CN102248838A - Method for manufacturing pencil by utilizing recyclable biomass residues - Google Patents
Method for manufacturing pencil by utilizing recyclable biomass residues Download PDFInfo
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- CN102248838A CN102248838A CN2011100831707A CN201110083170A CN102248838A CN 102248838 A CN102248838 A CN 102248838A CN 2011100831707 A CN2011100831707 A CN 2011100831707A CN 201110083170 A CN201110083170 A CN 201110083170A CN 102248838 A CN102248838 A CN 102248838A
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Abstract
The invention discloses a method for manufacturing a pencil by utilizing recyclable biomass residues. The method is characterized by comprising the following steps of: drying bagasse, and crushing the bagasse into bagasse powder with granularity of smaller than 20 meshes; and blending the dried bagasse powder and an isocyanate adhesive, hot pressing a mixture of the dried bagasse powder and the isocyanate adhesive, filling a cartridge of a pencil into the mixture and cold pressing to obtain the pencil. In the pencil manufactured by the method disclosed by the invention, the bagasse is instead of wood, domestic raw material resources are huge with low cost, and wood-similar natural landscapes exist interiorly; and the isocyanate is taken as an adhesive, thus the combination firmness of a holder of the pencil is high.
Description
Technical field
The present invention relates to the method that a kind of reproducible living beings residue prepares pencil, be specifically related to the method that a kind of bagasse prepares pencil, belong to the light industrial goods technical field.
Background technology
Characteristics such as bagasse is the discarded object of sugar industry, belongs to the renewable biomass resource, and quantity is big, and is cheap, and other has, and concentrate in the place of production, composition is single, do not need sorting process, quality controllable.China is the 3rd cane planting big country that is only second to Brazil and India, and the output of southern sugarcane district bagasse reaches 7,000,000 t/.The composition of bagasse is based on cellulose, hemicellulose and lignin.Compare with crop material, the persticide residue of bagasse is very low, but its degree of lignification height, just because of there are silicified cell in the degree of lignification height of bagasse, sugarcane stem epidermis, reasons such as nutrient is inharmonious, bagasse are during as ruminant feed, and organic matter digestibility has only 20～25% or lower, same reason, bagasse directly also are restricted as the culturing raw material of edible mushroom.Because the trans-utilization technological means falls behind, the phenomenon that bagasse goes out of use is comparatively general, and this has not only caused the waste of resource, but also has brought the pollution of environment.
Pencil is a kind of attending classes articles for use that people use always.It is reported that China provides 60～7,000,000,000 pencil to world market every year, is the big pencil of the first in the world exported country, and Wood-bar pencil is the principal item of pencil outlet, and this export volume year consumes the timber of about ten thousand stere more than 20.China's forest occupation rate per capita is positioned at the 107th far below world average level in world rankings, and the used timber of Wood-bar pencil mainly is linden, and China linden seeds are deficient, and high-quality linden growth cycle reaches 60～70 years.Therefore, though Wood-bar pencil outlet has exchanged foreign exchange for, as cost, this development to China's Forest Resources and ecological environment is tantamount to drain the pond to get all the fish with a large amount of outputs of high-quality timber resources.For protecting forest resources and ecological environment, the substitute production of active development Wood-bar pencil is the inevitable choice that the pencil industry further develops, social benefit and remarkable in economical benefits, and market application foreground is boundless.
Application number is the patent of CN200710156987.6, disclose a kind of waste paper replacing wood and made the method for pencil, the steps include: waste paper is ground into powdery, get with urea-formaldehyde resin adhesive is mixed, urea-formaldehyde resin adhesive adopts formaldehyde 70%, urea 28%, Liquor Hydrogen Peroxide 0.5%, sal-ammoniac 1.5% mass ratio) mixes, through 60 ℃ of reaction 5h, 20% make through dewatering again, this patent does not illustrate the content of free formaldehyde in the adhesive, even and the content of Lauxite free formaldehyde is low, in the process that pencil uses, the Lauxite of curing also can discharge formaldehyde, and this will produce pollution to the user; Application number is the patent of CN01232829.4, disclose a kind of in the pencil-lead outside volume multilayer disregard message method that is equipped with the paper roll pencil made of paper, use animal glue environment-friendly adhesive and the bonding connection of food grade lignify additive between lead for retractable pencil and each ply of paper, this patent does not disclose the concrete character of adhesive and the bond strength of pencil shaft.
Summary of the invention
Technical assignment of the present invention is to remedy the deficiencies in the prior art, provides a kind of reproducible living beings residue to prepare the method for pencil, and promptly a kind of bagasse prepares the method for pencil, and raw material resources are huge, and are with low cost; This preparation technology is simple, the technology of preparing mature and reliable.
Technical scheme of the present invention is as follows:
A kind of reproducible living beings residue of the present invention prepares the method for pencil, finishes according to the following steps:
1) preliminary treatment bagasse
Bagasse is dried, be dried to moisture mass percent less than 15%, pulverize, sieve, collection cut size seals standby less than 20 purpose bagasse powders;
2) bagasse powder with drying joins in the high-speed mixer, and high pressure sprays into isocyanate adhesive, and stirring at room blend 10min must spray the glue bagasse powder;
3) will spray the glue bagasse powder and be filled in the pencil moulding press, pen core is advanced in hot pressing, colds pressing, and appearance paint is decorated.
Described isocyanate adhesive accounts for 0.5～10% of bagasse powder over dry quality, and further preferential isocyanate adhesive accounts for 1～4% of bagasse powder over dry quality;
It is one of following that described isocyanate adhesive is selected from: methyl diphenylene diisocyanate, polyphenyl polymethylene polyisocyanates and isocyanate terminated polyurethane prepolymer;
The mixture that described polyphenyl polymethylene polyisocyanates is made up of greater than the polyisocyanates more than 2 50% methyl diphenylene diisocyanate and 50% degree of functionality, degree of functionality is 2.6～2.7,25 ℃ of viscositys) be 150～250mPa.s, the mass content of NCO is 31.5%.
Described isocyanate terminated polyurethane prepolymer, make by the following method: in reactor, add toluene di-isocyanate(TDI) and castor oil, the mass ratio of toluene di-isocyanate(TDI) and castor oil is 100: 30～50, be heated to 70～85 ℃, insulation 180min, surveying the free NCO mass percent of its high activity is 20～28%, cooling, discharging gets isocyanate terminated polyurethane prepolymer;
Described methyl diphenylene diisocyanate, polyphenyl polymethylene polyisocyanates, toluene di-isocyanate(TDI) are commercially available technical grade chemical products;
Described castor oil is the technical grade castor oil, and hydroxyl value is 164mg KOH/g, and moisture is lower than mass percent below 0.5%;
Described pencil moulding press is made up of two concentric tubes, and interior pipe is a solid tubes, and diameter is than the big 0.1mm of pen core diameter, and outer tube is hollow circle or hexagon shape, and spray glue bagasse powder is filled between two concentric tubes;
The described hot pressing of step 3), temperature are 140～150 ℃, and pressure is 4MPa, and the pencil hot pressing time of every mm dia is 0.6min, and for example, the preparation diameter is the pencil of 8mm, and then hot pressing time is 4.8min;
The described pen core of step 3) is meant the pen core of dip-coating isocyanate adhesive;
Step 3) is described advances pen core, is that pencil moulding press solid tubes goes out earlier, and pen core advances along equidirectional.
The reproducible living beings residue pencil that the present invention makes, by the light industry industry standard QB/T2774-2006 of the People's Republic of China (PRC) detect penholder in conjunction with fastness: the pencil that makes is immersed 30 ± 2) ℃ underwater 1h, oppositely turn the penholder two ends after the taking-up, penholder does not have the phenomenon of coming unglued, and the penholder that has reached the QB/T2774-2006 regulation is in conjunction with the fastness standard; In addition, the natural look of penholder similar wood, machinable, volume are cut, and meet people's use habit.
Compared with prior art, the preparation method of novel pencil of the present invention has following distinguishing feature:
1) preparation method of this pencil; be to substitute timber with the huge bagasse of china natural resources to make; adhesive is that raw material makes with the castor oil; the two all belongs to regenerated resources; raw material resources are huge, and are cheap, so; the industrialization of this product not only provides new way for the utilization again of these two kinds of resources, and China environmental protection is had great importance.
(2) preparation of product of the present invention, formaldehydeless pernicious gas such as grade and waste liquid, waste residue produce, and the product of production does not contain formaldehyde, and is all pollution-free to the user of environment and pencil.
(3) pencil holder of the present invention is in conjunction with fastness, why reach the QB/T2774-2006 standard, be because used isocyanate adhesive, this adhesive contains the free NCO of high activity, belong to the response type adhesive, under the condition of hot pressing, on the one hand with the cellulose on bagasse powder surface, (OH) reaction generates carbamate for hemicellulose and lignin hydroxyl, make and produce chemical bonding between the bagasse powder construction unit, on the other hand, NCO can also generate with the water reaction and replace urea even structures such as two ureas and triuret, the carbamate of this structure and generation common with the big molecule of bagasse in big molecule formation hydrogen bonds such as cellulose, make and further associate between the big molecule of raw material, cause penholder cured glue layer good toughness, strong in conjunction with fastness.
The specific embodiment
Below in conjunction with embodiment the present invention is further described, but protection scope of the present invention not only is confined to embodiment, the change that this field professional does technical solution of the present invention all should belong in protection scope of the present invention.
Embodiment 1
Bagasse is dried, be dried to moisture mass percent less than 15%, pulverize, sieve, collection cut size seals standby less than 20 purpose bagasse powders;
The bagasse powder of drying is joined in the high-speed mixer, and high pressure sprays into methyl diphenylene diisocyanate, and stirring at room blend 10min must spray the glue bagasse powder; Wherein, methyl diphenylene diisocyanate accounts for 1% of bagasse powder over dry quality;
To spray the glue bagasse powder and be filled in the pencil moulding press, pen core is advanced in hot pressing, colds pressing, and appearance paint is decorated.
Embodiment 2
Methyl diphenylene diisocyanate accounts for 4% of bagasse powder over dry quality, and other is with embodiment 1.
Embodiment 3
Methyl diphenylene diisocyanate accounts for 2.5% of bagasse powder over dry quality, and other is with embodiment 1.
Embodiment 4
Bagasse is dried, be dried to moisture mass percent less than 15%, pulverize, sieve, collection cut size seals standby less than 20 purpose bagasse powders;
The bagasse powder of drying is joined in the high-speed mixer, and high pressure sprays into polyphenyl polymethylene polyisocyanates, and stirring at room blend 10min must spray the glue bagasse powder; Wherein, polyphenyl polymethylene polyisocyanates accounts for 1% of bagasse powder over dry quality;
To spray the glue bagasse powder and be filled in the pencil moulding press, pen core is advanced in hot pressing, colds pressing, and appearance paint is decorated.
Embodiment 5
Polyphenyl polymethylene polyisocyanates accounts for 4% of bagasse powder over dry quality, and other is with embodiment 4.
Embodiment 6
Polyphenyl polymethylene polyisocyanates accounts for 2.5% of bagasse powder over dry quality, and other is with embodiment 4.
Embodiment 7
In reactor, add toluene di-isocyanate(TDI) and castor oil, the mass ratio of toluene di-isocyanate(TDI) and castor oil is 100: 30, be heated to 70～85 ℃, insulation 180min, surveying the free NCO mass percent of its high activity is 27.6%, cooling, and discharging gets isocyanate terminated polyurethane prepolymer;
Bagasse is dried, be dried to moisture mass percent less than 15%, pulverize, sieve, collection cut size seals standby less than 20 purpose bagasse powders;
The bagasse powder of drying is joined in the high-speed mixer, and high pressure sprays into isocyanate terminated polyurethane prepolymer, and stirring at room blend 10min must spray the glue bagasse powder; Wherein, isocyanate terminated polyurethane prepolymer accounts for 1% of bagasse powder over dry quality;
Embodiment 8
The mass ratio of toluene di-isocyanate(TDI) and castor oil is 100: 40, and other is with embodiment 7; Surveying the free NCO mass percent of its high activity is 24.3%.
Embodiment 9
The mass ratio of toluene di-isocyanate(TDI) and castor oil is 100: 50, and other is with embodiment 7; Surveying the free NCO mass percent of its high activity is 20.2%.
The pencil that embodiment 1～9 makes, by the light industry industry standard QB/T2774-2006 of the People's Republic of China (PRC) detect penholder in conjunction with fastness, penholder does not have the phenomenon of coming unglued, the penholder that has reached the QB/T2774-2006 regulation is in conjunction with the fastness standard.
Claims (9)
1. a reproducible living beings residue prepares the method for pencil, it is characterized in that finishing according to the following steps:
(1) preliminary treatment bagasse
Bagasse is dried, be dried to moisture mass percent less than 15%, pulverize, sieve, collection cut size seals standby less than 20 purpose bagasse powders;
(2) bagasse powder with drying joins in the high-speed mixer, and high pressure sprays into isocyanate adhesive, and stirring at room blend 10min must spray the glue bagasse powder;
(3) will spray the glue bagasse powder and be filled in the pencil moulding press, pen core is advanced in hot pressing, colds pressing, and appearance paint is decorated.
2. reproducible living beings residue according to claim 1 prepares the method for pencil, it is characterized in that described isocyanate adhesive accounts for 0.5～10% of bagasse powder over dry quality.
3. reproducible living beings residue according to claim 1 prepares the method for pencil, it is characterized in that described isocyanate adhesive accounts for 1～4% of bagasse powder over dry quality.
4. reproducible living beings residue according to claim 1 prepares the method for pencil, and it is one of following to it is characterized in that described isocyanate adhesive is selected from: methyl diphenylene diisocyanate, the many methylenes of many phenyl-Quito isocyanates and isocyanate terminated polyurethane prepolymer.
5. reproducible living beings residue according to claim 4 prepares the method for pencil, it is characterized in that described isocyanate terminated polyurethane prepolymer, make by the following method: in reactor, add toluene di-isocyanate(TDI) and castor oil, the mass ratio of toluene di-isocyanate(TDI) and castor oil is 100: 30～50, be heated to 70～85 ℃, insulation 180min, surveying the free NCO mass percent of its high activity is 20～28%, cooling, discharging gets isocyanate terminated polyurethane prepolymer.
6. reproducible living beings residue according to claim 1 prepares the method for pencil, it is characterized in that the described pencil moulding press of step (3) is made up of two concentric tubes, interior pipe is solid tubes, diameter is than the big 0.1mm of pen core diameter, outer tube is hollow circle or hexagon shape, and spray glue bagasse powder is filled between two concentric tubes.
7. reproducible living beings residue according to claim 1 prepares the method for pencil, it is characterized in that the described hot pressing of step (3), and temperature is 140～150 ℃, and pressure is 4MPa, and the pencil hot pressing time of every mm dia is 0.6min.
8. reproducible living beings residue according to claim 1 prepares the method for pencil, it is characterized in that the described pen core of step (3), is meant the pen core of dip-coating isocyanate adhesive.
9. reproducible living beings residue according to claim 1 prepares the method for pencil, it is characterized in that step (3) is described to advance pen core, and be that pencil moulding press solid tubes goes out earlier, pen core advances along equidirectional.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100831707A CN102248838A (en) | 2011-04-02 | 2011-04-02 | Method for manufacturing pencil by utilizing recyclable biomass residues |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100831707A CN102248838A (en) | 2011-04-02 | 2011-04-02 | Method for manufacturing pencil by utilizing recyclable biomass residues |
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| CN102248838A true CN102248838A (en) | 2011-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100831707A Pending CN102248838A (en) | 2011-04-02 | 2011-04-02 | Method for manufacturing pencil by utilizing recyclable biomass residues |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105196737A (en) * | 2015-09-10 | 2015-12-30 | 颍上县满天星文具用品有限公司 | Natural plant straw pencil and producing method thereof |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1129643A (en) * | 1995-02-24 | 1996-08-28 | 四川省营山县飞远化工厂 | Paper-plastic composite pencil shaft and manufacture thereof |
| CN1393350A (en) * | 2001-06-29 | 2003-01-29 | 田应官 | Technology for making pencil with straw and stalk |
| CN1408774A (en) * | 2001-09-28 | 2003-04-09 | 张致力 | Green environment protection plant fibre composite pencil shaft |
| CN1948399A (en) * | 2005-10-11 | 2007-04-18 | 中国林业科学研究院木材工业研究所 | Isocyanate strengthened agricultural residue fiber/plastic composite material and its preparation method |
| CN101333443A (en) * | 2008-08-01 | 2008-12-31 | 浙江大学 | Method for preparing water-dispersed block polymer flame retardants with phosphorus, silicon and nitrogen and uses thereof |
| CN101450563A (en) * | 2007-11-29 | 2009-06-10 | 王洋 | Pencil production method using waste paper |
| CN101531498A (en) * | 2008-03-14 | 2009-09-16 | 何汉中 | Clay fiber pencil slat, clay fiber pencil and production method thereof |
| CN101537650A (en) * | 2009-04-21 | 2009-09-23 | 罗万学 | Pencil slat produced by wood powder and straw powder processed by wood remainder |
| CN101758702A (en) * | 2010-01-19 | 2010-06-30 | 吴宏伟 | Environment-friendly pencil rod |
| CN101948669A (en) * | 2010-10-15 | 2011-01-19 | 济南大学 | Preparation method and use of aqueous polymer/isocyanate adhesive |
| CN101948582A (en) * | 2010-10-12 | 2011-01-19 | 马铭远 | Recycled wood pencil plank stuff |
-
2011
- 2011-04-02 CN CN2011100831707A patent/CN102248838A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1129643A (en) * | 1995-02-24 | 1996-08-28 | 四川省营山县飞远化工厂 | Paper-plastic composite pencil shaft and manufacture thereof |
| CN1393350A (en) * | 2001-06-29 | 2003-01-29 | 田应官 | Technology for making pencil with straw and stalk |
| CN1408774A (en) * | 2001-09-28 | 2003-04-09 | 张致力 | Green environment protection plant fibre composite pencil shaft |
| CN1948399A (en) * | 2005-10-11 | 2007-04-18 | 中国林业科学研究院木材工业研究所 | Isocyanate strengthened agricultural residue fiber/plastic composite material and its preparation method |
| CN101450563A (en) * | 2007-11-29 | 2009-06-10 | 王洋 | Pencil production method using waste paper |
| CN101531498A (en) * | 2008-03-14 | 2009-09-16 | 何汉中 | Clay fiber pencil slat, clay fiber pencil and production method thereof |
| CN101333443A (en) * | 2008-08-01 | 2008-12-31 | 浙江大学 | Method for preparing water-dispersed block polymer flame retardants with phosphorus, silicon and nitrogen and uses thereof |
| CN101537650A (en) * | 2009-04-21 | 2009-09-23 | 罗万学 | Pencil slat produced by wood powder and straw powder processed by wood remainder |
| CN101758702A (en) * | 2010-01-19 | 2010-06-30 | 吴宏伟 | Environment-friendly pencil rod |
| CN101948582A (en) * | 2010-10-12 | 2011-01-19 | 马铭远 | Recycled wood pencil plank stuff |
| CN101948669A (en) * | 2010-10-15 | 2011-01-19 | 济南大学 | Preparation method and use of aqueous polymer/isocyanate adhesive |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105196737A (en) * | 2015-09-10 | 2015-12-30 | 颍上县满天星文具用品有限公司 | Natural plant straw pencil and producing method thereof |
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Application publication date: 20111123 |