CN115772283B - Special anti-static ionization film for OCA optical cement coating and preparation method thereof - Google Patents
Special anti-static ionization film for OCA optical cement coating and preparation method thereof Download PDFInfo
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- CN115772283B CN115772283B CN202211675967.0A CN202211675967A CN115772283B CN 115772283 B CN115772283 B CN 115772283B CN 202211675967 A CN202211675967 A CN 202211675967A CN 115772283 B CN115772283 B CN 115772283B
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- 239000011248 coating agent Substances 0.000 title claims abstract description 80
- 238000000576 coating method Methods 0.000 title claims abstract description 80
- 230000003287 optical effect Effects 0.000 title claims abstract description 25
- 239000004568 cement Substances 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 239000000758 substrate Substances 0.000 claims abstract description 29
- 239000003795 chemical substances by application Substances 0.000 claims description 71
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 36
- 239000003054 catalyst Substances 0.000 claims description 28
- 238000001723 curing Methods 0.000 claims description 22
- 238000001035 drying Methods 0.000 claims description 18
- 239000002904 solvent Substances 0.000 claims description 16
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 14
- 239000002216 antistatic agent Substances 0.000 claims description 12
- 239000012188 paraffin wax Substances 0.000 claims description 12
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 6
- 239000013638 trimer Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 5
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 3
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 22
- 230000000052 comparative effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 229910052797 bismuth Inorganic materials 0.000 description 3
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
The invention provides an anti-static ionization film special for OCA optical cement coating, which comprises the following components: a substrate layer having a thickness of 50-100um; the two sides of the substrate layer also comprise an antistatic coating, the antistatic coating is also coated with a release layer, and the coating weight of the release layer is 1-2g/m 2 . The invention also relates to a preparation method of the special antistatic release film for OCA optical cement coating. The antistatic ionization type film special for OCA optical cement coating has good antistatic effect and good residual adhesion rate.
Description
Technical Field
The invention relates to the field of release films, in particular to an anti-static ionization film special for OCA optical cement coating and a preparation method thereof.
Background
The OCA optical adhesive is a transparent adhesive with variable stripping force (substrate-free high-transparency acrylic double-sided adhesive), and an upper release film (light release force) and a lower release film (heavy release force) are respectively bonded on two sides of the OCA optical adhesive, and are commonly used for bonding transparent optical components such as a mobile phone touch panel, a lens and the like; it has very strong filling ability and optical uniformity, and is a soft rubber determined by performance due to no base material.
The OCA adhesive requires very high cleanliness and has very high light transmittance (more than 95%), so that the manufacturing process of the release film in China is different from the conventional production process of the release film. In addition, the OCA die cutting process also needs to use an ultralight release film for film replacement, and the ultralight release film needs to be matched with OCA glue to prevent glue pulling, so that the process has strict requirements on the appearance, release force, aging release force and other performances of the release film.
Therefore, the prior OCA release film needs to be improved, and the special antistatic release film for OCA optical cement coating with good antistatic effect and low residual adhesion rate is designed.
Disclosure of Invention
To overcome the shortcomings of the prior art, a first object of the present invention is to provide an anti-static ionization film special for OCA optical cement coating, comprising: a substrate layer, wherein the thickness of the substrate layer is 50-100um; the double sides of the substrate layer further comprise an antistatic coating, the antistatic coating is further coated with a release layer, and the coating weight of the release layer is 1-2g/m 2 。
In some embodiments, the release layer comprises:
in some embodiments, the ratio of the first release agent to the second release agent is 1:1 to 1:1.5.
In some embodiments, the first release agent is a silicone release agent.
In some embodiments, the second release agent is paraffin wax.
In some embodiments, the curing agent is at least one of toluene diisocyanate, hexamethylene diisocyanate trimer, toluene diisocyanate trimer.
In some embodiments, the catalyst is an organobismuth based catalyst.
In some embodiments, the solvent is at least one of ethyl acetate, toluene, acetone.
In some embodiments, the release layer further comprises: 0.2-2 parts of anti-sticking powder.
The second object of the invention is to provide a preparation method of the antistatic release film special for OCA optical cement coating, which comprises the following steps:
step one: coating antistatic agent on the two sides of the substrate and drying to form an antistatic coating;
step two: mixing the first release agent, the second release agent, the curing agent, the catalyst and the solvent according to a certain proportion, coating the mixture on the antistatic coating of the base material, drying and curing.
Compared with the prior art, the invention has the beneficial effects that: the invention provides an anti-static ionization film special for OCA optical cement coating, which comprises the following components: a substrate layer, wherein the thickness of the substrate layer is 50-100um; the double sides of the substrate layer further comprise an antistatic coating, the antistatic coating is further coated with a release layer, and the coating weight of the release layer is 1-2g/m 2 . The invention also relates to a preparation method of the special antistatic release film for OCA optical cement coating. The antistatic ionization type film special for OCA optical cement coating has good antistatic effect and good residual adhesion rate.
The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is hereinafter described in more detail with reference to the preferred embodiments of the present invention. Specific embodiments of the present invention are given in detail by the following examples.
Detailed Description
The present invention will be further described with reference to the following specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.
The OCA release film in the prior art has the following defects: 1. the ultra-light release coating amount is large, and anti-sticking powder is required to be added to prevent the back of the base material from being stuck during winding, so that the haze and the light transmittance are reduced; 2. the antistatic performance is poor, and static electricity is generated to be adsorbed during stripping; 3. the residual adhesion rate is low, and silicone oil is transferred to the OCA adhesive layer in a release mode, so that the usability of the OCA adhesive is affected. The invention relates to an anti-static ionization film special for OCA optical cement coating, which comprises the following components: a substrate layer, wherein the thickness of the substrate layer is 50-100um; the substrate layer also comprises an antistatic coating on both sides, and the antistatic coating is coated on the substrate layerIs also coated with a release layer, the coating weight of the release layer is 1-2g/m 2 The method comprises the steps of carrying out a first treatment on the surface of the The release film formed by the method has a good antistatic effect.
In some embodiments, the substrate layer is 50-100um thick, which may be a PET material.
In some embodiments, the release liquid is applied to the antistatic coating to form a release layer in an amount of 1-2g/m 2 。
In some embodiments, the release layer comprises:
the first release agent and the second release agent are selected, so that the finally formed release film has good residual adhesion rate and good quality.
In some embodiments, to improve the quality of the release film, the ratio of the first release agent to the second release agent is 1:1-1:1.5.
In some embodiments, the first release agent is a silicone release agent.
In some embodiments, the second release agent is paraffin wax.
It should be appreciated that in some embodiments, when the first release agent is a silicone release agent, the second release agent is a paraffin wax; the release film formed at the moment has better antistatic effect and residual adhesion rate.
In some embodiments, the curing agent is at least one of toluene diisocyanate, hexamethylene diisocyanate trimer, toluene diisocyanate trimer.
In some embodiments, the catalyst is an organobismuth based catalyst in order to increase the efficiency of the reaction.
In some embodiments, to ensure the dissolution effect, the solvent is at least one of ethyl acetate, toluene, and acetone.
In some embodiments, the release layer further comprises: 0.2-2 parts of anti-sticking powder. Compared with the prior art, the release layer coating amount is small, so that the used anti-sticking powder amount is far less than that of the prior art, and the haze and the light transmittance are ensured while the adhesion is avoided.
The invention also relates to a preparation method of the special antistatic release film for OCA optical cement coating, which comprises the following steps:
step one: coating antistatic agent on the two sides of the substrate and drying to form an antistatic coating;
step two: mixing the first release agent, the second release agent, the curing agent, the catalyst and the solvent according to a certain proportion, coating the mixture on the antistatic coating of the base material, drying and curing; the release film formed by the method has a good antistatic effect.
Example 1
Coating antistatic agent on the two sides of the substrate and drying to form an antistatic coating;
mixing 20 parts of a first release agent organosilicon release agent, 20 parts of a second release agent paraffin, 0.1 part of curing agent toluene diisocyanate, 0.5 part of catalyst organobismuth catalyst and 50 parts of solvent ethyl acetate, coating the mixture on an antistatic coating of a substrate, and drying and curing the mixture.
Example two
Coating antistatic agent on the two sides of the substrate and drying to form an antistatic coating;
50 parts of a first release agent organosilicon release agent, 75 parts of a second release agent paraffin, 4 parts of curing agent toluene diisocyanate, 3 parts of catalyst organobismuth catalyst and 120 parts of solvent ethyl acetate are mixed, coated on a base material antistatic coating, dried and cured.
Example III
Coating antistatic agent on the two sides of the substrate and drying to form an antistatic coating;
35 parts of a first parting agent organic silicon parting agent, 45 parts of a second parting agent paraffin, 2 parts of curing agent toluene diisocyanate, 1.5 parts of catalyst organic bismuth catalyst and 85 parts of solvent ethyl acetate are mixed, coated on a base material antistatic coating, dried and cured.
Comparative example one
Coating antistatic agent on the two sides of the substrate and drying to form an antistatic coating;
15 parts of a first release agent, 10 parts of a second release agent paraffin, 0.05 part of curing agent toluene diisocyanate, 0.2 part of catalyst organobismuth catalyst and 30 parts of solvent ethyl acetate are mixed, coated on a base material antistatic coating, dried and cured.
Comparative example two
Coating antistatic agent on the two sides of the substrate and drying to form an antistatic coating;
60 parts of a first release agent organosilicon release agent, 80 parts of a second release agent paraffin, 5 parts of curing agent toluene diisocyanate, 5 parts of catalyst organobismuth catalyst and 150 parts of solvent ethyl acetate are mixed, coated on a base material antistatic coating, dried and cured.
Comparative example three
Coating antistatic agent on the two sides of the substrate and drying to form an antistatic coating;
40 parts of a first release agent organosilicon release agent, 20 parts of a second release agent paraffin, 0.1 part of curing agent toluene diisocyanate, 0.5 part of catalyst organobismuth catalyst and 50 parts of solvent ethyl acetate are mixed, coated on a base material antistatic coating, dried and cured.
Comparative example four
Coating antistatic agent on the two sides of the substrate and drying to form an antistatic coating;
20 parts of a first release agent organosilicon release agent, 40 parts of a second release agent paraffin, 0.1 part of curing agent toluene diisocyanate, 0.5 part of catalyst organobismuth catalyst and 50 parts of solvent ethyl acetate are mixed, coated on a base material antistatic coating, dried and cured.
Comparative example five
Coating antistatic agent on the two sides of the substrate and drying to form an antistatic coating;
mixing 20 parts of a first parting agent fluorine parting agent, 20 parts of a second parting agent paraffin, 0.1 part of curing agent toluene diisocyanate, 0.5 part of catalyst organic bismuth catalyst and 50 parts of solvent ethyl acetate, coating the mixture on the antistatic coating of the base material, and drying and curing the mixture.
Comparative example six
Coating antistatic agent on the two sides of the substrate and drying to form an antistatic coating;
mixing 20 parts of a first release agent organic silicon release agent, 20 parts of a second release agent fluorine release agent, 0.1 part of curing agent toluene diisocyanate, 0.5 part of catalyst organic bismuth catalyst and 50 parts of solvent ethyl acetate, coating the mixture on a base material antistatic coating, and drying and curing the mixture.
The OCA optical adhesive coated special antistatic release films prepared in examples one to three, comparative examples one to six were respectively tested to obtain test results shown in table 1 below.
Table 1 test results table of different examples
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown, it is well suited to various fields of use, and further modifications may be readily made by those skilled in the art without departing from the general concepts defined by the claims and the equivalents thereof, and therefore the invention is not limited to the specific details and examples shown herein.
Claims (6)
1. An antistatic release film special for OCA optical cement coating, which is characterized by comprising the following components: a substrate layer, wherein the thickness of the substrate layer is 50-100um; the double sides of the substrate layer further comprise an antistatic coating, the antistatic coating is further coated with a release layer, and the coating weight of the release layer is 1-2g/m 2 ；
The release layer comprises:
20-50 parts of a first release agent;
20-75 parts of a second release agent;
0.1-4 parts of curing agent;
0.5-3 parts of catalyst;
50-120 parts of a solvent;
the ratio of the first release agent to the second release agent is 1:1-1:1.5;
the first release agent is an organosilicon release agent;
the second release agent is paraffin.
2. The special antistatic release film for OCA optical cement coating according to claim 1, wherein the curing agent is at least one of toluene diisocyanate, hexamethylene diisocyanate trimer and toluene diisocyanate trimer.
3. The special antistatic release film for OCA optical cement coating according to claim 1, wherein the catalyst is an organobismuth catalyst.
4. The special antistatic release film for OCA optical cement coating according to claim 1, wherein the solvent is at least one of ethyl acetate, toluene and acetone.
5. The special antistatic release film for OCA optical cement coating of claim 1, wherein the release layer further comprises: 0.2-2 parts of anti-sticking powder.
6. The preparation method of the special antistatic release film for OCA optical adhesive coating as claimed in claim 1, which is characterized by comprising the following steps:
step one: coating antistatic agent on the two sides of the substrate and drying to form an antistatic coating;
step two: mixing the first release agent, the second release agent, the curing agent, the catalyst and the solvent according to a certain proportion, coating the mixture on the antistatic coating of the base material, drying and curing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211675967.0A CN115772283B (en) | 2022-12-26 | 2022-12-26 | Special anti-static ionization film for OCA optical cement coating and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211675967.0A CN115772283B (en) | 2022-12-26 | 2022-12-26 | Special anti-static ionization film for OCA optical cement coating and preparation method thereof |
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| Publication Number | Publication Date |
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| CN115772283A CN115772283A (en) | 2023-03-10 |
| CN115772283B true CN115772283B (en) | 2024-01-30 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200400364Y1 (en) * | 2005-08-12 | 2005-11-03 | 나노캠텍주식회사 | Anti-static release film |
| CN105131833A (en) * | 2015-09-02 | 2015-12-09 | 上海应用技术学院 | Paraffin sliding feel organic silicon release agent |
| CN208098526U (en) * | 2017-11-07 | 2018-11-16 | 江阴通利光电科技有限公司 | A kind of release film for OCA fitting |
| CN109734943A (en) * | 2018-12-29 | 2019-05-10 | 南京君弘新材料有限公司 | A kind of transparent double face anti-static release film and preparation method thereof |
| CN112622382A (en) * | 2020-12-25 | 2021-04-09 | 保定乐凯新材料股份有限公司 | Multilayer film, manufacturing method and application thereof |
| CN115124749A (en) * | 2022-07-18 | 2022-09-30 | 浙江日久新材料科技有限公司 | Antistatic optical release film for OCA (optical clear adhesive) and preparation method thereof |
| CN115216045A (en) * | 2022-01-12 | 2022-10-21 | 江苏斯迪克新材料科技股份有限公司 | Low-temperature curing double-sided antistatic release film for polaroid and preparation method thereof |
-
2022
- 2022-12-26 CN CN202211675967.0A patent/CN115772283B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200400364Y1 (en) * | 2005-08-12 | 2005-11-03 | 나노캠텍주식회사 | Anti-static release film |
| CN105131833A (en) * | 2015-09-02 | 2015-12-09 | 上海应用技术学院 | Paraffin sliding feel organic silicon release agent |
| CN208098526U (en) * | 2017-11-07 | 2018-11-16 | 江阴通利光电科技有限公司 | A kind of release film for OCA fitting |
| CN109734943A (en) * | 2018-12-29 | 2019-05-10 | 南京君弘新材料有限公司 | A kind of transparent double face anti-static release film and preparation method thereof |
| CN112622382A (en) * | 2020-12-25 | 2021-04-09 | 保定乐凯新材料股份有限公司 | Multilayer film, manufacturing method and application thereof |
| CN115216045A (en) * | 2022-01-12 | 2022-10-21 | 江苏斯迪克新材料科技股份有限公司 | Low-temperature curing double-sided antistatic release film for polaroid and preparation method thereof |
| CN115124749A (en) * | 2022-07-18 | 2022-09-30 | 浙江日久新材料科技有限公司 | Antistatic optical release film for OCA (optical clear adhesive) and preparation method thereof |
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