CN111995954A - Manufacturing method of high-level-difference laminating adhesive - Google Patents
Manufacturing method of high-level-difference laminating adhesive Download PDFInfo
- Publication number
- CN111995954A CN111995954A CN202011031332.8A CN202011031332A CN111995954A CN 111995954 A CN111995954 A CN 111995954A CN 202011031332 A CN202011031332 A CN 202011031332A CN 111995954 A CN111995954 A CN 111995954A
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- Prior art keywords
- solvent
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- release film
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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
- C09J7/10—Adhesives in the form of films or foils without carriers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
- C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
-
- 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
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/385—Acrylic polymers
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Adhesive Tapes (AREA)
Abstract
The invention provides a method for preparing a high-level-difference laminating adhesive, which comprises the following steps: firstly, coating acrylic pressure-sensitive adhesive with the thickness of 100-175 mu m on a layer of PET release film; secondly, putting the coated PET release film into a 120 ℃ oven to be dried for 10 minutes; thirdly, removing redundant solvent; fourthly, another layer of PET release film is covered on the acrylic pressure-sensitive adhesive. The anti-sticking adhesive tape can effectively improve the sticking performance of the high-level-difference sticking adhesive, so that the product has stronger stripping force and adhesive retention time.
Description
Technical Field
The invention relates to the field of processing and manufacturing of pressure-sensitive adhesives, in particular to a manufacturing method of a high-section-difference laminating adhesive.
Background
The high-level difference glue can improve the fitting degree between the camera and the screen, so that the light transmittance of the camera lens is improved, and the photographing quality is guaranteed. Meanwhile, the high-level-difference optical cement can be applied to different fields according to different thicknesses, and is mainly used for: electronic paper, transparent device bonding, projection screen assembly, aerospace or military optical device assembly, display assembly, lens assembly, resistive touch screen G + F + F, F + F, capacitive touch screen, panel, ICON, glass, polycarbonate and other plastic material bonding.
The glue in the prior art has the characteristics of colorless transparency, light transmittance of more than 90 percent, good bonding strength and capability of being cured at room temperature or intermediate temperature. However, the existing product is easy to have the problems of attaching bubbles, rebounding bubbles, high yellowing of colloid and the like.
Disclosure of Invention
In view of the above-mentioned problems in the background art, the present invention provides a method for manufacturing a high-level-difference adhesive, which is implemented as follows: firstly, coating acrylic pressure-sensitive adhesive with the thickness of 100-175 mu m on a layer of PET release film; and secondly, drying the coated PET release film in a 120 ℃ oven for three 10 minutes, removing the redundant solvent IV, and covering another layer of PET release film on the acrylic pressure-sensitive adhesive.
Further, the acrylic pressure-sensitive adhesive is prepared according to the following steps: firstly, mixing 15-30 parts of hard monomer, 30-60 parts of soft monomer, 5-15 parts of functional monomer and 0.2-0.8 part of initiator to obtain a preform S1; secondly, uniformly mixing the prefabricated body S1 and a solvent with 45-65% of the prefabricated body S1 by mass, and pouring the mixture into a four-neck flask with a thermometer, a mechanical stirrer and a condenser pipe to obtain a reaction system S2; thirdly, heating the four-neck flask to raise the temperature of the reaction system S2 to 80 ℃ for polymerization reaction, and continuing to perform heat preservation reaction for 1.5-2 hours after the viscosity of the reaction system S2 is increased to obtain a primary polymer S3; uniformly mixing 0.01-0.2 part of initiator and 10-30 parts of solvent, uniformly dripping the mixture into the primary polymer S3 by using a constant liquid funnel within 1 hour, and carrying out heat preservation reaction for 2 hours to obtain a product S4; fifthly, adding the initiator solvent mixture remained in the fourth step into S4 at one time, and then carrying out heat preservation reaction for 1.5h to obtain S5; sixthly, adding 1-20 parts of solvent into S5, accelerating the rotation speed of mechanical stirring, and stirring for 20 min; seventhly, cooling and discharging to obtain S6, wherein the solid content of the acrylate pressure-sensitive adhesive is 25-40%
Eighthly, adding a photoinitiator and a UV multifunctional crosslinking monomer into S6;
further, the initiator comprises at least one of: azobisisobutyronitrile or azobisisoheptonitrile.
Further, the solvent includes at least one of: ethyl acetate, toluene, acetone.
Further, the photoinitiator comprises at least one of: 2-hydroxy-2-methyl-1-phenylpropanone, 1-hydroxycyclohexylphenylketone, TPO-2,4, 6-trimethylbenzoyl-diphenylphosphine oxide, TPO-L2, 4, 6-trimethylbenzoyl phenylphosphonic acid ethyl ester
Further, the UV multifunctional crosslinking monomer includes at least one of: TPGDA tripropylene glycol diacrylate, HDDA hexanediol diacrylate, PETA pentaerythritol triacrylate, TMPTA trimethylolpropane triacrylate.
Compared with the prior art, the glue has good filling performance, and can reduce the attaching bubbles in the terminal equipment after passing through the back UV, reduce the rebounding condition of the attaching bubbles and improve the attaching degree between the camera and the screen.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, specific embodiments thereof will be described in detail below, and it is apparent that the described embodiments are a part, but not all, of the embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present invention, shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Mixing 1-10 parts of acrylamide, 0.1-2 parts of acrylic acid, 1-10 parts of butyl acrylate, 10-60 parts of isooctyl acrylate, 5-20 parts of isooctyl methacrylate, 0.01-0.5 part of hydroxyethyl acrylate and 0.2-0.8 part of azodiisobutyronitrile, uniformly mixing 45-65% of ethyl acetate in total weight, pouring into a four-neck flask with a thermometer, a mechanical stirrer and a condenser pipe, heating to 80 ℃ for reaction, and reacting for 2H when the viscosity of a reaction system begins to increase. Uniformly mixing 0.01-0.2 part of azodiisobutyronitrile and 10-30 parts of ethyl acetate, uniformly dripping into a reaction system by using a constant liquid funnel within 1 hour, and carrying out heat preservation reaction for 2 hours; adding the rest initiator into the reaction system at one time, and then carrying out heat preservation reaction for 1.5 h; adding 1-20 parts of azobisisobutyronitrile into a reaction system, adjusting the rotation speed of 150rap/min to 300rap/min, and stirring for 20 min; adding photoinitiator (2-hydroxy-2-methyl-1-phenyl acetone, 1-hydroxycyclohexyl phenyl ketone, TPO-2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide, TPO-L2, 4, 6-trimethylbenzoyl phenyl ethyl phosphonate) and UV polyfunctional group crosslinking monomer (TPGDA tripropylene glycol diacrylate, HDDA hexanediol diacrylate, PETA pentaerythritol triacrylate, TMPTA trimethylolpropane triacrylate), and finally cooling and discharging. When in use, active free radicals or ionic groups are generated by utilizing high-intensity ultraviolet light in an Ultraviolet (UV) light curing device, so that polymerization, crosslinking and grafting reactions are initiated.
The above products were tested for peel strength with respect to the product before modification, the peel strength was tested according to GB/T2792-1998, the tack was tested according to GB/T4851-1998, and the following comparative data were obtained:
from the comparative data, the high-profile adhesive tape that can be made according to the method of the present invention has a stronger peel force and tack retention time than the high-profile adhesive tape before modification.
Claims (6)
1. The manufacturing method of the high-level-difference laminating adhesive is characterized by comprising the following steps of:
firstly, coating acrylic pressure-sensitive adhesive with the thickness of 100-175 mu m on a layer of PET release film;
secondly, putting the coated PET release film into a 120 ℃ oven to be dried for 10 minutes
Thirdly, removing the redundant solvent
Fourthly, another layer of PET release film is covered on the acrylic pressure-sensitive adhesive.
2. The method for preparing the adhesive according to claim 1, wherein the acrylic pressure sensitive adhesive is prepared by the following steps:
firstly, mixing 15-30 parts of hard monomer, 30-60 parts of soft monomer, 5-15 parts of functional monomer and 0.2-0.8 part of initiator to obtain a preform S1;
secondly, uniformly mixing the prefabricated body S1 and a solvent with 45-65% of the prefabricated body S1 by mass, and pouring the mixture into a four-neck flask with a thermometer, a mechanical stirrer and a condenser pipe to obtain a reaction system S2;
thirdly, heating the four-neck flask to raise the temperature of the reaction system S2 to 80 ℃ for polymerization reaction, and continuing to perform heat preservation reaction for 1.5-2 hours after the viscosity of the reaction system S2 is increased to obtain a primary polymer S3;
uniformly mixing 0.01-0.2 part of initiator and 10-30 parts of solvent, uniformly dripping the mixture into the primary polymer S3 by using a constant liquid funnel within 1 hour, and carrying out heat preservation reaction for 2 hours to obtain a product S4;
fifthly, adding the initiator solvent mixture remained in the fourth step into S4 at one time, and then carrying out heat preservation reaction for 1.5h to obtain S5;
sixthly, adding 1-20 parts of solvent into S5, accelerating the rotation speed of mechanical stirring, and stirring for 20 min;
seventhly, cooling and discharging to obtain S6, wherein the solid content of the acrylate pressure-sensitive adhesive is 25-40%
Eighthly, adding a photoinitiator and a UV multifunctional crosslinking monomer into S6.
3. The method for manufacturing a high-level-difference laminating adhesive according to claim 2, wherein the initiator comprises at least one of the following components: azobisisobutyronitrile or azobisisoheptonitrile.
4. The method for manufacturing a height difference laminating adhesive according to claim 2, wherein the solvent comprises at least one of the following components: ethyl acetate, toluene, acetone.
5. The method for manufacturing a high-level-difference laminating adhesive according to claim 2, wherein the photoinitiator comprises at least one of the following components: 2-hydroxy-2-methyl-1-phenylacetone, 1-hydroxycyclohexylphenylketone, TPO-2,4, 6-trimethylbenzoyl-diphenylphosphine oxide, TPO-L2, 4, 6-trimethylbenzoyl phenylphosphonic acid ethyl ester.
6. The method for manufacturing a step height joint compound according to claim 2, wherein the UV multifunctional crosslinking monomer comprises at least one of: TPGDA tripropylene glycol diacrylate, HDDA hexanediol diacrylate, PETA pentaerythritol triacrylate, TMPTA trimethylolpropane triacrylate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020102539356 | 2020-04-02 | ||
| CN202010253935.6A CN111269661A (en) | 2020-04-02 | 2020-04-02 | Manufacturing method of high-level-difference laminating adhesive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111995954A true CN111995954A (en) | 2020-11-27 |
Family
ID=70998211
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010253935.6A Withdrawn CN111269661A (en) | 2020-04-02 | 2020-04-02 | Manufacturing method of high-level-difference laminating adhesive |
| CN202011031332.8A Pending CN111995954A (en) | 2020-04-02 | 2020-09-27 | Manufacturing method of high-level-difference laminating adhesive |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010253935.6A Withdrawn CN111269661A (en) | 2020-04-02 | 2020-04-02 | Manufacturing method of high-level-difference laminating adhesive |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN111269661A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111763487A (en) * | 2020-06-30 | 2020-10-13 | 南京汇鑫光电材料有限公司 | Preparation method of adhesive for attaching curved-surface screen |
| CN112063313A (en) * | 2020-07-06 | 2020-12-11 | 南京汇鑫光电材料有限公司 | Multilayer composite pressure-sensitive adhesive capable of being completely attached |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110452620A (en) * | 2019-07-25 | 2019-11-15 | 广州慧谷工程材料有限公司 | Optical adhesive tape and preparation method thereof, optical cement |
-
2020
- 2020-04-02 CN CN202010253935.6A patent/CN111269661A/en not_active Withdrawn
- 2020-09-27 CN CN202011031332.8A patent/CN111995954A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110452620A (en) * | 2019-07-25 | 2019-11-15 | 广州慧谷工程材料有限公司 | Optical adhesive tape and preparation method thereof, optical cement |
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| Publication number | Publication date |
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| CN111269661A (en) | 2020-06-12 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201127 |