CN111925742B - Coating glue and preparation method and application thereof - Google Patents
Coating glue and preparation method and application thereof Download PDFInfo
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- CN111925742B CN111925742B CN202010782612.6A CN202010782612A CN111925742B CN 111925742 B CN111925742 B CN 111925742B CN 202010782612 A CN202010782612 A CN 202010782612A CN 111925742 B CN111925742 B CN 111925742B
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- 239000003292 glue Substances 0.000 title claims abstract description 107
- 239000011248 coating agent Substances 0.000 title claims abstract description 54
- 238000000576 coating method Methods 0.000 title claims abstract description 54
- 238000002360 preparation method Methods 0.000 title abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 37
- 125000004494 ethyl ester group Chemical group 0.000 claims abstract description 29
- 239000000203 mixture Substances 0.000 claims abstract description 24
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 23
- 239000000654 additive Substances 0.000 claims abstract description 19
- 230000000996 additive effect Effects 0.000 claims abstract description 14
- 239000000758 substrate Substances 0.000 claims abstract description 9
- 229920001285 xanthan gum Polymers 0.000 claims description 39
- 229940082509 xanthan gum Drugs 0.000 claims description 39
- 235000010493 xanthan gum Nutrition 0.000 claims description 39
- 239000000230 xanthan gum Substances 0.000 claims description 39
- 239000006096 absorbing agent Substances 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 20
- 230000002745 absorbent Effects 0.000 claims description 19
- 239000002250 absorbent Substances 0.000 claims description 19
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical group CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 9
- 238000009210 therapy by ultrasound Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 claims description 5
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 4
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 4
- 239000013078 crystal Substances 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 7
- 239000011521 glass Substances 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000012790 adhesive layer Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000012213 gelatinous substance Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- GJCOSYZMQJWQCA-UHFFFAOYSA-N 9H-xanthene Chemical class C1=CC=C2CC3=CC=CC=C3OC2=C1 GJCOSYZMQJWQCA-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003674 animal food additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- 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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
-
- 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
- C09J11/08—Macromolecular additives
-
- 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
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/10—Homopolymers or copolymers of methacrylic acid esters
- C09J133/12—Homopolymers or copolymers of methyl methacrylate
-
- 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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/241—Polyolefin, e.g.rubber
- C09J7/243—Ethylene or propylene polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- 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
- C09J2423/00—Presence of polyolefin
- C09J2423/04—Presence of homo or copolymers of ethene
- C09J2423/046—Presence of homo or copolymers of ethene in the substrate
-
- 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
- C09J2433/00—Presence of (meth)acrylic polymer
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention relates to the field of mobile phone film preparation, and particularly discloses coating glue and a preparation method and application thereof. The coating glue comprises glue, ethyl ester, a curing agent and an additive, and the preparation method comprises the following steps: adding glue into ethyl ester, stirring to obtain transparent crystal, adding curing agent, stirring to dissolve completely, adding additive into the above mixture, and stirring to dissolve completely to obtain coating glue. After the coating glue is coated on a PE substrate, the rainbow texture phenomenon of the obtained PE film can be obviously improved.
Description
Technical Field
The application relates to the field of mobile phone film preparation, in particular to coating glue.
Background
At present, a PE film is usually used for a mobile phone film to protect a mobile phone screen and prevent the mobile phone screen from being damaged due to collision when the mobile phone screen leaves a factory.
The PE film comprises a PE base material and coating glue, wherein the PE base material is obtained by blow molding or co-extrusion of a PE raw material. The coating glue is generally PMMA glue. When the PE film is prepared, glue is coated on the surface of the PE substrate, and the PE film is obtained after the glue is cured.
In view of the above-mentioned related technologies, the inventor believes that there is a defect that the PE film has serious rainbow patterns, which may cause the screen to be unattractive and may affect the eyesight of a person.
Disclosure of Invention
In view of the defects of the prior art, the first object of the present invention is to provide a coating glue, which is combined with a PE substrate to obtain a PE film with less rainbow patterns.
The second purpose of the invention is to provide a preparation method of the coating glue, which is used for preparing the coating glue.
A third object of the present invention is to provide a PE film having an advantage of less rainbow patterns.
In order to achieve the first object, the invention provides the following technical scheme: a coating glue is characterized in that: the composition is prepared from the following raw materials in parts by weight:
1-2 parts of glue;
3-8 parts of ethyl ester;
1-5 parts of a curing agent;
3-8 parts of an additive.
By adopting the technical scheme, the addition of the glue can ensure the sticking viscosity of the glue, and the ethyl ester can be used as a solvent to dissolve various substances and can accelerate the solidification due to the high volatilization speed. The addition of the curing agent can improve the cohesive force of the glue, so that the prepared film has no residual glue and does not fall off, and the waterproofness is improved. The additive is added, so that the lubricating property of the coating glue can be effectively improved, and the resistance of the film in stretching can be effectively reduced. When the glue and the ethyl ester are prepared by the weight parts, the rainbow patterns of the prepared coating glue are reduced.
Further, the weight ratio range of the glue to the ethyl ester is 1: (4.8-5.2).
By adopting the technical scheme, when the weight ratio of the glue to the ethyl ester is 1: (4.8-5.2), the rainbow patterns of the prepared coating glue are obviously improved, and the instant film tearing voltage of the film is reduced.
Further, the weight ratio of the glue to the ethyl ester is 1: 5.
by adopting the technical scheme, when the weight ratio of the glue to the ethyl ester is 1: and 5, the prepared coating glue does not have rainbow patterns, and the instant film tearing voltage of the film is lower.
Further, the feed additive is prepared from the following raw materials in parts by weight:
1 part of glue;
5 parts of ethyl ester;
3 parts of a curing agent;
5 parts of additive.
By adopting the technical scheme, when the coating glue is prepared by adopting the technical scheme, the rainbow lines of the prepared coating glue are greatly improved, the transparency of the film prepared by using the glue is high, and in addition, the instantaneous film tearing voltage of the obtained film is reduced.
Further, the glue is polymethyl methacrylate.
Through adopting above-mentioned technical scheme, use polymethyl methacrylate as glue, can be fine mix with other materials in the coating glue, in addition, it can mix together with the curing agent well in order to solidify, is convenient for bond with the PE substrate.
Further, the ethyl ester is ethyl acetate.
By adopting the technical scheme, the ethyl acetate has high volatilization speed and is better mixed with various substances, so that when the ethyl acetate is used as a solvent, more uniform coating glue can be obtained, and the coating glue is quicker when being solidified.
Further, the curing agent is CAT105 curing agent produced by Suzhou Jiaant nanometer technology limited.
Further, the additive is CAT107 additive produced by Suzhou Jiaant nanometer technology limited.
Further, the blue light absorbing agent also comprises 0.2 to 0.6 weight portion of modified blue light absorbing agent;
the modified blue-light absorber is prepared by the following method:
the method comprises the following steps: pretreating xanthan gum, standing the xanthan gum in water for 4-6h to form a gel substance, adding sodium dodecyl sulfate with the weight of 10-15% of the xanthan gum into the gel substance, stirring for 1-2h, and then performing ultrasonic treatment for 20-30 min;
step two: mixing 50-60 wt% of blue light absorbent of xanthan gum, 10-30 wt% of urethane acrylate of xanthan gum and the xanthan gum prepared in the first step, keeping the temperature at 20-35 ℃, stirring for 10-15min, then heating to 80-90 ℃, continuously stirring, stopping heating when the weight of the mixture is 85-90% of that before heating, and cooling to room temperature to obtain the modified blue light absorbent.
By adopting the technical scheme, when the modified blue light absorbent is prepared, the xanthan gum is pretreated firstly, so that the xanthan gum absorbs enough water and then the sodium dodecyl sulfate is added for modification. So that it can be well dispersed in the glue. And then adding the modified xanthan gum into a blue light absorbent and polyurethane acrylate, stirring for 10-15min, uniformly mixing, heating to evaporate more water in the gel, stopping heating when the weight is 85-90% of that before heating, and cooling to room temperature to obtain the modified blue light absorbent.
Further, the modified blue-light absorber is prepared by the following method:
the method comprises the following steps: pretreating xanthan gum, standing the xanthan gum in water for 5h to form a gel substance, adding sodium dodecyl sulfate with the weight being 12% of that of the xanthan gum into the gel substance, stirring for 1.5h, and then carrying out ultrasonic treatment for 25 min;
step two: and (2) mixing 55% by weight of blue light absorber of xanthan gum, 15% by weight of urethane acrylate of xanthan gum and the xanthan gum prepared in the first step, keeping the temperature at 30 ℃, stirring for 12min, heating to 85 ℃, continuously stirring, stopping heating when the weight of the mixture is 88% of that before heating, and cooling to room temperature to obtain the modified blue light absorber.
By adopting the technical scheme, the modified blue light absorbent prepared by the scheme has a good blue light absorption effect, and in addition, the modified blue light absorbent has good dispersibility, can be well dispersed in coating glue, and the rainbow patterns of the coating glue obtained by using the modified blue light absorbent are less.
In order to achieve the second object, the invention provides the following technical scheme:
a preparation method of coating glue comprises the following steps:
step 1: adding glue into ethyl ester, and stirring for 10-20 min until the solution is transparent and crystalline;
step 2: adding a curing agent into the mixture, and stirring for 10-20 minutes until the curing agent is completely dissolved;
and step 3: and adding the additive into the mixture, and stirring for 10-20 minutes until the additive is completely dissolved to obtain the coating glue.
By adopting the technical scheme, in the process of preparing the coating glue, the glue is dissolved in the ethyl ester, then the curing agent is added to cure the glue, and then the additive is added, so that the lubricating property of the coating glue is improved, and the resistance of the film in stretching is reduced. The preparation process is simple and the steps are simple.
Further, the concrete step of the first step is that the glue and the modified blue light absorbent are added into the ethyl ester, and the mixture is stirred for 10 to 20 minutes until the solution is transparent and crystalline;
by adopting the technical scheme, when the modified blue light absorbent is required to be added, the modified blue light absorbent can be added in the first step, so that the modified blue light absorbent can be well dispersed in the glue, and the prepared coating glue is more uniform.
In order to achieve the third object, the invention provides the following technical solutions:
the PE film comprises a PE substrate and an adhesive layer, wherein the adhesive layer is prepared from the coating glue.
By adopting the technical scheme, when the PE film is prepared, the coating glue is coated on the PE substrate to form the glue layer. The obtained PE film has better light transmittance, and besides, the PE film has less rainbow patterns.
Further, the thickness of the glue layer is 3 μm, and the glue coating amount is 14g/m2。
Further, the thickness of the PE substrate was 0.05 mm.
By adopting the technical scheme, the thickness of the PE base material is 0.05mm, the thickness of the film is smaller, the PE base material is clearly pasted on a pasted object, in addition, the thickness of the glue layer is 3 mu m, and the glue coating amount is 14g/m2. If the amount of the adhesive layer is too large, the tension of the PE film is too small, and if the amount of the adhesive layer is too small, the adhesive strength of the PE film is insufficient.
In conclusion, the invention has the following beneficial effects:
firstly, because the invention adopts 1-2 parts of glue and 3-8 parts of ethyl ester, the prepared glue can effectively improve the rainbow pattern effect of the PE film after being coated on the PE film, and besides, the instant film tearing voltage is reduced.
Secondly, the modified blue light absorbent is preferably added in the invention, which can ensure that the blue light resistance effect of the PE film is improved under the condition that the physical properties of the prepared PE film are not greatly different.
Thirdly, the method of the invention mixes all the materials evenly by stirring in batches, and the obtained glue is more even and has better property.
Fourthly, the rainbow texture phenomenon of the PE film prepared by the invention is effectively improved.
Detailed Description
The present invention will be described in further detail with reference to examples.
The raw materials in the following preparation examples and examples are commercially available and can be purchased from the sources shown in table 1.
TABLE 1
Preparation example 1
A modified blue-light absorber is prepared by the following steps:
the method comprises the following steps: pretreating 1kg of xanthan gum, placing the xanthan gum in 2kg of water, standing for 4h to form a gelatinous substance, adding sodium dodecyl sulfate with the weight being 10% of that of the xanthan gum, stirring for 2h, then carrying out ultrasonic treatment, and carrying out ultrasonic treatment for 30 min;
step two: and (2) mixing 60% by weight of blue light absorber of xanthan gum, 10% by weight of urethane acrylate of xanthan gum and the xanthan gum prepared in the first step, keeping the temperature at 20 ℃, stirring for 15min, heating to 80 ℃, continuously stirring, stopping heating when the weight of the mixture is 85% of that before heating, and cooling to room temperature to obtain the modified blue light absorber.
Preparation example 2
A modified blue-light absorber is prepared by the following steps:
the method comprises the following steps: pretreating 1kg of xanthan gum, placing the xanthan gum in 2kg of water, standing for 6h to form a gelatinous substance, adding sodium dodecyl sulfate accounting for 15% of the weight of the xanthan gum, stirring for 1h, then performing ultrasonic treatment, and performing ultrasonic treatment for 20 min;
step two: and (2) mixing the blue light absorber accounting for 50% of xanthan gum, the polyurethane acrylate accounting for 30% of xanthan gum and the xanthan gum prepared in the first step, keeping the temperature at 35 ℃, stirring for 10min, heating to 90 ℃, continuously stirring, stopping heating when the weight of the blue light absorber is 90% of that before heating, and cooling to room temperature to obtain the modified blue light absorber.
Preparation example 3
A modified blue-light absorber is prepared by the following steps:
the method comprises the following steps: pretreating xanthan gum, standing the xanthan gum in water for 5h to form a gel substance, adding sodium dodecyl sulfate with the weight being 12% of that of the xanthan gum into the gel substance, stirring for 1.5h, and then carrying out ultrasonic treatment for 25 min;
step two: and (2) mixing 55% by weight of blue light absorber of xanthan gum, 15% by weight of urethane acrylate of xanthan gum and the xanthan gum prepared in the first step, keeping the temperature at 30 ℃, stirring for 12min, heating to 85 ℃, continuously stirring, stopping heating when the weight of the mixture is 88% of that before heating, and cooling to room temperature to obtain the modified blue light absorber.
Example 1
A coating glue is prepared by the following method:
step 1: adding glue with the weight shown in the table 2 into the ethyl ester, and stirring for 15 minutes until the solution is transparent and crystalline;
step 2: adding a curing agent with the weight shown in the table 2 into the mixture, and stirring for 15 minutes until the curing agent is completely dissolved;
and step 3: the additives in the weight amounts shown in table 2 were added to the above mixture, and stirred for 15 minutes until completely dissolved, to obtain a coating glue.
Examples 2 to 5
The difference from example 1 is that each raw material was prepared by the weight shown in table 2.
Example 6
A coating glue is prepared by the following method:
step 1: adding glue and a modified blue-light absorber with the weight shown in the table 2 into the ethyl ester, and stirring for 15 minutes until the solution is transparent and crystalline;
step 2: adding a curing agent with the weight shown in the table 2 into the mixture, and stirring for 15 minutes until the curing agent is completely dissolved;
and step 3: the additives in the weight amounts shown in table 2 were added to the above mixture, and stirred for 15 minutes until completely dissolved, to obtain a coating glue.
Examples 7 to 8
The difference from example 6 is that each raw material was prepared by the weight shown in Table 2.
Example 9
A coating glue is prepared by the following method:
step 1: adding glue and a modified blue-light absorber with the weight shown in the table 2 into the ethyl ester, and stirring for 10 minutes until the solution is transparent and crystalline;
step 2: adding a curing agent with the weight shown in the table 2 into the mixture, and stirring for 20 minutes until the curing agent is completely dissolved;
and step 3: the additives in the weight amounts shown in table 2 were added to the above mixture, and stirred for 10 minutes until completely dissolved, to obtain a coating glue.
Example 10
A coating glue is prepared by the following method:
step 1: adding glue and a modified blue-light absorber with the weight shown in the table 2 into the ethyl ester, and stirring for 20 minutes until the solution is transparent and crystalline;
step 2: adding the curing agent with the weight shown in the table 2 into the mixture, and stirring for 10 minutes until the curing agent is completely dissolved;
and step 3: the additives in the weight amounts shown in table 2 were added to the above mixture, and stirred for 20 minutes until completely dissolved, to obtain a coating glue.
Example 11
The difference from example 6 is that the modified blue-light absorber was replaced by a commercially available blue-light absorber.
Comparative examples 1 to 2
The difference from example 1 is that each raw material was prepared by the weight shown in table 2.
Application example 1
A PE film is prepared by the following method:
the surface of a PE film 0.05mm thick was coated with a layer of the coating glue prepared in example 1, the thickness of the glue layer was 3 μm, and the glue application amount was 14g/m2. And keeping the temperature at 60 ℃ by using a wind box, and solidifying and curing the coating glue to form a glue layer to obtain the PE film.
Application examples 2 to 11
A PE film was different from application example 1 in that the coating glues prepared in examples 2 to 10 were coated on the PE film, respectively.
Comparative application examples 1 to 2
A PE film was different from application example 1 in that the coating glues prepared in comparative examples 1-2 were respectively coated on the PE film.
TABLE 2
Performance test
1. And (3) rainbow texture testing: the PE films prepared in application examples 1 to 11 and comparative application examples 1 to 2 were placed under a fluorescent lamp and observed with the naked eye, and if no rainbow texture was found, the PE film was marked as transparent, if the rainbow texture area was found to occupy less than 10% of the film area, the PE film was marked as slight rainbow texture, if the rainbow texture area was found to occupy 10 to 25% of the film area, the PE film was marked as more rainbow texture, and if the rainbow texture area was found to occupy more than 25% of the film area, the PE film was marked as severe rainbow texture. The test results are shown in table 3.
2. And (3) testing tearing force and tearing force voltage:
the films obtained in application examples 1 to 11 and comparative application examples 1 to 2 were attached to a test glass plate, and after 20 minutes, the tearing force and the tearing voltage were tested.
2.1 fix the pad pasting glass sample on the test jig, the membrane end that comes out more is fixed at the test jig movable end, starts testing arrangement, and the even velocity rebound of removal end at 300mm/min speed tears the film that attaches on glass, measures and tears the power. The test results are shown in table 3.
2.2 fix another glass that pastes the template membrane on the desktop, open and tear the voltage tester, the infrared ray aims at the glass upper surface, tears the template membrane that pastes at the glass surface at the uniform velocity with the hand, and the average value of tear film voltage is torn promptly in the test moment, tears the power voltage promptly. The test results are shown in table 3.
3. Blue light test experiment
Examples 1-11 and comparative examples 1-2 were tested for the shielding efficiency against short-wave blue light using a "Lin scientific LS108 blue-light tester". The test results are shown in table 3.
TABLE 3
As can be seen from Table 3, when the coating glues of application examples 1-5 and comparative application examples 1-2 were used at a glue content of 1-2 parts and an ethyl ester content of 3-8 parts, the obtained coating glues showed less and less pronounced rainbow lines of PE film after being coated on a PE substrate. And when the weight ratio range of the glue and the ethyl ester is 1: (4.8-5.2), the obtained PE film has a good improvement in the rainbow patterns.
As can be seen from table 3, when the weight ratio of glue to ethyl ester was found to be 1: and 5, the rainbow patterns of the prepared glue are minimum, and the glue can be known according to application examples 6-8, wherein when the weight ratio of the glue to the ethyl ester is 1: and 5, after other additives are added, the appearance of rainbow patterns is less.
As can be seen from table 3, in the application examples 1 to 11, the tearing force ranges from 14.81 to 14.86gf, the tearing force is better, and in addition, when the instantaneous tearing voltage is tested, the instantaneous tearing voltage of the application examples 1 to 11 is found to be 1.93 to 2.16Kv, the average value is lower than the upper limit value of the industry, and when the weight ratio of the glue to the ethyl ester is 1: and when the voltage is 5, the tearing force is less than 2Kv, and the performance is better. In addition, in the test process, the fluctuation value of the instantaneous tearing voltage of the application example 3 is shown to be between 1.83 KV and 2.05KV, the average value is less than 2KV, and the property is better.
As can be seen from table 3, in the application examples 6 to 8 and the application example 11, compared with the commercially available blue light absorbent, when the modified blue light absorbent is used, the short-wave blue light can be absorbed to a greater extent, and the requirement for absorbing blue light is met. In addition, the modified blue light absorber is added, so that the tearing force of the PE film can be increased to a certain extent, and the tearing force voltage of the PE film can be reduced. And application examples 6-8 are compared, when the modified blue light absorber prepared by the method of preparation example 3 is adopted, the blue light absorbing effect is good, and the influence on other properties of the film is small.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (5)
1. A coating glue is characterized in that: the composition is prepared from the following raw materials in parts by weight:
1-2 parts of glue;
3-8 parts of ethyl ester;
1-5 parts of a curing agent;
3-8 parts of an additive;
0.2-0.6 part of modified blue light absorbent;
the weight ratio range of the glue to the ethyl ester is 1: (4.8-5.2);
the glue is polymethyl methacrylate;
the ethyl ester is ethyl acetate;
the modified blue-light absorber is prepared by the following method:
the method comprises the following steps: pretreating xanthan gum, standing the xanthan gum in water for 4-6h to form a gel substance, adding sodium dodecyl sulfate with the weight of 10-15% of the xanthan gum into the gel substance, stirring for 1-2h, and then performing ultrasonic treatment for 20-30 min;
step two: mixing 50-60 wt% of blue light absorbent of xanthan gum, 10-30 wt% of urethane acrylate of xanthan gum and the xanthan gum prepared in the first step, keeping the temperature at 20-35 ℃, stirring for 10-15min, then heating to 80-90 ℃, continuously stirring, stopping heating when the weight of the mixture is 85-90% of that before heating, and cooling to room temperature to obtain the modified blue light absorbent.
2. The coating glue of claim 1, wherein: the composition is prepared from the following raw materials in parts by weight:
1 part of glue;
5 parts of ethyl ester;
3 parts of a curing agent;
5 parts of additive.
3. A method for preparing a coating glue, which is used for preparing the coating glue of claim 1, and comprises the following steps:
step 1: adding glue and a modified blue light absorbent into the ethyl ester, and stirring for 10-20 minutes until the solution is transparent and crystalline;
step 2: adding a curing agent into the mixture, and stirring for 10-20 minutes until the curing agent is completely dissolved;
and step 3: and adding the additive into the mixture, and stirring for 10-20 minutes until the additive is completely dissolved to obtain the coating glue.
4. A PE film characterized by: comprising a PE substrate and a glue layer, said glue layer being made of a coating glue according to claim 1 or 2.
5. The method for preparing a PE film according to claim 4, wherein: the thickness of the glue layer is 3 μm, and the glue coating amount is 14g/m2。
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Effective date of registration: 20230726 Address after: Workshop A7, Phase I, Pingqian International (Zhaoqing New Area) Modern Industrial Park, No. 7, Kechuang Avenue, Yong'an Town, Dinghu District, Zhaoqing, Guangdong Province, 526000 Patentee after: Guangdong Qinle New Material Technology Co.,Ltd. Address before: Building 1, No.85 Yongjun Road, Daling village, Dalingshan Town, Dongguan City, Guangdong Province 523000 Patentee before: Dongguan QINLE Electronic Co.,Ltd. |
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Denomination of invention: A coating adhesive and its preparation method and application Granted publication date: 20220419 Pledgee: Bank of China Limited Zhaoqing branch Pledgor: Guangdong Qinle New Material Technology Co.,Ltd. Registration number: Y2024980012066 |