CN105419489A - Green environment-friendly dust-free chalk and preparation process thereof - Google Patents
Green environment-friendly dust-free chalk and preparation process thereof Download PDFInfo
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- CN105419489A CN105419489A CN201510919174.2A CN201510919174A CN105419489A CN 105419489 A CN105419489 A CN 105419489A CN 201510919174 A CN201510919174 A CN 201510919174A CN 105419489 A CN105419489 A CN 105419489A
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- dust
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D13/00—Pencil-leads; Crayon compositions; Chalk compositions
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The invention discloses green environment-friendly dust-free chalk which comprises, by mass parts, 10-20 parts of dust-proof agent, 5-10 parts of higher aliphatic alcohol sulphate surfactant, 3-5 parts of medical stone powder, 6-10 parts of talc, 6-10 parts of flue gas desulfurization gypsum powder, 15-23 parts of titanium dioxide, 1-2 parts of processing agent and 15-25 parts of water. The invention further discloses a process for preparing the green environment-friendly dust-free chalk. According to the green environment-friendly dust-free chalk and the preparation process thereof, the green environment-friendly raw materials are adopted, and the obtained chalk has the advantages of generating no dust and being good in writing performance and easy to erase.
Description
Technical field
The present invention relates to stationery field, be specifically related to a kind of dust-free chalk and preparation technology thereof of environmental protection.
Background technology
Chalk is educational aid conventional in school, simultaneously the also frequent stationery as family expenses or office, also as the study toy of child.Now, the chalk of domestic use mainly comprises common chalk and dust-free chalk two kinds, and its main component is calcium sulfate (gypsum) and calcium carbonate (Wingdale), or containing a small amount of calcium oxide.Dust-free chalk belongs to the improvement product of common chalk, is intended to eliminate chalk dust and pollutes.Existing dust-free chalk is add polyalcohols in common chalk or oil substances makes binding agent, then adds the filler of larger specific gravity, as clay, cement, muddy limestone etc., the proportion of chalk dust and volume can be made so all to increase, thus not easily disperse.But existing dust-free chalk mostly is micronic dust chalk, namely often can produce the micronic dust not easily discovered in use, and then harm is produced to the health of user and people around.
Summary of the invention
Not enough for prior art, the invention provides and a kind ofly do not produce dust-free chalk and the preparation technology thereof that dust, writing property are good, be easy to the environmental protection of wiping.
The technical scheme that the present invention solves the problems of the technologies described above employing is: a kind of dust-free chalk of environmental protection, it is made up of following raw material: dust-proofing agent, high fatty alcohol sulfuric acid ester tensio-active agent, medical stone powder, talcum powder, desulfurization gypsum powder, titanium dioxide, processing aid and water, and the mass fraction of described raw material is: dust-proofing agent 10 ~ 20 parts, 5 ~ 10 parts, high fatty alcohol sulfuric acid ester tensio-active agent, medical stone powder 3 ~ 5 powder, talcum powder 6 ~ 10 parts, desulfurization gypsum powder 6 ~ 10 parts, titanium dioxide 15 ~ 23 parts, processing aid 1 ~ 2 part, 15 ~ 25 parts, water;
Described dust-proofing agent is the mixture of wetting Agent for Printing Inks and sulfonic acid type aqueous polyurethane, described wetting Agent for Printing Inks be one in glycerine, polysorbate or its combine, the mass ratio of described wetting Agent for Printing Inks and sulfonic acid type aqueous polyurethane is 1 ~ 3:1.
Further, described high fatty alcohol sulfuric acid ester tensio-active agent is for for sodium laurylsulfate, and the emulsification of described high fatty alcohol sulfuric acid ester tensio-active agent, wetting, softening is very strong, and more stable, more resistance to calcium, magnesium salts.
Further, the granularity of described medical stone powder is 150 ~ 600 orders.
Further, described talcous granularity is 200 ~ 600 orders.
Further, described processing aid is the mixture of oleyl palmitic amide and sodium polyacrylate, and its mass ratio is 1 ~ 2:1; Described oleyl palmitic amide plays smooth, anti-adhesion, fouling resistance, delays chalk raw material sedimentation and caking in the process making chalk, helps its redispersion; Described sodium polyacrylate can play the effect helping the dispersion of chalk material system in the course of processing, regulate granularity, resist sedimentation again.
A preparation technology for the dust-free chalk of environmental protection, comprises the following steps:
(1) raw material is on the waiting list by described mass fraction;
(2) medical stone powder in the raw material be on the waiting list, talcum powder, desulfurization gypsum powder, titanium dioxide and water are placed in stirrer to stir, obtain premix base;
(3) processing aid is joined in the premix base of step 2 gained, mixes, mixed resin;
(4) dust-proofing agent and high fatty alcohol sulfuric acid ester tensio-active agent are placed in diverting device emulsification 10 ~ 25min, then add in the mixed resin of step 3 gained, be uniformly mixed to uniform state, obtain compound;
(5) by the compound of step 4 gained adopt reduction unit roll material, after pressure forming, cutting, oven dry both chalk of the present invention.
Compared with prior art, the advantage that the present invention possesses: dust-free chalk and the preparation technology thereof of a kind of environmental protection provided by the invention adopt environmental protection raw material, gained chalk have do not produce dust, writing property good, be easy to the advantage of wiping; Wherein the viscosifying power of the aqueous polyurethane of sulfonic acid type described in dust-proofing agent is strong, modulus is high, combine with glycerine, polysorbate etc. and can have stronger surface bonding ability, during less with titanium dioxide equigranular, interfacial area is larger mix particles, there is very large interaction in the face on the two boundary, there is good adhesive property, effectively prevent chalk from playing dirt when writing or scrawle, and glycerine, polysorbate have good moisture retention, ensure write or scrawle after font after extended periods wiping also do not play dirt; Anti-settling agent contributes to kindliness when improving chalk-writing or scrawle simultaneously; Desulfurization gypsum powder is compared with other terra alba, depart from the sulphur trioxide that in terra alba, content is maximum, have renewable, granularity is little, stable components, detrimental impurity content are few, purity high, the base-material constituting dust-free chalk is mixed, exquisiteness sense when improve chalk-writing or scrawle with the medical stone powder of high-quality exquisiteness, talcum powder, titanium dioxide.
Embodiment
Below in conjunction with specific embodiment, the present invention is described further.
Embodiment 1: a kind of dust-free chalk of environmental protection, it is made up of following raw material: dust-proofing agent, high fatty alcohol sulfuric acid ester tensio-active agent, medical stone powder, talcum powder, desulfurization gypsum powder, titanium dioxide, processing aid and water, and the mass fraction of described raw material is: dust-proofing agent 15 parts, 8 parts, high fatty alcohol sulfuric acid ester tensio-active agent, medical stone powder 4 powder, talcum powder 8 parts, desulfurization gypsum powder 8 parts, titanium dioxide 20 parts, processing aid 2 parts, 20 parts, water;
Described dust-proofing agent is the mixture of wetting Agent for Printing Inks and sulfonic acid type aqueous polyurethane, and described wetting Agent for Printing Inks is the mixture of glycerine and polysorbate, and the mass ratio of described wetting Agent for Printing Inks and sulfonic acid type aqueous polyurethane is 2:1.
Further, described high fatty alcohol sulfuric acid ester tensio-active agent is for being sodium laurylsulfate; The granularity of described medical stone powder is 300 orders; Described talcous granularity is 400 orders; Described processing aid is the mixture of oleyl palmitic amide and sodium polyacrylate, and its mass ratio is 2:1.
A preparation technology for the dust-free chalk of environmental protection, comprises the following steps:
(1) raw material is on the waiting list by described mass fraction;
(2) medical stone powder in the raw material be on the waiting list, talcum powder, desulfurization gypsum powder, titanium dioxide and water are placed in stirrer to stir, obtain premix base;
(3) processing aid is joined in the premix base of step 2 gained, mixes, mixed resin;
(4) dust-proofing agent and high fatty alcohol sulfuric acid ester tensio-active agent are placed in diverting device emulsification 10 ~ 25min, then add in the mixed resin of step 3 gained, be uniformly mixed to uniform state, obtain compound;
(5) by the compound of step 4 gained adopt reduction unit roll material, after pressure forming, cutting, oven dry both chalk of the present invention.
The preparation technology of the dust-free chalk of a kind of environmental protection described in following embodiment, the same the present embodiment of its concrete steps.
Embodiment 2: a kind of dust-free chalk of environmental protection, it comprises the raw material of following mass fraction: dust-proofing agent 10 parts, 5 parts, high fatty alcohol sulfuric acid ester tensio-active agent, medical stone powder 3 powder, talcum powder 6 parts, desulfurization gypsum powder 6 parts, titanium dioxide 15 parts, processing aid 1 part, 15 parts, water; Wherein, described dust-proofing agent is the mixture of wetting Agent for Printing Inks and sulfonic acid type aqueous polyurethane, and described wetting Agent for Printing Inks is glycerine, and the mass ratio of described wetting Agent for Printing Inks and sulfonic acid type aqueous polyurethane is 3:1.
Further, described high fatty alcohol sulfuric acid ester tensio-active agent is for being sodium laurylsulfate; The granularity of described medical stone powder is 150 orders; Described talcous granularity is 200 orders; Described processing aid is the mixture of oleyl palmitic amide and sodium polyacrylate, and its mass ratio is 1:1.
Embodiment 3: a kind of dust-free chalk of environmental protection, it comprises the raw material of following mass fraction: dust-proofing agent 20 parts, 10 parts, high fatty alcohol sulfuric acid ester tensio-active agent, medical stone powder 5 powder, talcum powder 10 parts, desulfurization gypsum powder 10 parts, titanium dioxide 23 parts, processing aid 2 parts, 25 parts, water; Wherein, described dust-proofing agent is the mixture of wetting Agent for Printing Inks and sulfonic acid type aqueous polyurethane, and described wetting Agent for Printing Inks is polysorbate, and the mass ratio of described wetting Agent for Printing Inks and sulfonic acid type aqueous polyurethane is 1:1.
Further, described high fatty alcohol sulfuric acid ester tensio-active agent is for being sodium laurylsulfate; The granularity of described medical stone powder is 600 orders; Described talcous granularity is 600 orders; Described processing aid is the mixture of oleyl palmitic amide and sodium polyacrylate, and its mass ratio is 2:1.
Embodiment 4: a kind of dust-free chalk of environmental protection, it comprises the raw material of following mass fraction: dust-proofing agent 10 parts, 10 parts, high fatty alcohol sulfuric acid ester tensio-active agent, medical stone powder 3 powder, talcum powder 8 parts, desulfurization gypsum powder 7 parts, titanium dioxide 15 parts, processing aid 2 parts, 20 parts, water; Wherein, described dust-proofing agent is the mixture of wetting Agent for Printing Inks and sulfonic acid type aqueous polyurethane, and described wetting Agent for Printing Inks is glycerine, and the mass ratio of described wetting Agent for Printing Inks and sulfonic acid type aqueous polyurethane is 2:1.
Further, described high fatty alcohol sulfuric acid ester tensio-active agent is for being sodium laurylsulfate; The granularity of described medical stone powder is 500 orders; Described talcous granularity is 300 orders; Described processing aid is the mixture of oleyl palmitic amide and sodium polyacrylate, and its mass ratio is 1:1.
Embodiment 5: a kind of dust-free chalk of environmental protection, it comprises the raw material of following mass fraction: dust-proofing agent 15 parts, 6 parts, high fatty alcohol sulfuric acid ester tensio-active agent, medical stone powder 3 powder, talcum powder 9 parts, desulfurization gypsum powder 7 parts, titanium dioxide 17 parts, processing aid 1 part, 21 parts, water; Wherein, described dust-proofing agent is the mixture of wetting Agent for Printing Inks and sulfonic acid type aqueous polyurethane, and described wetting Agent for Printing Inks is the mixture of glycerine and polysorbate, and the mass ratio of described wetting Agent for Printing Inks and sulfonic acid type aqueous polyurethane is 2:1.
Further, described high fatty alcohol sulfuric acid ester tensio-active agent is for being sodium laurylsulfate; The granularity of described medical stone powder is 400 orders; Described talcous granularity is 400 orders; Described processing aid is the mixture of oleyl palmitic amide and sodium polyacrylate, and its mass ratio is 2:1.
The dust-free chalk of above-described embodiment 1 ~ 5 gained, through actual use test, writes with all to realize 100% during wiping dustless; All smooth or rough plate faces can be adapted to, comprise traditional blackboard, mould making sheet face, glass etc., and write excellent touch; The chalk made has good erasability, the sensation not having oil to glue when blackboard wiping and the cleaning that can keep blackboard; The raw material adopted is to the equal nonirritant of skin; Preparation technology is simple, production process environment-protecting clean.
Claims (6)
1. the dust-free chalk of an environmental protection, it is characterized in that, be made up of following raw material: dust-proofing agent, high fatty alcohol sulfuric acid ester tensio-active agent, medical stone powder, talcum powder, desulfurization gypsum powder, titanium dioxide, processing aid and water, the mass fraction of described raw material is: dust-proofing agent 10 ~ 20 parts, 5 ~ 10 parts, high fatty alcohol sulfuric acid ester tensio-active agent, medical stone powder 3 ~ 5 powder, talcum powder 6 ~ 10 parts, desulfurization gypsum powder 6 ~ 10 parts, titanium dioxide 15 ~ 23 parts, processing aid 1 ~ 2 part, 15 ~ 25 parts, water;
Described dust-proofing agent is the mixture of wetting Agent for Printing Inks and sulfonic acid type aqueous polyurethane, described wetting Agent for Printing Inks be one in glycerine, polysorbate or its combine, the mass ratio of described wetting Agent for Printing Inks and sulfonic acid type aqueous polyurethane is 1 ~ 3:1.
2. the dust-free chalk of a kind of environmental protection according to claim 1, is characterized in that: described high fatty alcohol sulfuric acid ester tensio-active agent is for being sodium laurylsulfate.
3. the dust-free chalk of a kind of environmental protection according to claim 1, is characterized in that: the granularity of described medical stone powder is 150 ~ 600 orders.
4. the dust-free chalk of a kind of environmental protection according to claim 1, is characterized in that: described talcous granularity is 200 ~ 600 orders.
5. the dust-free chalk of a kind of environmental protection according to claim 1, is characterized in that: described processing aid is the mixture of oleyl palmitic amide and sodium polyacrylate, and its mass ratio is 1 ~ 2:1.
6. the preparation technology of the dust-free chalk of the arbitrary described a kind of environmental protection of claim 1-5, is characterized in that, comprise the following steps:
(1) raw material is on the waiting list by described mass fraction;
(2) medical stone powder in the raw material be on the waiting list, talcum powder, desulfurization gypsum powder, titanium dioxide and water are placed in stirrer to stir, obtain premix base;
(3) processing aid is joined in the premix base of step 2 gained, mixes, mixed resin;
(4) dust-proofing agent and high fatty alcohol sulfuric acid ester tensio-active agent are placed in diverting device emulsification 10 ~ 25min, then add in the mixed resin of step 3 gained, be uniformly mixed to uniform state, obtain compound;
(5) by the compound of step 4 gained adopt reduction unit roll material, after pressure forming, cutting, oven dry both chalk of the present invention.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510919174.2A CN105419489B (en) | 2015-12-11 | 2015-12-11 | A kind of green dust-free chalk and its preparation technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510919174.2A CN105419489B (en) | 2015-12-11 | 2015-12-11 | A kind of green dust-free chalk and its preparation technology |
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| Publication Number | Publication Date |
|---|---|
| CN105419489A true CN105419489A (en) | 2016-03-23 |
| CN105419489B CN105419489B (en) | 2018-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510919174.2A Active CN105419489B (en) | 2015-12-11 | 2015-12-11 | A kind of green dust-free chalk and its preparation technology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106497234A (en) * | 2016-11-07 | 2017-03-15 | 李东峪 | A kind of environment-friendly type chalk and its manufacture method |
| CN107556823A (en) * | 2017-08-25 | 2018-01-09 | 刘建伟 | A kind of dust-free chalk to refresh the mind and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006152187A (en) * | 2004-11-30 | 2006-06-15 | Pentel Corp | Brilliant ink composition for marking pen |
| CN102757696A (en) * | 2012-05-04 | 2012-10-31 | 魏胜 | Dust-free chalk liquid and preparation method thereof |
| CN102850852A (en) * | 2012-09-11 | 2013-01-02 | 江苏正泰医药化工有限公司 | Dust-free chalk |
-
2015
- 2015-12-11 CN CN201510919174.2A patent/CN105419489B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006152187A (en) * | 2004-11-30 | 2006-06-15 | Pentel Corp | Brilliant ink composition for marking pen |
| CN102757696A (en) * | 2012-05-04 | 2012-10-31 | 魏胜 | Dust-free chalk liquid and preparation method thereof |
| CN102850852A (en) * | 2012-09-11 | 2013-01-02 | 江苏正泰医药化工有限公司 | Dust-free chalk |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106497234A (en) * | 2016-11-07 | 2017-03-15 | 李东峪 | A kind of environment-friendly type chalk and its manufacture method |
| CN107556823A (en) * | 2017-08-25 | 2018-01-09 | 刘建伟 | A kind of dust-free chalk to refresh the mind and preparation method thereof |
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| Publication number | Publication date |
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| CN105419489B (en) | 2018-01-30 |
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