CN109957289A - A kind of pencil-lead and preparation method thereof - Google Patents
A kind of pencil-lead and preparation method thereof Download PDFInfo
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- CN109957289A CN109957289A CN201910295270.2A CN201910295270A CN109957289A CN 109957289 A CN109957289 A CN 109957289A CN 201910295270 A CN201910295270 A CN 201910295270A CN 109957289 A CN109957289 A CN 109957289A
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- added
- mountain flour
- pencil
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F112/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F112/02—Monomers containing only one unsaturated aliphatic radical
- C08F112/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F112/06—Hydrocarbons
- C08F112/08—Styrene
-
- 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
Abstract
The invention discloses a kind of pencil-leads, it includes each raw material of following weight parts: initiator 1.7-2, polysorbate 0.8-1, styrene 80-90, ethylene bis stearic acid amide 10-18, stearic acid 4-7, calcium stearate 4-6, zinc stearate 5-8, talcum powder 100-110, toner 30-40, PE wax 20-30, methyl methacrylate 10-14, epoxy prapanol 3-5, catalyst 0.01-0.02, diethylenetriamine 2-4, pen core material of the invention has good storage stability and mechanical property, quality is good, lubricity is good, uses Safety and Environmental Protection height.
Description
Technical field
The invention belongs to Material Fields, and in particular to a kind of pencil-lead and preparation method thereof.
Background technique
Produce the Wood-bar pencil of most original since the Britain in 1565 by hand using graphite as pen core so far, pencil is still extensive
The tool of the writing and drawing that use.Common pencil is not leaded, but is mixed according to a certain percentage using graphite with clay
It is made, this pencil falls rear pen core accidentally and is easy fried lead, influences reusing for pencil, graphite pen core is not smooth in writing
There is an astringent sense and be easy to produce clast, makes paper and finger dirty, influence human health.In order to improve pen core it is easily broken be also easy to produce it is broken
Bits, write it is not smooth, easily dirty hand etc. drawbacks, be badly in need of developing a kind of novel pen core that can substitute conventional graphite pen core, can be with
While solving above-mentioned drawback, production difficulty and production cost are reduced.
Summary of the invention
It is easily broken off problem existing for existing pen core the purpose of the present invention is improving, a kind of pencil-lead of high intensity is provided
And preparation method thereof.
To achieve the above object, the invention adopts the following technical scheme:
A kind of pencil-lead, it includes each raw material of following weight parts:
Initiator 1.7-2, polysorbate 0.8-1, styrene 80-90, ethylene bis stearic acid amide 10-18, stearic acid 4-
7, calcium stearate 4-6, zinc stearate 5-8, talcum powder 100-110, toner 30-40, PE wax 20-30, methyl methacrylate 10-
14, epoxy prapanol 3-5, catalyst 0.01-0.02, diethylenetriamine 2-4.
The catalyst is sodium methoxide.
The initiator is one of ammonium persulfate, sodium peroxydisulfate, potassium peroxydisulfate.
A kind of preparation method of pencil-lead, comprising the following steps:
(1) calcium stearate, zinc stearate, talcum powder mixing are taken, is sent in sintering furnace, keeps the temperature 1-2 at 230-240 DEG C
Hour, it is cooled to room temperature, obtains activation mountain flour；
(2) above-mentioned activation mountain flour is taken, is added in the toluene of 17-20 times of its weight, polysorbate is added, ultrasonic 5-9 divides
Clock obtains mountain flour dispersion liquid；
(3) methyl methacrylate, epoxy prapanol mixing are taken, is added in above-mentioned mountain flour dispersion liquid, stirs evenly, be sent into
Into stainless steel cauldron, it is passed through nitrogen, 90-100 DEG C of temperature of reaction kettle is adjusted, is stirred to react 1-2 hours, catalyst is added,
Adjusting temperature of reaction kettle is 150-160 DEG C, and insulated and stirred 2-3 hours, discharging, revolving removed toluene, obtains epoxy-modified mountain flour；
(4) initiator is taken, is added in the deionized water of 40-50 times of its weight, stirs evenly；
(5) diethylenetriamine, styrene mixing are taken, is added in the deionized water of 15-20 times of mixture weight, in 90-
Insulated and stirred 10-20 minutes at 95 DEG C, stirring to room temperature is sent in reaction kettle, is passed through nitrogen, adjusts temperature of reaction kettle 65-
70 DEG C, initiator solution is added, insulated and stirred 3-5 hours, discharging cooling obtained polymer emulsion；
(6) epoxy-modified mountain flour is taken, is added in above-mentioned polymer emulsion, stirs evenly, the double stearic acid acyls of ethylene are added
Amine, increasing temperature is 160-170 DEG C, insulated and stirred 1-2 hours, filters, filter cake is washed, 1-2 hours dry, and it is modified to obtain mountain flour
Polymer；
(7) it takes above-mentioned mountain flour polymer-modified, is mixed with stearic acid, toner, PE wax, stir evenly, be sent to extruder
In, melting extrusion is granulated, obtains core master batch；
(8) above-mentioned core master batch is transferred to crowded core equipment, squeezed out to get the pencil-lead.
Drying described in step (6) is vacuum drying, and drying temperature is 70-80 DEG C.
Advantages of the present invention:
The present invention first activates mountain flour, is distributed in toluene solution, as solvent, with methyl methacrylate, ring
Oxygen propyl alcohol is raw material, carries out ester exchange reaction under the action of catalyst, obtains epoxy-modified mountain flour, uses diethylenetriamine later
Handle styrene monomer, then polymerize under initiator effect, obtain the modified polymer of amine, finally again with epoxy-modified mountain flour
It is blended, promotes epoxy cross-linking at high temperature, to realize dispersion compatibility of the mountain flour between polystyrene, improve finished product pen
The stability of core material, pen core material of the invention have good storage stability and mechanical property, and quality is good, not easy to break
Disconnected, pencil-lead lubricity of the invention is good, uses Safety and Environmental Protection height.
Specific embodiment
Embodiment 1
A kind of pencil-lead, it includes each raw material of following weight parts:
Sodium peroxydisulfate 1.7, polysorbate 0.8, styrene 80, ethylene bis stearic acid amide 10, stearic acid 4, calcium stearate
4, zinc stearate 5, talcum powder 100, toner 30, PE wax 20-, methyl methacrylate 10, epoxy prapanol 3, catalyst 0.01, two
Ethylene triamine 2.
The catalyst is sodium methoxide.
A kind of preparation method of pencil-lead, comprising the following steps:
(1) calcium stearate, zinc stearate, talcum powder mixing are taken, is sent in sintering furnace, keeps the temperature 1 hour at 230 DEG C,
It is cooled to room temperature, obtains activation mountain flour；
(2) above-mentioned activation mountain flour is taken, is added in the toluene of 17 times of its weight, polysorbate is added, ultrasound 5 minutes obtains
Mountain flour dispersion liquid；
(3) methyl methacrylate, epoxy prapanol mixing are taken, is added in above-mentioned mountain flour dispersion liquid, stirs evenly, be sent into
Into stainless steel cauldron, it is passed through nitrogen, 90 DEG C of temperature of reaction kettle is adjusted, is stirred to react 1 hour, catalyst is added, is adjusted anti-
Answering kettle temperature degree is 150 DEG C, and insulated and stirred 2 hours, discharging, revolving removed toluene, obtains epoxy-modified mountain flour；
(4) sodium peroxydisulfate is taken, is added in the deionized water of 40 times of its weight, stirs evenly；
(5) diethylenetriamine, styrene mixing are taken, is added in 15 times of mixture weight of deionized water, at 90 DEG C
Insulated and stirred 10 minutes, stirring to room temperature was sent in reaction kettle, is passed through nitrogen, adjusts 65 DEG C of temperature of reaction kettle, and over cure is added
Acid sodium aqueous solution, insulated and stirred 3 hours, discharging cooling obtained polymer emulsion；
(6) epoxy-modified mountain flour is taken, is added in above-mentioned polymer emulsion, stirs evenly, the double stearic acid acyls of ethylene are added
Amine, increasing temperature is 160 DEG C, insulated and stirred 1 hour, filters, filter cake is washed, 1 hour dry at 70 DEG C of vacuum, obtains mountain flour and changes
Property polymer；
(7) it takes above-mentioned mountain flour polymer-modified, is mixed with stearic acid, toner, PE wax, stir evenly, be sent to extruder
In, melting extrusion is granulated, obtains core master batch；
(8) above-mentioned core master batch is transferred to crowded core equipment, squeezed out to get the pencil-lead.
Embodiment 2
A kind of pencil-lead, it includes each raw material of following weight parts:
It is potassium peroxydisulfate 2, polysorbate 1, styrene 90, ethylene bis stearic acid amide 18, stearic acid 7, calcium stearate 6, hard
Resin acid zinc 8, talcum powder 110, toner 40, PE wax 30, methyl methacrylate 14, epoxy prapanol 5, catalyst 0.02, divinyl
Triamine 4.
The catalyst is sodium methoxide.
A kind of preparation method of pencil-lead, comprising the following steps:
(1) calcium stearate, zinc stearate, talcum powder mixing are taken, is sent in sintering furnace, keeps the temperature 2 hours at 240 DEG C,
It is cooled to room temperature, obtains activation mountain flour；
(2) above-mentioned activation mountain flour is taken, is added in the toluene of 20 times of its weight, polysorbate is added, ultrasound 9 minutes obtains
Mountain flour dispersion liquid；
(3) methyl methacrylate, epoxy prapanol mixing are taken, is added in above-mentioned mountain flour dispersion liquid, stirs evenly, be sent into
Into stainless steel cauldron, it is passed through nitrogen, 100 DEG C of temperature of reaction kettle is adjusted, is stirred to react 2 hours, catalyst is added, is adjusted anti-
Answering kettle temperature degree is 160 DEG C, and insulated and stirred 3 hours, discharging, revolving removed toluene, obtains epoxy-modified mountain flour；
(4) potassium peroxydisulfate is taken, is added in the deionized water of 50 times of its weight, stirs evenly；
(5) diethylenetriamine, styrene mixing are taken, is added in 20 times of mixture weight of deionized water, at 95 DEG C
Insulated and stirred 20 minutes, stirring to room temperature was sent in reaction kettle, is passed through nitrogen, adjusts 70 DEG C of temperature of reaction kettle, and over cure is added
Sour aqueous solutions of potassium, insulated and stirred 5 hours, discharging cooling obtained polymer emulsion；
(6) epoxy-modified mountain flour is taken, is added in above-mentioned polymer emulsion, stirs evenly, the double stearic acid acyls of ethylene are added
Amine, increasing temperature is 170 DEG C, insulated and stirred 2 hours, filters, filter cake is washed, 2 hours dry at 80 DEG C of vacuum, obtains mountain flour and changes
Property polymer；
(7) it takes above-mentioned mountain flour polymer-modified, is mixed with stearic acid, toner, PE wax, stir evenly, be sent to extruder
In, melting extrusion is granulated, obtains core master batch；
(8) above-mentioned core master batch is transferred to crowded core equipment, squeezed out to get the pencil-lead.
Claims (5)
1. a kind of pencil-lead, which is characterized in that it includes each raw material of following weight parts:
It is initiator 1.7-2, polysorbate 0.8-1, styrene 80-90, ethylene bis stearic acid amide 10-18, stearic acid 4-7, hard
Resin acid calcium 4-6, zinc stearate 5-8, talcum powder 100-110, toner 30-40, PE wax 20-30, methyl methacrylate 10-14,
Epoxy prapanol 3-5, catalyst 0.01-0.02, diethylenetriamine 2-4.
2. a kind of pencil-lead according to claim 1, which is characterized in that the catalyst is sodium methoxide.
3. a kind of pencil-lead according to claim 1, which is characterized in that the initiator is ammonium persulfate, persulfuric acid
One of sodium, potassium peroxydisulfate.
4. a kind of preparation method of pencil-lead as described in claim 1, which comprises the following steps:
(1) calcium stearate, zinc stearate, talcum powder mixing are taken, is sent in sintering furnace, it is small that 1-2 is kept the temperature at 230-240 DEG C
When, it is cooled to room temperature, obtains activation mountain flour；
(2) above-mentioned activation mountain flour is taken, is added in the toluene of 17-20 times of its weight, polysorbate is added, it is 5-9 minutes ultrasonic, it obtains
Mountain flour dispersion liquid；
(3) methyl methacrylate, epoxy prapanol mixing are taken, is added in above-mentioned mountain flour dispersion liquid, is stirred evenly, be sent to not
It becomes rusty in steel reaction kettle, is passed through nitrogen, adjust 90-100 DEG C of temperature of reaction kettle, be stirred to react 1-2 hours, catalyst is added, adjust
Temperature of reaction kettle is 150-160 DEG C, and insulated and stirred 2-3 hours, discharging, revolving removed toluene, obtains epoxy-modified mountain flour；
(4) initiator is taken, is added in the deionized water of 40-50 times of its weight, stirs evenly；
(5) diethylenetriamine, styrene mixing are taken, is added in the deionized water of 15-20 times of mixture weight, at 90-95 DEG C
Lower insulated and stirred 10-20 minutes, stirring to room temperature, is sent in reaction kettle, is passed through nitrogen, adjusts 65-70 DEG C of temperature of reaction kettle,
Initiator solution is added, insulated and stirred 3-5 hours, discharging cooling obtained polymer emulsion；
(6) epoxy-modified mountain flour is taken, is added in above-mentioned polymer emulsion, stirs evenly, ethylene bis stearic acid amide is added, is risen
High-temperature is 160-170 DEG C, insulated and stirred 1-2 hours, filters, filter cake is washed, 1-2 hours dry, obtains mountain flour modified poly
Object；
(7) it takes above-mentioned mountain flour polymer-modified, is mixed with stearic acid, toner, PE wax, stir evenly, be sent in extruder, melt
Melt extrusion, is granulated, obtains core master batch；
(8) above-mentioned core master batch is transferred to crowded core equipment, squeezed out to get the pencil-lead.
5. a kind of preparation method of pencil-lead according to claim 4, which is characterized in that done described in step (6)
Dry is vacuum drying, and drying temperature is 70-80 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910295270.2A CN109957289A (en) | 2019-04-12 | 2019-04-12 | A kind of pencil-lead and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910295270.2A CN109957289A (en) | 2019-04-12 | 2019-04-12 | A kind of pencil-lead and preparation method thereof |
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| CN109957289A true CN109957289A (en) | 2019-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910295270.2A Pending CN109957289A (en) | 2019-04-12 | 2019-04-12 | A kind of pencil-lead and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110499209A (en) * | 2019-09-16 | 2019-11-26 | 安徽省聚科石墨烯科技股份公司 | A kind of graphene antiwear hydraulic oil and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107043577A (en) * | 2017-04-20 | 2017-08-15 | 浙江华科笔业有限公司 | A kind of overall plastic crayon and preparation method thereof |
| CN108129914A (en) * | 2017-12-08 | 2018-06-08 | 陕西科技大学 | High colored pencil lead of a kind of flexural strength and preparation method thereof |
-
2019
- 2019-04-12 CN CN201910295270.2A patent/CN109957289A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107043577A (en) * | 2017-04-20 | 2017-08-15 | 浙江华科笔业有限公司 | A kind of overall plastic crayon and preparation method thereof |
| CN108129914A (en) * | 2017-12-08 | 2018-06-08 | 陕西科技大学 | High colored pencil lead of a kind of flexural strength and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110499209A (en) * | 2019-09-16 | 2019-11-26 | 安徽省聚科石墨烯科技股份公司 | A kind of graphene antiwear hydraulic oil and preparation method thereof |
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Application publication date: 20190702 |
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