Comparative Example 5;

[0089] A sheet of white paper was divided into six equal sections. Each section was then coated with ink 1-6 at equal thicknesses, yielding test papers 1-6. The ink adhesion of test papers 1-6 was measured using the ASTM D3359-09 standard test method for adhesion measurement using the tape method. The grid spacing was 1 mm x 1 mm, and 3M600 tape was used.

[0090] Adhesion test evaluation criteria are:

[0091] ASTM Grade 5B: The cut edges are completely smooth and there is no peeling on the lattice edges.

[0092] ASTM Grade 4B: Small flakes peel off at the intersection of the cuts, and the actual damage in the cross-cut area does not exceed 5%.

[0093] ASTM Grade 3B: There is peeling at the edges and intersections of the cut, with an area of ​​5%-15%.

[0094] ASTM Grade 2B: The edges of the cuts peel off, large pieces peel off, and even some grids peel off, with the peeled area being 15%-35%.

[0095] ASTM Grade 1B: Large pieces of the cut edge peel off, some grids peel off completely, and the peeled area is 35%-65%.

[0096] ASTM Grade 0B: Exceeds the previous grade.

[0097] The results are shown in the following table:

[0098]

[0099]

[0100] Result analysis: By comparing test papers 1-6, it can be seen that the adhesion of test paper 1 is far superior to that of the other test papers, thus achieving the intended purpose of the present invention.

[0101] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

Claims

1. A high-adhesion ink for green printing of notebooks, characterized by: The composition comprises 30-40 parts by weight of waterborne polyurethane resin emulsion, 1-3 parts by weight of acrylic emulsion, 5-10 parts by weight of pigment, 0.3-1 parts by weight of adhesion promoter, 5-10 parts by weight of ethanol, 1-2 parts by weight of surfactant and 0.5-0.8 parts by weight of stabilizer. The adhesion promoter includes modified diatomaceous earth, isopropyl alcohol and deionized water, The modified diatomaceous earth is prepared by the following method: Step 1: Grind diatomaceous earth coarsely, then place the diatomaceous earth in an acidic solution, heat the solution to 40-50°C, and stir for 30-60 minutes to obtain acid-modified diatomaceous earth; Step 2: Wash the acid-modified diatomaceous earth with water until it is neutral, and then place it in an oven and dry it at a constant temperature for 3h-5h to obtain dried diatomaceous earth; Step 3: Grind the dried diatomaceous earth and sieve it through a 400-mesh sieve to obtain modified diatomaceous earth. The mass ratio of the modified diatomaceous earth, isopropyl alcohol and deionized water is 1:2.3:

10.

2. The high-adhesion ink for green notebook printing according to claim 1, characterized in that: The invention comprises 35 parts by weight of waterborne polyurethane resin emulsion, 2 parts by weight of acrylic emulsion, 8 parts by weight of pigment, 0.6 parts by weight of adhesion promoter, 7 parts by weight of ethanol, 1.5 parts by weight of surfactant and 0.6 parts by weight of stabilizer.

3. The high-adhesion ink for green notebook printing according to claim 1, characterized in that: The particle size of the modified diatomaceous earth is less than 400 meshes.

4. The high-adhesion ink for green notebook printing according to claim 1, characterized in that: The acidic solution in step 1 is a hydrochloric acid solution with a mass concentration of 1-2 mol / L.

5. The high-adhesion ink for green notebook printing according to claim 1, characterized in that: The drying temperature of the oven in the step 2 is 250-350°C.

6. The high-adhesion ink for green notebook printing according to claim 1, characterized in that: The surfactant is sodium styrene sulfonate.

7. The high-adhesion ink for green notebook printing according to claim 1, characterized in that: The stabilizer is magnesium stearate.

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