CN109575685A - Neutral writing ink and ball pen containing the Neutral writing ink - Google Patents
Neutral writing ink and ball pen containing the Neutral writing ink Download PDFInfo
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- CN109575685A CN109575685A CN201910057603.8A CN201910057603A CN109575685A CN 109575685 A CN109575685 A CN 109575685A CN 201910057603 A CN201910057603 A CN 201910057603A CN 109575685 A CN109575685 A CN 109575685A
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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
- C09D11/00—Inks
- C09D11/16—Writing inks
- C09D11/18—Writing inks specially adapted for ball-point writing instruments
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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
- C09D11/00—Inks
- C09D11/16—Writing inks
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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
- C09D11/00—Inks
- C09D11/16—Writing inks
- C09D11/17—Writing inks characterised by colouring agents
Abstract
The present invention provides a kind of Neutral writing ink and the ball pen containing the Neutral writing ink, and by weight, Neutral writing ink consists of the following compositions: 6.0~10.0 parts by weight of pigment；1.5~3.0 parts by weight of macromolecule dispersing agent；Thicken 0.2~1.0 parts by weight of object；0.01~0.1 parts by weight of lubricant；5.0~10.0 parts by weight of cosolvent；10.0~20.0 parts by weight of moisturizer；0.1~0.3 parts by weight of fungicide；0.5~2.0 parts by weight of pH adjusting agent；And 53.6~76.7 parts by weight of deionized water.Neutral writing ink of the invention uses specific thickening object, so that ink is had both the viscosity characteristics of shear thinning and tension stiffening, leak resistance is good and low temperature writing quality is good.
Description
Technical field
The present invention relates to writing implement field, in particular to a kind of Neutral writing ink and the ball pen containing the Neutral writing ink.
Background technique
Ball pen is the writing implement being commonly used, and the evaluation and test of ball pen writing quality is related to multiple projects, wherein
There is an important test to drip product performance of ink test, it is that phantom shoppers temporarily cease writing holding pen in writing process
Head-down state (nib is then always at state directed downwardly for pressing ball pen), requires nib that cannot have at this time
Drip black or serious product ink, i.e. ink leak phenomenon.The oil-based ink apparent viscosity with higher that oiliness ball pen uses, usually exists
10Pas or more, ink flow is poor, thus does not generally have ink under static state and flow out from written the rim of a bowl.It is aqueous
The water-based ink viscosity that biro uses is smaller, usually less than 0.02Pas, but has special ink storage in aqueous ballpoint pen
Accessory~water storage core, ink is locked in water storage core well under the action of capillary attraction, ink leak phenomenon will not occurs.Pen
Head ink leak is then more typical for Neutral writing ink ball pen, especially pressing gel ink pen, due to lacking the protection of pen cap, ink leak with
The consequence generated afterwards will be more serious.
There is a tiny spring in the nib of pressing gel ink pen, spring one end is stuck in the stuck point inside written rear end
Place, the other end stretch out a fine needle and withstand ball.Spring is in compressive state, and by written ball, closedtop closes the fine needle of front forward
The rim of a bowl goes out ink passage, prevents ink leak.Spring retraction exposes the rim of a bowl to normal out of ink under pressure when writing.It is theoretical
Upper spring is in compressive state always and plays good sealing function, does not have the generation of ink leak phenomenon, however since nib adds
The reasons such as work dimensional uniformity and spring assembly technology, spring top is inclined or written the rim of a bowl irregularly etc. caused by ink leak phenomenon when have
Occur, causes severe writing experience.
The prior art focuses primarily upon the improvement to pen core structure, controls or inhibits out of ink to reach anti-leakage purpose.
CN1112489A discloses a kind of connection being located between nib and accumulator, and connection inner cavity is equipped with the bead that can be move freely, leads to
Control of the bead with structure and the dimensional fits realization for connecting inner cavity both ends open to ink flow is crossed, ink can be effectively prevented
It flows backwards, while being also beneficial to ink leak of the ink at nib.However since connection structure is complicated, dimensioned is difficult, application
Effect is difficult to ensure, such to design rare practical application.
So far, improve gel ink pen ink leak phenomenon from ink angle to be rarely reported.Improving ink leak resistance can be common
Way is to improve apparent viscosity, however the raising of apparent viscosity will certainly damage fluency out of ink.In addition, the lower ink of temperature
Viscosity it is higher, the raising of room temperature apparent viscosity will lead to low temperature apparent viscosity and greatly improve, and then damage gel ink pen
Writing quality under low temperature environment.
In conclusion the solution that there is no for the ink leak problem of gel ink pen lacks one especially in terms of ink
The good Neutral writing ink for not damaging other writing qualities again of kind leak resistance.
Summary of the invention
It is an object of the invention to overcome the shortage of prior art, the composition of Neutral writing ink is improved, Neutral writing ink is made
With excellent leak resistance energy.
On the one hand, the present invention provides a kind of Neutral writing ink, and by weight, the Neutral writing ink consists of the following compositions:
According to embodiment of the present invention, the thickening object is non-ionic polyalcohol and acrylic thickener
Composition, mass ratio is between 1:2~1:5.
According to embodiment of the present invention, the non-ionic polyalcohol be number-average molecular weight 20-100 ten thousand it is non-from
Subtype straight chain polymer.
According to embodiment of the present invention, the non-ionic polyalcohol is polyacrylamide, polyethylene glycol, poly- second
One of enol.
According to embodiment of the present invention, the macromolecule dispersing agent is acrylic compounds aqueous high molecular dispersing agent.
According to embodiment of the present invention, the lubricant is that aliphatic alcohol polyoxyvinethene phosphate or alkyl phenol are poly-
One or more mixtures of ethylene oxide ether phosphate.
According to embodiment of the present invention, the cosolvent is one or both of propylene glycol, 1,3-BDO
Mixture.
According to embodiment of the present invention, the moisturizer is glycerine, in polyethylene glycol, sorbierite, xylitol
One or more kinds of mixtures.
According to embodiment of the present invention, the fungicide is isothiazolinone substance or benzoisothiazolinone
The mixture of one or both of substance.
According to embodiment of the present invention, the pH adjusting agent be dimethylethanolamine, triethanolamine, triethylamine,
The mixture of one or more of diisopropyl ethyl amine.
According to embodiment of the present invention, at 25 DEG C, the Neutral writing ink is in 1.256s-1Table under shear rate
Sight viscosity is 1.0~2.0Pas, in 12.56s-1Apparent viscosity under shear rate is 0.4~0.6Pas.
According to embodiment of the present invention, under same shear rate, the Neutral writing ink is apparent viscous at 0 DEG C
Degree is less than 2 times of the apparent viscosity at 25 DEG C.
According to embodiment of the present invention, under stretching action, the Neutral writing ink is more than viscosity turning point
Apparent viscosity increases with the increase of elongation strain.
According to embodiment of the present invention, the corresponding elongation strain of the viscosity turning point is 4.5~6.5.
On the other hand, the present invention also provides a kind of ball pen, the ball pen contains above-mentioned Neutral writing ink.
Compared with prior art, Neutral writing ink of the invention has the following advantages:
1. making ink have both shear thinning using specific thickening object by the viscosity construction mechanism for screening all kinds of thickeners
With the viscosity characteristics of tension stiffening.The characteristic of shear thinning ensures out of ink smooth and stable system, and the characteristic of tension stiffening makes to justify
Pearl pen core nib downward static condition when ink written place be not easy deformation, accumulation, prevent formed product ink, even break to form drop
Ink, therefore, Neutral writing ink of the invention have excellent leak resistance energy.
2. by using 0 DEG C with 25 DEG C of apparent viscosities than small thickened systems, keep ink identical in room temperature apparent viscosity
In the case of have lower low temperature apparent viscosity, avoid improve leak resistance energy while damage low temperature writing quality.Of the invention
Ink flows normally at 0 DEG C, has outstanding low temperature writing quality.
Detailed description of the invention
Fig. 1 is the apparent viscosity of Example 1 and Example 2 of the present invention and 2 ink of comparative example 1 and comparative example in shear history
With shear rate change curve.
Fig. 2 is the apparent viscosity of Example 1 and Example 2 of the present invention and 2 ink of comparative example 1 and comparative example in drawing process
With elongation strain change curve.
Specific embodiment
Below according to specific embodiment, technical scheme is described further.Protection scope of the present invention is unlimited
In following embodiment, these examples are enumerated merely for exemplary purpose without limiting the invention in any way.
By weight, black pigmented Neutral writing ink component of the invention includes: 6.0~10.0 parts by weight of pigment；It is high
1.5~3.0 parts by weight of dispersal agent molecule；Thicken 0.2~1.0 parts by weight of object；0.01~0.1 parts by weight of lubricant；Cosolvent 5.0
~10.0 parts by weight；10.0~20.0 parts by weight of moisturizer；0.1~0.3 parts by weight of fungicide；0.5~2.0 weight of pH adjusting agent
Part；And 53.6~76.7 parts by weight of deionized water.
Pigment used in the present invention does not have specific limitation, can be used commonly used in the pigment of water-based inks, specifically,
It includes inorganic pigment such as carbon black, can be used for making black neutral ink；Organic pigment such as copper phthalocyanine blue 15:1 or copper phthalocyanine blue
15:3 can be used for making neutral blue ink；Organic pigment permanent bordeaux P.R.9 or permanent bordeaux P.R.16, can be used for making red
Neutral writing ink.
Macromolecule dispersing agent used in the present invention is acrylic compounds water-soluble polymer dispersant, above-mentioned for stable dispersion
Pigment, such as Germany BASF Dispex Ultra PX 4585, Germany Bi Ke Disperbyk-2012.
Lubricant used in the present invention is in aliphatic alcohol polyoxyvinethene phosphate or alkyl phenol polyoxyethylene ether phosphate
One or more kinds of mixtures, such as aliphatic alcohol polyoxyvinethene phosphate MOA-3P (in the limited public affairs of light daily use chemicals science and technology
Department), phenolic ether phosphate TXP-4 (Zhong Qing daily use chemicals Science and Technology Ltd.).
Cosolvent used in the present invention is the mixture of one or both of propylene glycol or 1,3 butylene glycol.
Moisturizer used in the present invention is mixed for one or more of glycerine, polyethylene glycol, sorbierite, xylitol
Close object.
Fungicide used in the present invention is one of isothiazolinone substance, benzoisothiazolinone substance or two
The mixture of kind.
PH adjusting agent used in the present invention is dimethylethanolamine, in triethanolamine, triethylamine, diisopropyl ethyl amine
One or more kinds of mixtures.
Thickening object used in the present invention is the composition of non-ionic polyalcohol and acrylic thickener, and non-ionic
Polymer and the mass ratio of acrylic thickener are between 1:2~1:5.
The non-ionic straight chain that non-ionic polyalcohol in thickening object used of the invention is number-average molecular weight 20-100 ten thousand
Polymer, such as one of polyacrylamide, polyethylene glycol, polyvinyl alcohol.
When the molecular weight of above-mentioned non-ionic straight chain polymer and concentration reach a certain range, the part under thickened state
Molecular structure assigns the viscosity characteristics of Neutral writing ink tension stiffening still in curling winding state under the action of elongation strain.
The thickening mechanism of nonionic thickener is opened originally by intramolecular, intermolecular and with hydrone in system hydrogen bond action
Rolled state hinder flowing and thicken；The thickening mechanism of acrylic thickener is to be generated carboxylic after alkali neutralization using acrylic acid
Acid ion is all negatively charged, repels each other between anion, and the strong rigidity of acrylic molecules is caused to hinder flowing and thicken.It is overall and
Speech, under thickened state, non-ionic thickening agent molecular rigidity does not have that acrylic compounds are strong, when molecular weight reaches a certain level, is increasing
Molecular moiety structure still has distortion to wind under thick state, thus shows the characteristic of tension stiffening.
Specifically, tension stiffening refers under stretching action, the Neutral writing ink is apparent viscous more than viscosity turning point
Degree increases with the increase of strain, and medium viscosity turning point refers to the increase with strain, and the apparent viscosity of Neutral writing ink occurs anxious
Increase severely the point strongly reduced again greatly after i.e. yield phenomenon.Before viscosity turning point, alternatively referred to as between lower strain area, due in
The yield phenomenon of property ink, apparent viscosity first increased dramatically with the increase of strain and strongly reduce afterwards, and viscosity turning point it
Afterwards, the apparent viscosity of the Neutral writing ink with tension stiffening characteristic is then increase with strain and lasting increase.In of the invention
Property ink viscosity turning point corresponding to strain be 4.5~6.5, which is the number tested in uniaxial tensile test
According to.
The black phenomenon of the drop of ball pen or pen core product be during nib is stood downward at written the rim of a bowl ink in gravity, ink
A complex process between surface tension, ink and ball under the collective effect of interaction force, this is a tensile deformation
Rather than the process of shearing deformation.Slowly accumulation forms product ink to ink at nib under gravity stretching action, and ball is to nib product
The drippage of black pearl then occurs when being weaker than gravity for the suction-operated of ink.The viscosity characteristics of tension stiffening make ink of the invention in gravity
Apparent viscosity significantly increases the deformation for preventing ink at the rim of a bowl in drawing process, inhibits written front end product ink to be formed, shows
Excellent leak resistance energy.
The number-average molecular weight of non-ionic straight chain polymer in thickening object used of the invention is limited to ten thousand range of 20-100
Interior, when molecular weight is lower than 200,000, for obtained Neutral writing ink without obvious tension stiffening characteristic, leak resistance is general.Work as molecular weight
When more than 1,000,000, the characteristic of obtained Neutral writing ink tension stiffening is too strong, cause write when ink from ball to write boundary
Face transfer is difficult and writes bad.
At 25 DEG C, Neutral writing ink of the invention is in 1.256s-1Apparent viscosity under shear rate is 1.0~2.0Pa
S, in 12.56s-1Apparent viscosity under shear rate is 0.4~0.6Pas, and it is smooth under normal temperature environment that this is conducive to ink
Out of ink and stable system.On the other hand, make due to non-ionic polyalcohol by intermolecular, intramolecular and with the hydrogen bond of hydrone
It is thickened with realizing, acrylic thickener is other than hydrogen bond action, the molecule of the electrostatic repulsion formation of acrylic acid radical ion
Rigidity is the pith of viscosity building, compared with acrylic thickener, the viscosity temperature of non-ionic polyalcohol building
Change sensitivity is small, i.e. low temperature and viscosity change when high temperature is small.Neutral writing ink of the invention is in 0 DEG C and 25 DEG C of apparent viscosity
Than less than 2.0, i.e., under same shear rate, Neutral writing ink of the invention is less than at 25 DEG C in the apparent viscosity at 0 DEG C
2 times of apparent viscosity.Therefore, in the identical situation of room temperature apparent viscosity, apparent viscosity at 0 DEG C of Neutral writing ink of the invention
Small, ink flow is normal, has outstanding low temperature writing quality.
The type and molecular size range of acrylic thickener in thickening object used of the invention need to only expire without specific limitation
Sufficient Neutral writing ink is in 1.256s-1Apparent viscosity under shear rate is 1.0~2.0Pas, in 12.56s-1Under shear rate
Apparent viscosity is the requirement of 0.4~0.6Pas.Acrylic thickener is for further adjusting ink system in different shearings
Viscosity under rate optimizes the mobile performance of ink, makes it have outstanding writing quality.In thickening object used of the invention
Acrylic thickener can be selected from conventional base swelling type acrylic thickener, such as Tao Shi chemical industry ASE-60 thickener, BASF
Chemical industry HV30 thickener, Shenzhen Haichuan Chemical AS1130 thickener, the maritime science and technology TH-060 thickener in Nanjing or hydrophobically-modified alkali
Swelling type acrylic thickener, such as Tao Shi chemical industry TT-935 thickener, BASF chemical industry HS1152 thickener, Aksu promise shellfish
Your L-265 thickener, it is general be new material H-120 thickener.
Ball pen of the invention contains above-mentioned Neutral writing ink, and rest part can be conventional structure.
Unless otherwise defined, term used herein is the normally understood meaning of those skilled in the art.
The present invention is described in further detail by the following examples.
Embodiment
" part " in embodiment refers both to " parts by weight ".
Unless otherwise specified, preparation process or method used in embodiment are conventional method or reference literature side
Method, used material, reagent etc. are commercially available or the self-control of reference literature method.
Embodiment 1
Thicken intermediate preparation
0.7 part of triethanolamine is added in 25 parts of deionized waters under stirring, sequentially adds 0.45 part of acrylic acid
Class thickener HS1152 and 0.15 part of polyethylene glycol POLYOX WSR N-80 (number-average molecular weight 200,000), with thickener molecule
Segment is gradually opened, and system viscosity increases, and steps up speed of agitator, until system, which is uniformly mixed, is made thickening intermediate.
Mill base preparation
5.0 parts of 1,3 butylene glycols, 4.5 parts of macromolecule dispersing agent Disperbyk-2012 (40% effective concentration) are added
In 24.0 parts of deionized water, after mixing evenly, then colour carbon black Ou Li in 8.0 parts grand goth black 5 is added, continued after addition
Stirring soaks carbon black sufficiently in 2 hours, said mixture is transferred in the horizontal sand mill for being filled with 0.3mm diameter zirconium pearl,
Grinding is started the cycle over, control temperature of charge is lower than 55 DEG C in process of lapping, until partial size≤150nm, D90 of granules of pigments≤
Grinding terminates when 200nm, filters and black color paste is made.
Ink preparation
Thickening intermediate obtained is added in black color paste obtained above under stirring, after mixing evenly, then
Successively add 5.0 parts of glycerine, 10.0 parts of polyethylene glycol 200s, 0.3 part of aliphatic alcohol polyoxyvinethene phosphate MOA-9P, 0.15
Part 1,2- benzoisothiazolinone and 12.0 parts of deionized waters, continue stirring until all materials are uniformly mixed, will be above-mentioned obtained
Ink mixture 1 black ink of embodiment is made through 1000 mesh and 5000 mesh double-filtrations.
According to the formula information of table 1, using preparation process same as Example 1, be prepared embodiment 2-5 ink and
Comparative example 1-4 ink.
1 embodiment of table and comparative example ink raw material form
Wherein, POLYOX WSR N-80 is the polyethylene glycol that number-average molecular weight is 200,000, and POLYOX WSR N-12K is several
The polyethylene glycol that average molecular weight is 1,000,000, POLYOX WSR 205 are the polyethylene glycol that number-average molecular weight is 600,000, and PVA124 is
The polyvinyl alcohol that number-average molecular weight is 300,000, NPAM80 are the polyacrylamide that number-average molecular weight is 800,000, POLYOX WSR N-
10 be the polyethylene glycol that number-average molecular weight is 100,000, and POLYOX WSR N-60K is the polyethylene glycol that number-average molecular weight is 2,000,000.
Fig. 1 is that above-mentioned obtained embodiment 1 and embodiment 2 and comparative example 1 and 2 ink of comparative example are tested using rotational rheometer
Water is at 25 DEG C from 0.1-100.0s-1Apparent viscosity curve in range of shear rate, from figure 1 it appears that 1 He of embodiment
Embodiment 2 and comparative example 1 and the apparent viscosity of 2 ink of comparative example show the viscosity characteristics of shear thinning, i.e., make in shearing
Reduced with the apparent viscosity of lower Neutral writing ink with the increase of shear rate.
1.256s under 25 DEG C and 0 DEG C environment of embodiment ink and comparative example ink-1And 12.56s-1Table under shear rate
Sight viscosity is as shown in table 2, and embodiment 1-5 is with comparative example 3,4 ink of comparative example in identical shear rate (1.256s-1Or 12.56s-1) it is lower 0 DEG C with 25 DEG C of apparent viscosity than being respectively less than 2.0, and 1 ink of comparative example due to using acrylic thickener completely, right
2 ink of ratio although with the composition of acrylic thickener and non-ionic polyalcohol as thickener, but it is non-ionic
The number-average molecular weight of polymer P OLYOX WSR N-10 is smaller, thus identical shear rate (1.256s-1Or 12.56s-1) under 0
DEG C 2.0 are all larger than with 25 DEG C of apparent viscosity ratio.
25 DEG C of 2. embodiment ink of table and comparative example ink and the apparent viscosity under 0 DEG C of different shear rate
Fig. 2 is using the embodiment 1 and embodiment 2 of the silent winged generation of match your HAAKE CaBER type stretching rheometer test and right
Ratio 1 and apparent viscosity at 25 DEG C of 2 ink of comparative example with elongation strain change curve.As shown in Fig. 2, in viscosity turning point
Before, i.e., in lower strain area, there is apparent viscosity first increases and then decreases in embodiment 1-2 ink and comparative example 1-2 ink
Process, this is related with the yield phenomenon of Neutral writing ink.And after viscosity turning point, the apparent viscosity of embodiment 1-2 ink with
The increase of strain acutely increase, show its viscosity characteristics with tension stiffening, and equally strain after viscosity turning point
It gradually increases, it is constant that the apparent viscosity of comparative example 1-2 ink is then maintained at a lower value, significantly different with tension stiffening.
Embodiment ink is matched with comparative example ink and inserts the common 0.5mm ball diameter bullet type nib of lid formula ball pen
Pen core is made with the common 0.5mm ball diameter spring type nib of pressing ball pen, according to " ball-pen point is matched with ink
Inspection specifications " in regulation just write performance test is carried out to the Neutral ball-point for ball-point pen of above-mentioned preparation.
Pen core made of embodiment 1-5 ink and comparative example 1-2 ink is just write normally, and 3 ink of comparative example just writes stitching
Serious hollow, broken string, out of ink obvious unsmooth, 4 ink of comparative example is out of ink obvious bigger than normal, and stitching is dry slow.3 ink of comparative example uses
Non-ionic polyalcohol POLYOX WSR N-60K number-average molecular weight it is bigger than normal, cause the tension stiffening characteristic of ink too strong, book
Ink is hindered from ball to the transfer for writing interface during writing, can not be smooth out of ink.4 ink of comparative example only with it is non-from
Subtype polymer is as thickener, 12.56s at 25 DEG C-1The apparent viscosity of shear rate is less than 0.4Pas, and apparent viscosity is less than normal
Cause amount out of ink bigger than normal, stitching dries the bad writing experience such as slow.If, will be black by the additive amount for increasing non-ionic polyalcohol
12.56s at 25 DEG C of water-1The apparent viscosity of shear rate is improved to the range of 0.4-0.6Pas, 1.256s at 25 DEG C of ink-1
The apparent viscosity of shear rate is more than 2.0Pas.When the raising of room temperature apparent viscosity will lead to 0 DEG C apparent viscosity more substantially
Degree increases, and then damages low temperature writing quality.
Pen core made of normal embodiment 1-5 and comparative example 1-2 ink will be write and carry out further drop product performance of ink
Test and low temperature testing writing performance.
The test of product performance of ink is dripped according in QB/T 5255-2018 " ball-pen point and ink matching detection technical specification "
Regulation carry out, specific practice is: under 20-25 DEG C of environment temperature, the experimental enviroment of relative humidity 50-60%, taking 50 pens
Core pulls out after nib is vertically disposed on penholder for 24 hours downward after sheath, checks nib product ink and drips black situation.According to product ink and drop
Black ratio come judge pen core drop product performance of ink:
A) product ink --- there is ink accumulation in written inner cone part, but ink does not drip；
B) drop ink --- have under ink droplet.
Without product ink and drop ink, it is excellent for dripping product performance of ink；Without drop ink, product ink ratio≤10%, dripping product performance of ink is qualification；Have
Drop ink or the black ratio > 10% of product are unqualified.
The specific practice of low temperature testing writing performance is: taking and just draws normal pen core 5, puts on low at 0 DEG C after sheath
After being horizontally arranged 240h in warm storage box, sheath is pulled out under 0 DEG C of environment in the quantitative specification for meeting GB/T12654-2008 is
70g/m2Writing paper on cross, check whether out of ink normal.Low temperature writing quality is determined by following situations:
A) first stroke of a Chinese character, that is, out of ink is normal, and low temperature writing quality is excellent；
B) out of ink normal in 100mm, low temperature writing quality is qualification；
C) out of ink abnormal in 100mm, low temperature writing quality is unqualified.
Pen core made of embodiment 1-5 ink and comparative example 1-2 ink drips product performance of ink and low temperature testing writing performance knot
Fruit is shown in Table 3.As shown in table 3, during nib is stood downward, the ink at written the rim of a bowl is stretched slow under the action of self-weight
It is slow that deformation occurs.Deformation increases, and the apparent viscosity of comparative example 1-2 ink is in low value always, and deformation is easier to occur, finally in pen
Head front end is gathered to form product ink, and when the ink droplet of written front end is excessive, and gravity is more than its suction-operated with ball, ink droplet falls off
Form drop ink.For embodiment 1-5 ink, due to the viscosity characteristics with tension stiffening, it is anxious that deformation increases apparent viscosity
Increase severely big, tensile deformation is obstructed, and ink is difficult to further occurrence deformation, does not form product ink in written front end, shows excellent
Leak resistance energy.Embodiment 1-5 ink 0 DEG C with 25 DEG C of apparent viscosity than small, room temperature apparent viscosity close in the case where, it is real
The ink that apparent viscosity of the ink of example at 0 DEG C is significantly less than comparative example is applied, ink flow is good in 0 DEG C of writing, can
It is normal out of ink, there is better low temperature writing quality.
3 embodiment 1-5 ink of table and comparative example 1-2 ink are made pen core and drip product performance of ink and low temperature testing writing performance knot
Fruit
As known from the above, Neutral writing ink of the invention assigns ink shear thinning and stretching by using specific thickening object
The viscosity characteristics of hardening enable ink to have excellent leak resistance.Simultaneously because used specific thickening object makes 0 DEG C of ink
Apparent viscosity ratio with 25 DEG C is less than 2.0, and when the levels of viscosity needed for ensureing room temperature leak resistance, Neutral writing ink of the invention exists
Apparent viscosity at 0 DEG C is smaller, has outstanding low temperature writing quality.
Those skilled in the art should be noted that embodiment described in the invention is only exemplary, can be
Various other replacements, changes and improvements are made in the scope of the present invention.Thus, the present invention is not limited to the above embodiments, and only
It is defined by the claims.
Claims (10)
1. a kind of Neutral writing ink, which is characterized in that by weight, the Neutral writing ink consists of the following compositions:
2. Neutral writing ink according to claim 1, which is characterized in that the thickening object is non-ionic polyalcohol and propylene
The composition of Acrylic associative thickener, mass ratio is between 1:2~1:5.
3. Neutral writing ink according to claim 2, which is characterized in that the non-ionic polyalcohol is number-average molecular weight 20
~100 ten thousand non-ionic straight chain polymer.
4. Neutral writing ink according to claim 3, which is characterized in that the non-ionic polyalcohol be polyacrylamide,
One of polyethylene glycol, polyvinyl alcohol.
5. Neutral writing ink according to claim 1, which is characterized in that the macromolecule dispersing agent is the aqueous height of acrylic compounds
Dispersal agent molecule, the lubricant are one of aliphatic alcohol polyoxyvinethene phosphate or alkyl phenol polyoxyethylene ether phosphate
Or two or more mixtures, the cosolvent are the mixture of one or both of propylene glycol, 1,3-BDO, the guarantor
Humectant is the mixture of one or more of glycerine, polyethylene glycol, sorbierite, xylitol, and the fungicide is different
The mixture of one or both of thiazolinone substance or benzoisothiazolinone substance, the pH adjusting agent are diformazan
The mixture of one or more of ethylethanolamine, triethanolamine, triethylamine, diisopropyl ethyl amine.
6. Neutral writing ink according to any one of claim 1 to 5, which is characterized in that at 25 DEG C, the Neutral writing ink
In 1.256s-1Apparent viscosity under shear rate is 1.0~2.0Pas, in 12.56s-1Apparent viscosity under shear rate is
0.4~0.6Pas.
7. Neutral writing ink according to any one of claim 1 to 5, which is characterized in that described under same shear rate
Neutral writing ink is less than 2 times of the apparent viscosity at 25 DEG C in the apparent viscosity at 0 DEG C.
8. Neutral writing ink according to any one of claim 1 to 5, which is characterized in that under stretching action, the neutrality
Apparent viscosity of the ink more than viscosity turning point increases with the increase of elongation strain.
9. Neutral writing ink according to claim 8, which is characterized in that the corresponding elongation strain of the viscosity turning point is
4.5~6.5.
10. a kind of ball pen, which is characterized in that the ball pen contains the ink of neutrality described in any one of claims 1 to 9
Water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110423514A (en) * | 2019-08-06 | 2019-11-08 | 上海晨光文具股份有限公司 | A kind of black ball point ink composition of inhibition product |
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| CN108841246A (en) * | 2018-06-25 | 2018-11-20 | 太原理工大学 | The red water base neutral ink composition of graphene for thin head ball pen |
| CN109021697A (en) * | 2018-06-25 | 2018-12-18 | 太原理工大学 | A kind of preparation method of lubricious Pigment type neutral ink |
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| CN101050327A (en) * | 2006-07-14 | 2007-10-10 | 苏州三威纳米科技有限公司 | Waterproof type neutral ink with pigment in Nano level for pen, and preparation method |
| CN101812258A (en) * | 2009-02-20 | 2010-08-25 | 宜兴市育龙文化用品有限公司 | Neutral ink base material with wide application and flash neutral ink prepared by same |
| CN106905763A (en) * | 2017-03-17 | 2017-06-30 | 上海晨光文具股份有限公司 | Color type rapid-curing cutback Neutral writing ink and the ball pen containing the Neutral writing ink |
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| CN109021697A (en) * | 2018-06-25 | 2018-12-18 | 太原理工大学 | A kind of preparation method of lubricious Pigment type neutral ink |
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| CN110423514A (en) * | 2019-08-06 | 2019-11-08 | 上海晨光文具股份有限公司 | A kind of black ball point ink composition of inhibition product |
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| CN109575685B (en) | 2021-09-24 |
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