CN103351842A - Pressure-sensitive adhesion agent for silk screen glass polaroid and silk screen glass polaroid - Google Patents
Pressure-sensitive adhesion agent for silk screen glass polaroid and silk screen glass polaroid Download PDFInfo
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- CN103351842A CN103351842A CN2013103255188A CN201310325518A CN103351842A CN 103351842 A CN103351842 A CN 103351842A CN 2013103255188 A CN2013103255188 A CN 2013103255188A CN 201310325518 A CN201310325518 A CN 201310325518A CN 103351842 A CN103351842 A CN 103351842A
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Abstract
The invention discloses a pressure-sensitive adhesion agent for a silk screen glass polaroid, which comprises a pressure-sensitive adhesive, a bridging agent, a glass coupling agent, a weather-proof additive and a tackifier, wherein the weight ratio of the bridging agent and the pressure-sensitive adhesive is 0.2 % to 1.0 %; the weight ratio of the glass coupling agent and the pressure-sensitive adhesive is 0.02% to 0.5 %; the weight ratio of the tackifier and the pressure-sensitive adhesive is 0.05% to 5.0%. Compared with condition that the pressure-sensitive adhesion agent in the prior art is hardly suitable for the silk screen glass, the pressure-sensitive adhesion agent, provided by the invention, has the advantages that through the addition of hydrogenated abietin as the tackifier, the tackifier reacts with the bridging agent, the coupling agent and the like to generate a functional group with good affinity with printing ink, so that the adhesive degree of the pressure-sensitive adhesion agent and the LCD glass silk screen layer is enhanced, large bubbles formed between the bottom of the silk screen layer and the LCD glass surface are avoided, and the defoaming effect of the product is good. The invention further provides the silk screen glass polaroid with the pressure-sensitive adhesion agent.
Description
Technical field
The present invention relates to the optical polarization component manufacturing technology field, relate in particular to a kind of silk printing glass polaroid with pressure sensitive adhesive and silk printing glass polaroid.
Background technology
Polaroid is applicable to the multiple electro-luminescence display devices such as liquid-crystal display, plasma display, and it is on glass that it generally is bonded in LCD by binding agent.At present, common LCD glass is the light face, and the binding agent between itself and the polaroid is with pressure sensitive adhesive (PSA, Pressure sensitive adhesive) former glue successively adds bridging agent according to a certain percentage, weather-proof additive, glass coupling additive, diluting solvents etc. stir and make.During actual bonding, first binding agent is coated on the release film, then dries through oven heat together with release film, it is on glass to be fitted in LCD with the polaroid of binding agent at last.
Yet, in order to obtain better display effect, also have some LCD glass itself to have the ink silk screen printing such as pattern, form, literal.These ink silk screen printing consist of projection at the LCD glass surface usually.At this moment, adopt existing this binding agent and adhesive method, tend to form between projection bottom and LCD glass surface and fill the space, cause product froth breaking difficulty, it is bad product to occur easily, affects result of use.
Summary of the invention
For the defective that exists in the prior art, the present invention adjusts the pressure sensitive adhesion agent prescription, make pressure sensitive adhesive both kept original, and polaroid and liquid-crystalline glasses between clinging power and weather resistance, increase again and ink silk screen printing between clinging power, avoid air pocket to produce, solve the froth breaking hard problem.
The present invention also provides a kind of silk printing glass polaroid that comprises above-mentioned pressure sensitive adhesive layer.
For reaching above purpose, the present invention adopts following technical scheme.
A kind of silk printing glass polaroid pressure sensitive adhesive is characterized in that it comprises: pressure sensitive adhesive, and bridging agent, the glass couplant, weather-proof additive and tackifier, wherein,
The weight ratio of described bridging agent and pressure sensitive adhesive is: 0.2%～1.0%;
The weight ratio of described glass couplant and pressure sensitive adhesive is: 0.02%～0.5%;
The weight ratio of described weather-proof additive and pressure sensitive adhesive is: 0.01%～0.1%;
The weight ratio of described tackifier and pressure sensitive adhesive is: 0.05%～5.0%.
As a kind of preferred embodiment, described pressure sensitive adhesive be molecular weight between 800,000 to 1,000,000, solid content between 27% to 29%, the pressure sensitive adhesive of viscosity between 4500cps to 6000cps.
As a kind of preferred embodiment, described bridging agent is polymeric polyisocyanate, contain one or more in epoxy-functional bridging agent, the containing metal huge legendary turtle compound bridging agent; This bridging agent adding proportion between pressure sensitive adhesive weight 0.21%～0.84% between.
As a kind of preferred embodiment, described glass couplant is silane coupling agent, described silane coupling agent is any in methyltrimethoxy silane, Union carbide A-162, γ-aminopropyl triethoxysilane, γ-aminopropyltrimethoxysilane or γ-aminopropyl methyl dimethoxysilane, this glass couplant adding proportion between pressure sensitive adhesive weight 0.05%～0.07% between.
As a kind of preferred embodiment, described weather-proof additive is epoxy type
Bridging agent, the addition of described weather-proof additive are 0.03% of pressure sensitive adhesive weight.
As a kind of preferred embodiment, described tackifier are one or more in ester gum, modified rosin resin, hydrogenated rosin glyceride, the staybelite fat; This tackifier adding proportion between pressure sensitive adhesive weight 1.0%～2.8% between.
The present invention also provides a kind of silk printing glass polaroid, it is characterized in that, has the pressure sensitive adhesive layer of above-mentioned pressure sensitive adhesive between silk printing glass and polaroid.
As a kind of preferred embodiment, the thickness of described pressure sensitive adhesive layer is between 20 μ m-25 μ m.
As a kind of preferred embodiment, between the silk-screen layer bottom of pressure sensitive adhesive layer and silk printing glass, has largest interval less than or equal to the clearance of 30 μ m, the joint face indent of described clearance and pressure sensitive adhesive layer.
As a kind of preferred embodiment, in the bonding process, pressure sensitive adhesive is through the High Temperature High Pressure defoaming treatment, and described High Temperature High Pressure defoaming treatment condition is: 50 ℃ * 5kg/cm
2* 20min.
Compared with prior art, a kind of silk printing glass polaroid pressure sensitive adhesive provided by the invention, by adding staybelite as tackifier, the reaction such as tackifier and bridging agent, coupling agent generates the functional group good with the printing ink affinity, on the engaging force basis that keeps between pressure sensitive adhesive and liquid-crystalline glasses, the polaroid, increase the engaging force between glue and the silk-screen layer, thereby reach the froth breaking purpose, the product deaeration is effective.Through a large amount of tests, its various performances are as follows:
Especially, be epoxy type at weather-proof additive
Under the established condition of bridging agent, other bridging agent addition can suitably reduce, to take into account weathering resistance and cutting property.
In addition, when the molecular weight of pressure sensitive adhesive between 800,000 to 1,000,000, solid content is between 27% to 29%, viscosity is between between the 4500cps to 6000cps; The bridging agent adding proportion between pressure sensitive adhesive weight 0.21%～0.84% between; Glass couplant adding proportion between pressure sensitive adhesive weight 0.05%～0.07% between; The tackifier adding proportion between pressure sensitive adhesive weight 1.0%～2.8% between the time; The pressure sensitive adhesive performance that obtains is far superior to the relevant industries standard, the Qi Pao after polaroid and silk printing glass are fitted＜=20 μ m, and bubble surface is concavity, weather-proof (80 ℃ * 500hr; 60 ℃ * 90% * 500hr) property retention is constant.
A kind of polaroid with above-mentioned pressure-sensitive adhesive mixture provided by the invention, by with the thickness limits of pressure sensitive adhesive layer between 20 μ m-25 μ m, be convenient to control the generation of clearance.Simultaneously, because the largest interval between bottom the silk-screen layer of pressure sensitive adhesive layer and silk printing glass is less than or equal to 30 μ m, and the joint face indent of clearance and pressure sensitive adhesive layer, avoid the clearance that the result of use of polaroid is brought impact.Especially, by adopting: 50 ℃ * 5kg/cm
2The High Temperature High Pressure froth breaking condition of * 20min, when guaranteeing pressure sensitive adhesive and silk printing glass, polaroid adhesive property, clearance between also bottom the ink silk screen printing layer of effective inhibition and elimination pressure sensitive adhesive layer and silk printing glass, reach clinging power between increase and the ink silk screen printing, the purpose of avoiding air pocket to produce.
Description of drawings
Figure 1 shows that existing pressure sensitive adhesive and silk-screen layer actual adhesion design sketch;
Figure 2 shows that pressure sensitive adhesive provided by the invention and silk-screen layer actual adhesion design sketch;
Figure 3 shows that silk printing glass polaroid structure synoptic diagram provided by the invention.
Description of reference numerals:
1, silk printing glass, 2, polaroid, 3, pressure sensitive adhesive layer, 4, the clearance,
11, silk-screen layer.
Embodiment
For further setting forth essence of the present invention, the below is described in detail the specific embodiment of the present invention, but is not limited to embodiment.
Pressure-sensitive adhesive mixture embodiment
A kind of silk printing glass polaroid pressure sensitive adhesive, it comprises: pressure sensitive adhesive, weather-proof additive, bridging agent, glass couplant and tackifier.During actual fabrication, ratio is successively added bridging agent in the former glue of pressure sensitive adhesive, weather-proof additive, and glass coupling additive, diluting solvent also stirs.In the present embodiment, the molecular weight of preferred pressure sensitive adhesive is 800,000, solid content 27%, and viscosity is 4500cps.Preferred diluting solvent is ethyl acetate, and the weight ratio of itself and pressure sensitive adhesive is 15%.Preferred weather-proof additive is epoxy curing agent, and the weight ratio of itself and pressure sensitive adhesive is 0.05%.Preferred bridging agent is the bridging agent that contains epoxy-functional, and the weight ratio of itself and pressure sensitive adhesive is 0.21%.The preferred glass couplant is silane coupling agent, and the weight ratio of itself and pressure sensitive adhesive is 0.05%.Preferred tackifier are staybelite fat, and the weight ratio of itself and pressure sensitive adhesive is 1.0%.
The situation that is difficult to be applicable to silk printing glass with respect to pressure sensitive adhesive of the prior art, the pressure sensitive adhesive that present embodiment provides is by adding staybelite fat as tackifier, make the reactions such as staybelite fat and bridging agent, coupling agent generate the functional group good with the printing ink affinity, and then the caking ability of raising pressure sensitive adhesive and LCD glass silk screen printing layer, form large bubble when avoiding the pressure sensitive adhesive bonding between silk-screen layer bottom and LCD glass surface, the product deaeration is effective.Through a large amount of tests, the pressure sensitive adhesive that present embodiment provides also is being better than prior art aspect high temperature resistant, anti-high humidity, cold-hot impact, viscous force, the Air Bubble Size, and its various test case are as follows:
As a kind of conversion embodiment of present embodiment, the selection of described pressure sensitive adhesive, the weight ratio of described bridging agent, glass couplant, tackifier and pressure sensitive adhesive is suitably adjusted.Such as:
Electing pressure sensitive adhesive as molecular weight is 1,000,000, and solid content is 29%, and viscosity is the pressure sensitive adhesive of 6000cps;
The weight ratio of bridging agent and pressure sensitive adhesive is adjusted to 0.84%;
The weight ratio of glass couplant and pressure sensitive adhesive is adjusted to 0.07%;
The weight ratio of tackifier and pressure sensitive adhesive is adjusted to 2.8%;
Elect weather-proof additive as epoxy type
Bridging agent is adjusted to 0.03% with the weight ratio of weather-proof additive and pressure sensitive adhesive.Especially, be epoxy type at weather-proof additive
Established condition under, other bridging agent additions suitably reduce, and avoid the excessive interpolation of bridging agent, to take into account weathering resistance and cutting property.
In other embodiments, described pressure sensitive adhesive is 100,000 to 1,000,000 at molecular weight, and solid content is 16% to 29%, and viscosity is to select arbitrarily in the pressure sensitive adhesive between the 2000cps to 8000cps.Described bridging agent is polymeric polyisocyanate, contain one or more in the bridging agent of the bridging agent of epoxy-functional, containing metal huge legendary turtle compound; The bridging agent adding proportion is 0.2%～1.0% of pressure sensitive adhesive weight.Described glass coupler is a kind of in methyltrimethoxy silane, Union carbide A-162, γ-aminopropyl triethoxysilane, γ-aminopropyltrimethoxysilane, the γ-aminopropyl methyl dimethoxysilane; Glass couplant adding proportion is 0.02%～0.5% of pressure sensitive adhesive weight.Described tackifier are one or more in ester gum, modified rosin resin, hydrogenated rosin glyceride, the staybelite fat; The tackifier adding proportion is 0.05%～5.0% of pressure sensitive adhesive weight.Described diluting solvent is one or more in toluene, butanone, the ethyl acetate, and the diluting solvent addition is 7%～25% of pressure sensitive adhesive weight.Described weather-proof additive is made into first 1%～10% solution, its addition pressure sensitive adhesive weight 0.01%～0.1% between select arbitrarily; Be not limited to present embodiment.
By great many of experiments test, when the molecular weight of pressure sensitive adhesive between 800,000 to 1,000,000, solid content is between 27% to 29%, viscosity is between between the 4500cps to 6000cps;
The bridging agent adding proportion between pressure sensitive adhesive weight 0.21%～0.84% between;
Glass couplant adding proportion between pressure sensitive adhesive weight 0.05%～0.07% between;
The tackifier adding proportion between pressure sensitive adhesive weight 1.0%～2.8% between the time;
The pressure sensitive adhesive performance that obtains is far superior to the relevant industries standard, and the bubble maximum clearance is reduced to 20 μ m behind the polaroid glue surface plaster silk-screen, and bubble surface is concavity, weather-proof (80 ℃ * 500hr; 60 ℃ * 90% * 500hr) property retention is constant.As shown in Figure 2, it has chosen a kind of pressure sensitive adhesive result of use figure that scope according to the above ratio makes, and picture is by 50 times of amplifications.From Fig. 2, we are difficult to find obvious bubble; And from the existing pressure sensitive adhesive result of use figure of Fig. 1, we can see, the interval of bubble is local even surpassed 450 μ m at some, and bubble is outer gibbosity, affect the polaroid result of use.
Polaroid embodiment
As shown in Figure 3, a kind of silk printing glass polaroid with pressure sensitive adhesive is characterized in that, has the pressure sensitive adhesive layer 3 of above-mentioned pressure sensitive adhesive between silk printing glass 1 and polaroid 2.
Wherein, the thickness of described pressure sensitive adhesive layer 3 is between 20 μ m-25 μ m; Between silk-screen layer 11 bottoms of pressure sensitive adhesive layer 3 and silk printing glass 1, has largest interval less than or equal to the clearance 4 of 30 μ m, the joint face indent of described clearance 4 and pressure sensitive adhesive layer 3.
In prior art, the clearance between the silk-screen layer of pressure sensitive adhesive layer and the silk printing glass bottom is large, and the clearance is outer gibbosity, affects the defective of result of use; Pressure-sensitive adhesive mixture provided by the invention, concrete when bonding, the clearance 4 between silk-screen layer 11 bottoms of itself and silk printing glass 1 is less, and clearance 4 is inner concavity, does not affect result of use; By the great many of experiments test, clearance 4 at this moment is in 30 μ m.
More specifically, when reality used pressure sensitive adhesive provided by the invention to bond, pressure sensitive adhesive must be through the High Temperature High Pressure defoaming treatment after fitting, and described High Temperature High Pressure defoaming treatment condition is: 50 ℃ * 5kg/cm
2* 20min.By this High Temperature High Pressure defoaming treatment, when guaranteeing pressure sensitive adhesive and silk printing glass, polaroid adhesive property, clearance between also bottom effective inhibition and elimination pressure sensitive adhesive layer and the silk printing glass silk-screen layer, reach clinging power between increase and the ink silk screen printing, the purpose of avoiding air pocket to produce.
Above embodiment has been described in detail essence of the present invention, but can not come protection scope of the present invention is limited with this.Apparently; under the enlightenment of essence of the present invention; the art those of ordinary skill also can carry out many improvement and modification, and simple modifications, modification or the equivalent transformation in every case done according to the present invention's essence all drop within the claim protection domain of the present invention.
Claims (10)
1. silk printing glass polaroid pressure sensitive adhesive is characterized in that it comprises: pressure sensitive adhesive, and bridging agent, the glass couplant, weather-proof additive and tackifier, wherein,
The weight ratio of described bridging agent and pressure sensitive adhesive is: 0.2%～1.0%;
The weight ratio of described glass couplant and pressure sensitive adhesive is: 0.02%～0.5%;
The weight ratio of described weather-proof additive and pressure sensitive adhesive is: 0.01%～0.1%;
The weight ratio of described tackifier and pressure sensitive adhesive is: 0.05%～5.0%.
2. a kind of silk printing glass polaroid pressure sensitive adhesive according to claim 1 is characterized in that, described pressure sensitive adhesive be molecular weight between 800,000 to 1,000,000, solid content between 27% to 29%, the pressure sensitive adhesive of viscosity between 4500cps to 6000cps.
3. a kind of silk printing glass polaroid pressure sensitive adhesive according to claim 1 is characterized in that, described bridging agent is polymeric polyisocyanate, contain one or more in epoxy-functional bridging agent, the containing metal huge legendary turtle compound bridging agent; This bridging agent adding proportion between pressure sensitive adhesive weight 0.21%～0.84% between.
4. a kind of silk printing glass polaroid pressure sensitive adhesive according to claim 1, it is characterized in that, described glass couplant is silane coupling agent, described silane coupling agent is any in methyltrimethoxy silane, Union carbide A-162, γ-aminopropyl triethoxysilane, γ-aminopropyltrimethoxysilane or γ-aminopropyl methyl dimethoxysilane, this glass couplant adding proportion between pressure sensitive adhesive weight 0.05%～0.07% between.
5. a kind of silk printing glass polaroid pressure sensitive adhesive according to claim 1 is characterized in that, described tackifier are one or more of ester gum, modified rosin resin, hydrogenated rosin glyceride, staybelite fat; This tackifier adding proportion between pressure sensitive adhesive weight 1.0%～2.8% between.
6. a kind of silk printing glass polaroid pressure sensitive adhesive according to claim 1 is characterized in that described weather-proof additive is the epoxy type bridging agent, and the addition of described weather-proof additive is 0.03% of pressure sensitive adhesive weight.
7. a silk printing glass polaroid is characterized in that, has the as claimed in claim 1 pressure sensitive adhesive layer of pressure sensitive adhesive between silk printing glass and polaroid.
8. the silk printing glass polaroid with pressure sensitive adhesive according to claim 7 is characterized in that, the thickness of described pressure sensitive adhesive layer is between 20 μ m-25 μ m.
9. the silk printing glass polaroid with pressure sensitive adhesive according to claim 7, it is characterized in that, between the silk-screen layer bottom of pressure sensitive adhesive layer and silk printing glass, has largest interval less than or equal to the clearance of 30 μ m, the joint face indent of described clearance and pressure sensitive adhesive layer.
10. the silk printing glass polaroid with pressure sensitive adhesive according to claim 7 is characterized in that, in the bonding process, pressure sensitive adhesive is through the High Temperature High Pressure defoaming treatment, and described High Temperature High Pressure defoaming treatment condition is: 50 ℃ * 5kg/cm
2* 20min.
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| CN201310325518.8A CN103351842B (en) | 2013-07-30 | 2013-07-30 | A kind of silk printing glass polaroid pressure sensitive adhesive and silk printing glass polaroid |
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| CN111273389A (en) * | 2020-04-02 | 2020-06-12 | 佛山纬达光电材料股份有限公司 | Low-cost high weatherability's polaroid for on-vehicle display |
| CN111290067A (en) * | 2020-04-02 | 2020-06-16 | 佛山纬达光电材料股份有限公司 | Polaroid for wide-viewing-angle liquid crystal display |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111273389A (en) * | 2020-04-02 | 2020-06-12 | 佛山纬达光电材料股份有限公司 | Low-cost high weatherability's polaroid for on-vehicle display |
| CN111290067A (en) * | 2020-04-02 | 2020-06-16 | 佛山纬达光电材料股份有限公司 | Polaroid for wide-viewing-angle liquid crystal display |
| CN111273389B (en) * | 2020-04-02 | 2022-05-06 | 佛山纬达光电材料股份有限公司 | Low-cost high weatherability's polaroid for on-vehicle display |
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Address after: 528100 Southwest Industrial Park, Sanshui District, Foshan City, Guangdong Province Patentee after: Foshan Weida photoelectric material Limited by Share Ltd Address before: 528100 Southwest Industrial Park, Sanshui District, Foshan City, Guangdong Province Patentee before: Winda Opto-Electronic Co., Ltd. |