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A kind of black ink and preparation method thereof

An ink and black technology, applied in the field of black ink and its preparation, can solve the problems of unfavorable document preservation, delamination and precipitation, clogging of the pen tip, etc., and achieve the effects of smooth and durable writing, low cost and stable performance.

Inactive Publication Date: 2014-10-01
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ink formula contains some chemical substances that are harmful to the human body, and the ink stains of most pigments are easy to fade, which is not conducive to the preservation of manuscripts
Carbon ink is the most widely used black ink in fountain pens. The main colorant is carbon black. Carbon black is the product of incomplete combustion or cracking of organic matter. The main component is carbon, which is a kind of non-hydrophilic black powder. It is very finely ground, and it cannot be made into ink after adding water. It must be treated or added with special functional additives before it can be made into ink. The process is complicated, the cost is high, and the "three wastes" are serious. It is relatively high, it is insoluble in water and has no self-dispersion. It is easy to cause stratification and precipitation when it is placed for a long time, and it is also easy to cause clogging of the nib. To solve such problems, dispersants, stabilizers, suspending agents, emulsifiers, etc. are usually added. Long-term stable dispersion and suspension of carbon black in water increases the complexity and cost of the process
Carbon ink generally has uneven writing, and if it is written intermittently, it is easy to dry up and block the pen, and it cannot meet the needs of computer graphics.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: The composition and mass percentage of this black ink are: sodium humate 5%, stabilizer PEG polysaccharide 5%, wetting agent (glycerin, ethylene glycol) 12.8%, dispersant polyacrylate 5%, preservative sodium benzoate 0.3%, antifoaming agent trimethicone 0.5%, deionized water 70%, blackening agent pomegranate peel juice 1.0%, flavor enhancer clove extract 0.4%.

[0026] The preparation method of this black ink is as follows:

[0027] (1) Divide 700g of deionized water into two parts, heat one part of 500g to 80°C, add 50g of polyacrylate and 50g of PEG polysaccharide into the heated deionized water, and stir at a speed ranging from slow to fast. Rotate at 1500r / min, stir until colorless and transparent;

[0028] (2) Add 128g of wetting agent (80g glycerin, 48g ethylene glycol), and continue stirring for 10 minutes;

[0029] (3) Add 50g of sodium humate to another 200g of deionized water and stir to dissolve, then add the sodium humate solution into the s...

Embodiment 2

[0036] Example 2: The composition and mass percentage of this black ink are: sodium humate 10%, stabilizer PEG polysaccharide 13.8%, wetting agent (glycerin, triethanolamine) 15%, dispersant xanthan gum 10%, preservative sorbic acid 0.2% %, antifoaming agent trimethicone 0.3%, deionized water 50%, blackening agent pomegranate peel juice 0.5%, flavoring agent clove extract 0.2%.

[0037] The preparation method of this black ink is as follows:

[0038] (1) Divide 500g of deionized water into two parts, heat one part of 300g to 82°C, add 138g of PEG polysaccharide and 100g of xanthan gum into the heated deionized water, and stir at a speed from slow to fast. Rotate at 1000r / min, stir until colorless and transparent;

[0039] (2) Add 150g of wetting agent (100g of glycerin, 50g of ethylene glycol) and continue stirring for 12 minutes;

[0040] (3) Add 100g of sodium humate into another 200g of deionized water and stir to dissolve, add the sodium humate solution into the soluti...

Embodiment 3

[0046] Example 3: The composition and mass percentage of this black ink are: sodium humate 8%, stabilizer polyvinyl alcohol 15%, wetting agent glycerin 5%, dispersant dextrin 8%, preservative sodium benzoate 0.1%, defoamer ( Trimethicone oil, dimethyl polysiloxane) 0.2%, deionized water 62.7%, blackening agent pomegranate peel juice 0.7%, flavor enhancer clove extract 0.3%.

[0047] The preparation method of this black ink is as follows:

[0048] (1) Divide 627g of deionized water into two parts, heat one part of 427g to 78°C, add 150g of polyvinyl alcohol and 80g of dextrin into the heated deionized water, stir at a speed from slow to fast, and control the speed 500r / min, stirring until colorless and transparent;

[0049] (2) Add 50g of wetting agent glycerin and continue stirring for 8 minutes;

[0050] (3) Add 80g of sodium humate into another 200g of deionized water and stir to dissolve, add the sodium humate solution into the solution in step (2), mix well, then add 7g ...

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PUM

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Abstract

The invention discloses a black ink using sodium humate as a coloring material and a preparation method thereof, which comprises the following ingredients in weight percent: 5-10% of sodium humic acid coloring material, 5-10% of a stabilizer, and 5% of a wetting agent -15%, dispersant 5-10%, preservative 0.1-0.3%, defoamer 0.2-0.5%, blackening agent 0.5-1.0%, flavor enhancer 0.2-0.4%, deionized water 50-70%; The ink provided by the invention has the advantages of environmental protection, simple process, low cost, smooth writing, stable performance, strong color, and delicate taste.

Description

technical field [0001] The invention relates to an ink and a preparation method thereof, in particular to a black ink using sodium humate as a coloring material and a preparation method thereof. Background technique [0002] Ink is a liquid containing pigments or dyes that is used for writing or drawing. The formula of the ink contains some chemical substances that are harmful to the human body, and the ink stains of most pigments are easy to fade, which is not conducive to the preservation of manuscripts. Carbon ink is the most widely used black ink in fountain pens. The main colorant is carbon black. Carbon black is the product of incomplete combustion or cracking of organic matter. The main component is carbon, which is a kind of non-hydrophilic black powder. It is very finely ground, and it cannot be made into ink after adding water. It must be treated or added with special functional additives before it can be made into ink. The process is complicated, the cost is high...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/17
Inventor 李宝才杨静韦曦何静张惠芬
Owner KUNMING UNIV OF SCI & TECH
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