CN102226050B - Dust-free chalk and manufacture method thereof - Google Patents
Dust-free chalk and manufacture method thereof Download PDFInfo
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- CN102226050B CN102226050B CN 201110161722 CN201110161722A CN102226050B CN 102226050 B CN102226050 B CN 102226050B CN 201110161722 CN201110161722 CN 201110161722 CN 201110161722 A CN201110161722 A CN 201110161722A CN 102226050 B CN102226050 B CN 102226050B
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 title abstract description 6
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims abstract description 18
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000004615 ingredient Substances 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 12
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 10
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 8
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 7
- 239000007765 cera alba Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000010445 mica Substances 0.000 claims abstract description 7
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 7
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 7
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 7
- 235000012424 soybean oil Nutrition 0.000 claims abstract description 7
- 239000003549 soybean oil Substances 0.000 claims abstract description 7
- 239000008117 stearic acid Substances 0.000 claims abstract description 7
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 7
- 235000013869 carnauba wax Nutrition 0.000 claims abstract description 6
- 239000004203 carnauba wax Substances 0.000 claims abstract description 6
- 229940051841 polyoxyethylene ether Drugs 0.000 claims abstract description 6
- 229920000056 polyoxyethylene ether Polymers 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 238000002844 melting Methods 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 9
- 238000004945 emulsification Methods 0.000 claims description 8
- 239000006185 dispersion Substances 0.000 claims description 7
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 claims description 6
- 239000004593 Epoxy Substances 0.000 claims description 6
- DCXXMTOCNZCJGO-UHFFFAOYSA-N Glycerol trioctadecanoate Natural products CCCCCCCCCCCCCCCCCC(=O)OCC(OC(=O)CCCCCCCCCCCCCCCCC)COC(=O)CCCCCCCCCCCCCCCCC DCXXMTOCNZCJGO-UHFFFAOYSA-N 0.000 claims description 6
- LXCFILQKKLGQFO-UHFFFAOYSA-N methylparaben Chemical class COC(=O)C1=CC=C(O)C=C1 LXCFILQKKLGQFO-UHFFFAOYSA-N 0.000 claims description 5
- 239000000047 product Substances 0.000 claims description 4
- 239000012467 final product Substances 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 230000015556 catabolic process Effects 0.000 claims 1
- 238000006731 degradation reaction Methods 0.000 claims 1
- 238000003912 environmental pollution Methods 0.000 claims 1
- 229910052500 inorganic mineral Inorganic materials 0.000 claims 1
- 239000011707 mineral Substances 0.000 claims 1
- 239000003921 oil Substances 0.000 abstract description 6
- 235000019198 oils Nutrition 0.000 abstract description 6
- 239000000428 dust Substances 0.000 abstract description 4
- 230000014759 maintenance of location Effects 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract description 2
- 239000002075 main ingredient Substances 0.000 abstract 3
- IIZPXYDJLKNOIY-JXPKJXOSSA-N 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCC\C=C/C\C=C/C\C=C/C\C=C/CCCCC IIZPXYDJLKNOIY-JXPKJXOSSA-N 0.000 abstract 1
- 239000000839 emulsion Substances 0.000 abstract 1
- 239000003344 environmental pollutant Substances 0.000 abstract 1
- 150000002191 fatty alcohols Chemical class 0.000 abstract 1
- 239000000787 lecithin Substances 0.000 abstract 1
- 229940067606 lecithin Drugs 0.000 abstract 1
- 235000010445 lecithin Nutrition 0.000 abstract 1
- 231100000956 nontoxicity Toxicity 0.000 abstract 1
- -1 paraben ester Chemical class 0.000 abstract 1
- 231100000719 pollutant Toxicity 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000009325 pulmonary function Effects 0.000 description 1
- 235000019633 pungent taste Nutrition 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 235000019640 taste Nutrition 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Landscapes
- Inks, Pencil-Leads, Or Crayons (AREA)
- Cosmetics (AREA)
Abstract
The present invention discloses a dust-free chalk and a manufacture method thereof. The dust-free chalk comprises a main ingredient and an auxiliary ingredient used as raw materials, wherein the main ingredient is composed of the following components in parts by mass: 10-16 parts of hardened oil, 12-18 parts of stearic acid, 3-6 parts of white beeswax, 1-3 parts of carnauba wax, 2-5 parts of propylene glycol, 1-2 parts of lecithin, 7-12 parts of fatty alcohol polyoxyethylene ether, 6-10 parts of epoxidized soybean oil and 0.1-0.5 part of paraben ester; and the auxiliary ingredient comprises the following components in parts by mass: 30-35 parts of titanium dioxide, 2-5 parts of nano calcium carbonate and 6-10 parts of mica powder. The manufacture method of the dust-free chalk comprises: firstly heating and stirring the main ingredient to obtain an emulsion, adding the auxiliary ingredient, stirring, then injecting the mixture into a mold for molding, condensing and demolding to obtain a finished product. The dust-free chalk has the advantages of good weathering resistance and moisture retention, writing lubricity, bright writing, moderate hardness, low possibility of breakage, no toxicity or odor and no dust generated during using and wiping processes. The selected materials are readily available soluble environmentally-friendly materials, and no pollutants are generated during the production process of the dust-free chalk.
Description
Technical field
The present invention relates to a kind of dust-free chalk and preparation method thereof.
Background technology
Chalk is one of the most widely used conventional teaching instrument at present, and traditional chalk main component is the airsetting starting material, forms with materials such as gypsum, calcium carbonate, talcum powder, water.The tradition chalk in use can produce a large amount of fine dusts, severe contamination indoor instruction environment, these harmful pellets are known from experience the generation cumulative toxicity to the people, directly affect human respiratory tract and the heart, pulmonary function, thereby the grievous injury teachers and students are healthy.
Also organic and inorganic type dust-free chalk in the market, but be weak and deficiency, be mainly manifested in:
1, quality is too hard, writing is too thin, writing effect is undesirable;
2, peculiar smell is arranged, the pungency undesirable taste is too heavy;
3, weather resistance is poor, softening temperature is too low, easy distortion, high temperature writing ability poor (〉=37 ℃);
4, too greasy, the sticking hand in chalk surface, swash skin is favourable.
Summary of the invention
For solving problems of the prior art, the invention provides a kind of dust-free chalk and preparation method thereof, resulting a kind of dust-free chalk smooth surface, tack-free, the good congealing point of weather resisteant is low, and high temperature (+41 ℃) is normally write, soft or hard is suitable, clear, nontoxic, the free from extraneous odour of frangibility, fluent writing, writing not; But this product physics, good mechanical property wet rubbing is wet write easy to use, pollution-free without dust, favourable teaching environment and the HUMAN HEALTH of giving.
Technical solution of the present invention is: a kind of dust-free chalk main raw material composition and mass ratio are:
1, major ingredient
Winterized stearin: 10～16, stearic acid: 12～18, cera alba; 3～6, carnauba wax: 1～3, propylene glycol: 2～5, Yelkin TTS: 1～2, fatty alcohol-polyoxyethylene ether: 7～12, epoxy soybean oil: 6～10, nipagin esters: 0.1～0.5;
2, auxiliary material
Titanium dioxide: 30～35, nano-calcium carbonate: 2～5, mica powder 6～10.
Above-mentioned a kind of dust-free chalk making method step is as follows:
(1) fusing major ingredient
Winterized stearin, stearic acid, cera alba, carnauba wax are added by mass parts the fusing of heating in melting pot, when reaching 90 ℃, temperature adds respectively propylene glycol, Yelkin TTS, fatty alcohol-polyoxyethylene ether, epoxy soybean oil, nipagin esters by mass parts again, temperature: 105～110 ℃, with stirrer take revolution as 1600～2000 rev/mins, fully stirring, dispersion, emulsification got final product in 15～30 minutes;
(2) configuration raw material
Titanium dioxide, nano-calcium carbonate, mica powder are added respectively by mass parts in the melting pot of heated and stirred major ingredient, dispersion, emulsification, 95～110 ℃ of temperature, 1800～2200 rev/mins of stirrer revolutions stir and namely can be made into raw material in 1.5～2 hours;
(3) a kind of making of dust-free chalk
The raw material that stirs is injected in mould 85～95 ℃ of temperature, through cooled and solidified, namely obtain finished product after the compacting demoulding;
Compared with prior art, the invention has the beneficial effects as follows:
1, do main raw material with renewable resources selecting on starting material, biological degradability is good, reduces from the source to eliminate objectionable impurities and produce, and is conducive to environmental protection;
2, nontoxic, harmless, the free from extraneous odour of product is to the skin nonirritant;
3, physics, satisfactory mechanical property can be write at teaching green plate, blank, sheet glass and various smooth plate face, but wet rubbing wet write easy to use;
4, write feel exquisiteness, smoothness, writing clear, write with wiping process in without dust;
5, congealing point is low, and moisture retention and weather resistance are outstanding, can adapt to severe environment, writes under+41 ℃ of high temperature normally, and+45 ℃ of main high temperature are indeformable;
6, a kind of dust-free chalk surface be smooth to the touch dry and comfortable, without greasy feeling, tack-free, without any corrodibility;
7, use rear residue chalk end recyclable, repeated melting pours into a kind of dust-free chalk;
8, production technique is simple, and contamination-free produces.
Embodiment
Embodiment 1
1, with winterized stearin: 13.5g, stearic acid: 16g, cera alba: 4.5g, cohune is put wax: 1.5g, add the melting pot fusing of heating, and when reaching 90 ℃, temperature adding respectively: propylene glycol: 2.5g, Yelkin TTS 1g, fatty alcohol-polyoxyethylene ether: 10g, epoxy soybean oil: 7g, nipagin esters: 0.1g.110 ℃ of service temperatures, stirrer be with 1600 rev/mins, stirring, dispersion, emulsification 20 minutes;
2, with titanium dioxide: 33g, nano-calcium carbonate: 3g, mica powder: 8g adds respectively in the melting pot of heated and stirred, dispersion, emulsification, 100 ℃ of temperature, stirrer stirs and namely completed the raw material making in 1.5 hours with 1800 rev/mins;
3, the raw material that stirs is remained on 90 ℃ and inject mould after cooled and solidified, the compacting demoulding, can obtain a kind of dust-free chalk of moulding;
A kind of dust-free chalk good weatherability of 4, producing as stated above, indeformable under+45 ℃ of severe environment, normally write for+41 ℃, and soft durometer is moderate, surface dry without greasy feeling, write that feel is good, writing is clear, write but wet rubbing is wet, without dust, do not stay oil stain when erasable, can keep the cleaning of blackboard; Production technique is simple, and contamination-free produces.
Embodiment 2
Colored a kind of dust-free chalk making method:
To compare step 2 different from embodiment 1, and all the other steps are all identical with embodiment 1, below set forth the 2nd step:
2, with the emulsification of major ingredient dispersed with stirring after 20 minutes with titanium dioxide: 30g, nano-calcium carbonate: 3g, mica powder: 8g, oil color: 3g, the interior stirring of melting pot, dispersion, the emulsification that add respectively the heated and stirred major ingredient, 100 ℃ of temperature, 1800 rev/mins of stirrer rotating speeds, oil color has Oil Yellow, oil red, solvent blue etc., they can be scattered in the melting pot internal solvent, colored a kind of dust-free chalk of gained is compared with embodiment 1 as stated above, has increased the chalk color, and all the other effects are identical with embodiment 1.
Claims (3)
1. dust-free chalk, it is characterized in that: be comprised of major ingredient and auxiliary material, composition and the mass parts of its main raw material are as follows:
Major ingredient mass parts (%):
Winterized stearin: 10～16, stearic acid: 12～18, cera alba: 3～6, carnauba wax: 1～3, propylene glycol: 2～5, Yelkin TTS: 1～2, fatty alcohol-polyoxyethylene ether; 7～12, epoxy soybean oil: 6～10, nipagin esters: 0.1～0.5;
Auxiliary material mass parts (%):
Titanium dioxide: 30～35, nano-calcium carbonate: 2～5, mica powder 6～10.
2. according to claim 1, a kind of dust-free chalk is characterized in that: major ingredient cera alba used, carnauba wax, winterized stearin, stearic acid, epoxy soybean oil with renewable resources as main raw; Auxiliary material belongs to the mineral organic powder, and selectivity is good free from environmental pollution, and a kind of dust-free chalk is met the water natural degradation in using wiping process, and back to nature reduces from the source eliminates the objectionable impurities generation.
3. a kind of making method of dust-free chalk according to claim 1, is characterized in that, adopts following steps:
(1) fusing major ingredient
Winterized stearin, stearic acid, cera alba, carnauba wax are added by mass parts the fusing of heating in melting pot, when reaching 90 ℃, temperature adds respectively propylene glycol, Yelkin TTS, fatty alcohol-polyoxyethylene ether, epoxy soybean oil, nipagin esters by mass parts again, temperature: 105～110 ℃, 1600～2000 rev/mins of stirrer revolutions, fully stirring, dispersion, emulsification got final product in 15～30 minutes;
(2) configuration raw material
Titanium dioxide, nano-calcium carbonate, mica powder are joined respectively by mass parts in the melting pot of heated and stirred major ingredient, dispersion, emulsification, 95～110 ℃ of temperature, 1800～2200 rev/mins of stirrer revolutions, stir and namely can be made into raw material in 1.5～2 hours:
(3) a kind of making of dust-free chalk
The raw material that stirs is injected at 85～95 ℃ of temperature in mould, through cooled and solidified, namely obtain finished product after the compacting demoulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110161722 CN102226050B (en) | 2011-06-16 | 2011-06-16 | Dust-free chalk and manufacture method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110161722 CN102226050B (en) | 2011-06-16 | 2011-06-16 | Dust-free chalk and manufacture method thereof |
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| Publication Number | Publication Date |
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| CN102226050A CN102226050A (en) | 2011-10-26 |
| CN102226050B true CN102226050B (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110161722 Expired - Fee Related CN102226050B (en) | 2011-06-16 | 2011-06-16 | Dust-free chalk and manufacture method thereof |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102673246A (en) * | 2012-05-16 | 2012-09-19 | 浙江创元文具制造有限公司 | Dust-free chalk machining device and use method thereof |
| CN103045018B (en) * | 2012-09-07 | 2015-02-25 | 象山星旗电器科技有限公司 | Dust-free and environment-friendly chalk and preparation method thereof |
| CN103692818B (en) * | 2014-01-12 | 2016-03-30 | 大连百亿欧粉笔科技发展有限公司 | A kind of food-grade scribble chalk |
| CN105885542B (en) * | 2014-11-03 | 2019-07-16 | 宁波易威教育用品有限公司 | Water-soluble non-dust chalk and preparation method thereof |
| CN108129915A (en) * | 2017-12-28 | 2018-06-08 | 南京工程学院 | Chalk dust recycles production technology |
| CN109852147A (en) * | 2019-03-20 | 2019-06-07 | 张一田 | It is a kind of can the wet dust-free chalk write of wet rubbing on blackboard and smooth glass |
| CN115505297A (en) * | 2021-06-23 | 2022-12-23 | 滁州雄鹰笔墨科技有限公司 | Chalk for enamel blackboard and manufacturing method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101033354B (en) * | 2007-04-10 | 2010-09-15 | 上海乐美文具有限公司 | Water-based multipurpose painting pen |
| KR100928767B1 (en) * | 2007-09-10 | 2009-11-25 | 김민자 | Watercolor chalk combined with watercolor chalk and method for producing same |
| CN101705034B (en) * | 2009-11-25 | 2011-09-28 | 东莞市琍星实业有限公司 | Water-soluble dustfree chalks |
| CN101831218B (en) * | 2010-04-16 | 2012-02-29 | 金松 | Environment-friendly dustless biochemical chalk and making method thereof |
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- 2011-06-16 CN CN 201110161722 patent/CN102226050B/en not_active Expired - Fee Related
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