CN107163688B - A kind of preparation method and products thereof of erasable color pencil lead - Google Patents
A kind of preparation method and products thereof of erasable color pencil lead Download PDFInfo
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- CN107163688B CN107163688B CN201710454263.3A CN201710454263A CN107163688B CN 107163688 B CN107163688 B CN 107163688B CN 201710454263 A CN201710454263 A CN 201710454263A CN 107163688 B CN107163688 B CN 107163688B
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- pencil lead
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- core
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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 a kind of preparation methods and products thereof of erasable color pencil lead.The described method includes: each raw material after weighing mixes in high-speed mixer or low-speed mixer；It is ground through three-roll grinder, obtains finely dispersed color pencil lead material；Material obtains color pencil lead by squeezing core equipment after grinding；Using core drying, core drying temperature is 45 to 65 DEG C, the time 36 to 72 hours；Lead for retractable pencil after drying is put into 100-120 DEG C of grease oil immersion 1-3 hours, carries out surface de-oiling to get the erasable color pencil lead is arrived.The method that the present invention uses immersion oil rouge after drying, compare the mode that wax, grease are mixed into advance in material and forms, dry, product density is high, flexural strength is high, core point stress improves 1.5 times or more, and grease is more evenly distributed in color core, it is fine and smooth, uniform, beautiful in colour that coloring can be reached, with common 4B or 6B rubber and erasable effect.
Description
Technical field
The present invention relates to a kind of preparation method of color pencil lead, in particular to a kind of preparation method of erasable color pencil lead.
The invention belongs to cultural goods technical fields.
Background technique
Main method currently used for preparing color pencil lead be by pigment powder, adhesive, constitution raw material (such as talcum powder),
Water, grease and wax etc. carry out extrusion forming, drying, finally obtain color pencil lead after mixing.The disadvantages of this method is institute
The lead for retractable pencil product density being prepared is low, and flexural strength is low, therefore frangibility, is not easy to paint.
In view of the above-mentioned problems, being in the prior art the invention proposes a kind of new method for preparing color pencil lead
On the basis of, by changing the adding manner of grease, so that a kind of novel colored pen core be prepared, which has density
Advantage high, flexural strength is high, coloring is fine and smooth, uniform, beautiful in colour, while also there is erasable effect.
Summary of the invention
The technical problem to be solved by the present invention is to overcome existing pen core frangibility, be not easy the problems such as painting, one kind is provided
The novel preparation method for being used to prepare erasable color pencil lead.
In order to achieve the above object, present invention employs following technological means:
A kind of preparation method of erasable color pencil lead of the invention comprising following steps:
A, each raw material: pigment powder 10-12 parts by weight, adhesive 10-12 parts by weight, titanium dioxide is weighed according to following parts by weight
10-12 parts by weight, talcum powder 62-70 parts by weight and water 30-50 parts by weight；
B, each raw material after weighing mixes in high-speed mixer or low-speed mixer；
C, mixed material is ground through three-roll grinder, obtains finely dispersed color pencil lead material；
D, the color pencil lead material after grinding in step c is obtained into color pencil lead by squeezing core equipment；
E, it is handled using core drying, core drying temperature is 45 to 65 DEG C, the time 36 to 72 hours；
F, the lead for retractable pencil after drying is put into 100-120 DEG C of grease oil immersion 1-3 hours, carries out surface de-oiling to get institute is arrived
The erasable color pencil lead stated.
In the present invention, it is preferred to, each raw material: 11 parts by weight of pigment powder, 11 weight of adhesive is weighed according to following parts by weight
Measure part, 40 parts by weight of 11 parts by weight of titanium dioxide, 66 parts by weight of talcum powder and water.
In the present invention, it is preferred to, in step a, the adhesive is hydroxypropyl methyl cellulose.
In the present invention, it is preferred to, in step c, the three-roll grinder includes horizontal three-roll grinder, tilting three roller
Grinder and vertical three-roll grinder.
In the present invention, it is preferred to, in step d, the crowded core equipment is hydraulic press or thrashing machine, the compacting of hydraulic press
Pressure is 30~60MPa, and the number of hammering is at least 30 times.
In the present invention, it is preferred to, in step f, the grease is by microwax, paraffin and salad oil according to mass ratio
It is mixed for 1-3:1-3:1-3.It is furthermore preferred that the grease is according to mass ratio by microwax, paraffin and salad oil
1:1:1 is mixed.
Further, the invention also provides the erasable color pencil leads that preparation method as described above is prepared.
Compared to the prior art, the beneficial effects of the present invention are:
Using the technology mode of immersion oil rouge after drying, the micropore formed after moisture content drying, then by grease in heated condition
Lower filling is entered, and compare the mode that wax, grease are mixed into advance in material and forms, dry, the product density of new formula, technique
It is high, flexural strength is high, core point stress improves 1.5 times or more, and grease is more evenly distributed in color core, can reach coloring it is fine and smooth,
Uniformly, beautiful in colour, with common 4B or 6B rubber and erasable effect.
Detailed description of the invention
Fig. 1 is the electron-microscope scanning result for the pen core being prepared according to commonsense method；
Fig. 2 is the electron-microscope scanning result for the pen core being prepared according to 1 method of the embodiment of the present invention.
Specific embodiment
The invention will now be further described with reference to specific embodiments, the advantages and features of the present invention will be with description and
It is apparent.But examples are merely exemplary for these, and it is not intended to limit the scope of the present invention in any way.Those skilled in the art
Member it should be understood that without departing from the spirit and scope of the invention can details to technical solution of the present invention and form into
Row modifications or substitutions, but these modifications and replacement are fallen within the protection scope of the present invention.
A kind of preparation of erasable color pencil lead of embodiment 1
A, each raw material: 11 parts by weight of pigment scarlet powder, 11 parts by weight of adhesive, 11 weight of titanium dioxide is weighed according to following parts by weight
Part, 40 parts by weight of 66 parts by weight of talcum powder and water；
B, each raw material after then weighing mixes in high-speed mixer；
C, mixed material is ground through horizontal three-roll grinder, obtains finely dispersed color pencil lead material；
D, the color pencil lead material after grinding in step c is then obtained into color pencil lead by hydraulic press, wherein hydraulic press
Pressing pressure be 50MPa；
E, it is handled using core drying, core drying temperature is 60 DEG C, the time 48 hours；
F, the lead for retractable pencil after drying 110 DEG C are put into be mixed to get by microwax, paraffin, salad oil according to weight ratio 1:1:1
Grease in oil immersion 2 hours, carry out surface de-oiling to get arrive the erasable color pencil lead.
A kind of preparation of erasable color pencil lead of embodiment 2
A, each raw material: 10 parts by weight of forever solid orange RN, 10 weight of hydroxypropyl methyl cellulose is weighed according to following parts by weight
Part, 45 parts by weight of 12 parts by weight of titanium dioxide, 70 parts by weight of talcum powder and water；
B, each raw material after then weighing mixes in high-speed mixer；
C, mixed material is ground through tilting three-roll grinder, obtains finely dispersed color pencil lead material；
D, the color pencil lead material after grinding in step c is then obtained into color pencil lead by thrashing machine, wherein hammering
Number is 50 times；
E, it is handled using core drying, core drying temperature is 65 DEG C, the time 36 hours；
F, the lead for retractable pencil after drying 100 DEG C are put into be mixed to get by microwax, paraffin, salad oil according to weight ratio 1:1:2
Grease in oil immersion 2.5 hours, carry out surface de-oiling to get arrive the erasable color pencil lead.
A kind of preparation of erasable color pencil lead of embodiment 3
A, weigh each raw material according to following parts by weight: reddish blue 12 parts by weight of color lake, 12 parts by weight of hydroxypropyl methyl cellulose,
35 parts by weight of 10 parts by weight of titanium dioxide, 62 parts by weight of talcum powder and water；
B, each raw material after then weighing mixes in high-speed mixer；
C, mixed material is ground through vertical three-roll grinder, obtains finely dispersed color pencil lead material；
D, the color pencil lead material after grinding in step c is then obtained into color pencil lead by hydraulic press, wherein hydraulic press
Pressing pressure be 60MPa；
E, it is handled using core drying, core drying temperature is 55 DEG C, the time 72 hours；
F, the lead for retractable pencil after drying 120 DEG C are put into be mixed to get by microwax, paraffin, salad oil according to weight ratio 2:1:2
Grease in oil immersion 1.5 hours, carry out surface de-oiling to get arrive the erasable color pencil lead.
A kind of preparation of the common color lead for retractable pencil of comparative example 1
A, each raw material: 12 parts by weight of pigment scarlet powder, 11 parts by weight of hydroxypropyl methyl cellulose, titanium is weighed according to following parts by weight
10 parts by weight of white powder, 35 parts by weight of 65 parts by weight of talcum powder, 30 parts by weight of salad oil and water；
B, each raw material after then weighing mixes in high-speed mixer；
C, mixed material is ground through horizontal three-roll grinder, obtains finely dispersed color pencil lead material；
D, the color pencil lead material after grinding in step c is then obtained into color pencil lead by hydraulic press, wherein hydraulic press
Pressing pressure be 50MPa；
E, handled using core drying, core drying temperature be 50 DEG C, 48 hours time to get.
The performance comparison of comparative example 2 pen core of the present invention and common pen core
1, tested products
Experimental group: colored pen core of the invention is prepared according to 1 method of the embodiment of the present invention
Control group: common color lead for retractable pencil is prepared according to the method for comparative example 1
2, the electron-microscope scanning and specific area measuring of pen core
Control group pen core is placed under scanning electron microscope with experimental group pen core and is observed, and carries out comparing table using nitrogen adsorption method
Area estimation, scanning electron microscope result difference is as depicted in figs. 1 and 2, can be seen that from Fig. 1 and Fig. 2 result and implements according to the present invention
The surface pore for the pen core that 1 method of example is prepared significantly reduces；Determination of Specific Surface Area the result shows that common color lead for retractable pencil ratio table
Area is 3.226, and the specific surface area for the pen core being prepared according to 1 method of the embodiment of the present invention is 1.923, is reduced
40%, the pen core for illustrating that common pen core and the present invention are prepared has significant difference in compactness, uniformity aspect, and then says
Pen core significant increase core point stress-bearing capability is prepared in the clear present invention, is not easily broken.
3, core point stress measures
Control group pen core and the core point stress of experimental group pen core are measured using the standard method of GB/T26704-11,
Measurement result shows that the core point stress for the pen core compared to common pen core, being prepared according to 1 method of the embodiment of the present invention improves
1.5 times or more.
Claims (2)
1. a kind of preparation method of erasable color pencil lead, which comprises the following steps:
A, each raw material: 11 parts by weight of pigment scarlet powder, 11 parts by weight of hydroxypropyl methyl cellulose, titanium dioxide is weighed according to following parts by weight
40 parts by weight of 11 parts by weight, 66 parts by weight of talcum powder and water；
B, each raw material after then weighing mixes in high-speed mixer；
C, mixed material is ground through horizontal three-roll grinder, obtains finely dispersed color pencil lead material；
D, the color pencil lead material after grinding in step c is then obtained into color pencil lead by hydraulic press, wherein the pressure of hydraulic press
Pressing pressure is 50MPa；
E, it is handled using core drying, core drying temperature is 60 DEG C, the time 48 hours；
F, the lead for retractable pencil after drying is put into 110 DEG C of oil being mixed to get by microwax, paraffin, salad oil according to weight ratio 1:1:1
Oil immersion 2 hours in rouge carry out surface de-oiling to get the erasable color pencil lead is arrived.
2. the erasable color pencil lead that preparation method described in accordance with the claim 1 is prepared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710454263.3A CN107163688B (en) | 2017-06-16 | 2017-06-16 | A kind of preparation method and products thereof of erasable color pencil lead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710454263.3A CN107163688B (en) | 2017-06-16 | 2017-06-16 | A kind of preparation method and products thereof of erasable color pencil lead |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107163688A CN107163688A (en) | 2017-09-15 |
| CN107163688B true CN107163688B (en) | 2019-03-19 |
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| CN201710454263.3A Active CN107163688B (en) | 2017-06-16 | 2017-06-16 | A kind of preparation method and products thereof of erasable color pencil lead |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021037392A1 (en) * | 2019-08-27 | 2021-03-04 | Staedtler Mars Gmbh & Co. Kg | Core for writing, drawing and/or painting implements and method for the production thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2641810B2 (en) * | 1991-05-02 | 1997-08-20 | 三菱鉛筆株式会社 | Non-fired colored pencil lead and its manufacturing method |
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2017
- 2017-06-16 CN CN201710454263.3A patent/CN107163688B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021037392A1 (en) * | 2019-08-27 | 2021-03-04 | Staedtler Mars Gmbh & Co. Kg | Core for writing, drawing and/or painting implements and method for the production thereof |
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| Publication number | Publication date |
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| CN107163688A (en) | 2017-09-15 |
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