CN105885542B - Water-soluble non-dust chalk and preparation method thereof - Google Patents
Water-soluble non-dust chalk and preparation method thereof Download PDFInfo
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- CN105885542B CN105885542B CN201410613514.4A CN201410613514A CN105885542B CN 105885542 B CN105885542 B CN 105885542B CN 201410613514 A CN201410613514 A CN 201410613514A CN 105885542 B CN105885542 B CN 105885542B
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Abstract
The present invention provides a kind of water-soluble non-dust chalk and preparation method thereof, including following component and mass fraction: fixed oil: 12~25, stearic amide: 10~11,12- hydroxy octadecadienoic acid: 4~7, Brazil wax: 5~6, propylene glycol: 5~9, fatty alcohol polyoxyethylene ether: 5~9, rilanit special: 5~9, titanium dioxide (titanium dioxide): 38~40, kaolin: 3~5, barium sulfate: 4~7, nanometer calcium carbonate: 2~5, land plaster: 1~1.5, manufacturing process includes the preparation and molding of raw material.Water-soluble non-dust chalk of the invention is with water-soluble, finished surface is smooth, is not easily broken, fluent writing, nontoxic, free from extraneous odour, manufacturing process is pollution-free, finished product good mechanical property, dry and wet plate face can be write, generates without dust, is conducive to improve teaching environment and ensures human health.
Description
Technical field
The present invention relates to a kind of water-soluble non-dust chalks and preparation method thereof.
Background technique
Whole world teaching board is still based on traditional chalk at present, and traditional chalk is mainly by calcium carbonate (being commonly called as lime), cunning
The materials such as mountain flour, water are made.Row technologic improvement, gypsum chalk also appear widely in teaching classroom when in recent years.But
There is no fundamentally change a large amount of dust that can be scattered in use process for these chalks.These dust to disperse directly affect teachers and students
Health: after a large amount of dust is inhaled into, can cumulative toxicity is generated in human body, cause the diseases such as respiratory tract, lung, at
For the Health Killer of teachers and students；It also will affect the precision of teaching equipment simultaneously, increase equipment failure rate, to influence equipment
It normal use and reduces the service life, increases Teaching Equipment cost.
Summary of the invention
The object of the present invention is to provide a kind of water-soluble non-dust chalks, have water solubility, finished surface smooth, not easy to break
Disconnected, fluent writing, nontoxic, free from extraneous odour.
In addition, another object of the present invention is to provide a kind of production method of water-soluble non-dust chalk, manufacturing process is pollution-free,
Finished product good mechanical property, dry and wet plate face can be write, generate without dust, be conducive to improve teaching environment and ensure human health.
To achieve the goals above, The technical solution adopted by the invention is as follows:
A kind of water-soluble non-dust chalk, including following component and mass fraction: fixed oil: 12~25, stearic amide: 10
~11,12- hydroxy octadecadienoic acid: 4~7, Brazil wax: 5~6, propylene glycol: 5~9, fatty alcohol polyoxyethylene ether: 5~9, hydrogen
Change castor oil: 5~9, titanium dioxide (titanium dioxide): 38~40, kaolin: 3~5, barium sulfate: 4~7, nanometer calcium carbonate: 2~
5, land plaster: 1~1.5.
A kind of production method of water-soluble non-dust chalk, includes the following steps:
1) preparation of raw material:
A) fixed oil, stearic amide, Brazil wax, 12- hydroxy octadecadienoic acid are put into heat in heating bucket and are melted, and
Blender revolving speed is stepped up, when temperature reaches 100 DEG C, blender revolution is improved to 1800 revs/min；
B) propylene glycol, fatty alcohol polyoxyethylene ether, rilanit special are sequentially added, temperature gradually rises to 120 DEG C, blender
Revolution, which synchronizes, is gradually increased to 2000-2500 revs/min, is sufficiently stirred, allows each component to disperse, emulsification half an hour；
C) by titanium dioxide, kaolin, nanometer calcium carbonate, land plaster, barium sulfate sequentially add heating bucket in other raw materials
It melts together, disperses, emulsifies, temperature is kept for 120 DEG C, and blender revolution is kept for 2000-2500 revs/min, is stirred 1 hour；
2) it forms:
Emulsus raw material prepared by step 1 is by passing through the cooling system of molding die in magnetic drive pump injection moulding mold
It is cooled to 7 DEG C rapidly hereinafter, allowing raw material cooled and solidified to form, then demould preparing finished articles through squeezing.
According to above scheme, the heating bucket is double-layer structure, and bottom and bucket wall are equipped with heating tube.
According to above scheme, the blender is set at the top of the heating bucket.
According to above scheme, the molding die is the Disc mould of 9*80mm.
According to above scheme, the molding die is by the high-purity red copper material system with good fluidity and heating conduction
It forms.
According to above scheme, the cooling system of the molding die is circulating cooling system.
It further include colored oiliness environmental-friendly pigment according to above scheme, water-soluble dustless coloured chalk is made.
Cooling procedure of the invention is committed step, and the cooling chalk not in place that will cause does not form, and generates substandard products.Stirring
There are three effects, first is that making raw material in bucket sufficiently heated, heating temperature is allowed to reach uniform；Second is that material and material is allowed to reach good
Good fusion is uniform；Three allow material is sufficiently heated to emulsify, fine and smooth.So centainly according to not less than 2000- in terms of speed of agitator
Otherwise 2500 revs/min of speed operating will appear to achieve the desired results and merge uneven, the solid block of material appearance, Bu Nengshi
There are a large amount of substandard products in existing chalk molding.
The beneficial effects of the present invention are:
1) a variety of chemicals and food relevant raw materials are used, there is the water-soluble and feature of environmental protection；
2) manufacturing process is pollution-free, simple process；
3) finished surface is smooth, is not easily broken, fluent writing, nontoxic, free from extraneous odour；
4) finished product good mechanical property, dry and wet plate face can be write, generate without dust, be conducive to improve teaching environment and ensure
Human health.
Specific embodiment
Technical solution of the present invention is illustrated below with reference to embodiment.
Embodiment 1:
A kind of water-soluble non-dust chalk, including following component and quality: fixed oil: 120g, stearic amide: 100g, 12-
Hydroxy octadecadienoic acid: 40g, Brazil wax: 50g, propylene glycol: 50g, fatty alcohol polyoxyethylene ether: 50g, rilanit special: 50g,
Titanium dioxide: 380g, kaolin: 30g, barium sulfate: 40g, nanometer calcium carbonate: 20g, land plaster: 10g.
A kind of production method of water-soluble non-dust chalk, includes the following steps:
1) preparation of raw material:
A) fixed oil, stearic amide, Brazil wax, 12- hydroxy octadecadienoic acid are put into heat in heating bucket and are melted, and
Blender revolving speed is stepped up, when temperature reaches 100 DEG C, blender revolution is improved to 1800 revs/min；
B) propylene glycol, fatty alcohol polyoxyethylene ether, rilanit special are sequentially added, temperature gradually rises to 120 DEG C, blender
Revolution, which synchronizes, is gradually increased to 2000 revs/min, is sufficiently stirred, allows each component to disperse, emulsification half an hour；
C) by titanium dioxide, kaolin, nanometer calcium carbonate, land plaster, barium sulfate sequentially add heating bucket in other raw materials
It melts together, disperses, emulsifies, temperature is kept for 120 DEG C, and blender revolution is kept for 2500 revs/min, is stirred 1 hour；
2) it forms:
Emulsus raw material prepared by step 1 is by passing through the cooling system of molding die in magnetic drive pump injection moulding mold
It is cooled to 7 DEG C rapidly hereinafter, allowing raw material cooled and solidified to form, then demould preparing finished articles through squeezing.
Embodiment 2:
A kind of water-soluble non-dust chalk, including following component and mass fraction: fixed oil: 250g, stearic amide:
110g, 12- hydroxy octadecadienoic acid: 70g, Brazil wax: 60g, propylene glycol: 90g, fatty alcohol polyoxyethylene ether: 90g, hydrogenation castor
Sesame oil: 90g, titanium dioxide: 400g, kaolin: 50g, barium sulfate: 70g, nanometer calcium carbonate: 50g, land plaster: 15g.
A kind of production method of water-soluble non-dust chalk, includes the following steps:
1) preparation of raw material:
A) fixed oil, stearic amide, Brazil wax, 12- hydroxy octadecadienoic acid are put into heat in heating bucket and are melted, and
Blender revolving speed is stepped up, when temperature reaches 100 DEG C, blender revolution is improved to 1800 revs/min；
B) propylene glycol, fatty alcohol polyoxyethylene ether, rilanit special are sequentially added, temperature gradually rises to 120 DEG C, blender
Revolution, which synchronizes, is gradually increased to 2500 revs/min, is sufficiently stirred, allows each component to disperse, emulsification half an hour；
C) by titanium dioxide, kaolin, nanometer calcium carbonate, land plaster, barium sulfate sequentially add heating bucket in other raw materials
It melts together, disperses, emulsifies, temperature is kept for 120 DEG C, and blender revolution is kept for 2000 revs/min, is stirred 1 hour；
2) it forms:
Emulsus raw material prepared by step 1 is by passing through the cooling system of molding die in magnetic drive pump injection moulding mold
It is cooled to 7 DEG C rapidly hereinafter, allowing raw material cooled and solidified to form, then demould preparing finished articles through squeezing.
Embodiment 3:
A kind of water-soluble non-dust chalk, including following component and mass fraction: fixed oil: 180g, stearic amide:
105g, 12- hydroxy octadecadienoic acid: 50g, Brazil wax: 55g, propylene glycol: 70g, fatty alcohol polyoxyethylene ether: 80g, hydrogenation castor
Sesame oil: 60g, titanium dioxide: 390g, kaolin: 40g, barium sulfate: 50g, nanometer calcium carbonate: 30g, land plaster: 13g.
A kind of production method of water-soluble non-dust chalk, includes the following steps:
1) preparation of raw material:
A) fixed oil, stearic amide, Brazil wax, 12- hydroxy octadecadienoic acid are put into heat in heating bucket and are melted, and
Blender revolving speed is stepped up, when temperature reaches 100 DEG C, blender revolution is improved to 1800 revs/min；
B) propylene glycol, fatty alcohol polyoxyethylene ether, rilanit special are sequentially added, temperature gradually rises to 120 DEG C, blender
Revolution, which synchronizes, is gradually increased to 2300 revs/min, is sufficiently stirred, allows each component to disperse, emulsification half an hour；
C) by titanium dioxide, kaolin, nanometer calcium carbonate, land plaster, barium sulfate sequentially add heating bucket in other raw materials
It melts together, disperses, emulsifies, temperature is kept for 120 DEG C, and blender revolution is kept for 2400 revs/min, is stirred 1 hour；
2) it forms:
Emulsus raw material prepared by step 1 is by passing through the cooling system of molding die in magnetic drive pump injection moulding mold
It is cooled to 7 DEG C rapidly hereinafter, allowing raw material cooled and solidified to form, then demould preparing finished articles through squeezing.
Embodiment 4:
A kind of water-soluble non-dust chalk, including following component and mass fraction: fixed oil: 200g, stearic amide:
100g, 12- hydroxy octadecadienoic acid: 50g, Brazil wax: 50g, propylene glycol: 60g, fatty alcohol polyoxyethylene ether: 70g, hydrogenation castor
Sesame oil: 80g, titanium dioxide: 380g, kaolin: 30g, barium sulfate: 70g, nanometer calcium carbonate: 50g, land plaster: 10g, reddish oil
Property environmental-friendly pigment 10g.
A kind of production method of water-soluble non-dust chalk, includes the following steps:
1) preparation of raw material:
A) fixed oil, stearic amide, Brazil wax, 12- hydroxy octadecadienoic acid are put into heat in heating bucket and are melted, and
Blender revolving speed is stepped up, when temperature reaches 100 DEG C, blender revolution is improved to 1800 revs/min；
B) propylene glycol, fatty alcohol polyoxyethylene ether, rilanit special are sequentially added, temperature gradually rises to 120 DEG C, blender
Revolution, which synchronizes, is gradually increased to 2200 revs/min, is sufficiently stirred, allows each component to disperse, emulsification half an hour；
C) titanium dioxide, kaolin, nanometer calcium carbonate, land plaster, barium sulfate, red oiliness environmental-friendly pigment are sequentially added and is added
It is melted together with other raw materials in hot bucket, disperses, emulsifies, temperature is kept for 120 DEG C, and blender revolution is kept for 2500 revs/min, stirring
1 hour；
2) it forms:
Emulsus raw material prepared by step 1 is by passing through the cooling system of molding die in magnetic drive pump injection moulding mold
It is cooled to 7 DEG C rapidly hereinafter, allowing raw material cooled and solidified to form, then demould preparing finished articles through squeezing.
Claims (7)
1. a kind of production method of water-soluble non-dust chalk, which is characterized in that chalk includes following component and mass fraction: hardening
Oil: 12~25, stearic amide: 10~11,12- hydroxy octadecadienoic acid: 4~7, Brazil wax: 5~6, propylene glycol: 5~9, rouge
Fat alcohol polyoxyethylene ether: 5~9, rilanit special: 5~9, titanium dioxide: 38~40, kaolin: 3~5, barium sulfate: 4~7,
Nanometer calcium carbonate: 2~5, land plaster: 1~1.5:
The production method of water-soluble non-dust chalk includes the following steps:
1) preparation of raw material:
A) fixed oil, stearic amide, Brazil wax, 12- hydroxy octadecadienoic acid are put into heat in heating bucket and are melted, and gradually
Blender revolving speed is improved, when temperature reaches 100 DEG C, blender revolution is improved to 1800 revs/min；
B) propylene glycol, fatty alcohol polyoxyethylene ether, rilanit special are sequentially added, temperature gradually rises to 120 DEG C, blender revolution
It synchronizes and is gradually increased to 2000-2500 revs/min, be sufficiently stirred, allow each component to disperse, emulsification half an hour；
C) by titanium dioxide, kaolin, nanometer calcium carbonate, land plaster, barium sulfate sequentially add heating bucket in other raw materials one
Fusing, dispersion, emulsification are played, temperature is kept for 120 DEG C, and blender revolution is kept for 2000-2500 revs/min, is stirred 1 hour；
2) it forms:
The emulsus raw material of step 1) preparation is passed through in magnetic drive pump injection moulding mold, it is rapid by the cooling system of molding die
7 DEG C are cooled to hereinafter, allowing raw material cooled and solidified to form, then demould preparing finished articles through squeezing.
2. water-soluble non-dust chalk production method according to claim 1, which is characterized in that the heating bucket is the double-deck knot
Structure, bottom and bucket wall are equipped with heating tube.
3. water-soluble non-dust chalk production method according to claim 1, which is characterized in that the blender is set to described
It heats at the top of bucket.
4. water-soluble non-dust chalk production method according to claim 1, which is characterized in that the molding die is 9*
The Disc mould of 80mm.
5. water-soluble non-dust chalk production method according to claim 1, which is characterized in that the molding die is by having
Good fluidity and the high-purity red copper material of heating conduction are made.
6. water-soluble non-dust chalk production method according to claim 1, which is characterized in that the cooling of the molding die
System is circulating cooling system.
7. water-soluble non-dust chalk production method according to claim 1, which is characterized in that further include colored oiliness environmental protection
Pigment, water-soluble dustless coloured chalk is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410613514.4A CN105885542B (en) | 2014-11-03 | 2014-11-03 | Water-soluble non-dust chalk and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410613514.4A CN105885542B (en) | 2014-11-03 | 2014-11-03 | Water-soluble non-dust chalk and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN105885542A CN105885542A (en) | 2016-08-24 |
| CN105885542B true CN105885542B (en) | 2019-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226050A (en) * | 2011-06-16 | 2011-10-26 | 许明铁 | Dust-free chalk and manufacture method thereof |
| CN103254692A (en) * | 2013-05-21 | 2013-08-21 | 湖南省状元坊教育科技发展有限公司 | Water-soluble environment-friendly chalk and preparation method thereof |
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2014
- 2014-11-03 CN CN201410613514.4A patent/CN105885542B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226050A (en) * | 2011-06-16 | 2011-10-26 | 许明铁 | Dust-free chalk and manufacture method thereof |
| CN103254692A (en) * | 2013-05-21 | 2013-08-21 | 湖南省状元坊教育科技发展有限公司 | Water-soluble environment-friendly chalk and preparation method thereof |
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| CN105885542A (en) | 2016-08-24 |
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