Production process of environment-friendly chalk

A production process and technology of chalk, which is applied to pencil lead, household utensils, applications, etc. It can solve the problems of insufficient chalk production process, dust or toxic solvents in chalk, and difficulty in erasing, so as to achieve easy writing and moisturizing, and avoid dust Floating, fine powder effect

Inactive Publication Date: 2018-12-18
中国石油广安希望学校
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention is that the traditional chalk production process is not good enough, so that the chalk has dust or toxic solvents, and it is difficult to erase and other problems. Adopting a kind of environmental protection chalk production process provided by the present invention can not only make the chalk easy to write and Erasable, non-toxic and environmentally friendly, which improves the practicability and environmental protection of chalk

Method used

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  • Production process of environment-friendly chalk

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Effect test

Embodiment 1

[0023] The present invention is made of raw materials in parts by weight, including: 30-35 parts of titanium dioxide, 40-80 parts of gypsum powder, 2-10 parts of ceramic powder, 2-5 parts of palm wax; 5-7 parts of paraffin wax; castor oil 5-8 parts; 1-3 parts of fatty acid amide, 10-15 parts of fatty alcohol polyoxyethylene ether, 10-15 parts of polyethylene glycol, 1-2 parts of barium sulfate, 5-7 parts of butyl oleate, 1-2 parts of acid dye, 100-160 parts of water.

[0024] By adopting the chalk that the raw material in the above-mentioned embodiment is made, because there is palm wax, castor oil to add the chalk making raw material of palm wax, castor oil, fatty acid amide, fatty alcohol polyoxyethylene ether composition, due to the palm wax, castor oil The viscous and lubricating effects make the manufactured environmentally-friendly chalk soft, easy to write and moisturize, and avoid dust from chalk during writing.

Embodiment 2

[0026] like figure 1 Shown, in the figure S1, S2, S3, S4, S5 correspond respectively following steps (1), (2), (3), (4), (5) the environmental protection chalk production technology of the present invention comprises the following steps: (1) Weigh the chalk raw materials according to the parts by weight; (2) heat and melt the paraffin wax, palm wax, fatty alcohol polyoxyethylene ether and butyl oleate in the parts by weight; (3) put The titanium dioxide, gypsum powder, and ceramic powder are added into a ball mill for grinding; (4) the material melted in step (2) is mixed with the titanium dioxide, gypsum powder, ceramic powder, castor oil, and fatty acid amide in the stated parts by weight , polyethylene glycol, barium sulfate, and acid dyes, and stir with a stirrer; (4) Pour the stirred raw materials into the mold, and after cooling and solidifying, demould and form chalk.

[0027] What needs to be explained here is that the ball mill used in the present invention is a comm...

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Abstract

The invention discloses a production process of an environment-friendly chalk. The environment-friendly chalk is prepared from the following raw materials: titanium dioxide, gypsum powder, ceramic powder, palm wax, paraffin, castor oil, fatty acid amide, fatty alcohol polyoxyethylene ether, polyethylene glycol, barium sulfate, butyl oleate, acidic dye and water. By adopting the environment-friendly chalk production process of the invention, the produced environment-friendly chalk has the characteristics of softness, ease in writing and moistening, the scattering of dust of the chalk when in writing can be avoided, by adopting a ball milling and constant temperature injection molding way, the produced chalk powder is more exquisite, the chalk is molded in a warm manner, the writing smoothness of the chalk can be improved, and the dust produced in the molding of the chalk can be reduced.

Description

technical field [0001] The invention relates to the field of chalk production and manufacturing, in particular to a production process of environment-friendly chalk. Background technique [0002] Chalk is an important writing tool for blackboard demonstration and conveying teaching content in teaching activities. Although it has lasted for a long time, for school teaching, chalk is still fully used in all middle and primary schools and some university teaching activities. Chalk made by traditional crafts is made of gypsum, lime and other auxiliary materials. Although it has the characteristics of smooth, clear and easy to wipe, it still has many shortcomings. For example, the material is not hard enough, easy to break and break, not all Playing its role in writing and drawing will affect writing and cause a lot of waste; because the raw materials of the chalk itself are not detailed enough, the chalk is damp or the writing on the blackboard surface is not clear; serious dust...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D13/00
CPCC09D13/00
Inventor 杨光明
Owner 中国石油广安希望学校
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