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Powder chalk

A technology of chalk and medicinal powder, applied in the field of teaching, to achieve the effect of inhibiting the growth of bacteria

Inactive Publication Date: 2018-02-09
四川省广安中学实验学校
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no effective way to prevent and control dust, so it is very important to find powder chalk that prevents and alleviates the hazards of dust.

Method used

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Examples

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Effect test

Embodiment 1

[0012] Strawberry volatile oil: Weigh 10 portions of fresh strawberry leaves, crush them with a cooking machine, and transfer them completely into a 1000mL distillation flask, inject 10 to 15 times the volume of distilled water, install a volatile oil extractor, distill for 2 hours, stop heating and continue to Add condensed water to reflux until no liquid drips from the condenser tube. After natural stratification in the extractor, take out the oily substance in the upper layer, add an appropriate amount of anhydrous sodium sulfate, and let it stand overnight to remove the residual water in the volatile oil to obtain raspberry volatile oil, which is then sealed and stored in a refrigerator at 4°C and protected from light until use.

Embodiment 2

[0014] Weigh 13 parts by mass of licorice, 18 parts by mass of bellflower, 13 parts by mass of tangerine peel, and 14 parts by mass of radish, pulverize, grind, and sieve to make a powder with a particle size of 10-80 μm, and mix evenly, then add 24 parts by mass of water. 30 parts by mass of Avalokitesvara soil, 20 parts by mass of borax, 10 parts by mass of ammonium chloride, 9 parts by mass of β-carotene, 8 parts by mass of soluble starch, and 10 parts by mass of raspberry volatile oil. After fully mixing and stirring, the mixture is sent into The screw extruder that smears kerosene in advance is extruded, and the extruded chalk is cut off according to the required length and dried, and the dried chalk is immersed in a 10wt% aqueous solution made of polyvinyl alcohol, and then dried to obtain the medicinal powder of the present invention chalk.

Embodiment 3

[0016] Weigh 10 parts by mass of licorice, 20 parts by mass of bellflower, 11 parts by mass of tangerine peel, and 17 parts by mass of radish, pulverize, grind, and sieve to make a powder with a particle size of 60-100 μm, and mix well, then add 26 parts by mass of water 26 parts by mass of Avalokitesvara, 23 parts by mass of borax, 6 parts by mass of ammonium chloride, 11 parts by mass of beet red, 6 parts by mass of soluble starch, and 8 parts by mass of ethyl lactate. The screw extruder of kerosene is extruded, and the extruded chalk is cut off according to the required length and dried, and the dried chalk is immersed in a 10wt% aqueous solution made of polyvinyl alcohol, and then dried to obtain the medicated powder chalk of the present invention.

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Abstract

The invention discloses a medicated powder chalk. The composition of the medicated powder chalk comprises: 26-34 parts by mass of Guanyin soil, 16-23 parts by mass of borax, 6-14 parts by mass of ammonium chloride, 10-16 parts by mass of licorice, and 16-23 parts by mass of bellflower 20 parts by mass, 11-16 parts by mass of tangerine peel, 10-17 parts by mass of radish seeds, 7-11 parts by mass of food coloring, 6-10 parts by mass of soluble starch, 8-12 parts by mass of flavoring agent, and 21-26 parts by mass of water.

Description

technical field [0001] The invention relates to the teaching field, in particular to a medicated powder chalk. Background technique [0002] Solid chalk is an essential tool for teaching at present, and imparting knowledge with it is the most primitive and traditional teaching method. However, its chemical materials mainly use calcium carbonate or gypsum powder. The use of chalk in the teaching process will generate a lot of dust, which is not only not conducive to protecting the health of teachers and students, but also affects the teaching effect. Pneumoconiosis caused by dust produced by chalk materials is the most serious and common occupational disease in China, especially for students in the growth and development stage, who spend most of the day in the classroom. , Under the conditions of such a large contact area, the impact and harm of classroom air pollution on the health of young people has become a problem that cannot be ignored. At present, there is no effecti...

Claims

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Application Information

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IPC IPC(8): C09D13/00A61K36/752A61P1/14A61P1/00A61P11/14A61P11/06A61P39/02A61P11/12A61K36/73A61P31/04
CPCC09D13/00A61K36/31A61K36/346A61K36/484A61K36/73A61K36/752A61K2300/00
Inventor 胡春林
Owner 四川省广安中学实验学校
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