CN103087590A - Conical coal pitch and carbon black mixed pencil core and preparation method thereof - Google Patents
Conical coal pitch and carbon black mixed pencil core and preparation method thereof Download PDFInfo
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- CN103087590A CN103087590A CN 201110338171 CN201110338171A CN103087590A CN 103087590 A CN103087590 A CN 103087590A CN 201110338171 CN201110338171 CN 201110338171 CN 201110338171 A CN201110338171 A CN 201110338171A CN 103087590 A CN103087590 A CN 103087590A
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Abstract
The invention relates to the technical field of stationeries, and especially relates to a conical coal pitch and carbon black mixed pencil core and a preparation method thereof. The pencil core provided by the invention is prepared from the raw materials of, by weight, 15-35 parts of graphite, 15-45 parts of coal pitch; 5-55 parts of carbon black, 5-15 parts of adhesive, and 5-15 parts of paraffin. According to the pencil core provided by the invention, coal pitch and carbon black are adopted as raw materials, such that graphite resources can be greatly saved. The pencil core provided by the invention has a conical structure, and an external coated penholder can adopt a paper penholder which is prepared by winding waste paper, or a wooden penholder. Therefore, pencil core resource is saved, environment-friendly and energy-saving effects are achieved, and wood resource is greatly saved. The pencil core provided by the invention has the substantial advantages of reasonable design, simple structure, simple and convenient application, and high efficiency. The pencil core is especially suitable to be used by primary and secondary students. No sharpening is needed when the pencil is used for a first time. The application range is wide.
Description
Technical field
The present invention relates to the technical field of cultural goods, relate in particular to taper coal-tar pitch and carbon black mixing lead for retractable pencil and preparation technology thereof.
Background technology
At present, the pen core of the pencil that people commonly use is all that diameter is identical, often pencil point section must be fined away when people use, then could normally use, lead in the pencil tip can slattern much like this, just exists the problem of the wasting of resources when producing in enormous quantities; And by the part lead for retractable pencil powder that reamed also in various degree the environment to our work and life.
In addition, to being in great demand of pencil, so the pencil-lead manufacturer of China various places also can't satisfy the existing market requirement far away due to the domestic and international market.Lead for retractable pencil making raw material ratio in the past is more single, all as tackiness agent with bentonite clay, make after processing through various complete processings with graphite is common again, exist nib easily broken, and write the rear paste of easily smearing, make and write paper or hand is easily polluted by font, be infected with grey black, namely unhygienic, also not environmental protection.
Summary of the invention
The present invention is directed to the technical problem that exists in above-mentioned prior art, a kind of taper coal-tar pitch and carbon black mixing lead for retractable pencil and preparation technology thereof are provided, it has environmental protection, economizes on resources and distinguishing feature easy to use.
The present invention realizes that the technical scheme of the purpose of inventing is as follows:
Taper coal-tar pitch and carbon black mixing lead for retractable pencil, it is to be formed than preparation by the following raw materials in parts by weight number: graphite 15-35 part; Coal-tar pitch 15-45 part; Carbon black 5-55 part; Tackiness agent 5-15 part; Paraffin 5-15 part.
Described taper coal-tar pitch and carbon black mixing lead for retractable pencil are to be formed than preparation by the following raw materials in parts by weight number: 15 parts, graphite; Coal-tar pitch 15; 55 parts of carbon blacks; 10 parts, tackiness agent; 5 parts, paraffin.
Described taper coal-tar pitch and carbon black mixing lead for retractable pencil are to be formed than preparation by the following raw materials in parts by weight number: 25 parts, graphite; 40 parts of coal-tar pitch; 10 parts of carbon blacks; 5 parts, tackiness agent; 15 parts, paraffin.
Described taper coal-tar pitch and carbon black mixing lead for retractable pencil are to be formed than preparation by the following raw materials in parts by weight number: 35 parts, graphite; 20 parts of coal-tar pitch; 20 parts of carbon blacks; 15 parts, tackiness agent; 10 parts, paraffin.
The preparation technology of described taper coal-tar pitch and carbon black mixing lead for retractable pencil is: get graphite, coal-tar pitch and paraffin by above-mentioned ratio of weight and number, mix, pulverize and grind to form 60-200 purpose particulate state fine powder; Mix again extrusion molding with carbon black and tackiness agent; Carry out the high temperature roast again at the temperature of 500 ℃-1500 ℃, process through carrying out oil immersion after roast, clean, cut at last one side and get final product for the refill of taper.
Carbon black is a kind of decolorizing carbon, see it is a kind of light, loose and superfine black powder from appearance, specific surface area is very large, and scope from 10-3000m2/g, is organism: Sweet natural gas, heavy oil, fuel wet goods under the condition of lack of air through incomplete combustion or decomposes and product.Can make black dyes, for the manufacture of ink stick, printing ink, paint etc., also be used for cooking the strengthening agent of rubber.Carbon black is different by purposes, usually is divided into pigment carbon black, rubber grade carbon black, conductive carbon black and special-purpose carbon black.Pigment, is divided three classes in the world according to the tinting strength of carbon black usually with carbon black, i.e. high-carbon black pigment, middle colour carbon black and low colour carbon black.This classification represents with three English alphabets usually, the tinting strength of the first two letter representation carbon black, and the last letter represents production method.The raw material of producing the pigment carbon black is petroleum products and pitch coke oil production.Form by at high temperature incomplete combustion or pyrolysis of hydro carbons.
The coal-tar pitch reason is at room temperature black fragility block, and is glossy, belongs to the secondary flammable solid.Coal-tar pitch plasticity differential temperature degree poor stability, winter is crisp, and summer is softening, and is aging fast.Main application is to be applied to make coating, electrode, pitch coke, tar felt etc., also can make the raw material of fuel and pitch carbon black.Coal-tar pitch is the pitch of being processed into through distillation again by the coal tar that the dry distillation of coal obtains.Coal-tar pitch is compared with petroleum pitch, and following difference is arranged on technological property: temperature stability is lower, and better with the adhesivity of mineral aggregate, resistance to weather is relatively poor.
The invention provides a kind of making method of taper coal-tar pitch and carbon black mixing lead for retractable pencil of energy-conserving and environment-protective, described pen core is compared with traditional pencil-lead has notable difference, lead for retractable pencil of the present invention therefore can also a large amount of saving graphite owing to using in a large number coal-tar pitch and carbon blacks as raw material.Lead for retractable pencil of the present invention is tapered structure, papery penholder or wood pen holder that the outside penholder that coats can paper using be wound into all can, the raw material of the penholder that paper roll used is coiled into can all can with various disregard message paper or waste and old paper, so namely can be when saving lead for retractable pencil, play again the effect of the environmental protection and saving energy, also saved in large quantities simultaneously timber.The pencil of making of pencil-lead of the present invention is from the appearance the same with existing pencil, but internal structure is improved, has reasonable in design, simple in structure, convenient to use, efficient distinguishing feature, especially being fit to students in middle and primary schools uses, the first use need not to cut and can use, and complete processing is simple, is easy to produce, invest little, and use range distinguishing feature widely.
Embodiment
The present invention is further detailed explanation below in conjunction with specific embodiment.
Embodiment 1:
The present invention is a kind of taper coal-tar pitch and carbon black mixing lead for retractable pencil, and it is to be formed than preparation by the following raw materials in parts by weight number: 15 parts, graphite; Coal-tar pitch 15; 55 parts of carbon blacks; 10 parts, tackiness agent; 5 parts, paraffin.
Preparation technology of the present invention is: get 5 kilograms, 150 kilograms, graphite, 150 kilograms of coal-tar pitch and paraffin by above-mentioned ratio of weight and number, after mixing, pulverize and grind to form 60 purpose particulate state fine powders; Mix again extrusion molding with 550 kilograms of carbon blacks and 10 kilograms of tackiness agents; Carry out again the high temperature roast at the temperature of 500 ℃, process through carrying out oil immersion after roast, clean, cut at last one side and get final product for the refill of taper.
The outside penholder that coats of the pen core that the present invention is prepared to be formed can select papery penholder or the wood pen holder that paper roll is coiled into all can implement, and simultaneously outside penholder is cut into cone-shaped that lead for retractable pencil is corresponding shape to get final product.The raw material of the penholder that selected paper roll is coiled into can with various disregard message paper or waste and old paper all can, can also save in a large number timber resources like this.
Embodiment 2:
The present invention is a kind of taper coal-tar pitch and carbon black mixing lead for retractable pencil, and it is to be formed than preparation by the following raw materials in parts by weight number: 25 parts, graphite; 40 parts of coal-tar pitch; 10 parts of carbon blacks; 5 parts, tackiness agent; 15 parts, paraffin.
Preparation technology of the present invention is: get 150 kilograms, 250 kilograms, graphite, 400 kilograms of coal-tar pitch and paraffin by above-mentioned ratio of weight and number, mix, pulverize and grind to form 100 purpose particulate state fine powders; Mix again extrusion molding with 50 kilograms, tackiness agent with 100 kilograms of carbon blacks; Carry out again the high temperature roast at the temperature of 1000 ℃, process through carrying out oil immersion after roast, clean, cut at last one side and get final product for the refill of taper.
Embodiment 3:
The present invention is a kind of taper coal-tar pitch and carbon black mixing lead for retractable pencil, and it is to be formed than preparation by the following raw materials in parts by weight number: 35 parts, graphite; 20 parts of coal-tar pitch; 20 parts of carbon blacks; 15 parts, tackiness agent; 10 parts, paraffin.
Preparation technology of the present invention is: get 100 kilograms, 350 kilograms, graphite, 200 kilograms of coal-tar pitch and paraffin by above-mentioned ratio of weight and number, mix, pulverize and grind to form 00 purpose particulate state fine powder; Mix again extrusion molding with 150 kilograms, tackiness agent with 200 kilograms of carbon blacks; Carry out again the high temperature roast at the temperature of 1500 ℃, process through carrying out oil immersion after roast, clean, cut at last one side and get final product for the refill of taper.
Claims (6)
1. taper coal-tar pitch and carbon black mixing lead for retractable pencil is characterized in that: it is to be formed than preparation by the following raw materials in parts by weight number:
Graphite 15-35 part;
Coal-tar pitch 15-45 part;
Carbon black 5-55 part;
Tackiness agent 5-15 part;
Paraffin 5-15 part.
2. taper coal-tar pitch according to claim 1 and carbon black mixing lead for retractable pencil is characterized in that: it is to be formed than preparation by the following raw materials in parts by weight number:
15 parts, graphite;
15 parts of coal-tar pitch;
55 parts of carbon blacks;
10 parts, tackiness agent;
5 parts, paraffin.
3. taper coal-tar pitch according to claim 1 and carbon black mixing lead for retractable pencil is characterized in that: it is to be formed than preparation by the following raw materials in parts by weight number:
25 parts, graphite;
40 parts of coal-tar pitch;
10 parts of carbon blacks;
5 parts, tackiness agent;
15 parts, paraffin.
4. taper coal-tar pitch according to claim 1 and carbon black mixing lead for retractable pencil is characterized in that: it is to be formed than preparation by the following raw materials in parts by weight number:
35 parts, graphite;
20 parts of coal-tar pitch;
20 parts of carbon blacks;
15 parts, tackiness agent;
10 parts, paraffin.
5. taper coal-tar pitch according to claim 1 and carbon black mixing lead for retractable pencil, it is characterized in that: described tackiness agent is bentonite clay.
6. the preparation technology of taper coal-tar pitch according to claim 1 and carbon black mixing lead for retractable pencil is characterized in that:
Get graphite, coal-tar pitch and paraffin by ratio of weight and number as claimed in claim 1, mix, pulverize and grind to form 60-200 purpose particulate state fine powder; Mix again extrusion molding with carbon black and tackiness agent; Carry out the high temperature roast again at the temperature of 500 ℃-1500 ℃, process through carrying out oil immersion after roast, clean, cut at last one side and get final product for the refill of taper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110338171 CN103087590A (en) | 2011-11-01 | 2011-11-01 | Conical coal pitch and carbon black mixed pencil core and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110338171 CN103087590A (en) | 2011-11-01 | 2011-11-01 | Conical coal pitch and carbon black mixed pencil core and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103087590A true CN103087590A (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110338171 Pending CN103087590A (en) | 2011-11-01 | 2011-11-01 | Conical coal pitch and carbon black mixed pencil core and preparation method thereof |
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| CN (1) | CN103087590A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104725937A (en) * | 2015-03-11 | 2015-06-24 | 南阳理工学院 | Charcoal pencil for art painting and making method of charcoal pencil |
| CN107365154A (en) * | 2017-08-28 | 2017-11-21 | 程安娜 | Life carbon material process is manufactured with the machining chips of graphitization carbon |
| CN110527358A (en) * | 2019-08-19 | 2019-12-03 | 上海佳利笔业文具有限公司 | A kind of composite material pen core and preparation method thereof |
-
2011
- 2011-11-01 CN CN 201110338171 patent/CN103087590A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104725937A (en) * | 2015-03-11 | 2015-06-24 | 南阳理工学院 | Charcoal pencil for art painting and making method of charcoal pencil |
| CN104725937B (en) * | 2015-03-11 | 2016-03-30 | 南阳理工学院 | A kind of art painting charcoal pencil and preparation method |
| CN107365154A (en) * | 2017-08-28 | 2017-11-21 | 程安娜 | Life carbon material process is manufactured with the machining chips of graphitization carbon |
| CN110527358A (en) * | 2019-08-19 | 2019-12-03 | 上海佳利笔业文具有限公司 | A kind of composite material pen core and preparation method thereof |
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Application publication date: 20130508 |