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Preparation process of thermosensitive color-changing pencil lead

A heat-sensitive color changing and preparation process technology is applied in the field of heat-sensitive color-changing lead core preparation technology, which can solve the problems that lead cores do not have color change, are not easy to color, and are easy to break, so as to achieve non-toxic refills, various colors, and smooth writing. Effect

Inactive Publication Date: 2021-04-13
LOTUS STATIONERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Most of the traditional general lead cores do not have the performance of discoloration, and at the same time, they are easy to break and not easy to color. Therefore, we have improved this and proposed a heat-sensitive color-changing lead core preparation process.

Method used

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  • Preparation process of thermosensitive color-changing pencil lead

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Process steps:

[0038] Step 1: Prepare a certain amount of thermosensitive color-changing color paste, clay, filler, adhesive, deionized water, paraffin wax, stearic acid, carnauba wax, emulsifier and p-methyl diacetate;

[0039] Step 2: Weigh a certain amount of heat-sensitive color-changing color paste and filler and add it into the kneader to stir and knead evenly, then add the dissolved adhesive and deionized water, and continue kneading for 30 minutes;

[0040] Step 3: Weigh a certain amount of paraffin wax, carnauba wax main ingredients and emulsifier and heat them to 85°C, add them into the kneader after melting completely, and knead at 45-50°C for 30 minutes;

[0041] Step 4: Cool and discharge the material so that the water content of the mixed material is about 14%, and grind the material 2-3 times through a three-roller machine to make the water content 10-12%;

[0042] Step 5: After the lead core is dried to the required moisture, store it in a freezer bel...

Embodiment 2

[0045] Process steps:

[0046] Step 1: Prepare a certain amount of thermosensitive color-changing color paste, clay, filler, adhesive, deionized water, paraffin wax, stearic acid, carnauba wax, emulsifier and p-methyl diacetate;

[0047] Step 2: Weigh a certain amount of heat-sensitive color-changing color paste and filler and add it into the kneader to stir and knead evenly, then add the dissolved adhesive and deionized water, and continue kneading for 30 minutes;

[0048] Step 3: Weigh a certain amount of paraffin wax, carnauba wax main ingredients and emulsifier and heat them to 85°C, add them into the kneader after melting completely, and knead at 45-50°C for 30 minutes;

[0049] Step 4: Cool and discharge the material so that the water content of the mixed material is about 14%, and grind the material 2-3 times through a three-roller machine to make the water content 10-12%;

[0050] Step 5: After the lead core is dried to the required moisture, store it in a freezer bel...

Embodiment 3

[0053] Process steps:

[0054] Step 1: Prepare a certain amount of thermosensitive color-changing color paste, clay, filler, adhesive, deionized water, paraffin wax, stearic acid, carnauba wax, emulsifier and p-methyl diacetate;

[0055] Step 2: Weigh a certain amount of heat-sensitive color-changing color paste and filler and add it into the kneader to stir and knead evenly, then add the dissolved adhesive and deionized water, and continue kneading for 30 minutes;

[0056] Step 3: Weigh a certain amount of paraffin wax, carnauba wax main ingredients and emulsifier and heat them to 85°C, add them into the kneader after melting completely, and knead at 45-50°C for 30 minutes;

[0057] Step 4: Cool and discharge the material so that the water content of the mixed material is about 14%, and grind the material 2-3 times through a three-roller machine to make the water content 10-12%;

[0058] Step 5: After the lead core is dried to the required moisture, store it in a freezer bel...

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Abstract

The invention discloses a preparation process of a thermosensitive color-changing lead core. The preparation process is mainly prepared from the following raw materials: thermosensitive color-changing color paste, clay, a filler, an adhesive, deionized water, paraffin, stearic acid, palm wax, an emulsifier and p-methyldiacetate, and the material is simple in structure and novel in design, and has the characteristics of color display at normal temperature, when the pencil lead is heated to a certain temperature, the color disappears completely, the pencil lead is still colorless when the temperature returns to the normal temperature from the high temperature, the color returns to the original colored state when the temperature continues to be reduced to the critical temperature (color developing temperature), and meanwhile the pencil lead has the advantages of being smooth in writing, easy to color and not prone to breakage.

Description

technical field [0001] The invention relates to the technical field of heat-sensitive color-changing lead cores, in particular to a preparation process for heat-sensitive color-changing lead cores. Background technique [0002] Thermochromic materials are functional materials whose color changes significantly with temperature within a certain temperature range. As early as more than a hundred years ago, people discovered the phenomenon of thermal discoloration. The comprehensive research and application of thermochromic materials has a history of 60 to 70 years, and it has a history of more than 30 years in our country. After decades of research and development, people have developed various materials with thermochromic properties such as inorganic, organic, liquid crystal, polymer and biological macromolecules, and low-temperature thermosensitive color-changing pigments suitable for inks. [0003] Thermochromic materials are basically irreversible thermochromic materials ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D13/00
CPCC09D13/00
Inventor 黄小喜
Owner LOTUS STATIONERY
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