Preparation method of fadable ink ingot
By preparing faded ink ingots and using fluorescent dyes and other raw materials, the problem of sewage and difficulty in cleaning in calligraphy practice is solved, and the effect of rapid fading and bright colors of the ink when it encounters water is achieved.
Patent Information
- Application Number
- CN202411810985.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-02-14
AI Technical Summary
Traditional ink can easily lead to black sewage after washing the brush during calligraphy practice, and the ink marks are difficult to remove from clothes and paper.
By preparing a faded ink ingot, using raw materials such as fluorescent dyes and color developers, combined with gum acacia and surfactant, an ink that can fade when exposed to water is formed.
It realizes that the ink can fade quickly when it encounters a lot of water, solves the problem of difficult cleaning of ink traces, and ensures that the ink is bright in color and convenient to use.
Smart Images
Figure BDA0005180536720000031 
Figure BDA0005180536720000041
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of ink sticks, and in particular to a method for preparing a decolorizable ink stick. Background Art
[0002] Ink stick is one of the four treasures of the study. Ink is made by grinding ink. It is a necessity for people's cultural life in all dynasties. It is the black pigment for writing and painting. It has promoted the development of my country's cultural undertakings and won high praise internationally. Therefore, ink has become one of the symbols of Chinese civilization.
[0003] Calligraphy is an important part of China's excellent traditional culture and an important carrier for the inheritance of excellent traditional culture. Calligraphy education is an important measure to promote China's excellent traditional culture, carry out aesthetic education and enhance national pride. The Ministry of Education has formulated and issued many outline documents and guiding opinions on calligraphy education, vigorously promoted calligraphy into the classroom, and made important progress in the popularization of calligraphy education, the status of calligraphy as a discipline, and the calligraphy education system.
[0004] Due to the characteristics of traditional ink, there are some shortcomings in calligraphy practice. The main manifestations are: first, a lot of black sewage will be produced when washing the brush after use. Second, it is difficult to clean the stains on other surfaces stained by ink. Summary of the invention
[0005] The invention aims to provide an ink stick that can fade when exposed to a large amount of water.
[0006] To achieve the above object, the present invention is implemented through the following technical solutions:
[0007] A method for preparing a decolorizable ink stick comprises the following steps:
[0008] Step 1: Preparation of yellow fluorane colorant: taking yellow fluorane dye 3,6-dimethoxyfluorane and a color developer in a mass ratio of 3:1 to 4:1, mixing them evenly and stirring until color is developed to obtain a yellow fluorane colorant;
[0009] Step 2: Preparation of cyan fluorane colorant: taking cyan fluorane dye and color developer in a mass ratio of 4.5:1 to 5.5:1, mixing them evenly and stirring until color is developed to obtain cyan fluorane colorant;
[0010] Step 3: Preparation of red fluorane colorant: taking a red fluorane dye and a color developer in a mass ratio of 4:1 to 5:1, mixing them evenly and stirring until color is developed to obtain a red fluorane colorant;
[0011] Step 4: Mechanically mix the yellow fluorane colorant, the cyan fluorane colorant and the red fluorane colorant in a mass ratio of 0.8-0.9:0.9-1.1:0.7-0.8 to obtain a mixed black colorant;
[0012] Step 5: first take 8-10% of the colorant weight of gum arabic and 5-8% of the animal bone glue mixture, then add distilled water to boil the glue solution, cool to 50°C, then add the mixed black colorant obtained in step 4 and 10-12% of the surfactant in turn to increase the dispersion of the colorant, and at the same time add 1% of the colorant weight of the preservative and 1.5-2% of the colorant weight of the spices, and hammer repeatedly to make the various raw materials dispersed evenly, indicating that the blank is ready;
[0013] Step 6: Take the blank obtained in step 5 and rub it into ink fruit according to standard specifications, and place the ink fruit in an ink block mold, press it into the ink mold to form it, and lay it flat to dry; in the early stage of laying it flat to dry, turn the ink block over every 3 hours to restore the flatness of the ink body that has naturally arched during drying and shrinking, so as to obtain a fadeable ink block.
[0014] In a further preferred technical solution, the developer is oxalic acid.
[0015] In a further preferred technical solution, the surfactant is sodium dodecylbenzene sulfonate.
[0016] In a further preferred technical solution, the preservative is borneol.
[0017] According to a further preferred technical solution, the fragrance is a mixture of camphor oil and cloves.
[0018] Compared with the prior art, the present invention has the following beneficial effects:
[0019] First, the present invention prepares black ink sticks through the principle of complex color, and the formed black ink is bright in color, comparable to traditional ink. Since the product exists in the form of ink sticks, the product of the present invention can be arbitrarily formulated to meet the different needs of consumers.
[0020] Secondly, the present invention uses fluorane dyes, which are non-toxic and harmless. The ground ink can be faded to colorless when exposed to a large amount of water, thus solving the problems of ink staining clothes and the difficulty in fading the paper for calligraphy practice.
[0021] Third, the invention is green and environmentally friendly, has a high cost-effectiveness, stable performance, is economical, has a fragrant smell, is bright, is mainly used for calligraphy practice, and is easy to erase. DETAILED DESCRIPTION
[0022] Example 1
[0023] The method for preparing a decolorizable ink stick described in this embodiment comprises the following steps:
[0024] (1) Preparation of yellow fluorane colorant: 10 g of 3,6-dimethoxyfluorane was added to 3.5 g of oxalic acid powder, and the mixture was mechanically stirred until a uniform yellow powder was obtained, and then the stirring was stopped to obtain a yellow fluorane colorant;
[0025] (2) Preparation of cyan fluorane colorant: 10 g of 3-diethylamino-6-methyl-7-phenylaminofluorane was added to 2 g of oxalic acid powder, and mechanical stirring was performed until a uniform cyan powder was obtained, and stirring was stopped to obtain a cyan fluorane colorant;
[0026] (3) Preparation of red fluorane colorant: 10 g of 6-(N-ethyl-4-toluidine)-2-methylfluoran was added with 2.5 g of oxalic acid powder, and the mixture was mechanically stirred until a uniform red powder was obtained, and then the stirring was stopped to obtain a red fluorane colorant;
[0027] (4) preparing a mixed black colorant by mechanically mixing 8 g of yellow fluorane colorant, 10 g of cyan fluorane colorant and 7 g of red fluorane colorant. During the mixing process, the color gradually changes from a mixed color to a uniform black. When the black color is stable, stop mechanical stirring to obtain a mixed black colorant;
[0028] (5) Preparation of blank: 2 g of gum arabic, 2 g of bone glue, and 100 mL of distilled water were heated to boiling to form a stable glue solution, cooled to 50° C., 25 g of mixed black colorant, 2.5 g of sodium dodecylbenzene sulfonate, 0.25 g of borneol, 0.25 g of camphor oil, and 0.08 g of clove were added in sequence, mixed, rolled, and hammered until the mixed black colorant was sticky and moist, indicating that the blank was ready;
[0029] (6) Pressing mold. The blank obtained in step 5 is rolled into a seamless ink fruit according to the specifications, pressed into an ink mold, and laid flat to dry. In the early stage of laying flat to dry, the ink stick is turned over every 2 hours to restore the flatness of the ink body that naturally arches during drying and shrinking. In the middle and late stages of drying, it is turned over every 5 hours. The temperature and humidity of the ink drying environment must be strictly controlled, and air must be blown to finally obtain the ink stick.
[0030] The final product of this embodiment, the ink stick, was taken, a small amount of water was added, and ground in an inkstone to obtain writing ink. The physical and chemical indexes of the ink product were tested according to the relevant standards for ink, and the results are shown in Table 1. The skin irritation test of the ink was further tested, and the results showed no skin irritation. In the water fading test, 10 times the volume of water was added, and the ink faded to colorless.
[0031] Table 1: Physical and chemical index test results
[0032]
[0033] Example 2
[0034] The method for preparing a decolorizable ink stick described in this embodiment comprises the following steps:
[0035] (1) Preparation of yellow fluorane colorant: 500 g of 3,6-dimethoxyfluorane was added to 150 g of oxalic acid powder, and the mixture was mechanically stirred until a uniform yellow powder was obtained, and then stirring was stopped to obtain a yellow fluorane colorant;
[0036] (2) Preparation of cyan fluorane colorant: 600 g of 3-diethylamino-6-methyl-7-phenylaminofluorane was added to 130 g of oxalic acid powder, and mechanical stirring was performed until a uniform cyan powder was obtained, and stirring was stopped to obtain a cyan fluorane colorant;
[0037] (3) Preparation of red fluorane colorant: 500 g of 6-(N-ethyl-4-toluidine)-2-methylfluorane was added with 100 g of oxalic acid powder, and mechanical stirring was performed until a uniform red powder was obtained and stirring was stopped to obtain a red fluorane colorant;
[0038] (4) preparing a mixed black colorant by mechanically mixing 640 g of yellow fluorane colorant, 720 g of cyan fluorane colorant and 590 g of red fluorane colorant. During the mixing process, the color gradually changes from a mixed color to a uniform black. When the black color is stable, stop mechanical stirring to obtain a mixed black colorant;
[0039] (5) Preparation of blank: 160 g of gum arabic, 150 g of bone glue, and 9 L of distilled water are heated to boiling to form a stable glue solution, cooled to 50° C., 1900 g of mixed black colorant, 190 g of sodium dodecylbenzene sulfonate, 19 g of borneol, 19 g of camphor oil, and 10 g of cloves are added in sequence, mixed and rolled, and hammered until the mixed black colorant is sticky and moist, indicating that the blank is ready;
[0040] (6) Pressing mold. The blank obtained in step 5 is rolled into a seamless ink fruit according to the specifications, pressed into an ink mold, and laid flat to dry. In the early stage of laying flat to dry, the ink stick is turned over every 2 hours to restore the flatness of the ink body that naturally arches during drying and shrinking. In the middle and late stages of drying, it is turned over every 5 hours. The temperature and humidity of the ink drying environment must be strictly controlled, and air must be blown to finally obtain the ink stick.
[0041] The final product of this embodiment, the ink stick, was taken, a small amount of water was added, and ground in an inkstone to obtain writing ink. The physical and chemical indexes of the ink product were tested according to the relevant standards for ink, and the results are shown in Table 2. The skin irritation test of the ink was further tested, and the results showed no skin irritation. In the water fading test, 10 times the volume of water was added, and the ink faded to colorless.
[0042] Table 2: Physical and chemical index test results
[0043]
[0044] Example 3
[0045] The method for preparing a decolorizable ink stick described in this embodiment comprises the following steps:
[0046] (1) Preparation of yellow fluorane colorant: 200 g of 3,6-dimethoxyfluorane was added to 62 g of oxalic acid powder, and the mixture was mechanically stirred until a uniform yellow powder was obtained, and then stirring was stopped to obtain a yellow fluorane colorant;
[0047] (2) Preparation of cyan fluorane colorant: 200 g of 3-diethylamino-6-methyl-7-phenylaminofluorane was added to 40 g of oxalic acid powder, and mechanical stirring was performed until a uniform cyan powder was obtained, and stirring was stopped to obtain a cyan fluorane colorant;
[0048] (3) Preparation of red fluorane colorant: 200 g of 6-(N-ethyl-4-toluidine)-2-methylfluorane was added to 40 g of oxalic acid powder, and mechanical stirring was performed until a uniform red powder was obtained, and stirring was stopped to obtain a red fluorane colorant;
[0049] (4) preparing a mixed black colorant by mechanically mixing 252 g of yellow fluorane colorant, 230 g of cyan fluorane colorant and 230 g of red fluorane colorant. During the mixing process, the color gradually changes from a mixed color to a uniform black. When the black color is stable, stop mechanical stirring to obtain a mixed black colorant;
[0050] (5) Preparation of blank: 2 g of gum arabic, 2 g of bone glue, and 100 mL of distilled water were heated to boiling to form a stable glue solution, cooled to 50° C., 700 g of mixed black colorant, 70 g of sodium dodecylbenzene sulfonate, 7 g of borneol, 7 g of camphor oil, and 5.6 g of cloves were added in sequence, mixed and rolled, and hammered until the mixed black colorant was sticky and moist, indicating that the blank was ready;
[0051] (6) Pressing mold. The blank obtained in step 5 is rolled into a seamless ink fruit according to the specifications, pressed into an ink mold, and laid flat to dry. In the early stage of laying flat to dry, the ink stick is turned over every 2 hours to restore the flatness of the ink body that naturally curls up during drying and shrinking. In the middle and late stages of drying, turn it over every 5 hours.
[0052] The final product of this embodiment, the ink stick, was taken, a small amount of water was added, and ground in an inkstone to obtain writing ink. The physical and chemical indexes of the ink product were tested according to the relevant standards for ink, and the results are shown in Table 3. The skin irritation test of the ink was further tested, and the results showed no skin irritation. In the water fading test, 10 times the volume of water was added, and the ink faded to colorless.
[0053] Table 3: Physical and chemical index test results
[0054] Serial number project grade 1 Color 1.40 2 diffusion Diffusion without glue spots and watermarks 3 Corrosion resistance No odor after anti-corrosion test 4 Usage Environment The ink does not freeze after the test and can be used normally 5 Thermal stability After testing, the product has no abnormality
Claims
1. A method for preparing a decolorizable ink stick, characterized in that: The following steps are involved: Step 1: Preparation of yellow fluorane colorant: taking yellow fluorane dye 3,6-dimethoxyfluorane and a color developer in a mass ratio of 3:1 to 4:1, mixing them evenly and stirring until color is developed to obtain a yellow fluorane colorant; Step 2: Preparation of cyan fluorane colorant: taking cyan fluorane dye and color developer in a mass ratio of 4.5:1 to 5.5:1, mixing them evenly and stirring until color is developed to obtain cyan fluorane colorant; Step 3: Preparation of red fluorane colorant: taking a red fluorane dye and a color developer in a mass ratio of 4:1 to 5:1, mixing them evenly and stirring until color is developed to obtain a red fluorane colorant; Step 4: Mechanically mix the yellow fluorane colorant, the cyan fluorane colorant and the red fluorane colorant in a mass ratio of 0.8-0.9:0.9-1.1:0.7-0.8 to obtain a mixed black colorant; Step 5: first take 8-10% of the colorant weight of gum arabic and 5-8% of the animal bone glue mixture, then add distilled water to boil the glue solution, cool to 50°C, then add the mixed black colorant obtained in step 4 and 10-12% of the surfactant in turn to increase the dispersion of the colorant, and at the same time add 1% of the colorant weight of the preservative and 1.5-2% of the colorant weight of the spices, and hammer repeatedly to make the various raw materials dispersed evenly, indicating that the blank is ready; Step 6: Take the blank obtained in step 5 and rub it into ink fruit according to standard specifications, and place the ink fruit in an ink block mold, press it into the ink mold to form it, and lay it flat to dry; in the early stage of laying it flat to dry, turn the ink block over every 3 hours to restore the flatness of the ink body that has naturally arched during drying and shrinking, so as to obtain a fadeable ink block.
2. The method for preparing the decolorizable ink stick according to claim 1, characterized in that: The developer is oxalic acid.
3. The method for preparing the decolorizable ink stick according to claim 1, characterized in that: The surfactant is sodium dodecylbenzene sulfonate.
4. The method for preparing a decolorizable ink stick according to claim 1, characterized in that: The preservative is borneol.
5. The method for preparing a decolorizable ink stick according to claim 1, characterized in that: The spice is a mixture of camphor oil and cloves.