CN107384253A - A kind of pencil glue and preparation method thereof - Google Patents
A kind of pencil glue and preparation method thereof Download PDFInfo
- Publication number
- CN107384253A CN107384253A CN201710703626.2A CN201710703626A CN107384253A CN 107384253 A CN107384253 A CN 107384253A CN 201710703626 A CN201710703626 A CN 201710703626A CN 107384253 A CN107384253 A CN 107384253A
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- Prior art keywords
- pencil
- glue
- pencil glue
- viscosity
- plasticizer
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Classifications
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/04—Homopolymers or copolymers of ethene
- C09J123/08—Copolymers of ethene
- C09J123/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C09J123/0853—Vinylacetate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention belongs to field of adhesive technology, is related to a kind of pencil glue and preparation method thereof.The pencil glue is made up of the component of following mass percent：VAE emulsions 75.7%, aqueous polyurethane emulsion 5%, plasticizer 10%, surfactant 0.2%, preservative 0.1%, distilled water 9%.Pencil glue provided by the present invention has following technical advantage：Solidification can be reached within the extremely short time, while possess higher adhesion strength, so as to shorten the production time, improve production efficiency；Specifically, commercially available common pencil glue needs that folder, plane volume could be received after clamping plate presses 24h, and pencil glue of the present invention can receive folder after clamping plate presses 2h, and carries out plane volume, while shows excellent viscous core effect；Therefore, pencil glue of the present invention has broad application prospects and market potential.
Description
Technical field
The invention belongs to field of adhesive technology, and in particular to a kind of pencil glue and preparation method thereof.
Background technology
Pencil manufacture craft includes：Pencil core rubber is coated in the upper and lower template face of pencil slat material and groove, then by pencil-lead
It is put into mo(u)ld bottom half board slot, then merges upper and lower template, then using clamp, implements again after glue curing follow-up
Dig the processes such as bar, shaping, japanning.Water base pencil core rubber is being embodied in the following aspects using link process leading indicator：(1)
Adhesion strength, determine most basic, the lasting performance of pencil；(2) weatherability, well known in the art to be, so-called weatherability
Refer to that pencil core rubber is subjected to such as illumination, cold and hot, wind and rain weather conditions test applied to its quality under the conditions of outdoor the Nature, its
The tolerance shown；(3) solvent resistance and water resistance；(4) rate of drying (i.e. curing rate), the characteristic will influence lead
The efficiency that technique makes；(5) glue amount is consumed, the characteristic will influence the cost of pencil production.However, existing pencil glue is often deposited
In many defects, for example, commercially available pencil glue needs pressure 24h or so to obtain good bond effect after bonding,
Therefore, production efficiency has been had a strong impact on.
In addition, the bonding of pencil is related to two kinds of entirely different materials, pencil-lead is according to certain with graphite and clay
Ratio mix, smoothly pencil-lead is compared in some writings can even immerse pen core in animal oil or vegetable oil,
To increase the brightness after the writing of pen core；But glue to lead for retractable pencil outside animals and plants oil reservoir infiltration it is bad, so as to adhesive tape come
Bigger challenge.Also, the timber of pencil is related to several kinds, and softer timber has poplar, birch, the hard timber of a bit
There is Xi Damu.Poplar, the porosity of birch material are higher, and glue is easily seeped into inside timber after gluing, bonding surface can be caused to stay
Glue amount is few, so bond effect is poor；And west is higher up to woody body oil content, infiltration of the glue to timber can be decreased obviously, and be led
Hardening time is caused to increase.
As can be seen here, the properties of pencil glue need further to be lifted, to meet increasingly harsh actual demand.
The content of the invention
For above-mentioned technological deficiency present in prior art, inventor is prepared for a kind of novel pencil glue；Inventor
Dexterously aqueous polyurethane emulsion and VAE emulsions are blended, VAE emulsions therein are advantageous to the larger base material of porosity
Bonding surface is caused to stay glue more after gluing, aqueous polyurethane emulsion therein is then advantageous to shorten the hardening time of glue,
Improve adhesion strength simultaneously；And it with the addition of the plasticizer of appropriate feeding quantity so that bonding force and glue sheet of the glue to base material
The cohesion of body reaches a kind of preferably balance.
Therefore, the first aspect of the present invention provides a kind of pencil glue, and it is made up of the component of following mass percent：
VAE emulsions 75.7%, aqueous polyurethane emulsion 5%, plasticizer 10%, surfactant 0.2%, preservative 0.1%, distilled water
9%.
Preferably, the pH value of above-mentioned pencil glue is 4.00~6.00.
It is further preferred that in above-mentioned pencil glue, the solid content of the VAE emulsions is 55%.
It is further preferred that in above-mentioned pencil glue, the solid content of the aqueous polyurethane emulsion is 50%.
It is further preferred that in above-mentioned pencil glue, the plasticizer is the double isobutyrates of pentanediol.
It is further preferred that in above-mentioned pencil glue, the surfactant is sulfo-succinic acid dioctyl sodium salt.
It is further preferred that in above-mentioned pencil glue, the preservative is isothiazolone.
In addition, the second aspect of the present invention provides a kind of preparation method of the pencil glue described in first aspect present invention,
Comprise the following steps：
S1：The VAE emulsions and the aqueous polyurethane emulsion are added in reaction vessel, it is 30 to set mixing speed
Rev/min, stir 10~20 minutes, be slowly added to the plasticizer into the reaction vessel while stirring；
S2：After the plasticizer adds, mixing speed is arranged to 60 revs/min, stirred 15~25 minutes, while stirring
Mix side and surfactant, preservative and distilled water are added into the reaction vessel；
S3：After adding, mixing speed is arranged to 30 revs/min, is followed by stirring for 8~15 minutes；
S4：Sampling, product viscosity is detected, if viscosity is qualified, directly discharged；If viscosity is unqualified, add in addition
Distilled water is to adjust the viscosity of product, until product viscosity is qualified, discharging.
Compared with commercially available common pencil glue, pencil glue provided by the present invention has following technical advantage：Can be in pole
Reach solidification in the short time, while possess higher adhesion strength, so as to shorten the production time, improve production efficiency；
Specifically, commercially available common pencil glue needs that folder, plane volume could be received after clamping plate presses 24h, and pencil glue of the present invention
Folder can be received after clamping plate presses 2h, and carry out plane volume, while show excellent viscous core effect；Therefore, lead of the present invention
Glue has broad application prospects and market potential.
Embodiment
With reference to embodiment, the present invention is further elaborated, but the present invention is not limited to following embodiment party
Formula.
According to the pencil glue of first aspect, it is made up of the component of following mass percent：It is VAE emulsions 75.7%, water-based
Polyaminoester emulsion 5%, plasticizer 10%, surfactant 0.2%, preservative 0.1%, distilled water 9%.
In a preferred embodiment, the pH value of the pencil glue is 4.00~6.00.
In a further preferred embodiment, the solid content of the VAE emulsions is 55%.
In a further preferred embodiment, the solid content of the aqueous polyurethane emulsion is 50%.
In a further preferred embodiment, the plasticizer is the double isobutyrates of pentanediol.
In a further preferred embodiment, the surfactant is sulfo-succinic acid dioctyl sodium salt.
In a further preferred embodiment, the preservative is isothiazolone.
According to the preparation method of second aspect, for preparing the pencil glue described in first aspect, the preparation method include with
Lower step：
S1：The VAE emulsions and the aqueous polyurethane emulsion are added in reaction vessel, it is 30 to set mixing speed
Rev/min, stir 10~20 minutes, be slowly added to the plasticizer into the reaction vessel while stirring；
S2：After the plasticizer adds, mixing speed is arranged to 60 revs/min, stirred 15~25 minutes, while stirring
Mix side and surfactant, preservative and distilled water are added into the reaction vessel；
S3：After adding, mixing speed is arranged to 30 revs/min, is followed by stirring for 8~15 minutes；
S4：Sampling, product viscosity is detected, if viscosity is qualified, directly discharged；If viscosity is unqualified, add in addition
Distilled water is to adjust the viscosity of product, until product viscosity is qualified, discharging.
Embodiment 1
According to the pencil glue that a kind of quick wood of this embodiment is broken, its is composed of the following components：VAE emulsion (solid contents
55%) the double isobutyrate 2kg of 15.14kg, aqueous polyurethane emulsion 1kg, the pentanediol as plasticizer, as surfactant
Sulfo-succinic acid dioctyl sodium salt 0.04kg, isothiazolone 0.02kg and distilled water 1.8kg as preservative.
The broken pencil glue of the quick wood is prepared according to following steps：
1) above-mentioned each component is accurately weighed；
2) the VAE emulsions and the aqueous polyurethane emulsion are added in reactor, set mixing speed be 30 turns/
Minute, stir 15 minutes, be slowly added to the double isobutyrates of pentanediol into the reactor while stirring；
3) after the double isobutyrates of the pentanediol add, mixing speed is arranged to 60 revs/min, stirs 20 points
Clock, sulfo-succinic acid dioctyl sodium salt, isothiazolone and distilled water are added into the reactor while stirring；
4) after adding, mixing speed is arranged to 30 revs/min, is followed by stirring for 10 minutes；
5) sample, detect product viscosity, if viscosity is qualified, directly discharge；If viscosity is unqualified, addition in addition is steamed
Distilled water (distilled water added in addition in the step is not included within above-mentioned 1.8kg distilled water) to adjust the viscosity of product,
Until product viscosity is qualified, discharging；
6) in addition, quality inspection personnel generally also needs to detect all other physical indexs of product, to ensure that product is qualified；The inspection
Survey includes apparent viscosity, solid content and pH value comprising observation detection and experiment detection, the physical index.
Specifically, the observation detection includes：
1) shear strength test：
(1) 8 pieces of samples are at least accurately detected every time；Glue is coated in poplar or west is reached on face side, splicing area 25mm*
25mm, glue-spread 150-160g/m2；
(2) glue-coated sample wooden unit is put into forcing press with air pump press, applies pressure 0.7-1.0N/mm2, pressurization
5min；
(3) puller system test sample intensity is used, shear strength should be not less than 1.76N/mm2；
2) core test is glued
(1) the poplar plate of groove, west are being dug up to uniform gluing on plank respectively, glue-spread is in 150-160g/m2, put in groove
Enter pen core, cover the pencil board of the other one side of non-gluing, moulding pressure 0.7-1.0N/mm2, pressurize 2h after dig pencil with wound, will
Plane volume after pencil health 24h, carry out volume and cut, roll up the pen core cut retained on wood chip it is more.
(2) hold 4-5 and only roll up the pencil cut, nib hammers ground, pen down, so that angle perpendicular to the ground is firmly rapid
Endpiece protrudes without pen core.
Also, the experiment detection includes：
A. apparent viscosity detects
Viscosity is liquid in flowing, a kind of adhesion properties to be rubbed in its intermolecular generation, and sticky size is with viscous
Degree represents, is that its unit is Pas, and it is 1m to be characterized as two pieces of areas for characterizing the related resistance factor of liquid property2's
Plate is dipped in liquid, two plates distance be 1m, if plus 1N shearing stress, it is the 1m/ seconds to make the relative speed between two plates, then this liquid
Viscosity be 1Pas, and 1Pas=1000mPas=1000cps.
Apparent viscosity is tested using the viscosimeters of Brookfield DV- II, and specific method of testing is as follows：
1. sample preparation：Directly contained and taken with regulation container, it is ensured that uniform bubble-free, measured at 2/3.
2. operating procedure：
I sample of the same race should select suitable identical rotor and rotating speed, make reading in 20%~80% scope of dial
It is interior；
II is put into the container for filling sample in water bath with thermostatic control, specimen temperature is balanced with test temperature, and keep sample
Temperature is uniform；
Rotors normal is immersed sample centre by III, and liquid level is reached rotor liquid level graticule (has fender bracket to fill
On)；
IV starts rotation viscometer, reading of the pointer when constant on disk when reading rotates；
V each Specimen Determination is three times.
B. solid content detects
Solid content is the mass percent that remainder accounts for total amount after emulsion is dried under prescribed conditions, i.e., water base adhesive has
Imitate composition.In adhesive industry, the test condition of solid content is usually 130 DEG C, and 30 minutes, specific testing procedure was as follows：
1. before being tested, it is ensured that the temperature in baking oven is less than 50 DEG C；
2. using before electronic balance, it is ensured that electronic balance is clean, and regulation electronic balance is to be horizontal, regulation zero
Point；
3. the weight of aluminium foil is weighed, and record data M1；
4. aluminium foil not removed, directly electronic balance is returned to zero；
5. wooden stick is put into after fully being soaked in sample, about 1g or so sample is taken to weigh example weight on aluminium foil, remember
Data M2 is recorded, and by aluminium foil doubling, it is ensured that sample is uniformly distributed；
6. repeat step 3.~5., according to this reprocessing 2 samples；
7. the above-mentioned aluminium foil for scribbling sample is put into baking oven, and oven temperature is set as 130 DEG C, then start to warm up and add
Heat, when baking oven reaches 130 DEG C, freeze-day with constant temperature 30 minutes；
8. after the completion of drying, weigh aluminium foil and sample residual volume, record numerical value M3；
9. calculate：Solid content %=(M3-M1)/M2 × 100%；
10. result：Unit is represented with percentage (%), final result takes the average value of three samples.
The detection of c.pH values
The specific determination step of pH value is as follows：
1. ensure daily before use, pH meter has been calibrated；
2. if instrument powers off before using, first to preheat 30 minutes；
3. clean electrode and temperature probe are immersed in testing sample, when screen to be shown shows stable reading, by the pH
Records of values gets off；
4. after use, electrode and temperature probe are cleaned out with distilled water；
5. with plastic bottle saturation potassium chloride distilled water solution, electrode is soaked.
Experiment is detected more than, and every key index of the broken pencil glue of the quick wood in this embodiment is controlled
System, every key index of qualified products are as shown in table 1 below：
Table 1
In upper table 1,2# represents the rotor number of viscosimeter.
In summary, the pencil glue that the quick wood that prepared by the present invention is broken, by being added in the VAE emulsions of solid content 55%
A small amount of aqueous polyurethane emulsion, solidification can be reached within the extremely short time, while possess higher than common pencil glue glue
Knotting strength, especially, the ratio of plasticizer improves to 10% to (in the prior art, plasticizer addition will not surpass in a creative way
Cross 5%) so that glue reaches a preferably balance to the cohesion of the bonding force and glue of base material in itself；Compared to common lead
Glue, lower 2h that need to pressurize of equal pressure can receive folder, the production time be significantly shorten, so as to improve production efficiency.
The specific embodiment of the present invention is described in detail above, but it is intended only as example, it is of the invention and unlimited
It is formed on particular embodiments described above.To those skilled in the art, it is any to the equivalent modifications that carry out of the present invention and
Substitute also all among scope of the invention.Therefore, the impartial conversion made without departing from the spirit and scope of the invention and
Modification, all should be contained within the scope of the invention.
Claims (8)
1. a kind of pencil glue, it is characterised in that the pencil glue is made up of the component of following mass percent：VAE emulsions
75.7%th, aqueous polyurethane emulsion 5%, plasticizer 10%, surfactant 0.2%, preservative 0.1%, distilled water 9%.
2. pencil glue according to claim 1, it is characterised in that the pH value of the pencil glue is 4.00~6.00.
3. pencil glue according to claim 1 or 2, it is characterised in that the solid content of the VAE emulsions is 55%.
4. pencil glue according to claim 1 or 2, it is characterised in that the solid content of the aqueous polyurethane emulsion is
50%.
5. pencil glue according to claim 1 or 2, it is characterised in that the plasticizer is the double isobutyrates of pentanediol.
6. pencil glue according to claim 1 or 2, it is characterised in that the surfactant is that sulfo-succinic acid two is pungent
Base sodium salt.
7. pencil glue according to claim 1 or 2, it is characterised in that the preservative is isothiazolone.
8. a kind of preparation method according to pencil glue according to any one of claims 1 to 7, it is characterised in that including following
Step：
S1：The VAE emulsions and the aqueous polyurethane emulsion are added in reaction vessel, set mixing speed be 30 turns/
Minute, stir 10~20 minutes, be slowly added to the plasticizer into the reaction vessel while stirring；
S2：After the plasticizer adds, mixing speed is arranged to 60 revs/min, stirs 15~25 minutes, while stirring
Surfactant, preservative and distilled water are added into the reaction vessel；
S3：After adding, mixing speed is arranged to 30 revs/min, is followed by stirring for 8~15 minutes；
S4：Sampling, product viscosity is detected, if viscosity is qualified, directly discharged；If viscosity is unqualified, addition distillation in addition
Water is to adjust the viscosity of product, until product viscosity is qualified, discharging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710703626.2A CN107384253A (en) | 2017-08-16 | 2017-08-16 | A kind of pencil glue and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710703626.2A CN107384253A (en) | 2017-08-16 | 2017-08-16 | A kind of pencil glue and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN107384253A true CN107384253A (en) | 2017-11-24 |
Family
ID=60352914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710703626.2A Pending CN107384253A (en) | 2017-08-16 | 2017-08-16 | A kind of pencil glue and preparation method thereof |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110982456A (en) * | 2019-12-24 | 2020-04-10 | 顶立新材料科技有限公司 | Lead-sticking pencil glue and preparation method thereof |
| CN111303805A (en) * | 2020-03-11 | 2020-06-19 | 上海诺东新材料科技中心 | Normal-temperature quick-drying type bi-component water-based pencil glue |
| CN114369430A (en) * | 2021-12-31 | 2022-04-19 | 北京长润化工有限公司 | Low-temperature lap adhesive and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146268A (en) * | 2011-01-17 | 2011-08-10 | 上海英诺威化学有限公司 | High-performance water-based pencil core adhesive |
| CN104031581A (en) * | 2014-05-29 | 2014-09-10 | 中国第一铅笔有限公司 | Environment-friendly high-performance water-based adhesive for wooden pencil and preparation method thereof |
-
2017
- 2017-08-16 CN CN201710703626.2A patent/CN107384253A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146268A (en) * | 2011-01-17 | 2011-08-10 | 上海英诺威化学有限公司 | High-performance water-based pencil core adhesive |
| CN104031581A (en) * | 2014-05-29 | 2014-09-10 | 中国第一铅笔有限公司 | Environment-friendly high-performance water-based adhesive for wooden pencil and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 李维盈等: "PU乳液对VAE乳液共混改性的研究", 《化学与粘合》 * |
| 陈沛智等: "EVA/PU乳液共混体系研究", 《胶体与聚合物》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110982456A (en) * | 2019-12-24 | 2020-04-10 | 顶立新材料科技有限公司 | Lead-sticking pencil glue and preparation method thereof |
| CN110982456B (en) * | 2019-12-24 | 2021-06-18 | 顶立新材料科技有限公司 | Lead-sticking pencil glue and preparation method thereof |
| CN111303805A (en) * | 2020-03-11 | 2020-06-19 | 上海诺东新材料科技中心 | Normal-temperature quick-drying type bi-component water-based pencil glue |
| CN114369430A (en) * | 2021-12-31 | 2022-04-19 | 北京长润化工有限公司 | Low-temperature lap adhesive and preparation method thereof |
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Application publication date: 20171124 |