CN106752323A - The preparation method of contact panel ink special - Google Patents
The preparation method of contact panel ink special Download PDFInfo
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- CN106752323A CN106752323A CN201510832289.8A CN201510832289A CN106752323A CN 106752323 A CN106752323 A CN 106752323A CN 201510832289 A CN201510832289 A CN 201510832289A CN 106752323 A CN106752323 A CN 106752323A
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Abstract
The invention discloses the preparation method of contact panel ink special, including following operation：1）Take in the addition refiner such as appropriate polyester modification methyl phenyl silicone resin and titanium dioxide, dispersion obtains primary product；2）To appropriate OPEO, polytetrafluoroethylwax wax, polyether modified siloxane and organic silicon defoamer is added in primary product, grinding distribution obtains secondary product；3）Ink host is filtrated to get to appropriate HMMM resin, grinding distribution is added in secondary product；5）To dimethylbenzene and cyclohexanone is added in ink host, stirring obtains contact panel ink special.In the present invention, from polyester modification methyl phenyl silicone resin as link stuff, it not only has the excellent heat endurance of methyl phenyl silicone resin, also with the preferable pliability of linear polyesters.
Description
Technical field
The present invention relates to technical field of ink, more particularly, to the preparation method of contact panel ink special.
Background technology
Electronic product intellectuality is the trend of era development, and as touch screen is in the extensive use in the fields such as smart mobile phone, panel computer, touch screen industry is developed rapidly.And integrated capacitor formula touch screen（OGS）Electronic product intelligent terminal ultrathin demand can to the full extent be met, be the inevitable choice of following touch screen High Tier Brand terminal.OGS touch screen is the plating ITO conducting films in ink film layer, and because ITO coating process need to be completed under 280 DEG C ~ 300 DEG C high temperature, thus touch screen ink need to have excellent resistance to elevated temperatures.
High temperature resistant touch screen ink is main to be made up of the part such as link stuff, pigment, filler and auxiliary agent, according to the application field and performance requirement of ink, each part of ink is well mixed according to certain ratio, order, by reaching certain fineness after wetting and dispersing, grinding, then it is diluted using suitable solvent, to adjust the solid content and viscosity of ink.But, under the premise of the existing high temperature resistant ink with unorganic glass as printing ground is difficult to keep high high-temp stability preferable, while having good physical and mechanical properties and chemical-resistant reagent corrosive nature concurrently.For example, some high temperature resistant ink has good heat resistance and adhesive force, but its silk screen printing process is relatively costly, is so unfavorable for industrially being widely used；Some high temperature resistant ink be then with good resistance to chemical corrosion, adhesive force and hardness, but its heat resisting temperature is limited, hard to bear 200 DEG C of baking.
The content of the invention
The purpose of the present invention is the defect for overcoming above-mentioned prior art, there is provided the preparation method of contact panel ink special, using ink obtained in the present invention while resistance to elevated temperatures is ensured, possesses good printability and paint film property.
The purpose of the present invention is achieved through the following technical solutions：
The preparation method of contact panel ink special, including following operation：
1）Take in appropriate polyester modification methyl phenyl silicone resin, titanium dioxide and barium sulfate addition refiner, by the rotating speed grinding distribution 30min of 2000 ~ 2500r/min, obtain primary product, it is standby；
2）To operation 1）Appropriate OPEO, polytetrafluoroethylwax wax, polyether modified siloxane and organic silicon defoamer are added in the primary product of gained, by the rotating speed grinding distribution 60min of 2000 ~ 2500r/min, secondary product is obtained, it is standby；
3）To operation 2）Appropriate HMMM resin is added in the secondary product of gained, by the rotating speed grinding distribution 15min of 800 ~ 1000r/min, through 200 mesh filter screen filtering and dischargings, ink host is obtained, it is standby；
4）To operation 3）Appropriate dimethylbenzene and cyclohexanone is added in the ink host of gained, 30min is stirred by the rotating speed of 350 ~ 500r/min, obtain contact panel ink special；
The quality proportioning of each constituent of contact panel ink special is：52 ~ 68 parts of polyester modification methyl phenyl silicone resin, 25 ~ 40 parts of titanium dioxide, 2.2 ~ 5.2 parts of barium sulfate, 1.5 ~ 6 parts of dimethylbenzene, 1.5 ~ 6 parts of cyclohexanone, 1.3 ~ 6.5 parts of HMMM resin, 1 ~ 5 part of OPEO, 1 ~ 3 part of polytetrafluoroethylwax wax, 0.5 ~ 1 part of polyether modified siloxane, 0.5 ~ 1 part of organic silicon defoamer.
Link stuff is the most critical part of ink, directly decides the quality of ink coating quality.On the one hand, as the liquid components of ink, link stuff is the carrier of the fixed substances such as pigment, filler, and color stuffing is dispersed in wherein, and the scattered effect of parcel is played to color stuffing, ink is had appropriate rheological property；On the other hand, link stuff, by its drying and forming-film, enables ink paint film to be securely attached to stock surface as the main film forming substance of ink, while the physico-chemical property of link stuff also directly determines the combination property of ink film layer.For high temperature resistant ink, its link stuff must possess excellent heat resistance, so can just obtain the good ink film layer of smooth, colour retention, otherwise can then thermally decompose at high temperature, cause the bad phenomenons such as cracking ink film layer, efflorescence or discoloration.Though there can be the place of respective excellent performance due to single resin, but there are some performance deficiencies again simultaneously, thus present invention selection polyester modification methyl phenyl silicone resin is with effectively with reference to the advantage of different materials, overcome respective shortcoming, it not only has the excellent heat endurance of methyl phenyl silicone resin, also with the preferable pliability of linear polyesters.The effect of pigment is mainly covering, protection and decorates, while the various physical and chemical performances of ink film layer can also be improved, improves adhesive force and mechanical strength, hiding rare, chemical-resistant reagent stability of ink film layer etc..From titanium dioxide as pigment, it not only has high covering power, whiteness high, strong mechanical strength to the present invention, is also equipped with excellent heat resistance, high temperature colour retention, low heat conductivity.
Filler has the basic materialization property of pigment, and it can increase the heat resistance of ink film, adjusts the rheological characteristic and thixotropy of ink, improves the physical mechanical strength of film layer.The present invention is filler from barium sulfate.Because barium sulfate particle is small, can be free in reticulated void of the titanium dioxide formed in ink, and will not be with the link stuff resin chemically reactive in ink, dispersiveness of the titanium dioxide in ink can so be improved, effectively reduce chemical reagent and the destruction caused by spreading is seen through in paint film, thus as the increase of barium sulfate consumption can improve chemical reagent-resistant performance.But when adding excessive, adhesive force can be caused to decline on the contrary.Curing agent can improve the mechanical strength and chemical reagent-resistant performance of varnish.Relative to unguyed agent, the performance such as adhesive force, hardness, resistant to acetone wiping, alkali resistance of paint film is improved after addition curing agent, and present invention selection HMMM resin is used as curing agent.Selection polyether modified siloxane is mainly the rheological characteristic of regulation ink liquid as levelling agent, so that in drying and forming-film, ink coating surface can be made complete, smooth and good luster.Modified silicon class levelling agent can have good compatibility with ink varnish, and it has excellent heat resistance, low-yellowing during high temperature, while also having good surface tension adjustment, the surface tension of ink liquid can be effectively reduced, ink is had preferable wetability to ground.Bubble and foam can be produced in ink preparation, can so cause coating out-of-flatness, such as pin hole, shrinkage cavity, flake drawback occur, the present invention is by adding organic silicon defoamer to solve the above problems.With the increase of organic silicon defoamer consumption, the problems such as flake can be eliminated, but coating surface can be caused when consumption is excessive the drawbacks such as shrinkage cavity, pit occur on the contrary, thus the present invention by its quality control at 0.5 ~ 1 part.
Further, the mass fraction of organosilicon performed polymer is 62% in the polyester modification methyl phenyl silicone resin；The mass fraction of titanium dioxide is 96% in the titanium dioxide.As the increase of organosilicon performed polymer content, Si-O-Si structure protective layers are enriched with coating surface, internal structure is set not to be destroyed, thus heat endurance increase.But with the increase of organosilicon performed polymer content, coating adhesion is on a declining curve with hardness.Consider, when organosilicon performed polymer content reaches 62%, composite paint film prepared by the invention at 300 DEG C of high temperature without xanthochromia, and paint film to amplify 100 times of observation surfaces under metallographic microscope complete, without the appearance of the phenomenons such as any crackle, discoloration.Titanium dioxide mass fraction is that the oil absorption of 96% titanium dioxide is low, while average dynamics is small, this ensure that good dispersiveness, may be such that polyester modification methyl phenyl silicone resin preferably forms protective layer on its surface, and then improve resistance to thermo oxidative stability.
Further, the HMMM resin accounts for the 5% of the polyester modification methyl phenyl silicone resin quality.With the increase of HMMM resin consumption, the physical and mechanical properties and endurance of film have further raising, but the high temperature colour retention of coating declines.And when the consumption of HMMM resin accounts for the 5% of polyester modification methyl phenyl silicone resin quality, coating colour retention is excellent, physical and mechanical properties and chemical reagent-resistant performance are good.
Further, the dimethylbenzene and the mass ratio of the cyclohexanone are 1：1.
Further, the titanium dioxide and the mass ratio of the polyester modification methyl phenyl silicone resin are 0.6:1.Relatively low pigment can improve ink adhesion, endurance and resistance to chalking etc.；Pigment higher can improve the covering power of ink, using when can reduce the consumption of ink.When pigment is 0.6:When 1, preferably, adhesive force is 0 grade to white ink covering power, and hardness is 4H, and, without coming off, without curling, resistance to ITO etching solutions 2h is unchanged, and 1.5h is toasted at 300 DEG C of high temperature resistant without xanthochromia without cracking for water boiling resistance 1h.
Further, the fineness of the barium sulfate is 300nm.
To realize preferable combination property, further, the quality proportioning of each constituent of contact panel ink special is：60 parts of polyester modification methyl phenyl silicone resin, 36 parts of titanium dioxide, 2.5 parts of barium sulfate, 1.8 parts of dimethylbenzene, 1.8 parts of cyclohexanone, 1.3 ~ 6.5 parts of HMMM resin, 2 parts of OPEO, 1.5 parts of polytetrafluoroethylwax wax, 0.8 part of polyether modified siloxane, 0.6 part of organic silicon defoamer.
Further, the organic silicon defoamer is modified polyorganosiloxane.In the present invention, modified polyorganosiloxane contains aerosil composition can make defoaming capacity be strengthened, specific mechanism is that the bimolecular film layer of bubble can not soak aerosil solids, causes its local surface tension unstable and causes bimolecular film layer to rupture.
The invention has the advantages that：Using printing ink paint obtained in the present invention while resistance to elevated temperatures is ensured, possess good printability and paint film property.Wherein, from polyester modification methyl phenyl silicone resin as link stuff, it not only has the excellent heat endurance of methyl phenyl silicone resin, also with the preferable pliability of linear polyesters.From titanium dioxide as pigment, it not only has high covering power, whiteness high, strong mechanical strength, is also equipped with excellent heat resistance, high temperature colour retention, low heat conductivity.It is filler from barium sulfate, increases the heat resistance of ink film, adjusts the rheological characteristic and thixotropy of ink.From dimethylbenzene and cyclohexanone as solvent, can further improve the performances such as varnish viscosity, drying varniss speed, levelability, glossiness, adhesive force.From HMMM resin as curing agent, the performances such as adhesive force, hardness, resistant to acetone wiping, the alkali resistance of varnish can be improved.It is mainly the rheological characteristic of regulation ink liquid as levelling agent from polyether modified siloxane, so that in drying and forming-film, ink coating surface can be made complete, smooth and good luster.From modified polyorganosiloxane as organic silicon defoamer, the problems such as can preferably improve coating out-of-flatness, pin hole, shrinkage cavity, flake.
Specific embodiment
With reference to embodiment, the present invention is described in further detail, but embodiments of the present invention not limited to this.
Embodiment 1
The preparation method of contact panel ink special, including following operation：
1）Take in appropriate polyester modification methyl phenyl silicone resin, titanium dioxide and barium sulfate addition refiner, by the rotating speed grinding distribution 30min of 2000 ~ 2500r/min, obtain primary product, it is standby；
2）To operation 1）Appropriate OPEO, polytetrafluoroethylwax wax, polyether modified siloxane and organic silicon defoamer are added in the primary product of gained, by the rotating speed grinding distribution 60min of 2000 ~ 2500r/min, secondary product is obtained, it is standby；
3）To operation 2）Appropriate HMMM resin is added in the secondary product of gained, by the rotating speed grinding distribution 15min of 800 ~ 1000r/min, through 200 mesh filter screen filtering and dischargings, ink host is obtained, it is standby；
4）To operation 3）Appropriate dimethylbenzene and cyclohexanone is added in the ink host of gained, 30min is stirred by the rotating speed of 350 ~ 500r/min, obtain contact panel ink special；
The quality proportioning of each constituent of contact panel ink special is：52 ~ 68 parts of polyester modification methyl phenyl silicone resin, 25 ~ 40 parts of titanium dioxide, 2.2 ~ 5.2 parts of barium sulfate, 1.5 ~ 6 parts of dimethylbenzene, 1.5 ~ 6 parts of cyclohexanone, 1.3 ~ 6.5 parts of HMMM resin, 1 ~ 5 part of OPEO, 1 ~ 3 part of polytetrafluoroethylwax wax, 0.5 ~ 1 part of polyether modified siloxane, 0.5 ~ 1 part of organic silicon defoamer.
Link stuff is the most critical part of ink, directly decides the quality of ink coating quality.On the one hand, as the liquid components of ink, link stuff is the carrier of the fixed substances such as pigment, filler, and color stuffing is dispersed in wherein, and the scattered effect of parcel is played to color stuffing, ink is had appropriate rheological property；On the other hand, link stuff, by its drying and forming-film, enables ink paint film to be securely attached to stock surface as the main film forming substance of ink, while the physico-chemical property of link stuff also directly determines the combination property of ink film layer.For high temperature resistant ink, its link stuff must possess excellent heat resistance, so can just obtain the good ink film layer of smooth, colour retention, otherwise can then thermally decompose at high temperature, cause the bad phenomenons such as cracking ink film layer, efflorescence or discoloration.Though there can be the place of respective excellent performance due to single resin, but there are some performance deficiencies again simultaneously, thus present invention selection polyester modification methyl phenyl silicone resin is with effectively with reference to the advantage of different materials, overcome respective shortcoming, it not only has the excellent heat endurance of methyl phenyl silicone resin, also with the preferable pliability of linear polyesters.The effect of pigment is mainly covering, protection and decorates, while the various physical and chemical performances of ink film layer can also be improved, improves adhesive force and mechanical strength, hiding rare, chemical-resistant reagent stability of ink film layer etc..From titanium dioxide as pigment, it not only has high covering power, whiteness high, strong mechanical strength to the present invention, is also equipped with excellent heat resistance, high temperature colour retention, low heat conductivity.
Filler has the basic materialization property of pigment, and it can increase the heat resistance of ink film, adjusts the rheological characteristic and thixotropy of ink, improves the physical mechanical strength of film layer.The present invention is filler from barium sulfate.Because barium sulfate particle is small, can be free in reticulated void of the titanium dioxide formed in ink, and will not be with the link stuff resin chemically reactive in ink, dispersiveness of the titanium dioxide in ink can so be improved, effectively reduce chemical reagent and the destruction caused by spreading is seen through in paint film, thus as the increase of barium sulfate consumption can improve chemical reagent-resistant performance.But when adding excessive, adhesive force can be caused to decline on the contrary.Curing agent can improve the mechanical strength and chemical reagent-resistant performance of varnish.Relative to unguyed agent, the performance such as adhesive force, hardness, resistant to acetone wiping, alkali resistance of paint film is improved after addition curing agent, and present invention selection HMMM resin is used as curing agent.Selection polyether modified siloxane is mainly the rheological characteristic of regulation ink liquid as levelling agent, so that in drying and forming-film, ink coating surface can be made complete, smooth and good luster.Modified silicon class levelling agent can have good compatibility with ink varnish, and it has excellent heat resistance, low-yellowing during high temperature, while also having good surface tension adjustment, the surface tension of ink liquid can be effectively reduced, ink is had preferable wetability to ground.Bubble and foam can be produced in ink preparation, can so cause coating out-of-flatness, such as pin hole, shrinkage cavity, flake drawback occur, the present invention is by adding organic silicon defoamer to solve the above problems.With the increase of organic silicon defoamer consumption, the problems such as flake can be eliminated, but coating surface can be caused when consumption is excessive the drawbacks such as shrinkage cavity, pit occur on the contrary, thus the present invention by its quality control at 0.5 ~ 1 part.
Preferably, the mass fraction of organosilicon performed polymer is 62% in the polyester modification methyl phenyl silicone resin；The mass fraction of titanium dioxide is 96% in the titanium dioxide.As the increase of organosilicon performed polymer content, Si-O-Si structure protective layers are enriched with coating surface, internal structure is set not to be destroyed, thus heat endurance increase.But with the increase of organosilicon performed polymer content, coating adhesion is on a declining curve with hardness.Consider, when organosilicon performed polymer content reaches 62%, composite paint film prepared by the invention at 300 DEG C of high temperature without xanthochromia, and paint film to amplify 100 times of observation surfaces under metallographic microscope complete, without the appearance of the phenomenons such as any crackle, discoloration.Titanium dioxide mass fraction is that the oil absorption of 96% titanium dioxide is low, while average dynamics is small, this ensure that good dispersiveness, may be such that polyester modification methyl phenyl silicone resin preferably forms protective layer on its surface, and then improve resistance to thermo oxidative stability.
Preferably, the HMMM resin accounts for the 5% of the polyester modification methyl phenyl silicone resin quality.With the increase of HMMM resin consumption, the physical and mechanical properties and endurance of film have further raising, but the high temperature colour retention of coating declines.And when the consumption of HMMM resin accounts for the 5% of polyester modification methyl phenyl silicone resin quality, coating colour retention is excellent, physical and mechanical properties and chemical reagent-resistant performance are good.
Preferably, the dimethylbenzene and the mass ratio of the cyclohexanone are 1：1.
Preferably, the titanium dioxide and the mass ratio of the polyester modification methyl phenyl silicone resin are 0.6:1.Relatively low pigment can improve ink adhesion, endurance and resistance to chalking etc.；Pigment higher can improve the covering power of ink, using when can reduce the consumption of ink.When pigment is 0.6:When 1, preferably, adhesive force is 0 grade to white ink covering power, and hardness is 4H, and, without coming off, without curling, resistance to ITO etching solutions 2h is unchanged, and 1.5h is toasted at 300 DEG C of high temperature resistant without xanthochromia without cracking for water boiling resistance 1h.
Preferably, the fineness of the barium sulfate is 300nm.
To realize preferable combination property, it is preferable that the quality proportioning of each constituent of contact panel ink special is：60 parts of polyester modification methyl phenyl silicone resin, 36 parts of titanium dioxide, 2.5 parts of barium sulfate, 1.8 parts of dimethylbenzene, 1.8 parts of cyclohexanone, 1.3 ~ 6.5 parts of HMMM resin, 2 parts of OPEO, 1.5 parts of polytetrafluoroethylwax wax, 0.8 part of polyether modified siloxane, 0.6 part of organic silicon defoamer.
Preferably, the organic silicon defoamer is modified polyorganosiloxane.In the present embodiment, modified polyorganosiloxane contains aerosil composition can make defoaming capacity be strengthened, specific mechanism is that the bimolecular film layer of bubble can not soak aerosil solids, causes its local surface tension unstable and causes bimolecular film layer to rupture.
Above content is to combine the further description that specific preferred embodiment is made to the present invention, it is impossible to assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, the other embodiment drawn in the case where technical scheme is not departed from should be included within the scope of the present invention.
Claims (8)
1. the preparation method of contact panel ink special, it is characterised in that：
Including following operation：
1）Take in appropriate polyester modification methyl phenyl silicone resin, titanium dioxide and barium sulfate addition refiner, by the rotating speed grinding distribution 30min of 2000 ~ 2500r/min, obtain primary product, it is standby；
2）To operation 1）Appropriate OPEO, polytetrafluoroethylwax wax, polyether modified siloxane and organic silicon defoamer are added in the primary product of gained, by the rotating speed grinding distribution 60min of 2000 ~ 2500r/min, secondary product is obtained, it is standby；
3）To operation 2）Appropriate HMMM resin is added in the secondary product of gained, by the rotating speed grinding distribution 15min of 800 ~ 1000r/min, through 200 mesh filter screen filtering and dischargings, ink host is obtained, it is standby；
4）To operation 3）Appropriate dimethylbenzene and cyclohexanone is added in the ink host of gained, 30min is stirred by the rotating speed of 350 ~ 500r/min, obtain contact panel ink special；
The quality proportioning of each constituent of contact panel ink special is：52 ~ 68 parts of polyester modification methyl phenyl silicone resin, 25 ~ 40 parts of titanium dioxide, 2.2 ~ 5.2 parts of barium sulfate, 1.5 ~ 6 parts of dimethylbenzene, 1.5 ~ 6 parts of cyclohexanone, 1.3 ~ 6.5 parts of HMMM resin, 1 ~ 5 part of OPEO, 1 ~ 3 part of polytetrafluoroethylwax wax, 0.5 ~ 1 part of polyether modified siloxane, 0.5 ~ 1 part of organic silicon defoamer.
2. the preparation method of contact panel ink special according to claim 1, it is characterised in that：The mass fraction of organosilicon performed polymer is 62% in the polyester modification methyl phenyl silicone resin；The mass fraction of titanium dioxide is 96% in the titanium dioxide.
3. the preparation method of contact panel ink special according to claim 1, it is characterised in that：The HMMM resin accounts for the 5% of the polyester modification methyl phenyl silicone resin quality.
4. the preparation method of contact panel ink special according to claim 1, it is characterised in that：The dimethylbenzene is 1 with the mass ratio of the cyclohexanone：1.
5. the preparation method of contact panel ink special according to claim 1, it is characterised in that：The titanium dioxide is 0.6 with the mass ratio of the polyester modification methyl phenyl silicone resin:1.
6. the preparation method of contact panel ink special according to claim 1, it is characterised in that：The fineness of the barium sulfate is 300nm.
7. the preparation method of contact panel ink special according to claim 1, it is characterised in that：The quality proportioning of each constituent of contact panel ink special is：60 parts of polyester modification methyl phenyl silicone resin, 36 parts of titanium dioxide, 2.5 parts of barium sulfate, 1.8 parts of dimethylbenzene, 1.8 parts of cyclohexanone, 1.3 ~ 6.5 parts of HMMM resin, 2 parts of OPEO, 1.5 parts of polytetrafluoroethylwax wax, 0.8 part of polyether modified siloxane, 0.6 part of organic silicon defoamer.
8. the preparation method of the contact panel ink special according to any one in claim 1 ~ 7, it is characterised in that：The organic silicon defoamer is modified polyorganosiloxane.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109370300A (en) * | 2018-10-31 | 2019-02-22 | 深圳市金达盛化工有限公司 | A kind of touch display screen ink |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109370300A (en) * | 2018-10-31 | 2019-02-22 | 深圳市金达盛化工有限公司 | A kind of touch display screen ink |
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Application publication date: 20170531 |